CN105865975A - Slurry proportion detection device and method for slurry shield - Google Patents
Slurry proportion detection device and method for slurry shield Download PDFInfo
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- CN105865975A CN105865975A CN201610421833.4A CN201610421833A CN105865975A CN 105865975 A CN105865975 A CN 105865975A CN 201610421833 A CN201610421833 A CN 201610421833A CN 105865975 A CN105865975 A CN 105865975A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/26—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring pressure differences
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Abstract
The invention provides a slurry proportion detection device and method for a slurry shield. One side of a stock tank is provided with an upright detection pipe, the detection pipe is provided with three or more pressure sensors with different height differences, a plurality of pressure measurement points are formed in the upright detection pipe to measure hydraulic pressure of slurry at different height positions and calculate the slurry proportion, the technical problem that online proportion detection precision and reliability are poor due to the adverse environments that flowing velocity fluctuation of slurry in an existing slurry balanced shield is high, the medium uniform degree is unstable, and continuous stirring interference is high is solved, and the proportion detection device and method are high in adaption to the application environment, capable of bearing pipe vibration, high in environmental mechanical interference ability, high in reliability, high in maintainability, high in system precision and high in stability.
Description
Technical field
The present invention relates to slurry-water balance type shield technique field, relate in particular to pass in and out shield slurry ratio
The device of re-detection and detection method.
Background technology
Slurry-water balance type Shield Construction Method Used, has that efficiency of construction is high, dregs transportation is convenient, ground is built
Build the advantages such as thing settlement Control is good, extensively apply in the major diameter highway tunnel construction of city.Mud follows
Ring is the key technology of slurry shield, and turnover shield slurry specific gravity control is to control shield driving quality
Important foundation.Slurry treatment system, by indexs such as the density of regulation turnover shield machine mud, discharges slag
Soil, provides the mud that disclosure satisfy that stable excavation face for shield.
The most conventional liquid specific density measurement scheme mainly has float-type densimetry, radioactivity same
Position element measurement method, ultrasound wave measurement of concetration method, gradiomanometer etc. four kinds.The following description respectively side of mensuration
Method:
1, float-type densimetry:
It is that the buoyancy utilizing object to be subject in the fluid principle relevant with fluid density measures, stream
The biggest buoyancy of body density is the biggest.But float type densimeter certainty of measurement is poor, and measurement data is without output work
Can, it is only used for the estimation of densimeter value.
2, radiosiotope measurement method:
It is one of measurement method that measuring instruments and current technology maturation relatively early occur, mainly for detection of liquid
The density of the materials such as body, solid, mortar, cement mortar and the detection of metal pulp density, certainty of measurement
Height, fast response time, there is exclusive non-cpntact measurement and the wide feature of the suitability, especially suitable
In testee coarse hard, be corrosive or the mal-condition of High Temperature High Pressure.But radiosiotope
There is production in measurement method detection and maintenance cost is high, and radioactive source has certain wind to environment and operator
Danger, inner-walls of duct fouling and abrasion will cause measurement error, relate to radioactive source and cause buying examination and approval procedures
Loaded down with trivial details, manage and check strict, use after radioactive source be also relatively difficult to the defect that processes.
3, ultrasound wave measurement of concetration method:
Its operation principle is the attenuation variation characteristic utilizing ultrasound wave under variable concentrations medium, uses
Two ultrasonic transducers are used for sending and receiving wave beam, and two transducers are installed on pipeline section two with flushing
Side or one sensor of composition, the spacing of two transducers and the selection of operating frequency are depended on different
Application scenario.But the certainty of measurement that ultrasound wave measurement of concetration method is in being applied to this kind of medium of mortar mud
Poor, and the life-span is short, maintenance cost is high.
4, gradiomanometer
Its operation principle is installation pressure transducer on two positions of height of liquid container or pipeline,
Fluid density is calculated by gathering the difference in height between pressure and two positions on two positions
Value.Two transducers in a sensor between it selection of spacing and operating frequency depend on not
Same application scenario.Though gradiomanometer is applicable to the liquid having certain viscosity and particulate matter,
But in actual applications, when detection liquid need stirring or signal piping in liquid exist resonance and
During standing wave, degree of accuracy will be greatly affected, and two arbitrary faults of pressure transducer of height i.e. cannot
Work, it is difficult to meet precision and the reliability requirement of slurry shield slurry proportion on-line checking.
To sum up, existing liquid specific density measurement scheme is examined online being applied to slurry shield slurry proportion
During survey, still have incomplete and require further improvement part.
Summary of the invention
In view of the foregoing, the present invention provide a kind of muddy water for slurry shield than re-detection device and
Its ratio re-detection method, by arranging upright detection pipe in stock tank side, and is arranged on detection pipe
Multiple (at least three) and each other unequal pressure transducer of difference in height, in upright detection
On pipe, the multiple pressure taps of formation are in order to measure the mud hydraulic pressure in differing heights position, for calculating mud
Slurry proportion, solves the mud speed rate in existing slurry-water balance type shield and fluctuates relatively greatly and homogeneous media journey
Degree is unstable, continuous stirring disturbs proportion on-line checking precision that bigger adverse circumstances are caused and can
By the technical problem that property is the best, really and be effectively improved slurry shield slurry proportion on-line checking
The technique effect of precision.
For achieving the above object, the present invention adopts the technical scheme that provides a kind of for slurry shield
Muddy water is than re-detection device, comprising: stock tank, in order to the circulating mud of accommodating slurry shield, described
Stock tank has relative groove top and bottom land, and described stock tank is provided with sample tap on the cell wall at the bottom of adjacent grooves；
Detection pipe, has an input port and a delivery outlet, and one is uprightly formed at described input port and output
Measurement pipeline section between Kou, described input port connects with the sample tap of described stock tank；At least three pressure
Sensor, is arranged along described measurement pipeline section, and the difference in height between described at least three pressure transducer
Length discrepancy；Described pressure transducer is made to sense described measurement inner tube segment mud in differing heights position
Hydraulic pressure also exports pressure sensitivity signal；System controller, is connected with described pressure transducer, in order to receive
State pressure sensitivity signal；Described system controller exists according to described pressure sensitivity signal and described difference in height computation of mud
Measure the specific gravity data of the differing heights position of pipeline section.
The present invention further improvement is that than re-detection device for the muddy water of slurry shield, described system
System controller has analog-digital converter, calculation procedure module and pressure transducer difference in height data base, its
In, described analog-digital converter is connected with described pressure transducer and calculation procedure module, and described modulus turns
Parallel operation is in order to receive and described pressure sensitivity signal is converted into bit digital value, with output for described calculation procedure
Module calculates；Described pressure transducer difference in height data base is built-in to be had between all pressure transducers
Difference in height, described pressure transducer difference in height data base is connected in order to defeated with described calculation procedure module
Go out difference in height signal to calculate for calculation procedure module；Make described calculation procedure module according to described pressure
Sense signal and the described difference in height signal computation of mud ratio tuple in the differing heights position measuring pipeline section
According to.
The present invention further improvement is that than re-detection device for the muddy water of slurry shield, described extremely
Between few three pressure transducers, there are at least three group difference in height data；Described each difference in height is Length discrepancy
And be not integral multiple.
The present invention further improvement is that than re-detection device for the muddy water of slurry shield, described mud
Water has user operation interface and described system controller and the shield mud of shield than re-detection device
Slurry blood circulation connects, and described user operation interface is in order to receive and to show described system controller meter
The mud weight data drawn, and the work of input operation order control shield slurry blood circulation
Parameter.
The present invention further improvement is that than re-detection device for the muddy water of slurry shield, described slurry
Groove is new stock tank or abandons stock tank；There is the first distance big between the bottom land of described sample tap and described stock tank
In equal to 0.5 meter (D1 0.5m), and have between described sample tap and the low liquid level position of stock tank
Second distance is had to be more than or equal to 0.5 meter (D2 0.5m)；The measurement pipeline section of described detection pipe is with defeated
There is between entrance input pipeline section connection, there is output pipeline section even between described measurement pipeline section and delivery outlet
Logical；Described input pipeline section is provided with circulating pump and provides mud circulation power, the mud tool in described detection pipe
There is mean flow rate 0.15 to 0.6 meter/second (0.15-0.6m/s).
Present invention also offers the muddy water being previously used for slurry shield than the ratio re-detection side of re-detection device
Method, its method step includes:
In the cell wall adjacent grooves bottom of stock tank, sample tap is set；
Detection pipe is upstanding on stock tank side, and the input port of pipe and described sample tap will be detected
Connection；
The measurement pipeline section of detection pipe arranges at least three pressure transducer, and described pressure transducer
Between difference in height unequal；
Described pressure transducer is connected with system controller, makes pressure transducer sensing measure pipeline section different
After the mud hydraulic pressure of height and position, output pressure sensitivity signal out of the ordinary is to system controller；
Described system controller is acquired and few three pressure taps of processing on described measurement pipeline section, it is thus achieved that
Pressure sensitivity signal described at least three groups and described difference in height, to calculate at least three group mud at measurement pipeline section
The specific gravity data of differing heights position.
The present invention is aforementioned be further improvement is that than re-detection method, and described sample tap is arranged on and bottom land
Spacing more than or equal to 0.5 meter of (D1 0.5m) place, and the low liquid of described sample tap and stock tank
The spacing of position, position is more than or equal to 0.5 meter (D2 0.5m).
The present invention is aforementioned be further improvement is that than re-detection method, and described system controller has modulus
Transducer is connected with described pressure transducer and calculation procedure module, makes analog-digital converter receive and incites somebody to action
Described pressure sensitivity signal is converted into bit digital value, calculates with output to described calculation procedure module；Institute
State the built-in difference in height having between all pressure transducers of pressure transducer difference in height data base, described pressure
Force transducer difference in height data base is connected with described calculation procedure module to export difference in height signal for meter
Calculate program module to calculate；Make described calculation procedure module according to described pressure sensitivity signal and described height
Difference signal computation of mud is in the specific gravity data of the differing heights position measuring pipeline section.
The present invention is aforementioned to be further improved by than re-detection method, described system controller and use
Person operates interface and connects, and the mud that system controller will be obtained after detection calculating by calculation procedure module
Slurry specific gravity data output operates interface to user；Described calculation procedure module passes through contrast conting, picks
Except can determine whether the most significantly deviation pressure measurement data into fault pressure tap, and it is defeated to form alarm signal
Go out and warn to user operation interface.
The present invention is aforementioned to be further improved by than re-detection method, and described calculation procedure module is passed through
Contrast conting rejects minority owing to pressure tap and vibration interference resonance point are close or signal disturbing causes
Bias data.
Due to the fact that and have employed above technical scheme so that it is have the advantages that
(1) avoid shield-tunneling construction scene use radioisotope densimeter bring environment,
Personnel health's risk and management, cost of disposal.
(2) improve the densitometric structure of pressure detecting formula, master-plan and computational methods, optimize
The scope of application, improve using effect and reliability.
(3) pressure detecting formula proportion on-line measuring device mud in slurry-water balance type shield is defined
The adverse circumstances that slurry flow velocity fluctuation is relatively big and homogeneous media degree is unstable, continuous stirring interference is bigger should
Use scheme.
Accompanying drawing explanation
Fig. 1 is muddy water of the present invention than re-detection device for the configuration diagram of slurry shield.
Fig. 2 is that muddy water of the present invention shows than slurry transportation parts in re-detection device and pressure transducer configuration
It is intended to.
Fig. 3 is muddy water of the present invention than vertical drop schematic diagram between pressure transducer in re-detection device.
Fig. 4 is the parameter acquiring schematic flow sheet that muddy water of the present invention carries out proportion calculating than re-detection device.
Reference is as follows with the corresponding relation of parts:
Shield 10；Shield slurry blood circulation 11；Stock tank 20；Groove top 21；Bottom land 22；Sample tap 23；
Detection pipe 30；Input port 31；Delivery outlet 32；Measure pipeline section 33；Input pipeline section 34；Circulating pump 341；
Output pipeline section 35；Pressure transducer 40；First pressure transducer 41；Second pressure transducer 42；The
Three pressure transducers 43；System controller 50；Analog-digital converter 51；Calculation procedure module 52；Pressure
Poor (Δ h) the data base 53 of sensor height；User operation interface 60；Difference in height Δ h；First distance
D1；Second distance D2；Pressure sensitivity signal SP；First pressure sensitivity signal SP1；Second pressure sensitivity signal SP2；The
Three pressure sensitivity signal SP3；Difference in height signal SΔh。
Detailed description of the invention
For the benefit of the understanding to the present invention, illustrates below in conjunction with drawings and Examples.
Referring to Fig. 1 to Fig. 4, the present invention provides a kind of muddy water for slurry shield to fill than re-detection
Put and compare re-detection method.Such as Fig. 1, described than re-detection device include being located at shield 10 internal or
Outside stock tank 20 connect with described stock tank 20 to circulate slurry conveyed detection pipe 30, set
Pressure transducer 40 on described detection pipe 30, and be connected with described pressure transducer 40 in order to
Gather, process the pressure sensitivity signal from pressure transducer 40.
As in figure 2 it is shown, described stock tank 20 is in order to the circulating mud of accommodating slurry shield, described stock tank
20 have relative groove top 21 and bottom land 22, and described stock tank 20 is on the cell wall of 22 at the bottom of adjacent grooves
It is provided with sample tap 23.It is also preferred that the left described stock tank 20 can be new stock tank or abandon stock tank；Described sampling
There is the first distance D1 more than or equal to 0.5 meter of (D1 between mouth 23 and the bottom land 22 of described stock tank 20
0.5m), and between described sample tap 23 and the low liquid level position of stock tank 20, there is second distance
D2 is more than or equal to 0.5 meter (D2 0.5m).
Described detection pipe 30 can be the pipeline circulating conveying shield slurry, it is also possible to independent adopts
Sample loop, thus improve the applicable detection range of the present invention.Described detection pipe 30 has an input port
31 and a delivery outlet 32, and one be uprightly formed at the survey between described input port 31 and delivery outlet 32
Buret section 33, described input port 31 connects with the sample tap 23 of described stock tank 20.It is also preferred that the left institute
State detection pipe 30 measurement pipeline section 33 and input port 31 between have input pipeline section 34 connect, described
There is between measurement pipeline section 33 and delivery outlet 32 output pipeline section 35 connect；Described input pipeline section 34 sets
Circulating pump 341 is had to provide mud circulation power, the mud in described detection pipe 30 to have mean flow rate
0.15 to 0.6 meter/second (0.15-0.6m/s).
It should be noted that, the present invention is based on formula: P=ρ .g. Δ h (P: pressure ρ: liquid
Density g:9.8 newton/kilogram (constant) h: the degree of depth of object to liquid level or range difference), compare
Re-computation.Therefore, the measurement pipeline section 33 of described detection pipe 30 adopts upright setting, described " uprightly "
Refer to that the vertical form along gravity direction is arranged, to record difference in height Δ h accurately.
Described at least three pressure transducer 40 is to arrange along described measurement pipeline section 33, and described extremely
Difference in height Δ h Length discrepancy between few three pressure transducers 40 and be not preferably integral multiple；Order is described
Pressure transducer 40 senses the described measurement pipeline section 33 internal mud hydraulic pressure in differing heights position defeated
Go out pressure sensitivity signal SP；In the present embodiment, as it is shown on figure 3, described at least three pressure transducer 40
Between there are at least three group difference in height Δ h data；Thereby, mud flow velocity in detection pipe 30 is reduced
The pipeline that change and mud stirring cause resonates, the standing wave interference to pressure detecting.
Described system controller 50 is connected with described pressure transducer 40, in order to receive described pressure sensitivity letter
Number SP；Described system controller 50 is according to described pressure sensitivity signal SPAnd described difference in height Δ h calculates mud
Starch the specific gravity data in the differing heights position measuring pipeline section 33.
In the present embodiment, as shown in Figure 4, described system controller 50 have analog-digital converter 51,
(Δ h) data base 53, wherein, described modulus turns for calculation procedure module 52 and pressure transducer difference in height
Parallel operation 51 is connected with described pressure transducer 40 and calculation procedure module 52, described analog-digital converter
51 in order to receive and by described pressure sensitivity signal SPIt is converted into 16 bit digital value, with output for described calculating
Program module 52 calculates；Described pressure transducer difference in height (Δ h) data base 53 is built-in have all
Difference in height Δ h between pressure transducer 40, described pressure transducer difference in height (Δ h) data base 53
It is connected to export difference in height signal S with described calculation procedure module 52ΔhFor calculation procedure module 52
Calculate；Make described calculation procedure module 52 according to described pressure sensitivity signal SPAnd described difference in height letter
Number SΔhComputation of mud is in the specific gravity data of the differing heights position measuring pipeline section 33.
Wherein, described pressure transducer 40 is to be inputted described system controller by independent mould signalling channel
50；Described analog-digital converter 51 is A/D converter；And described pressure transducer difference in height (Δ h) number
Can be after pressure transducer 40 is set according to the difference in height Δ h data in storehouse 53, by pressure sensing
Difference in height Δ h data between device 40 are built into described pressure transducer difference in height (Δ h) data base 53
In, or, pressure transducer 40 detect its height relative to other pressure transducers 40 voluntarily
Gap transmits that to be stored in described pressure transducer difference in height (in Δ h) data base 53, follow-up to carry out again
Contrast conting.
Further, as shown in Figure 4, described muddy water has more user operation circle than re-detection device
Face 60 is connected with the shield slurry blood circulation 11 of described system controller 50 and shield 10, institute
State user operation interface 60 in order to receive and to show the mud that described system controller 50 calculates
Specific gravity data, and the running parameter of input operation order control shield slurry blood circulation 11.
It is explained above the present invention muddy water for slurry shield and is embodied as state than re-detection device
Sample, the aforementioned ratio re-detection method than re-detection device of following description.Described method step includes:
At at the bottom of the cell wall adjacent grooves of stock tank 20 22, sample tap 23 is set；
Detection pipe 30 is upstanding on stock tank 20 side, and by the input port 31 of detection pipe 30
Connect with described sample tap 23；
The measurement pipeline section 33 of detection pipe 30 arranges at least three pressure transducer 40, and described pressure
Difference in height Δ h between force transducer 40 is unequal；
Described pressure transducer 40 is connected with system controller 50, makes pressure transducer 40 sensing measure
After the mud hydraulic pressure of pipeline section 33 differing heights position, output out of the ordinary first pressure sensitivity signal SP1, second pressure
Sense signal SP2, the 3rd pressure sensitivity signal SP3To system controller 50；
Described system controller 50 is acquired and few three pressure taps of processing on described measurement pipeline section 33,
Obtain pressure sensitivity signal S described at least three groupsPAnd described difference in height Δ h, to calculate at least three group mud
Specific gravity data in the differing heights position measuring pipeline section 33.
Wherein, described sample tap 23 is preferably arranged on the spacing with bottom land 22 more than or equal to 0.5 public affairs
Chi (D1 0.5m) place, and the spacing of the low liquid level position of described sample tap 23 and stock tank 20
D2 is more than or equal to 0.5 meter (D2 0.5m)；Mean flow rate in described detection pipe 30 pipe is preferable
For 0.15-0.6 meter/second (0.15-0.6m/s).
Wherein, described system controller 50 has analog-digital converter 51 and described pressure transducer 40
And calculation procedure module 52 connects, analog-digital converter 51 is made to receive and by described first pressure sensitivity signal
SP1, the second pressure sensitivity signal SP2, the 3rd pressure sensitivity signal SP3It is converted into the pressure sensitivity signal of 16 bit digital value
SP, calculate with output to described calculation procedure module 52；Described pressure transducer difference in height (Δ
H) the built-in difference in height Δ h having between all pressure transducers 40 of data base 53, described pressure transducer
(Δ h) data base 53 is connected to export difference in height signal difference in height with described calculation procedure module 52
SΔhCalculate for calculation procedure module 52；Described calculation procedure module 52 is made to believe according to described pressure sensitivity
Number SPAnd described difference in height signal SΔhComputation of mud is at the proportion of the differing heights position measuring pipeline section 33
Data.
Wherein, the present invention is by having verification and deviation for the muddy water of slurry shield than re-detection device
Detection function.Specifically, described calculation procedure module 52 can pass through contrast conting, and rejecting can determine whether
The most significantly deviation pressure measurement data for fault pressure tap；And further, by described system controller
50 are connected with user operation interface 60, and system controller 50 will via calculation procedure module 52
The mud weight data output that detection obtains after calculating operates interface 60 to user；Then calculation procedure mould
Block 52 is finding significantly after deviation pressure measurement data, can form alarm signal according to it and export to user
Warning in operation interface 60, has raising system reliability and maintainability, and will remain credible proportion
Calculate data to be averaged to improve the technique effects such as data precision.Additionally, described calculation procedure module
52 can reject minority owing to pressure tap and vibration interference resonance point are close or letter by contrast conting
Number bias data that interference causes, to reduce mechanical disturbance impact, improves data precision.
Separately need to further illustrate, difference in height Δ h data of the present invention are based on following formula (1) meter
Calculate and obtain:
[n × (n-1)]/2 (1)
Wherein, n is the quantity of pressure transducer 40.The most each pressure transducer is to other pressure sensings
All differences in height of device.
Such as Fig. 3, illustrating with three pressure transducers 40, described difference in height Δ h includes first
Pressure transducer the 41 to the second pressure transducer 42 and the difference in height of the 3rd pressure transducer 43
(Δ h=h1-2, h1-3), and the height of the second pressure transducer 42 to the 3rd pressure transducer 43
Difference (Δ h=h2-3), wherein, the difference in height of the second pressure transducer 42 to the first pressure transducer 41
It is equal to the difference in height of the first pressure transducer 41 to the second pressure transducer 42, therefore no longer restatement.
Therefore when arranging four or during five pressure transducers 40, can obtain obtain respectively 6 groups or
The difference in height Δ h data of 10 groups, coordinate the pressure sensitivity signal S that pressure transducer 40 recordsPData, can
Organize mud weight data to calculate more.
The present invention be based on following formula (2) calculate obtain mud balance:
ρ=Δ P/g Δ h (2)
Wherein, Δ P: be that pressure transducer 40 records hydraulic pressure difference；ρ: mud balance (density)；
G: acceleration of gravity (constant)；Difference in height between Δ h: pressure transducer 40.
Such as Fig. 3, the mud weight indicator between the first pressure transducer 41 to the second pressure transducer 42
It is: ρ1-2=(P1-P2)/g·h1-2；Between second pressure transducer 42 to the 3rd pressure transducer 43
Mud balance calculate be: ρ2-3=(P2-P3)/g·h2-3；Also, the first pressure transducer 41 is to the 3rd
Mud balance between pressure transducer 43 is ρ1-3=(P1-P3)/g·h1-3。
It is with by being calculated by data obtained by least three pressure transducer 40 pressure measurement collection, can
To obtain the mud weight data that at least three groups are recorded by differing heights, for the calculating of system controller 50
Program module 52 is compared, is verified and from detection, thus obtains compared to 2 pressure measurement the most more
For specific gravity data accurately.
Above in association with drawings and Examples, the present invention is described in detail, ordinary skill in this area
The present invention can be made many variations example by personnel according to the above description.Thus, some in embodiment is thin
Joint should not constitute limitation of the invention, the present invention by the scope that defines using appended claims as
Protection scope of the present invention.
Claims (10)
1. the muddy water being used for slurry shield is than re-detection device, it is characterised in that including:
Stock tank, in order to the circulating mud of accommodating slurry shield, described stock tank has relative groove top and groove
The end, and described stock tank is provided with sample tap on the cell wall at the bottom of adjacent grooves；
Detection pipe, has an input port and a delivery outlet, and one be uprightly formed at described input port and
Measurement pipeline section between delivery outlet, described input port connects with the sample tap of described stock tank；
At least three pressure transducer, is arranged along described measurement pipeline section, and described at least three pressure passes
Difference in height Length discrepancy between sensor；Described pressure transducer is made to sense described measurement inner tube segment mud
Hydraulic pressure in differing heights position also exports pressure sensitivity signal；
System controller, is connected with described pressure transducer, in order to receive described pressure sensitivity signal；Described
System controller is measuring the different high of pipeline section according to described pressure sensitivity signal and described difference in height computation of mud
The specific gravity data of degree position.
Muddy water for slurry shield the most according to claim 1 than re-detection device, its feature
It is:
Described system controller has analog-digital converter, calculation procedure module and pressure transducer difference in height
Data base, wherein, described analog-digital converter is connected with described pressure transducer and calculation procedure module,
Described analog-digital converter is in order to receive and described pressure sensitivity signal is converted into bit digital value, with output for institute
State calculation procedure module to calculate；Described pressure transducer difference in height data base is built-in all pressure
Difference in height between sensor, described pressure transducer difference in height data base and described calculation procedure module
Connection calculates for calculation procedure module in order to export difference in height signal；Make described calculation procedure module
According to described pressure sensitivity signal and described difference in height signal computation of mud in the differing heights position measuring pipeline section
Specific gravity data.
Muddy water for slurry shield the most according to claim 1 and 2 than re-detection device, its
It is characterised by:
There are between described at least three pressure transducer at least three group difference in height data；Described each height
Difference is Length discrepancy and is not integral multiple.
Muddy water for slurry shield the most according to claim 1 and 2 than re-detection device, its
It is characterised by:
Described muddy water has user operation interface and described system controller and shield than re-detection device
The shield slurry blood circulation of structure connects, and described user operation interface is in order to receive and to show described system
The mud weight data that system controller calculates, and input operation order control shield slurry circulation
The running parameter of system.
Muddy water for slurry shield the most according to claim 1 and 2 than re-detection device, its
It is characterised by:
Described stock tank is new stock tank or abandons stock tank；Have between the bottom land of described sample tap and described stock tank
First distance is more than or equal to 0.5 meter, and has between described sample tap and the low liquid level position of stock tank
Second distance is more than or equal to 0.5 meter；
Having input pipeline section between measurement pipeline section and the input port of described detection pipe to connect, described measurement is managed
Section connects with having output pipeline section between delivery outlet；Described input pipeline section is provided with circulating pump provides mud to follow
Gyration power, the mud in described detection pipe has mean flow rate 0.15 to 0.6 meter/second.
6. the muddy water proportion for slurry shield according to any one of claim 1 to 5
The ratio re-detection method of detection device, it is characterised in that described method includes:
In the cell wall adjacent grooves bottom of stock tank, sample tap is set；
Detection pipe is upstanding on stock tank side, and the input port of pipe and described sample tap will be detected
Connection；
The measurement pipeline section of detection pipe arranges at least three pressure transducer, and described pressure transducer
Between difference in height unequal；
Described pressure transducer is connected with system controller, makes pressure transducer sensing measure pipeline section different
After the mud hydraulic pressure of height and position, output pressure sensitivity signal out of the ordinary is to system controller；
Described system controller is acquired and few three pressure taps of processing on described measurement pipeline section, it is thus achieved that
Pressure sensitivity signal described at least three groups and described difference in height, to calculate at least three group mud at measurement pipeline section
The specific gravity data of differing heights position.
Muddy water for slurry shield the most according to claim 6 is examined than the proportion of re-detection device
Survey method, it is characterised in that:
Described sample tap be arranged on spacing with bottom land more than or equal to 0.5 meter at, and described sampling
Mouth is more than or equal to 0.5 meter with the spacing of the low liquid level position of stock tank.
Muddy water for slurry shield the most according to claim 6 is examined than the proportion of re-detection device
Survey method, it is characterised in that:
Described system controller has analog-digital converter and described pressure transducer and calculation procedure module
Connect, make analog-digital converter receive and described pressure sensitivity signal is converted into bit digital value, with output to institute
State calculation procedure module to calculate；Described pressure transducer difference in height data base is built-in all pressure
Difference in height between sensor, described pressure transducer difference in height data base and described calculation procedure module
Connection calculates for calculation procedure module in order to export difference in height signal；Make described calculation procedure module
According to described pressure sensitivity signal and described difference in height signal computation of mud in the differing heights position measuring pipeline section
Specific gravity data.
Muddy water for slurry shield the most according to claim 8 is examined than the proportion of re-detection device
Survey method, it is characterised in that:
Described system controller is connected with user operation interface, and system controller passes through calculation procedure
The mud weight data output that module obtains after detection being calculated operates interface to user；
Described calculation procedure module passes through contrast conting, rejects can determine whether as fault pressure tap continuously big
Width deviation pressure measurement data, and formed alarm signal output to user operation interface warn.
Muddy water for slurry shield the most according to claim 8 is than the proportion of re-detection device
Detection method, it is characterised in that:
Described calculation procedure module rejects minority due to pressure tap and vibration interference resonance by contrast conting
Point close to or the bias data that causes of signal disturbing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610421833.4A CN105865975A (en) | 2016-06-15 | 2016-06-15 | Slurry proportion detection device and method for slurry shield |
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| CN108593051A (en) * | 2018-04-16 | 2018-09-28 | 浙江易通基础工程有限公司 | Mud balance system based on height difference measuring instrument inside and outside drilling and control method |
| CN109738333A (en) * | 2018-12-29 | 2019-05-10 | 中国地质大学（武汉） | A kind of selective flocculation measure of merit device |
| CN114324060A (en) * | 2022-01-13 | 2022-04-12 | 中铁四局集团第二工程有限公司 | Mud hydrometer for cast-in-situ bored pile |
| CN114354443A (en) * | 2022-01-10 | 2022-04-15 | 思立博(上海)工程咨询有限公司 | Differential pressure type digital display mud proportion detection device |
| CN115639125A (en) * | 2022-12-26 | 2023-01-24 | 四川薪火恒创科技有限公司 | Sludge concentration detection system and method |
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| CN115639125B (en) * | 2022-12-26 | 2023-10-20 | 四川薪火恒创科技有限公司 | Sludge concentration detection system and method |
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