CN217155868U - Multiple tunnel co-construction test model device - Google Patents
Multiple tunnel co-construction test model device Download PDFInfo
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- CN217155868U CN217155868U CN202220246723.XU CN202220246723U CN217155868U CN 217155868 U CN217155868 U CN 217155868U CN 202220246723 U CN202220246723 U CN 202220246723U CN 217155868 U CN217155868 U CN 217155868U
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Abstract
The utility model discloses a plurality of tunnels are built experimental model device altogether, this scheme is through setting up the ground body in the system frame, then use pressure sensing unit, displacement meter as stress deformation monitoring system, a plurality of camera unit are as camera system, multiunit pressure application assembly is as the system of exerting pressure, rig cooperation moving mechanism is as manipulator excavation system and so on, makes it carry out the tunnel excavation simulation at the ground body analog system who uses the ground body as the main carrier, through the utility model discloses can become more meticulous, acquire visually and close on underground cavern structure and country rock system interact action, and go on deep analysis to the cavern that acquires, country rock stress field, displacement field, be convenient for deeply explore the mechanical principle that the tunnel influences each other, provide technical support and theoretical foundation for the proposition of reasonable construction order.
Description
Technical Field
The utility model relates to an engineering analogue means field especially relates to a test model device is built altogether in a plurality of tunnels.
Background
With the increasing density of ground buildings and the smaller and smaller available space on the ground, people gradually turn their eyes to the underground. At present, in order to meet the needs of economic construction and urban development, a large number of underground building structures such as subway tunnels, railway or highway tunnels, utility tunnels, underground parking lots and the like are built in the underground of a large number of two-wire cities, and due to intensive development of underground spaces, various complex structural interaction and environmental problems and the like such as surface subsidence, peripheral building inclination and cracking, pipeline breakage and the like are inevitably caused, and the problems become urgent to be solved in urban modern construction. The construction mechanical characteristics and environmental influence conditions of a plurality of cavities are not fully understood, and the fact that a scientific and reasonable construction sequence or construction method is not adopted is the root of the series of environmental problems caused by group cavity construction. Therefore, the research on the multi-tunnel co-construction interaction and the environmental influence problem in the urban underground space development is an important research subject.
In engineering practice, parallel or up-down cross and diagonal construction of subway tunnels, highway tunnels, comprehensive pipe gallery tunnels and the like are normal, and due to the fact that the use functions, section forms, stratum conditions, environmental characteristics and the like of all tunnels are different, the adopted tunnel construction method and the generated construction mechanical characteristics are different. In addition, the optimization problems of excavation construction methods, support measures, excavation sequences and the like are inevitably generated in the construction process near the cavern, so that the influence of the construction on the tunnel, the surrounding rock and the environment is reduced to the minimum, and therefore the experimental study considering the construction process of the adjacent group tunnel, the development of mechanical property analysis and the optimization of the construction scheme are particularly important.
Disclosure of Invention
In view of this, the present invention provides a multi-tunnel co-building test model device with reliable simulation, convenient implementation, flexible operation and good data reference.
In order to realize the technical purpose, the utility model adopts the technical scheme that:
a plurality of tunnels build experimental model device altogether, it includes:
the test framework is of a box-type framework structure, and a test simulation area is formed in the box-type framework structure;
the rock-soil body is arranged in the test frame, one end of the rock-soil body faces the other end of the test frame;
the pressure applying assemblies are in multiple groups and respectively correspond to the horizontal two sides and the upper end surface of the rock-soil body, one end of each pressure applying assembly is abutted against the surface of the rock-soil body, and the other end of each pressure applying assembly is fixedly connected with the test frame to fix the rock-soil body in the test frame;
the drilling machine is arranged between the rock-soil body and the other end of the test frame and is provided with a drill bit, and the drill bit faces one end face of the rock-soil body;
the moving mechanism is arranged at the upper end of the test frame and is connected with the drilling machine through a connecting piece, so that the drilling machine is suspended in the test frame, and the moving mechanism assists in moving the drilling machine;
the camera shooting units are arranged at the other end of the test frame in an array mode, and the image shooting ends of the camera shooting units face to one end face of the rock-soil body.
As a possible implementation, further, the pressing assembly includes:
the steel panels are in one-to-one correspondence with the upper end surface and the horizontal two sides of the rock-soil body and are fixedly arranged on the side surface of the test frame opposite to the upper end surface or the horizontal two sides of the rock-soil body;
the top supporting unit is a plurality of groups and each group of top supporting unit corresponds to one steel panel, the top supporting unit comprises a plurality of hydraulic oil cylinders distributed in an array mode, the main bodies of the hydraulic oil cylinders are fixed on the steel panels, piston rods of the hydraulic oil cylinders are abutted to rock-soil bodies, and the rock-soil bodies are fixed in the test frame.
As a possible implementation manner, further, the moving mechanism comprises a translation assembly and a lifting assembly, the translation assembly is arranged on the test frame above the drilling machine, the lifting assembly is connected with the translation assembly, the drilling machine is connected with the lifting assembly through a connecting piece, the translation assembly drives the lifting assembly and the drilling machine to translate between the rock and soil body and the other end of the test frame, and the lifting assembly drives the drilling machine to lift.
As a preferred implementation option, the connecting member is preferably a universal rotating shaft.
As a possible implementation manner, further, the camera unit is a plurality of variable focus cameras which are arranged at the other end of the test frame in an array, and the test frame is fixedly connected with the camera unit through a clamping assembly.
As a preferred implementation option, preferably, the clamping assembly comprises:
the first mounting plates are arranged oppositely and are provided with waist-shaped grooves extending to two ends in the length direction;
the second mounting plates are arranged in parallel, and two ends of each second mounting plate are detachably locked and fixed on the pair of first mounting plates through locking bolts and nuts;
and the clamping units are in sliding connection with the second mounting plate, and correspond to the camera shooting units one to one and are connected in a clamping manner.
As a preferred implementation option, it is preferred that the clamping unit includes:
the first connecting plate is of a v-shaped structure 21274, and a first cushion is arranged at the lower side in the v-shaped structure 21274;
the screw rod end of the first bolt is threaded into the v-21274of the first connecting plate from the upper side of the first connecting plate;
the upper end face of the first clamping plate is in rotary connection with the tail end in the V-shaped structure through a rotary connecting piece and a first bolt penetrating into the V-shaped structure 21274of the first connecting plate, the lower end face of the first connecting plate is provided with a second soft cushion, and a clamping area for clamping the camera shooting unit is formed between the first soft cushion and the second soft cushion;
the second connecting plate is fixed on the side surface of the first connecting plate far away from the opening side of the first connecting plate, the second mounting plate is an Contraband-shaped plate which is a v-shaped 21274, the lower side of the shape is provided with a first sliding groove which is a v-shaped 21274, the upper side of the shape is provided with a second sliding groove, and the second connecting plate penetrates into a v-shaped 21274of the second mounting plate;
the screw end of the second bolt penetrates into the v-21274of the second mounting plate through the second sliding groove, is in threaded connection with the upper end face of the second connecting plate and slidably restrains the second connecting plate in the v-21274of the second mounting plate;
the second clamping plate is arranged between the second connecting plate and the lower side of the V-shaped structure of the second mounting plate;
one end of the pull rod penetrates into the v-21274of the second mounting plate through the first sliding groove, the pull rod is arranged in the shape structure and is fixedly connected with the second clamping plate, and the other end of the pull rod is exposed out of the second mounting plate;
and the spring is sleeved at the end part of the pull rod penetrating into the second mounting plate and is respectively propped against the second clamping plate and the second mounting plate, so that the second clamping plate is propped and restrained in the v-21274-shaped structure of the second mounting plate.
As a preferred implementation option, it is preferred that the upper end surface of the second splint is further provided with a third cushion.
As a preferred implementation choice, the scheme further includes:
the pressure sensing units are arranged in the rock-soil body in a plurality of pre-buried modes and used for sensing the internal pressure change of the rock-soil body when the rock-soil body is excavated by the drilling machine.
The displacement meters are arranged on the surface of the rock-soil body and used for sensing the displacement distance of the rock-soil body excavated by the drilling machine.
Based on the above scheme, the utility model provides a test method of a plurality of tunnels test model device is built altogether still, it includes the aforesaid a plurality of tunnels test model device is built altogether, test method includes following step:
s01, model sample loading: according to the requirements of preset research, rock and soil masses obtained from an engineering site are layered and loaded into a model box, then are subjected to standing, rolling, appearance arrangement and forming, and meanwhile, pressure sensing units are pre-embedded, and then are placed in a model frame after reaching the preset specification;
s02, laying a test monitoring system: arranging a displacement meter on the surface of a rock-soil body molded to a preset specification according to preset conditions and requirements, and installing a camera unit to arrange the camera unit at a preset position;
s03, loading the model, loading different pressures on the rock-soil body through the pressure applying assembly according to the preset requirement, and simulating the pressure or load action condition of the rock-soil body at different layers;
s04, starting the drilling machine, driving a drill bit of the drilling machine to carry out excavation simulation on the rock and soil mass through the moving mechanism, and simultaneously monitoring through the pressure sensing unit, the displacement meter and the camera unit;
s05, acquiring surrounding rock stress field, displacement field and surface subsidence data of the drilling machine in the process of excavating the rock-soil body, and analyzing the action behaviors between tunnels and between the tunnels and the surrounding rocks.
Adopt foretell technical scheme, compared with the prior art, the utility model, its beneficial effect who has is: this scheme is through setting up the ground body in the system frame, then regard as stress deformation monitoring system with pressure sensing unit, displacement meter, a plurality of camera units as camera system, multiunit subassembly of exerting pressure as system of exerting pressure, rig cooperation moving mechanism and regard as manipulator excavation system etc. makes it carry out the tunnel excavation simulation at the ground body analog system who uses the ground body as the main carrier, through the utility model discloses can become more meticulous, obtain visually and close on underground cavern structure and country rock system interact action to carry out deep analysis to the cavern that acquires, country rock stress field, displacement field, be convenient for deep explore the mechanical mechanism that the tunnel influences each other, provide technical support and theoretical foundation for the proposition of reasonable construction order. Moreover, China is one of the countries with the largest tunnel and underground engineering scale, the most complex situation and the most rapid development in the world. Under the large background, the clear distance of the tunnel is smaller and smaller under the conditions of terrain, geology, linearity and the like, so that a large number of engineering examples of the group-hole tunnel appear in the actual engineering, and the mutual influence is the essence that the porous tunnel is different from the separated tunnel. The construction effects of adjacent caverns are mutually superposed to generate a 'group cavern effect', so that the construction mechanical characteristics and the space-time effect of the tunnel become more complicated. The utility model discloses the technique has very strong guiding meaning to the little clear distance that exists extensively, intercrossing's crowd's hole tunnel technical optimization, and application prospect is wide.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a model device according to the present invention;
FIG. 2 is a schematic diagram of a clamping assembly of the model device according to the present invention;
fig. 3 is a second schematic structural diagram of the clamping assembly of the model device of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be noted that the following examples are only for illustrating the present invention, but do not limit the scope of the present invention. Similarly, the following embodiments are only some but not all embodiments of the present invention, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
As shown in fig. 1, the present scheme is a multiple tunnel co-construction test model apparatus, which includes:
the test frame 1 is of a box-type frame structure, and a test simulation area is formed in the box-type frame structure;
the rock-soil body 7 is arranged in the test frame 1, one end of the rock-soil body is arranged at one end, and one end face of the rock-soil body faces the other end of the test frame 1;
the multiple groups of pressure applying assemblies respectively correspond to the two horizontal sides and the upper end face of the rock-soil mass 7, one end of each pressure applying assembly abuts against the surface of the rock-soil mass 7, the other end of each pressure applying assembly is fixedly connected with the test frame 1, and the rock-soil mass 7 is fixed in the test frame 1;
the drilling machine 5 is arranged between the rock-soil body 7 and the other end of the test frame 1, and the drilling machine 5 is provided with a drill bit which faces one end face of the rock-soil body 7;
the moving mechanism is arranged at the upper end of the test frame 1 and is connected with the drilling machine 5 through a connecting piece, so that the drilling machine 5 is suspended in the test frame 1, and the moving mechanism assists in moving the drilling machine 5;
the camera unit 2 is a plurality of camera units and is arranged at the other end of the test frame 1 in an array mode, and the image shooting end of the camera unit 2 faces to one end face of the rock-soil body.
Wherein, in this scheme, the subassembly of exerting pressure includes:
the steel panels 9 are in one-to-one correspondence with the upper end surface and the horizontal two sides of the rock-soil mass 7 and are fixedly arranged on the side surface of the test frame 1 opposite to the upper end surface or the horizontal two sides of the rock-soil mass 7;
the top bracing unit 6 is that multiunit and every group top bracing unit correspond with a steel panel 9, the top bracing unit is including being a plurality of hydraulic cylinder that the array was laid, and a plurality of hydraulic cylinder's main part is fixed on steel panel 9, and its piston rod offsets with ground body 7, fixes ground body 7 in experimental frame 1.
In the scheme, the moving mechanism comprises a translation assembly 4 and a lifting assembly 8, the translation assembly 4 is arranged on the test frame 1 above the drilling machine 5, the lifting assembly 8 is connected with the translation assembly 4, the drilling machine 5 is connected with the lifting assembly 8 through a connecting piece 3, the translation assembly drives the lifting assembly 8 and the drilling machine 5 to translate between the rock-soil body 7 and the other end of the test frame 1, and the lifting assembly 8 drives the drilling machine 5 to lift; as a preferred implementation option, the connecting member 3 is preferably a universal rotating shaft capable of rotating 360 degrees, and the translation assembly 4, the lifting assembly 8, the rotating shaft (which may be a multi-degree-of-freedom manipulator) and the drilling machine of the present embodiment are all commercially available products, and are disposed in the test frame 1, so that the work control can be performed through a controller (a remote test terminal, such as a laptop, a tablet computer, or a desktop computer).
In the scheme, the camera shooting unit 2 is a plurality of variable-focus cameras which are arranged at the other end of the test frame 1 in an array mode, and the test frame is fixedly connected with the camera shooting unit 2 through a clamping assembly; preferably, the clamping assembly comprises:
a pair of first mounting plates 211, which are oppositely disposed and have waist-shaped grooves 2111 extending to both ends in the length direction;
the second mounting plates 212 are arranged in parallel, and two ends of the second mounting plates 212 are detachably locked and fixed on the pair of first mounting plates 211 through locking bolts 2121 and nuts respectively;
the clamping units 213 are multiple and are slidably connected to the second mounting plate 212, and the clamping units 213 are in one-to-one correspondence with the camera units 2 and are correspondingly clamped and connected; preferably, the clamping unit 213 includes:
the first connecting plate 2131 is a v-21274-shaped structure, and a first cushion 2139 is arranged on the lower side in the v-21274-shaped structure;
a first bolt 2138, the screw end of which is threaded into the v-21274of the first connecting plate 2131 from the upper side of the first connecting plate 2131;
the upper end surface of the first clamping plate 2137 is penetrated into a clip 21274of the first connecting plate 2131 through a rotating connecting piece 21381 and a first bolt 2138, the tail end in the rectangular structure is rotatably connected, the lower end surface of the first connecting plate 2131 is provided with a second soft pad 21371, and a clamping area for clamping the camera unit 2 is formed between the first soft pad 2139 and the second soft pad 21371;
the second connecting plate 2132 is fixed on the side surface of the first connecting plate 2131 far away from the opening side of the first connecting plate, the second mounting plate 212 is a v-shaped 21274, the lower side of the v-shaped plate is provided with a first sliding groove 2123, the upper side of the v-shaped plate is provided with a second sliding groove 2122, and the second connecting plate 2132 penetrates into the v-shaped 21274of the second mounting plate 212;
a second bolt 2133, the screw end of which penetrates into the v-21274of the second mounting plate 212 through a second sliding groove 2122, is arranged in the shape structure and is in threaded connection with the upper end surface of the second connecting plate 2132, and the second connecting plate 2132 is slidably constrained in the v-21274of the second mounting plate 212;
a second clamping plate 2134 disposed between the second connecting plate 2132 and the underside of the v-shaped structure 21274of the second mounting plate 212;
one end of the pull rod 214 penetrates into the v-21274of the second mounting plate 212 through the first sliding groove 2123, is fixedly connected with the second clamping plate 2134 in the shape of a cone, and the other end of the pull rod is exposed out of the second mounting plate;
the spring 2136 is sleeved on the end part of the pull rod 214 penetrating into the second mounting plate 212 and is respectively abutted against the second clamping plate 2134 and the second mounting plate 212, so that the second clamping plate 2134 abuts against and restrains the second connecting plate 2132 in the v-21274-shaped structure of the second mounting plate 212, under the scheme, the abutting restraint on the second connecting plate 2132 can be released only by pulling the pull rod 214 and compressing the spring 2136, at the moment, an operator can pull the first connecting plate 2131 to horizontally move the clamping unit 213, the pull rod 214 can also slide along the first sliding groove 2123, and the second connecting plate 2132 can be abutted against and fixed on the second mounting plate 212 again by releasing the pull rod.
In order to be more easily disengaged from the second connecting plate 2132, in this embodiment, it is preferable that a third soft pad 2135 is further provided on the upper end surface of the second clamping plate 2134.
In this scheme, as an optimal scheme, this scheme still includes:
the pressure sensing units are arranged in the rock-soil body 7 in a plurality of pre-buried modes and used for sensing the internal pressure change of the rock-soil body when the rock-soil body is excavated by the drilling machine.
The displacement meters are arranged on the surface of the rock-soil body 7 and used for sensing the displacement distance of the rock-soil body excavated by the drilling machine 5.
Based on the above scheme, the utility model provides a test method of a plurality of tunnels test model device is built altogether still, it includes the aforesaid a plurality of tunnels test model device is built altogether, test method includes following step:
s01, model sample loading: according to the requirements of preset research, rock and soil masses obtained from an engineering site are layered and loaded into a model box, then are subjected to standing, rolling, appearance arrangement and forming, and meanwhile, pressure sensing units are pre-embedded, and then are placed in a model frame after reaching the preset specification;
s02, laying a test monitoring system: arranging a displacement meter on the surface of a rock-soil body molded to a preset specification according to preset conditions and requirements, and installing a camera unit to arrange the camera unit at a preset position;
s03, loading the model, loading different pressures on the rock-soil body through the pressure applying assembly according to the preset requirement, and simulating the pressure or load action condition of the rock-soil body at different layers;
s04, starting the drilling machine, driving a drill bit of the drilling machine to carry out excavation simulation on the rock and soil mass through the moving mechanism, and simultaneously monitoring through the pressure sensing unit, the displacement meter and the camera unit;
s05, acquiring surrounding rock stress field, displacement field and surface subsidence data of the drilling machine in the process of excavating the rock-soil body, and analyzing the action behaviors between tunnels and between the tunnels and the surrounding rocks.
As an example of simulation, in the above implementation structure form, the implementation process is as follows:
(1) and (6) loading the model. And according to the research requirement, obtaining rock and soil mass from the engineering field and loading the sample. Rock-soil bodies are loaded into a model box in a layered mode, and are sequentially loaded through procedures of standing, rolling and the like until the rock-soil bodies reach the preset height.
(2) And (6) laying a monitoring system. The monitoring system mainly comprises a soil pressure cell, a displacement meter, a high-multiple photographic system and the like. The soil pressure box is arranged in the rock-soil body and can be embedded in the sample loading process so as to monitor the stress change condition of the surrounding rock. The displacement meter can be arranged on the surface of a rock-soil body, a middle rock wall and other parts to monitor the surface subsidence and the deformation of the middle rock wall. The high-power photography system is fixed on the system frame, as shown in fig. 1, the camera can move along a slide rail on the frame, and actual conditions of excavation of the tunnel portal section can be obtained from different angles according to research needs. And drawing a square grid on the vertical surface of the opening so as to analyze the deformation condition of the opening section through a high-definition image recognition technology and visually analyze the deformation and cracking conditions of the rock and soil body.
(3) And (6) loading the model. According to research needs, the rock-soil body is loaded through a jack pressurizing system and a top steel plate so as to simulate different layer pressure or load action conditions. In the pressure application system, an oil jack is fixed on a base at the top end, the pressure application position can be adjusted by adjusting the position of the base, and uniform load, concentrated load and bias load can be applied according to research requirements; the steel panels are used as rock-soil body partition plates and are arranged on two sides of the rock-soil body to restrain the rock-soil body from deforming in the horizontal direction.
(4) And (6) excavating the tunnel. The mechanical arm can freely move in a horizontal track and a vertical track which are arranged in a system frame, the position and the angle of the drill bit and the drill bit mechanical arm are adjusted through a 360-degree rotating shaft, and the function of automatically and accurately adjusting the excavation position is achieved. Excavation drill bit quantity can carry out nimble setting according to tunnel quantity, and scalable excavation arm is connected to the excavation drill bit for the excavation construction of simulation highway tunnel, subway tunnel or piping lane tunnel etc.
(5) And analyzing the obtained data of the stress field, the displacement field, the surface subsidence and the like of the surrounding rock, and discussing the interaction behaviors among tunnels, between tunnels and the surrounding rock and the like. The next set of tests was performed with varying conditions.
The above only is the partial embodiment of the utility model discloses a not therefore restriction the utility model discloses a protection scope, all utilize the utility model discloses equivalent device or equivalent flow transform that the content of description and drawing was done, or direct or indirect application in other relevant technical field, all the same reason is included in the patent protection scope of the utility model.
Claims (9)
1. The utility model provides a test model device is built altogether to a plurality of tunnels which characterized in that, it includes:
the test framework is of a box-type framework structure, and a test simulation area is formed in the box-type framework structure;
the rock-soil body is arranged in the test frame, one end of the rock-soil body faces the other end of the test frame;
the pressure applying assemblies are in multiple groups and respectively correspond to the horizontal two sides and the upper end surface of the rock-soil body, one end of each pressure applying assembly is abutted against the surface of the rock-soil body, and the other end of each pressure applying assembly is fixedly connected with the test frame to fix the rock-soil body in the test frame;
the drilling machine is arranged between the rock-soil body and the other end of the test frame and is provided with a drill bit, and the drill bit faces one end face of the rock-soil body;
the moving mechanism is arranged at the upper end of the test frame and is connected with the drilling machine through a connecting piece, so that the drilling machine is suspended in the test frame, and the moving mechanism assists in moving the drilling machine;
the camera shooting units are arranged at the other end of the test frame in an array mode, and the image shooting ends of the camera shooting units face to one end face of the rock-soil body.
2. The multiple tunnel co-construction test model apparatus of claim 1, wherein the pressure application assembly comprises:
the steel panels are in one-to-one correspondence with the upper end surface and the horizontal two sides of the rock-soil body and are fixedly arranged on the side surface of the test frame opposite to the upper end surface or the horizontal two sides of the rock-soil body;
the top supporting unit is a plurality of groups and each group of top supporting unit corresponds to one steel panel, the top supporting unit comprises a plurality of hydraulic oil cylinders distributed in an array mode, the main bodies of the hydraulic oil cylinders are fixed on the steel panels, piston rods of the hydraulic oil cylinders are abutted to rock-soil bodies, and the rock-soil bodies are fixed in the test frame.
3. The multi-tunnel co-construction test model device as claimed in claim 1, wherein the moving mechanism comprises a translation assembly and a lifting assembly, the translation assembly is arranged on the test frame above the drilling machine, the lifting assembly is connected with the translation assembly, the drilling machine is connected with the lifting assembly through a connecting piece, the lifting assembly and the drilling machine are driven by the translation assembly to translate between the rock-soil body and the other end of the test frame, and the drilling machine is driven by the lifting assembly to lift.
4. A multiple tunnel co-construction test model apparatus according to claim 3, wherein the connecting member is a universal rotating shaft.
5. A multi-tunnel co-construction test model apparatus according to claim 1, wherein the camera unit is a plurality of variable focus cameras arranged in an array at the other end of the test frame, and the test frame is fixedly connected with the camera unit through a clamping assembly.
6. The multiple tunnel co-construction test model apparatus of claim 5, wherein the clamping assembly comprises:
the first mounting plates are arranged oppositely and are provided with waist-shaped grooves extending to two ends in the length direction;
the second mounting plates are arranged in parallel, and two ends of each second mounting plate are detachably locked and fixed on the pair of first mounting plates through locking bolts and nuts;
and the clamping units are in sliding connection with the second mounting plate, and correspond to the camera shooting units one to one and are connected in a clamping manner.
7. The multiple tunnel co-construction test model apparatus of claim 6, wherein the clamping unit comprises:
the first connecting plate is of a v-shaped structure 21274, and a first cushion is arranged at the lower side in the v-shaped structure 21274;
the screw rod end of the first bolt is threaded into the v-21274of the first connecting plate from the upper side of the first connecting plate;
the upper end face of the first clamping plate is in rotary connection with the tail end in the V-shaped structure through a rotary connecting piece and a first bolt penetrating into the V-shaped structure 21274of the first connecting plate, the lower end face of the first connecting plate is provided with a second soft cushion, and a clamping area for clamping the camera shooting unit is formed between the first soft cushion and the second soft cushion;
the second connecting plate is fixed on the side surface of the first connecting plate far away from the opening side of the first connecting plate, the second mounting plate is an Contraband-shaped plate which is a v-shaped 21274, the lower side of the shape is provided with a first sliding groove which is a v-shaped 21274, the upper side of the shape is provided with a second sliding groove, and the second connecting plate penetrates into a v-shaped 21274of the second mounting plate;
the screw end of the second bolt penetrates into the v-21274of the second mounting plate through the second sliding groove, is in threaded connection with the upper end face of the second connecting plate and slidably restrains the second connecting plate in the v-21274of the second mounting plate;
the second clamping plate is arranged between the second connecting plate and the lower side of the V-shaped structure of the second mounting plate;
one end of the pull rod penetrates into the v-21274of the second mounting plate through the first sliding groove, the pull rod is arranged in the shape structure and is fixedly connected with the second clamping plate, and the other end of the pull rod is exposed out of the second mounting plate;
and the spring is sleeved at the end part of the pull rod penetrating into the second mounting plate and is respectively propped against the second clamping plate and the second mounting plate, so that the second clamping plate is propped and restrained in the v-21274-shaped structure of the second mounting plate.
8. A multi-tunnel co-construction test model device as claimed in claim 7, wherein the upper end face of the second splint is further provided with a third soft cushion.
9. A multiple tunnel co-construction test model apparatus according to any one of claims 1 to 8, further comprising:
the pressure sensing units are pre-buried in the rock-soil body and used for sensing the internal pressure change of the rock-soil body when the rock-soil body is excavated by the drilling machine,
the displacement meters are arranged on the surface of the rock-soil body and used for sensing the displacement distance of the rock-soil body excavated by the drilling machine.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114459789A (en) * | 2022-01-30 | 2022-05-10 | 福建工程学院 | Multi-tunnel co-construction test model device and test method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114459789A (en) * | 2022-01-30 | 2022-05-10 | 福建工程学院 | Multi-tunnel co-construction test model device and test method |
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