CN210533735U - Stable simulation system of gas drainage regulation and control tunnel excavation face - Google Patents
Stable simulation system of gas drainage regulation and control tunnel excavation face Download PDFInfo
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- CN210533735U CN210533735U CN201922016054.8U CN201922016054U CN210533735U CN 210533735 U CN210533735 U CN 210533735U CN 201922016054 U CN201922016054 U CN 201922016054U CN 210533735 U CN210533735 U CN 210533735U
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Abstract
The utility model discloses a stable simulation system of gas drainage regulation and control tunnel excavation face, including mold box, treater and supporting construction, the axial up end of supporting construction is the tunnel excavation face, is equipped with the foil gage around the tunnel excavation face; a tunnel excavation opening is formed in the front side wall of the model box; a soil pressure box is arranged on the outer surface of the supporting structure, a displacement sensor is arranged in the model box, and the gas pressure pump is connected with the gas vent valve through a pipeline; the gas pressure pump is used for drilling a drainage drill hole, and the gas drainage pump is connected with the drainage drill hole through pipelines which are provided with gas flow meters; the soil pressure box, the displacement sensor, the gas flowmeter and the strain gauge are respectively connected with the processor; adopt the utility model discloses, through simulation gas drainage construction operating mode to obtain the morphological parameter of excavation face, provide effective suggestion for prevention tunnel excavation face unstability.
Description
Technical Field
The utility model relates to a gas tunnel construction model test technique specifically is stable analog system of regulation and control tunnel excavation face is put in gas drainage.
Background
With the rapid development of national traffic infrastructure, more and more engineering projects are being developed to encounter harmful gas, of which gas is a main one. The existence of high-concentration gas is easy to cause engineering accidents such as gas outburst, explosion, suffocation and the like, and directly threatens the safe operation of tunnel construction. At present, the main treatment mode for gas in a gas tunnel is drilling drainage.
The method comprises the steps of excavating a drill hole on an excavation surface of the gas tunnel, so that gas in surrounding rocks is discharged, stress redistribution nearby the excavation surface can be caused, the stable state of the excavation surface is further influenced, and collapse of the excavation surface can be caused in serious cases. Therefore, if the influence mechanism of gas drainage on the tunnel excavation surface can be mastered, corresponding protective measures can be taken to avoid the occurrence of disaster accidents such as tunnel collapse and the like. Meanwhile, the evolution rule of the influence of the gas tunnel drainage on the excavation surface is mastered, reliable technical guidance and data support can be provided for the gas tunnel construction, and great engineering significance is brought to similar gas tunnel drainage construction in the future.
In the construction of the gas tunnel at the present stage, most tunnels reduce the gas content in the surrounding rock of the tunnel by adopting a gas drainage construction method, but relevant parameters of the tunnel excavation surface during gas drainage are not measured, and the state of the tunnel excavation surface during gas drainage cannot be judged. Therefore, an indoor test simulation device is needed, the real state of the gas tunnel can be reduced to the maximum extent, the gas drainage construction working condition is simulated at the same time, the form parameters on the excavation face are measured, the influence mechanism of the gas drainage on the tunnel excavation face is obtained according to the measurement data, and reference is provided for disaster prevention and control of the gas tunnel.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome and to have now in gas tunnel construction, the gas drainage in-process can not effectual not enough of the form parameter on the measurement excavation face, the stable analog system of regulation and control tunnel excavation face is put to the gas drainage, this analog system is through simulating the gas drainage construction operating mode, thereby obtain the form parameter of excavation face, and then reach the parameter that needs according to data processing equipment, thereby reach the gas and take out the influence mechanism of putting the excavation face stability, and then provide technical service and theoretical support for similar gas tunnel engineering from now on, provide effective suggestion for prevention tunnel excavation face unstability.
The purpose of the utility model is mainly realized through the following technical scheme:
the simulation system for regulating and controlling the stability of the tunnel excavation surface through gas drainage comprises a model box, a processor and a supporting structure arranged in the model box, wherein the supporting structure is a solid structure, two axial end surfaces of the supporting structure are tunnel excavation surfaces, the tunnel excavation surfaces are in the shape of an arch at the upper half part and a rectangle at the lower half part; the tunnel excavation surface on one side is abutted against the front side wall of the model box, and a plurality of strain gauges are arranged around the tunnel excavation surface on the other side; a tunnel excavation opening penetrating through the front end face and the rear end face of the model box is formed in the position, corresponding to the tunnel excavation face, of the front side wall of the model box; the outer surface of the supporting structure is provided with a plurality of soil pressure boxes, the inner surface of the model box is provided with a plurality of displacement sensors, and the top of the model box is provided with a plurality of gas vent valves for communicating the inner space and the outer space of the model box; a gas drainage pump and a gas pressurizing pump are arranged outside the model box, rock-soil simulation materials are filled in the model box, and the gas pressurizing pump is connected with the gas vent valve through a pipeline; the gas drainage pump is used for drilling a drainage borehole on the tunnel excavation surface, and is connected with the drainage borehole through a pipeline, and gas flowmeters are arranged on the pipelines at the gas drainage pump and the gas pressure pump; soil pressure cell, displacement sensor, gas flowmeter and foil gage are connected with the treater respectively, wherein:
the soil pressure box is used for measuring the surface pressure change of the supporting structure in the simulation process and transmitting the surface pressure change to the processor;
the displacement sensor is used for measuring and simulating horizontal displacement data of the excavation surface of the front tunnel and the rear tunnel and deformation data of the supporting structure and transmitting the data to the processor;
the strain gauge is used for measuring the stress of the tunnel excavation surface in the simulation process and transmitting the stress to the processor;
the gas flowmeter is used for measuring gas flow data passing through the gas pressurizing pump and the gas drainage pump and transmitting the data to the processor;
the processor is connected with a display and used for receiving data transmitted by the soil pressure box, the displacement sensor, the gas flowmeter and the strain gauge and displaying the data through the display.
In the gas extraction process, the gas pressure in the surrounding rock is gradually reduced, so that the stress redistribution near the excavation surface is caused, the stable state of the tunnel excavation surface is further influenced, and the tunnel excavation surface is collapsed in serious cases. In the scheme, after rock-soil simulation materials are filled in a model box, the box sealing operation is carried out, a gas pressurizing pump is started to fill gas into the model box, meanwhile, pressure is applied to the model box from the outside of the model box, and after 12 hours, the gas pressurizing pump is closed; drilling a drainage borehole on a tunnel excavation surface, and then connecting a pipeline of a gas drainage pump with the drainage borehole for extracting gas in the model box; wherein, in the process of extracting the gas in the model box, the gas flow meter records the gas flow data; the soil pressure box measures the surface pressure change of the supporting structure; measuring horizontal displacement data and deformation of a supporting structure before and after tunnel excavation face simulation by using a displacement sensor; the strain gauge measures the stress of the tunnel excavation surface after simulation; and then, a display connected with the processor displays the measured value for workers to analyze, so that an influence mechanism of the gas drainage process on the excavation surface is obtained, and guidance suggestions are provided for similar engineering construction in the future.
Further, the gas drainage regulation and control tunnel excavation face stable simulation system is characterized in that a tunnel excavation opening is consistent with the tunnel excavation face in shape, and an auxiliary drilling device is arranged at the tunnel excavation opening; the shape of the auxiliary drilling device is consistent with that of the tunnel excavation opening, and a plurality of preset drill holes penetrating through the auxiliary drilling device are formed in the auxiliary drilling device. The utility model discloses a set up supplementary drilling equipment, before getting the drainage drilling, select the position that needs drilling on the drilling of predetermineeing on supplementary drilling equipment, then get drainage drilling at the selected drilling department of predetermineeing, so make the position of drilling more accurate, improve this experimental precision.
Further, the stable analog system of regulation and control tunnel excavation face is put in gas drainage, the mold box outer joint has the guide rail, tunnel excavation mouth department is located to the guide rail, supplementary drilling equipment locates on the spout of guide rail and can slide along the spout. Because need use different supplementary drilling equipment according to analogue test's difference, the utility model discloses a set up the guide rail, supplementary drilling equipment can be convenient slide on the spout of guide rail, make supplementary drilling equipment can get into along the tunnel excavation face, guarantee the direction unanimous all the time, the direction has the mistake when avoiding drilling.
Further, the stable analog system of regulation and control tunnel excavation face is put in gas drainage, supplementary drilling equipment bottom is equipped with the mounting panel, be equipped with the fixed orifices on the mounting panel, be equipped with the screw on the spout of guide rail. Because the supplementary drilling equipment removes easily when getting the drawing hole of putting, the utility model discloses a set up mounting panel and screw, when supplementary drilling equipment slided tunnel excavation face department, pass the fixed orifices through the bolt and then screw and fix supplementary drilling equipment on the guide rail in the screw, prevent supplementary drilling equipment's removal, guaranteed going on smoothly of drilling.
Further, the stable analog system of gas drainage regulation and control tunnel excavation face, mold box, pipeline and guide rail all adopt explosion-proof type material to make. Because gas belongs to combustible gas, explosion-proof type material can prevent to produce the spark, and the guide rail adopts explosion-proof type material to make, prevents to produce the spark and takes place dangerous accident because of the friction in the supplementary drilling equipment slip process, and mold box, pipeline adopt explosion-proof type material to make, even when gas and air contact reach the explosion limit, meet naked light and can not produce the detonation accident yet, have increased the security of device.
Further, the stable analog system of gas drainage regulation and control tunnel excavation face, the mold box is bilayer structure, and the mold box inlayer is equipped with a plurality of air vent. The utility model discloses a set up the air vent, in gas got into then got into the mold box from the air vent from the gas breather valve, the environment before the actual tunnel excavation of simulation improved this experimental precision.
Further, the stable analog system of regulation and control tunnel excavation face is put in gas drainage, the roof of mold box is portable, is equipped with sealed the pad between roof and the mold box lateral wall, and the mold box top is equipped with counterforce device, counterforce device includes counter-force pull rod and jack, the counter-force pull rod is fixed in outside the mold box, the jack is located on the counter-force pull rod, the telescopic link of jack offsets with the roof of mold box. The counterforce device is mainly used for providing pressure for the rock-soil simulation material in the model box after gas filling is finished, compacting the rock-soil simulation material in the model box, enabling the rock-soil simulation material to be close to the environment of a real tunnel excavation surface, and improving the test precision.
Further, the stable analog system of gas drainage regulation and control tunnel excavation face still includes a plurality of supporting racks, supporting construction passes through the supporting rack to be fixed in the model box.
To sum up, compared with the prior art, the utility model has the following beneficial effects:
1. the utility model discloses a simulation gas drainage construction operating mode to the morphological parameter that obtains the excavation face shows through the display, supplies the staff analysis, thereby reachs the gas and takes out and put the stable influence mechanism to the excavation face, and then for similar gas tunnel engineering from now on provides technical service and theoretical support, provides effective suggestion for prevention tunnel excavation face unstability.
2. The utility model discloses a set up the guide rail, supplementary drilling equipment can be convenient slide on the spout of guide rail, make supplementary drilling equipment can get into along the tunnel excavation face, guarantee that the direction is unanimous all the time, the direction has the mistake when avoiding drilling.
3. The utility model discloses a set up counterforce device, after gas filling, provide pressure to the ground analog material of mold box, with the ground analog material compaction of mold box in, make it be close with the environment of true tunnel excavation face, improve this experimental precision.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
fig. 3 is a schematic structural diagram of an auxiliary drilling device.
Reference numbers and corresponding part names in the drawings:
1-model box, 2-supporting structure, 3-tunnel excavation surface, 4-tunnel excavation opening, 5-auxiliary drilling device, 6-preset drilling hole 7-gas pressure pump, 8-gas drainage pump, 9-gas vent valve, 10-soil pressure box, 11-displacement sensor, 12-strain gauge, 13-gas flowmeter, 14-supporting frame, 15-guide rail supporting plate, 16-jack, 17-counter force pull rod, 18-vent hole, 19-guide rail, 20-mounting plate and 21-screw hole.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example 1:
as shown in fig. 1 to 3, the simulation system for stabilizing the tunnel excavation surface through gas drainage regulation comprises a model box 1, a processor and a supporting structure 2 arranged in the model box 1, wherein the supporting structure 2 is a solid structure, two axial end surfaces of the supporting structure 2 are tunnel excavation surfaces 3, the tunnel excavation surfaces 3 are arched at the upper half part and rectangular at the lower half part; the tunnel excavation face 3 on one side is abutted against the front side wall of the model box 1, and a plurality of strain gauges 12 are arranged around the tunnel excavation face 3 on the other side. The supporting structure 2 of the embodiment is formed by pouring a lining model in the model box 1, the supporting structure 2 is a solid structure and is formed by cooling and hardening after being poured by concrete materials, and the supporting structure 2 formed by pouring in the way has good air tightness and reduces the leakage of gas; the lining model can be disassembled, the supporting structure 2 is disassembled after being formed, and the formed supporting structure 2 is provided with a supporting frame 14 at four positions at the bottom respectively for fixing the supporting structure 2. The model box 1 of the embodiment is of a double-layer structure, the periphery of the outer layer of the model box 1 and the bottom plate of the outer layer of the model box are fixedly arranged, all joints outside the model box 1 are arranged in a sealing mode, and the inner layer of the model box 1 is provided with a plurality of vent holes 18. The diameter of the vent hole 18 of the embodiment is smaller than the diameter of the particles of the rock-soil simulation material, so that the rock-soil simulation material is prevented from entering the vent hole 18, gas is prevented from entering the rock-soil simulation material, and the gas is ensured to smoothly enter the rock-soil simulation material.
The front side wall of the model box 1 of the embodiment is provided with a tunnel excavation port 4 penetrating through the side wall thereof at a position corresponding to the tunnel excavation surface 3. The tunnel excavation mouth 4 with 3 shapes unanimous in the tunnel excavation face, tunnel excavation mouth 4 department is equipped with supplementary drilling equipment 5. The outer of the model box 1 is connected with a guide rail 19, the guide rail 19 is arranged at the tunnel excavation port 4, the guide rail 19 is fixed through a guide rail support plate 15, and the auxiliary drilling device 5 is arranged on a sliding groove of the guide rail 19 and can slide along the sliding groove. The guide rail 19 of the present embodiment is perpendicular to the tunnel excavation surface 3 and is disposed at the center of the tunnel excavation surface 3. The shape of the auxiliary drilling device 5 is consistent with that of the tunnel excavation port 4, and a plurality of preset drill holes 6 penetrating through the auxiliary drilling device 5 are formed in the auxiliary drilling device 5.
The supporting structure 2 surface of this embodiment is equipped with a plurality of soil pressure cell 10, 1 internal surface of model case is equipped with a plurality of displacement sensor 11, and 1 top of model case is equipped with the gas breather valve 9 of a plurality of intercommunication model case 1 inner space and exterior space, is equipped with sealed the pad between roof and the model case 1 lateral wall. The model case 1 is equipped with gas drainage pump 8 and gas force (forcing) pump 7 outward, and the model case 1 intussuseption is filled with ground simulation material, gas force (forcing) pump 7 pass through the pipeline with gas vent valve 9 is connected. The gas drainage pump 8 is used for drilling out the drainage drilling hole on the tunnel excavation face 3 after, the gas drainage pump 8 is connected with the drainage drilling hole through the pipeline, and the gas flowmeter 13 is arranged on the pipeline at the gas drainage pump 8 and the gas pressure pump 7. Preferably, the displacement sensor 11 of the present embodiment is disposed in the mold box 1 so as to face the side surface of the supporting structure 2 and the tunnel excavation surface 3. The soil pressure cell 10, the displacement sensor 11, the gas flowmeter 13 and the strain gauge 12 of the present embodiment are respectively connected to a processor, wherein:
the soil pressure box 10 is used for measuring the pressure change of the surface of the supporting structure in the simulation process and transmitting the pressure change to the processor; the soil pressure cell 10 of the embodiment adopts an SZZX-EXX series string type soil pressure cell, which is widely applied to the pressure measurement of foundations and other soil pressures and water pressures in engineering fields such as buildings, railways, traffic, hydropower, dams, tunnels and the like, and can accurately measure the pressure state of a measured point.
The displacement sensor 11 is used for measuring horizontal displacement data of the tunnel excavation face 3 before and after simulation and deformation data of the supporting structure, and transmitting the data to the processor; the displacement sensor 11 is a reinforced seal type displacement sensor using MTL 5.
The gas flowmeter 13 is used for measuring gas flow data passing through the gas pressurizing pump 7 and the gas drainage pump 8 and transmitting the data to the processor; the gas flow meter 13 is a conventional device, and will not be described in detail herein.
The strain gauge 12 is used for measuring the stress of the tunnel excavation surface 3 in the simulation process and transmitting the stress to the processor; the strain gage 12 of the embodiment adopts a KFG-1-120-D17-11L2M2S resistance sensing strain gage.
The processor is connected with a display and is used for receiving data transmitted by the soil pressure box 10, the displacement sensor 11, the gas flowmeter 13 and the strain gauge 12 and displaying the data through the display, so that an influence mechanism on the tunnel excavation face 3 in the gas drainage process is obtained. The processor of this embodiment may be implemented by a computer or other dedicated intelligent device.
Example 2:
this example is further defined on the basis of example 1: the bottom of the auxiliary drilling device 5 in this embodiment is provided with a mounting plate 20, the mounting plate 20 is provided with a fixing hole, and the sliding groove of the guide rail 19 is provided with a screw hole 21. When the auxiliary drilling device 5 slides to the tunnel excavation face 3, the auxiliary drilling device is fixed on the guide rail 19 by the bolts penetrating through the fixing holes and then being screwed in the screw holes 21, so that the auxiliary drilling device 5 is prevented from moving, and smooth drilling is ensured. Preferably, the mold box 1, the pipe and the guide rail 19 are made of explosion-proof materials. Because the gas belongs to combustible gas, explosion-proof type material can prevent to produce the spark, and guide rail 19 adopts explosion-proof type material to make, prevents to produce the spark and take place dangerous accident because of the friction in the auxiliary drilling device 5 slip process, and model case 1, pipeline adopt explosion-proof type material to make, even when gas and air contact reach the explosion limit, meet open flame and can not produce the detonation accident, have increased the security of device. Preferably, the material of the explosion-proof material of the embodiment is an aluminum alloy material.
In this embodiment, the top plate of the model box 1 is movable, the top of the model box 1 is provided with a reaction device, the reaction device comprises a reaction pull rod 17 and a jack 16, the reaction pull rod 17 is fixed outside the model box 1, the reaction pull rod 17 is higher than the top of the model box 1, the jack 16 is arranged on the reaction pull rod 17, and the telescopic rod of the jack 16 is abutted against the top plate of the model box 1. The counterforce device is mainly used for providing pressure for the rock-soil simulation material in the model box 1 after gas filling is finished, compacting the rock-soil simulation material in the model box 1, enabling the rock-soil simulation material to be close to the environment of the real tunnel excavation face 3, and improving the test precision. Preferably, in order to ensure that the sealing performance of the top plate is good in the compaction process of the rock-soil simulation material, a plurality of layers of plastic films are paved in the rock-soil simulation material at the top of the model box 1 close to the top plate to prevent gas from moving upwards, so that the gas is prevented from leaking at the top plate, and meanwhile, the sealing gel material is smeared at the contact gap between the top plate and the model box 1 to ensure that the gas cannot leak.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. Stable analog system of regulation and control tunnel excavation face is put in gas drainage, its characterized in that: the tunnel excavation device comprises a model box (1), a processor and a supporting structure (2) arranged in the model box (1), wherein the supporting structure (2) is of a solid structure, two axial end surfaces of the supporting structure (2) are tunnel excavation surfaces (3), the upper half part of each tunnel excavation surface (3) is arched, and the lower half part of each tunnel excavation surface is rectangular; the tunnel excavation face (3) on one side is abutted against the front side wall of the model box (1), and a plurality of strain gauges (12) are arranged around the tunnel excavation face (3) on the other side; a tunnel excavation opening (4) penetrating through the front end face and the rear end face of the model box (1) is formed in the front side wall of the model box (1) and corresponds to the tunnel excavation face (3); the outer surface of the supporting structure (2) is provided with a plurality of soil pressure boxes (10), the inner surface of the model box (1) is provided with a plurality of displacement sensors (11), and the top of the model box (1) is provided with a plurality of gas vent valves (9) which are communicated with the inner space and the outer space of the model box (1); a gas drainage pump (8) and a gas pressure pump (7) are arranged outside the model box (1), rock-soil simulation materials are filled in the model box (1), and the gas pressure pump (7) is connected with the gas vent valve (9) through a pipeline; the gas drainage pump (8) is used for drilling a drainage borehole on the tunnel excavation surface (3), the gas drainage pump (8) is connected with the drainage borehole through a pipeline, and gas flow meters (13) are arranged on the pipelines at the gas drainage pump (8) and the gas pressure pump (7); soil pressure cell (10), displacement sensor (11), gas flowmeter (13) and foil gage (12) are connected with the treater respectively, wherein:
the soil pressure box (10) is used for measuring the surface pressure change of the supporting structure in the simulation process and transmitting the surface pressure change to the processor;
the displacement sensor (11) is used for measuring horizontal displacement data of the tunnel excavation face (3) before and after simulation and deformation data of the supporting structure, and transmitting the data to the processor;
the strain gauge (12) is used for measuring the stress of the tunnel excavation surface (3) in the simulation process and transmitting the stress to the processor;
the gas flowmeter (13) is used for measuring gas flow data passing through the gas pressurizing pump (7) and the gas drainage pump (8) and transmitting the data to the processor;
the processor is connected with a display and is used for receiving data transmitted by the soil pressure box (10), the displacement sensor (11), the gas flowmeter (13) and the strain gauge (12) and displaying the data through the display.
2. The system for simulating the stability of the excavation face of the gas drainage regulation tunnel according to claim 1, wherein: the tunnel excavation port (4) is consistent with the tunnel excavation surface (3) in shape, and an auxiliary drilling device (5) is arranged at the tunnel excavation port (4); the shape of the auxiliary drilling device (5) is consistent with that of the tunnel excavation opening (4), and a plurality of preset drill holes (6) penetrating through the auxiliary drilling device (5) are formed in the auxiliary drilling device (5).
3. The simulation system for stabilizing the excavation face of the gas drainage regulation tunnel according to claim 2, wherein: the tunnel drilling device is characterized in that a guide rail (19) is connected to the outside of the model box (1), the guide rail (19) is arranged at the tunnel excavation port (4), and the auxiliary drilling device (5) is arranged on a sliding groove of the guide rail (19) and can slide along the sliding groove.
4. The simulation system for stabilizing the excavation face of the gas drainage regulation tunnel according to claim 3, wherein: the auxiliary drilling device is characterized in that a mounting plate (20) is arranged at the bottom of the auxiliary drilling device (5), fixing holes are formed in the mounting plate (20), and screw holes (21) are formed in sliding grooves of the guide rails (19).
5. The simulation system for stabilizing the excavation face of the gas drainage regulation tunnel according to claim 3, wherein: the model box (1), the pipeline and the guide rail (19) are all made of explosion-proof materials.
6. The system for simulating the stability of the excavation face of the gas drainage regulation tunnel according to claim 1, wherein: the model box (1) is of a double-layer structure, and a plurality of vent holes (18) are formed in the inner layer of the model box (1).
7. The system for simulating the stability of the excavation face of the gas drainage regulation tunnel according to claim 6, wherein: the roof of model case (1) is portable, is equipped with sealed the pad between roof and model case (1) lateral wall, and model case (1) top is equipped with reaction device, reaction device includes reaction pull rod (17) and jack (16), reaction pull rod (17) are fixed in outside model case (1), on reaction pull rod (17) were located in jack (16), the telescopic link of jack (16) offsets with the roof of model case (1).
8. The system for simulating the stability of the excavation face of the gas drainage regulation tunnel according to claim 1, wherein: the supporting structure is characterized by further comprising a plurality of supporting frames (14), and the supporting structure (2) is fixed in the model box (1) through the supporting frames (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922016054.8U CN210533735U (en) | 2019-11-21 | 2019-11-21 | Stable simulation system of gas drainage regulation and control tunnel excavation face |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922016054.8U CN210533735U (en) | 2019-11-21 | 2019-11-21 | Stable simulation system of gas drainage regulation and control tunnel excavation face |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686918A (en) * | 2019-11-21 | 2020-01-14 | 西南石油大学 | Simulation system and experiment method for stability of tunnel excavation surface through gas drainage regulation and control |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110686918A (en) * | 2019-11-21 | 2020-01-14 | 西南石油大学 | Simulation system and experiment method for stability of tunnel excavation surface through gas drainage regulation and control |
| CN110686918B (en) * | 2019-11-21 | 2024-03-22 | 西南石油大学 | Simulation system and experimental method for stabilizing excavation surface of gas drainage control tunnel |
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