CN110130918A - A kind of single-track railway tunnel full face tunneling rack and its construction method - Google Patents
A kind of single-track railway tunnel full face tunneling rack and its construction method Download PDFInfo
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- CN110130918A CN110130918A CN201910578395.6A CN201910578395A CN110130918A CN 110130918 A CN110130918 A CN 110130918A CN 201910578395 A CN201910578395 A CN 201910578395A CN 110130918 A CN110130918 A CN 110130918A
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- telescopic sleeve
- column
- track railway
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- 230000005641 tunneling Effects 0.000 title claims abstract description 25
- 238000010276 construction Methods 0.000 title claims description 13
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000009412 basement excavation Methods 0.000 claims abstract description 5
- 238000005553 drilling Methods 0.000 claims description 16
- 238000004880 explosion Methods 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 231100000241 scar Toxicity 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 5
- 239000004567 concrete Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 239000011378 shotcrete Substances 0.000 claims description 3
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract 2
- 230000002265 prevention Effects 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/027—Drills for drilling shallow holes, e.g. for taking soil samples or for drilling postholes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/122—Working or loading platforms
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Civil Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of single-track railway tunnel full face tunneling racks, workbench, beam of visiting, rocker beam, ladder, escape bar are overturn including bottom beam, column, side fixed platform, side telescopic sleeve, top workbench, middle part workbench, front telescopic sleeve, middle part, bottom beam top is installed by column, column and visit beam, rocker beam constitute a door type overall structure, side workbench is installed in column side, and beam of visiting installs top workbench；Rocker beam installation middle part workbench；Rocker beam and side workbench install front telescopic sleeve；Installation middle part overturns workbench on the inside of column；Rack is equipped with ladder, installs escape bar between top workbench and ground；Top workbench is equipped with guardrail, can prevent personnel from falling, and ensures operating personnel's safety.Structure of the invention is rationally, human oriented design, section strong applicability, safety prevention measure be capable, the maximum working space for guaranteeing tunnel excavation other processes.
Description
Technical field
The present invention relates to single-track railway tunnel technical field of construction, and in particular to a kind of single-track railway tunnel full face tunneling
Rack and its construction method.
Background technique
Full face method is the common tunneling method of single-track railway tunnel construction of explosion, it have a drillhole blasting,
Primary the characteristics of excavating molding, pushing forward comprehensively.Excavating operation platform is the common tooling excavated in boring procedure.The country opens at present
It digs operation platform and generallys use fashioned iron welding, processing is coarse and crude simple, and hommization, safety, practicability be not high.Therefore, to list
The research of line railway tunnel full face tunneling rack, then innovated great value and significance.
Summary of the invention
It is an object of the invention to overcome the shortcomings of existing excavation operation platform, a kind of single-track railway tunnel tunneling boring is provided
Excavate rack.
The present invention is achieved by the following technical solutions:
A kind of single-track railway tunnel full face tunneling rack, including bottom beam, column, side workbench, middle part overturning work
Make platform, side telescopic sleeve, distribution box, rocker beam, beam of visiting, ladder, top workbench, middle part workbench, front
Telescopic sleeve, escape bar；
Bottom beam quantity is two, is arranged parallel, more to being provided at equal intervals along the length of bottom beam on two bottom beams
A door frame being made of column, beam of visiting, rocker beam by longitudinal short beam connection between each door frame, and then forms the master of rack
Body structure division；
The side workbench is installed in the outside portion of column, the side workbench includes three layers, from bottom to up
Respectively first layer side workbench, second layer side workbench, third layer side workbench；Further, every
It is mounted on side telescopic sleeve on the workbench of layer side, when face out break, side telescopic sleeve can be adjusted
Length reaches scar；
Visiting the top workbench is installed on beam, the middle part workbench is installed on rocker beam；Under described
Front telescopic sleeve is installed on door beam and every layer of side workbench, when front telescopic sleeve is excavated for tunnel tunnel face,
One-shot job platform is set up based on the telescopic sleeve of front, prevents from causing working space insufficient since face is uneven；
Workbench is overturn in the middle part of installing on the inside of the column, for worker in face punching, powder charge, middle part overturns work
Make platform to overturn, when explosion is slagged tap, needs middle part overturning working platform overturning up, keep drag-out slag car smooth out of door frame
Pass through.
In the above-mentioned technical solutions: bottom beam is designed as ship type structure, rubbing between bottom beam and ground when reducing movable stand
Wipe resistance.
In the above-mentioned technical solutions: the side workbench holds air drill drilling for excavating operating personnel, it is contemplated that
Hommization setting, each layer side workbench between the upper and lower away from for 1.8-2.0m, preferably 1.9m.
In the above-mentioned technical solutions: being mounted on protective fence, energy on the top workbench and side workbench
It enough prevents personnel from falling, ensures operating personnel's safety.
In the above-mentioned technical solutions: the structure of the middle part overturning workbench are as follows: the inner end of middle part overturning workbench
It is hinged on column by pin shaft, the outer end of middle part overturning workbench connect with chain block, is controlled by chain block
The overturning of portion's overturning workbench.
In the above-mentioned technical solutions: the escape bar being installed between the top workbench and ground；Escape bar and ground
Face angle is 60-90 degree, and when facing a danger, worker can quickly be slid along the escape bar to ground.
In the above-mentioned technical solutions: excavating and be additionally provided with distribution box on rack, be mounted on any one side workbench
On.
In the above-mentioned technical solutions: excavating rack and ladder is installed, ladder includes being arranged in first layer side workbench
The first ladder for connecting ground and first layer side workbench of lower section is arranged in first layer side workbench and the
The second ladder between two layers of side workbench, be arranged between second layer side workbench and middle part workbench
Three layers of ladder and the 4th ladder being arranged between middle part workbench and top workbench.
The method constructed using single-track railway tunnel full face tunneling rack of the invention is as follows:
Step 1, preparation of construction: drilling device, the routes of pipe line such as wind, water, electricity are gone through before construction；
Middle line is put in step 2, measurement: before excavating drilling, survey crew should carry out tunnel excavation section, middle line and elevation
Surveying and locating；
Step 3, excavate rack it is in place: will excavate rack place it is in place, by all side telescopic sleeves and front
Telescopic sleeve extends to tunnel scar suitable position and spreads steel expanded mesh, and middle part overturning job platform is overturn, so as to
Subsequent artefacts draw hole, drilling and charging；
Step 4 draws blasthole, drilling, powder charge: according to surveying and locating, drawing periphery hole, bottom plate eye and snubber and excavates big gun
Eye position；Periphery hole, snubber and bottom plate eye determine people's positioning, and borehole spacing, angle, depth meet length of shot requirement；It is boring
Forbid set to beat dead hole during hole, and according to rate of penetration, the soft or hard degree of country rock, adjusts volume of air supply and water supply in time；
Step 5, explosion, ventilation: side telescopic sleeve and front telescopic sleeve are withdrawn, and middle part overturns job platform overturning
Up, it and rack will be excavated removes face, personnel carry out explosion to face after withdrawing, and after banger, are aerated, ventilation 15
Minute or more, Detection of Air Quality is up to standard to be allowed for access.
Step 6 is slagged tap: to make drag-out slag car pass through rack, middle part must be overturn to job platform overturning and got on；
Step 7, preliminary bracing: rack end will be excavated to face with loading machine, will be operated according to step 3, to pacify
Fill arch, gunite concrete.
The advantages and benefits of the present invention are:
Rack setting multilayer side workbench, top workbench, middle part workbench are for excavating operating personnel's hand
Air drill drilling is held, workbench spacing is preferably selected in 1.9m, while ensure that operation hommization, and can satisfy job execution sky
Between require.It is covered with steel expanded mesh on platform and protective fence is installed, can prevent personnel from falling, ensures operating personnel's peace
Entirely.
Middle part is installed on the inside of the column and overturns workbench, middle part, which is overturn, uses pin shaft between workbench and column
Connection can be prolonged column by chain block and make 90 ° of spinning movements.When middle part overturning workbench is in a horizontal position, it can meet
Excavate operating personnel's bore operation demand.When in a vertical position, central space is larger, can meet vehicle pass-through requirement.
Single-track railway full face tunneling rack of the invention has escape bar, and when facing a danger, worker can be along described
Escape bar quickly slides onto ground.
Single-track railway full face tunneling rack front of the invention and side workbench have telescopic rod, in stroke range
It is interior arbitrarily to adjust land lengths, facilitate manual work.
It excavates rack and the multilayer ladder is installed, ladder is arranged in two side position of rack rear portion, both meets personnel
It requires up and down, and does not occupy middle part headroom, do not influence vehicle pass-through demand.
Guardrail is installed on the top workbench, can prevent personnel from falling, ensures operating personnel's safety.
Each component of rack uses flanged joint, and ease of assembly, dismounting and transport can reuse, and has warp well
Ji benefit.
Detailed description of the invention
Fig. 1 is the main view of the single-track railway tunnel full face tunneling rack in the embodiment of the present invention；
Fig. 2 is the side view of the single-track railway tunnel full face tunneling rack in the embodiment of the present invention；
Fig. 3 is single-track railway tunnel full face tunneling rack construction method of the present invention.
It is as shown in the figure:
1: bottom beam, 2: column, 3: side workbench, 4: middle part overturning workbench, 5: telescopic sleeve, 6: distribution box,
7: rocker beam, 8: protective fence, 9: beam of visiting, 10: ladder, 11: top workbench, 12: middle part workbench, 13: stretching front
Heat-Shrinkable Tubings, 14: escape bar, 3-1: first layer side workbench, 3-2: second layer side workbench, 3-3: third layer side
Workbench, the 10-1: the first ladder, the 10-2: the second ladder, 10-3: third ladder, the 10-4: the four ladder.
It for those of ordinary skill in the art, without creative efforts, can be according to above attached
Figure obtains other relevant drawings.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, combined with specific embodiments below furtherly
Bright technical solution of the present invention.
Embodiment one
As shown in figure 1 and 2, a kind of single-track railway tunnel full face tunneling rack, including bottom beam 1, column 2, side work
Make platform 3, middle part overturning workbench 4, side telescopic sleeve 5, distribution box 6, rocker beam 7, protective fence 8, visit beam 9, ladder
10, top workbench 11, middle part workbench 12, front telescopic sleeve 13, escape bar 14.Above each component is suitable
It is processed using steel material, preferably uses bolt flange form to connect between each component, and carry out necessary rigidity and stabilization
The calculating of property.
1 quantity of bottom beam is two, is arranged parallel, and bottom beam is designed as ship type structure, when reducing movable stand bottom beam with
Frictional resistance between ground, it is multiple by column 2, beam of visiting to being provided at equal intervals along the length of bottom beam on two bottom beams 1
9, the door frame that rocker beam 7 forms on each bottom beam 1 (that is, equidistantly install multiple columns 2, in same cross section
One visit beam 9 and a rocker beam 7 are installed between two columns 2, beam 9 is visited and rocker beam 7 is connected horizontally on column,
And beam 9 of visiting is located at the top of rocker beam 7, two columns 2 of same cross section and visit beam 9 and the composition of rocker beam 7 one
Portal-framed structure), by longitudinal short beam connection between each door frame, and then form the body structure portion of rack.
The side workbench 3 is installed in the outside portion of column 2, the side workbench 3 includes three layers, from down toward
Upper is respectively first layer side workbench 3-1, second layer side workbench 3-2, third layer side workbench 3-3, institute
It states side workbench and holds air drill drilling for excavating operating personnel, it is contemplated that hommization setting, each layer side workbench
Between the upper and lower away from being preferably selected in 1.9m or so；Further, it is mounted on side telescopic sleeve 5 on every layer of side workbench,
When face out break, the length that can adjust side telescopic sleeve 5 reaches scar.
Visiting the top workbench 11 is installed on beam 9, the middle part workbench 12 is installed on rocker beam 7；
Front telescopic sleeve 13 is installed, front telescopic sleeve can be used for the tunnel palm on the rocker beam 7 and every layer of side workbench 3
When sub- face is excavated, one-shot job platform is set up based on the telescopic sleeve of front, prevents from causing to make since face is uneven
Industry insufficient space.Further, it is mounted on protective fence 8 on the top workbench 11 and side workbench 3, it can
It prevents personnel from falling, ensures operating personnel's safety.
Workbench 4 is overturn in the middle part of installing on the inside of the column 2, worker is in face punching, powder charge, middle part overturning
Workbench 4 is overturn, as shown in Fig. 1；When explosion is slagged tap, needs that middle part is overturn to the overturning of workbench 4 up, use
The slag car is passed through out of door frame.Further, the structure of the middle part overturning workbench 4 are as follows: it is flat that middle part overturns work
The inner end of platform 4 is hinged on column 2 by pin shaft, and the outer end of middle part overturning workbench 4 is connect with chain block, by pulling
The overturning of cucurbit control middle part overturning workbench 4.
It excavates rack and ladder 10 is installed, ladder includes being arranged in below the workbench 3-1 of first layer side to be used to connect
The first ladder 10-1 of ground plane and first layer side workbench 3-1, it is arranged in first layer side workbench 3-1 and second
The second ladder 10-2, setting between layer side workbench 3-2 is in second layer side workbench 3-2 and middle part workbench
Third layer ladder 10-3 between 12 and the 4th ladder being arranged between middle part workbench 12 and top workbench 11
10-4。
The escape bar 14 is installed between the top workbench 11 and ground；Escape bar 14 and ground angle are 90
Degree, when facing a danger, worker can quickly be slid along the escape bar 14 to ground.
Embodiment two
As shown in figure 3, illustrating construction method of the invention:
Step 1, preparation of construction: drilling device, the routes of pipe line such as wind, water, electricity are gone through before construction.
Middle line is put in step 2, measurement: before excavating drilling, survey crew should carry out tunnel excavation section, middle line and elevation
Surveying and locating.
Step 3, excavate rack it is in place: will excavate rack place it is in place, by all side telescopic sleeves 5 and front
The elongation of telescopic sleeve 13 is to tunnel scar suitable position and spreads steel expanded mesh, and middle part overturning job platform 4 is overturn, with
Just subsequent artefacts draw hole, drilling and charging.
Step 4 draws blasthole, drilling, powder charge: according to surveying and locating, drawing periphery hole, bottom plate eye and snubber and excavates big gun
Eye position；Periphery hole, snubber and bottom plate eye determine people's positioning, and borehole spacing, angle, depth meet length of shot requirement；It is boring
Forbid set to beat dead hole during hole, and according to rate of penetration, the soft or hard degree of country rock, adjusts volume of air supply and water supply in time；Priming system
Receive, powder charge and detonation must be completed by holding the fireman of effective fragmentation card, it is necessary to clog blasthole with stemming.
Step 5, explosion, ventilation: side telescopic sleeve and front telescopic sleeve are withdrawn, and middle part overturning job platform 4 turns over
Turn up, and rack will be excavated and remove face, personnel carry out explosion to face after withdrawing, after banger, it is necessary to it is aerated,
Ventilation 15 minutes or more, Detection of Air Quality is up to standard to be allowed for access.
Step 6 is slagged tap: to make drag-out slag car pass through rack, middle part must be overturn to job platform overturning and got on.
Step 7, preliminary bracing: rack end will be excavated to face with loading machine, will be operated according to step 3, to pacify
Fill arch, gunite concrete.
Embodiment three
Further, it excavates on rack and is additionally provided with distribution box 6, be mounted on any one side workbench.
The spatially relative terms such as "upper", "lower", "left", "right" have been used in embodiment for ease of explanation, have been used for
Relationship of the elements or features relative to another elements or features shown in explanatory diagram.It should be understood that in addition to figure
Shown in except orientation, spatial terminology is intended to include the different direction of device in use or operation.For example, if in figure
Device be squeezed, the element for being stated as being located at other elements or feature "lower" will be located into other elements or feature "upper".
Therefore, exemplary term "lower" may include both upper and lower orientation.Device, which can be positioned in other ways, (to be rotated by 90 ° or position
In other orientation), it can be interpreted accordingly used herein of the opposite explanation in space.
Moreover, the relational terms of such as " first " and " second " or the like are used merely to one with another with identical
The component of title distinguishes, without necessarily requiring or implying between these components there are any this actual relationship or
Sequentially.
Illustrative description has been done to the present invention above, it should explanation, the case where not departing from core of the invention
Under, any simple deformation, modification or other skilled in the art can not spend the equivalent replacement of creative work equal
Fall into protection scope of the present invention.
Claims (10)
1. a kind of single-track railway tunnel full face tunneling rack, it is characterised in that: including bottom beam, column, side workbench, in
Portion overturns workbench, side telescopic sleeve, distribution box, rocker beam, beam of visiting, top workbench, middle part workbench, preceding
Portion's telescopic sleeve, escape bar；
Bottom beam quantity be two, be arranged parallel, on two bottom beams along the length of bottom beam to be provided at equal intervals it is multiple by
Column, beam of visiting, rocker beam composition door frame, by longitudinal short beam connection between each door frame, and then form the main body knot of rack
Structure part；
The side workbench is installed in the outside portion of column, the side workbench includes three layers, is distinguished from bottom to up
For first layer side workbench, second layer side workbench, third layer side workbench；Further, every layer of side
It is mounted on side telescopic sleeve on portion's workbench, when face out break, the length of side telescopic sleeve can be adjusted
Reach scar；
Visiting the top workbench is installed on beam, the middle part workbench is installed on rocker beam；The rocker beam
With front telescopic sleeve is installed on every layer of side workbench, when front telescopic sleeve is excavated for tunnel tunnel face, in the past
One-shot job platform is set up based on portion's telescopic sleeve, prevents from causing working space insufficient since face is uneven；
Workbench is overturn in the middle part of installing on the inside of the column, for worker in face punching, powder charge, it is flat that middle part overturns work
Platform is overturn, and when explosion is slagged tap, is needed middle part overturning working platform overturning up, is led to drag-out slag car smoothly out of door frame
It crosses.
2. single-track railway tunnel full face tunneling rack according to claim 1, it is characterised in that: bottom beam is designed as ship type
Structure, frictional resistance when reducing movable stand between bottom beam and ground.
3. single-track railway tunnel full face tunneling rack according to claim 1, it is characterised in that: each layer side work is flat
Platform between the upper and lower away from for 1.8-2.0m.
4. single-track railway tunnel full face tunneling rack according to claim 1, it is characterised in that: each layer side work is flat
Platform between the upper and lower away from for 1.9m.
5. single-track railway tunnel full face tunneling rack according to claim 1, it is characterised in that: work on the top
Protective fence is mounted on platform and side workbench.
6. single-track railway tunnel full face tunneling rack according to claim 1, it is characterised in that: the middle part overturns work
Make the structure of platform are as follows: the inner end of middle part overturning workbench is hinged on column by pin shaft, and middle part overturns workbench
Outer end is connect with chain block, and the overturning of middle part overturning workbench is controlled by chain block.
7. single-track railway tunnel full face tunneling rack according to claim 1, it is characterised in that: the top work is flat
The escape bar is installed between platform and ground.
8. single-track railway tunnel full face tunneling rack according to claim 7, it is characterised in that: escape bar and ground press from both sides
Angle is 60-90 degree.
9. single-track railway tunnel full face tunneling rack according to claim 1, it is characterised in that: excavate rack and be equipped with
Ladder, ladder include being arranged in below the workbench of first layer side to be used to connect ground and first layer side workbench
First ladder, the second ladder being arranged between first layer side workbench and second layer side workbench, setting are the
Third layer ladder and setting between two layers of side workbench and middle part workbench is in middle part workbench and top work
Make the 4th ladder between platform.
10. the method for carrying out constructing tunnel using single-track railway tunnel full face tunneling rack described in claim 1, feature
It is, includes the following steps:
Step 1, preparation of construction: drilling device, the routes of pipe line such as wind, water, electricity are gone through before construction；
Middle line is put in step 2, measurement: before excavating drilling, survey crew copes with tunnel excavation section, middle line and elevation and measures
Setting-out；
Step 3, excavate rack it is in place: will excavate rack place it is in place, all side telescopic sleeves and front are stretched
Casing extends to tunnel scar suitable position and spreads steel expanded mesh, and middle part overturning job platform is overturn, so as to subsequent
It is artificial to draw hole, drilling and charging；
Step 4 draws blasthole, drilling, powder charge: according to surveying and locating, drawing periphery hole, bottom plate eye and snubber and excavates borehole position
It sets；Periphery hole, snubber and bottom plate eye determine people's positioning, and borehole spacing, angle, depth meet length of shot requirement；It was drilling
Forbid set to beat dead hole in journey, and according to rate of penetration, the soft or hard degree of country rock, adjusts volume of air supply and water supply in time；
Step 5, explosion, ventilation: side telescopic sleeve and front telescopic sleeve are withdrawn, and middle part is overturn in job platform overturning
It goes, and rack will be excavated and remove face, personnel carry out explosion to face after withdrawing, and after banger, are aerated, divulge information 15 points
More than clock, Detection of Air Quality is up to standard to be allowed for access；
Step 6 is slagged tap: to make drag-out slag car pass through rack, middle part must be overturn to job platform overturning and got on；
Step 7, preliminary bracing: rack end will be excavated to face with loading machine, will be operated according to step 3, to install arch
Frame, gunite concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910578395.6A CN110130918A (en) | 2019-06-28 | 2019-06-28 | A kind of single-track railway tunnel full face tunneling rack and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910578395.6A CN110130918A (en) | 2019-06-28 | 2019-06-28 | A kind of single-track railway tunnel full face tunneling rack and its construction method |
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| CN110130918A true CN110130918A (en) | 2019-08-16 |
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ID=67566776
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| CN201910578395.6A Pending CN110130918A (en) | 2019-06-28 | 2019-06-28 | A kind of single-track railway tunnel full face tunneling rack and its construction method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN113622940A (en) * | 2021-09-15 | 2021-11-09 | 中国华电科工集团有限公司 | Drilling and blasting platform frame |
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