CN115436179A - Coal mine tunnel fault slippage type rock burst simulation test system - Google Patents

Coal mine tunnel fault slippage type rock burst simulation test system Download PDF

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Publication number
CN115436179A
CN115436179A CN202210906424.9A CN202210906424A CN115436179A CN 115436179 A CN115436179 A CN 115436179A CN 202210906424 A CN202210906424 A CN 202210906424A CN 115436179 A CN115436179 A CN 115436179A
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fault
slippage
loading
rock burst
coal mine
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康红普
王�琦
高富强
章冲
娄金福
柏建彪
王晓卿
高红科
马玉琨
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China University of Mining and Technology Beijing CUMTB
Tiandi Science and Technology Co Ltd
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China University of Mining and Technology Beijing CUMTB
Tiandi Science and Technology Co Ltd
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Priority to CN202210906424.9A priority Critical patent/CN115436179A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G01N3/12Pressure testing
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B25/00Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes

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  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The invention belongs to the field of coal mine model tests, provides a coal mine tunnel fault slippage type rock burst simulation test system, and solves the problem that the existing model test equipment cannot meet fault slippage type rock burst simulation. The system can realize real simulation of fault slippage type rock burst and accurate capture of precursor information through a gas-liquid composite loading device, a superposition loading device, a fault locking device, a fault activation actuating device, a double-layer mechanical friction reducing device and a three-dimensional fault slippage monitoring device. The technical scheme is as follows: applying stresses of the model body in different directions to promote the upper disc joint and the lower disc joint to slide on the fault, judging whether the fault slides according to data monitored by the high-precision monitoring module, starting a fault activation actuating device if the fault does not slide, applying circulating dynamic load to the model body until the fault slides and the roadway generates rock burst. The invention provides a scientific instrument and a research platform for revealing the occurrence mechanism of coal mine tunnel fault slippage type rock burst and establishing a disaster early warning prevention and control system.

Description

Coal mine tunnel fault slippage type rock burst simulation test system
Technical Field
The invention belongs to the field of coal mine model tests, and particularly relates to a coal mine tunnel fault slippage type rock burst simulation test system.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
With the gradual exhaustion of shallow coal resources, deep mining is imperative. In the process of coal mining to the deep part, a fault is the most common geological structure, and when mining is carried out in a fault affected area, fault slippage is easily caused, so that a rock burst accident is caused, and the safe and efficient mining of a coal mine is seriously threatened.
The geomechanical model test is an effective means for researching the underground engineering disaster occurrence mechanism and control method. The process of rock burst caused by fault slippage is successfully reproduced through a model test, and the method has important significance for determining the occurrence mechanism of the disasters and preventing and controlling the occurrence of the rock burst accidents.
However, the existing model test equipment cannot meet the simulation of fault slippage type rock burst, and the following reasons mainly exist:
(1) Faults in the model body cannot be effectively activated, so that the faults slide.
(2) The simulation stress of the boundary of the model body is lower and can not meet the energy storage requirement.
(3) The monitoring of energy released in the process of fault slippage and impact cannot be completed.
(4) Transient stress compensation after impact cannot be satisfied.
Disclosure of Invention
In order to solve at least one technical problem in the background technology, the invention provides a coal mine tunnel fault slippage type rock burst simulation test system, which performs true triaxial model boundary energy storage and dynamic and static loading, multi-type fault instantaneous activation and slippage simulation, multi-parameter data parallel acquisition and real-time fusion through a boundary gas-liquid composite loading device, a fault activation actuating device, a fault locking device, a double-layer mechanical anti-friction device and a real-time monitoring and analyzing device, so that the true simulation and the accurate capture of precursor information of the fault slippage type rock burst are realized, a disaster early warning and prevention and control system is provided with scientific instruments and a research platform for revealing the occurrence mechanism of the coal mine tunnel fault slippage type rock burst.
In order to achieve the purpose, the invention adopts the following technical scheme:
the coal mine tunnel fault slippage type rock burst simulation test system comprises a model test device and a control cabinet, wherein the model test device comprises an impact loading module, a fault activation module and a high-precision monitoring module, the fault activation module comprises a fault activation actuating device and a fault locking device, the fault locking device comprises an upper disc joint, a lower disc joint and a locking joint, and the upper disc joint and the lower disc joint are connected through the locking joint;
the control cabinet is configured to: based on the setting of the ground stress in different directions, the impact loading module is controlled to apply the ground stress in different directions to promote the upper disc joint and the lower disc joint to be separated from the locking joint, whether the fault slips or not is judged according to data returned by the high-precision monitoring module, if the fault does not slip, the fault activation actuating device is started, the circulating dynamic load is applied to the top surface of the mould body, and the force of the fault activation actuating device is continuously superposed on the fault locking device until the fault slips.
As an implementation mode, the model test device further comprises a main body reaction module, the main body reaction module comprises a model body reaction device, the model body reaction device comprises a device main body, the device main body comprises four groups of stand columns with the same structure, each group of stand columns are formed by welding multiple layers of high-strength steel plates, the stand columns are fixedly connected through multiple groups of unit type rectangular reinforcing ribs, different rectangular reinforcing ribs are positioned through high-strength bolts and are spliced through key sheath sockets on the outer sides of the units.
As an implementation mode, the edge of the model body counterforce device is provided with a sliding friction reducing area, the sliding friction reducing area adopts a double-layer mechanical friction reducing device, and the double-layer mechanical friction reducing device is formed by superposing and combining two layers of steel rolling shafts transversely and longitudinally and is separated by friction reducing steel plates.
As an embodiment, the impact loading module comprises a gas-liquid combined loading device and a superposition loading device, wherein a hollow part enclosed by the gas-liquid combined loading device and the superposition loading device is used for placing a model body, and a fault locking device is prefabricated inside the model body.
As an embodiment, the gas-liquid composite loading device comprises a large rigid body frame, the large rigid body frame comprises a gas loading bin, an oil pressure loading bin and a pressure adapter, and the gas loading bin is separated from the oil pressure loading bin through the pressure adapter.
As an embodiment, the stacking loading device includes a first direction stacking loading device and a second direction stacking loading device, the first direction stacking loading device includes a plurality of serial full-scale cylinders, and the second direction stacking loading device includes a plurality of parallel cylinders.
As an embodiment, the high-precision monitoring module comprises a three-dimensional fault slippage monitoring device, a fault slippage energy sensing device, a roadway surrounding rock deformation monitoring device and a surrounding rock stress monitoring device;
the three-dimensional fault slippage monitoring device is arranged on the fault locking device and is used for acquiring the slippage speed, the slippage distance and the slippage inclination angle of the moving area;
the fault sliding energy sensing device is arranged in the model body and used for acquiring the sliding acceleration of the moving area and further calculating the sliding energy;
the roadway surrounding rock deformation monitoring device is arranged at the edge of a prefabricated roadway of the model body and is used for capturing deformation damage forms in surrounding rocks;
the surrounding rock stress monitoring device consists of an acoustic emission device and a stress wave monitoring device and is used for monitoring the internal damage condition and the stress condition of the surrounding rock.
As an implementation mode, the system further comprises an energy supply station, the control cabinet is connected with the energy supply station in parallel, the energy supply station is provided with a plurality of oil paths and a plurality of gas paths, and the control cabinet is used for supplying energy to the designated oil paths or gas paths of the energy supply station.
In one embodiment, the energy supply station comprises a high-pressure oil cylinder and a high-pressure air cylinder, and the high-pressure oil cylinder is used for supplying the hydraulic oil to the oil pressure loading bin through a high-pressure oil path and supplying high-pressure air to the gas loading bin through the high-pressure air cylinder.
The scheme has the advantages that the fault slippage type rock burst real simulation and the accurate capture of precursor information are realized, and scientific instruments and research platforms are provided for revealing the occurrence mechanism of the fault slippage type rock burst of the coal mine tunnel and establishing a disaster early warning prevention and control system.
The beneficial effects of the invention are:
the device can activate the preset fault in the model test, enable the preset fault to slide, and reproduce the process of rock burst in the roadway in the fault sliding process.
The invention can perform true triaxial model boundary energy storage and dynamic and static loading, multi-type fault instantaneous activation and slip simulation, multi-parameter data parallel acquisition and real-time fusion through a boundary gas-liquid composite loading device, a fault activation actuating device, a fault locking device, a double-layer mechanical friction reduction device and a real-time monitoring analysis device, realize true simulation and precursor information accurate capture of fault slip rock burst, and provide a scientific instrument and a research platform for revealing the generation mechanism of the coal mine tunnel fault slip rock burst and establishing a disaster early warning prevention and control system.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic diagram of the overall structure of a coal mine tunnel fault slippage type rock burst simulation test system;
FIG. 2 is a schematic view of the overall structure of the model testing apparatus according to the present invention;
FIG. 3 is a schematic structural diagram of the gas-liquid composite loading device of the present invention;
FIG. 4 is a schematic structural diagram of the fault locking apparatus of the present invention;
in the figure, 1-a model test device, 2-an operation table, 3-a control cabinet, 4-an energy supply station, 5-a model body counterforce device, 501-a high-strength steel plate, 502-a unit type rectangular reinforcing rib, 6-an upper suspension, 7-a gas-liquid composite loading device, 701-a large rigid body frame, 702-a gas loading bin, 703-an oil pressure loading bin, 704-a pressure regulator, 8-a superposition loading device, 801-a first direction superposition loading device, 802-a second direction superposition loading device, 9-a model body, 10-a fault locking device, 1011-a fault upper disc, 1012-a fault lower disc, 1013-an upper disc, 1014-a lower disc, 1015-a locking section and 11-a fault activation actuating device.
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, terms such as "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only terms of relationships determined for convenience in describing structural relationships of the components or elements of the present invention, and are not intended to refer to any components or elements of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either fixedly connected, integrally connected, or detachably connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.
As introduced by the background technology, the current fault sliding type geomechanical model test cannot effectively simulate the sliding process of the forward fault and the reverse fault; the servo control of the ground stress cannot effectively follow the fault slip process; the relevant physical parameters of the fault slippage can not be detected. Aiming at the problems, the invention provides a coal mine tunnel fault slippage type rock burst simulation test system and a test method.
As shown in fig. 1, the embodiment provides a coal mine tunnel fault slippage type rock burst simulation test system, which includes a model test device 1, an operation platform 2, a control cabinet 3 and an energy supply station 4;
as shown in fig. 2, the model test device 1 includes a main body reaction force module, an impact loading module, a fault activation module and a high-precision monitoring module;
the main body reaction force module comprises a model body reaction force device 5 and an upper suspension 6, wherein the upper suspension 6 is fixed at the top of the model body reaction force device 5 through a connecting plug-in and a high-strength bolt.
The model body reaction device 5 comprises a device main body, the device main body comprises four groups of upright columns 501 with the same structure, each group of upright columns is formed by welding multiple layers of high-strength steel plates 502, the upright columns 501 are fixedly connected through multiple groups of unit type rectangular reinforcing ribs 502, different rectangular reinforcing ribs 502 are positioned through high-strength bolts and are spliced through key sheath sockets on the outer sides of the units.
The edge of the model body counterforce device 5 is provided with a sliding friction reducing area, the sliding friction reducing area adopts a double-layer mechanical friction reducing device, and the double-layer mechanical friction reducing device is formed by transversely and longitudinally superposing two layers of steel rolling shafts and is separated by friction reducing steel plates.
The impact loading module comprises a gas-liquid composite loading device 7 and a superposition loading device 8, and a hollow part enclosed by the gas-liquid composite loading device 7 and the superposition loading device 8 is used for placing a mould body 9;
as shown in fig. 3, the gas-liquid composite loading device 7 includes a large rigid body frame 701, the large rigid body frame includes a gas loading bin 702, an oil pressure loading bin 703 and a pressure adapter 704, and the gas loading bin 702 is separated from the oil pressure loading bin 703 by the pressure adapter 704.
The boundary energy storage of the model body can be realized through the structure of the gas-liquid composite loading device 7.
The stacking and loading device 8 comprises a first direction stacking and loading device 801 and a second direction stacking and loading device 802, wherein the first direction stacking and loading device 801 comprises a plurality of series-connected full-scale oil cylinders, and the second direction stacking and loading device 802 comprises a plurality of parallel oil cylinders;
the gas-liquid composite loading device 7 is used for applying vertical (z-axis) ground stress to the model body; the first direction superposition loading device 801 and the second direction superposition loading device 802 are used for applying horizontal (x axis) and vertical (y axis) ground stress to the model body, so that three-dimensional ground stress can be applied to the model body according to a preset value through the gas-liquid composite loading device 7, the first direction superposition loading device 801 and the second direction superposition loading device 802.
The fault activation module comprises a fault locking device 10 and a fault activation actuating device 11. One end of the fault activation actuating device 11 is fixed on the upper suspension beam 6, and the other end of the fault activation actuating device is connected with the gas-liquid composite loading device 7.
As shown in fig. 4, the fault locking device 10 is installed inside the model body 9, the fault locking device 10 comprises a fault upper plate 1011, a fault lower plate 1012 and a locking joint 1015, the fault upper plate 1011 is provided with an upper plate joint 1013, the fault lower plate 1012 is provided with a lower plate joint 1014, and the upper plate joint 1013 and the lower plate joint 1014 are connected through the locking joint 1015 and are prefabricated in the model body in advance.
The high-precision monitoring module comprises a three-dimensional fault slippage monitoring device, a fault slippage energy sensing device, a roadway surrounding rock deformation monitoring device and a surrounding rock stress monitoring device;
the three-dimensional fault slippage monitoring device is arranged on the fault locking device 10 and used for monitoring fault slippage speed, slippage distance and slippage inclination angle.
The fault slippage energy sensing device is arranged in the model body and used for monitoring fault slippage acceleration and further calculating slippage energy.
The roadway surrounding rock deformation monitoring device is composed of a high-definition miniature capture probe, is arranged at the edge of a prefabricated roadway of a model body and is used for capturing and observing deformation damage forms in surrounding rocks.
The surrounding rock stress monitoring device consists of an acoustic emission device and a stress wave monitoring device and is used for monitoring the internal damage condition and the stress condition of the surrounding rock.
The control cabinet 3 is configured to: based on the setting of the ground stress in different directions, the impact loading module is controlled to apply the ground stress in different directions, the upper disc joint 903 and the lower disc joint 904 are enabled to be separated from the locking joint 905, whether the fault slips or not is judged according to data returned by the high-precision monitoring module, if the fault does not slip, the fault activation actuating device 11 is started, the circulating dynamic load is applied to the top surface of the mould body, and the force of the fault activation actuating device is continuously superposed on the fault locking device 10 until the fault slips.
The operation table 2 is used for manual control operation, data collection and timely braking in emergency;
switch board 3 and energy supply station 4 parallel connection reduce signal transmission distance, improve control accuracy.
The control cabinet 3 is divided into a plurality of control modes, and can realize the setting of oil pressure and air pressure values, the setting of the magnitude of the ground stress applied in different directions, the control of the application frequency of the actuating force of the fault activation actuating device and the control of the local pressurization frequency of different oil paths.
It should be noted that, in this embodiment, the oil pressure, the air pressure, the magnitude of the ground stress applied in different directions, and the like, can be set by a person skilled in the art according to specific working conditions, and are not described in detail herein.
The energy supply station 4 comprises a high-pressure oil cylinder and a high-pressure air cylinder, and is used for supplying hydraulic oil to the oil pressure loading bin 702 through a high-pressure oil way and supplying high-pressure air to the gas loading bin 701 through the high-pressure air cylinder.
The energy supply station has multichannel oil circuit and multichannel gas circuit, the controller is used for carrying out accurate energy supply to appointed oil circuit or the gas circuit at energy supply station.
The test principle of the coal mine tunnel fault slippage type rock burst simulation test system is as follows:
the method specifically comprises the following steps:
step 1: presetting the magnitude of ground stress applied in different directions;
step 2: applying ground stress in different directions according to a preset value to promote the upper disc joint and the lower disc joint to be separated from the locking joint;
the specific implementation process is as follows: controlling the gas-liquid composite loading device 7 to apply vertical (z-axis) ground stress to the model body; the first direction superposition loading device 801 and the second direction superposition loading device 802 are controlled to apply horizontal (x axis) and vertical (y axis) ground stress to the model body, so that three-dimensional ground stress can be applied to the model body according to the preset value through the gas-liquid composite loading device 7, the first direction superposition loading device 801 and the second direction superposition loading device 802.
And step 3: and judging whether the fault slides according to data returned by the high-precision monitoring module, if the fault does not slide, starting a fault activation actuating device, and applying a circulating dynamic load to the top surface of the mould body so that the force of the fault activation actuating device is continuously superposed on a fault locking device until the fault slides.
The specific implementation principle is as follows:
firstly, when the gas-liquid composite loading device 7 is controlled to apply the vertical ground stress to the model body according to a preset value, a certain amount of energy storage gas is filled in the gas loading bin, then hydraulic oil is added in the oil pressure loading bin, and the volume of the energy storage gas in the gas loading bin is compressed by continuously adding the hydraulic oil so as to realize energy storage and high stress application.
And then, applying the ground stress on the top of the model body through the oil pressure loading bin, and under the combined influence of large enough ground stress, excavation disturbance and the like, promoting the upper disc joint and the lower disc joint which are preset in the upper disc and the lower disc of the fault to be separated from the locking joint, so that the fault slides.
If the sliding effect is not obvious or sliding cannot occur, starting the fault activation actuator, and applying a circulating dynamic load to the top surface of the model body to enable the force of the fault activation actuator to be continuously superposed on the fault locking device until the fault slides.
After the sliding impact occurs, the top of the fault is separated from the loading device at the top along with the sliding of the fault, and the energy storage gas in the top gas loading bin is still in a compressed state at the moment.
When the fault slides or impacts, the fault sliding energy sensor in the model body moves in cooperation with the upper disc or the lower disc which slides.
The device can activate the preset fault in the model test, enable the preset fault to slide, and reproduce the process of rock burst in the roadway in the fault sliding process.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The coal mine tunnel fault slippage type rock burst simulation test system is characterized by comprising a model test device and a control cabinet, wherein the model test device comprises an impact loading module, a fault activation module and a high-precision monitoring module, the fault activation module comprises a fault activation actuating device and a fault locking device, the fault locking device comprises an upper disc joint, a lower disc joint and a locking joint, and the upper disc joint and the lower disc joint are connected through the locking joint;
the control cabinet is configured to: based on the setting of the ground stress in different directions, the impact loading module is controlled to apply the ground stress in different directions to promote the upper disc joint and the lower disc joint to be separated from the locking joint, whether the fault slips or not is judged according to data returned by the high-precision monitoring module, if the fault does not slip, the fault activation actuating device is started, the circulating dynamic load is applied to the top surface of the mould body, and the force of the fault activation actuating device is continuously superposed on the fault locking device until the fault slips.
2. The coal mine roadway fault slippage type rock burst simulation test system according to claim 1, characterized in that the model test device further comprises a main body reaction module, the main body reaction module comprises a model body reaction device, the model body reaction device comprises a device main body, the device main body comprises four groups of stand columns with the same structure, each group of stand columns are formed by welding multiple layers of high-strength steel plates, the stand columns are fixedly connected through multiple groups of unit type rectangular reinforcing ribs, different rectangular reinforcing ribs are positioned through high-strength bolts and are inserted through key sheath sockets on the outer sides of the units.
3. The coal mine roadway fault slippage type rock burst simulation test system according to claim 2, characterized in that a sliding friction reduction area is arranged at the edge of the model body counterforce device, the sliding friction reduction area adopts a double-layer mechanical friction reduction device, the double-layer mechanical friction reduction device is formed by superposing and combining a transverse layer steel roller and a longitudinal layer steel roller and is separated by friction reduction steel plates.
4. The coal mine roadway fault slippage type rock burst simulation test system according to claim 1, wherein the impact loading module comprises a gas-liquid composite loading device and a superposition loading device, a hollow part enclosed by the gas-liquid composite loading device and the superposition loading device is used for placing a model body, and a fault locking device is prefabricated in the model body.
5. The coal mine roadway fault slippage type rock burst simulation test system of claim 4, wherein the gas-liquid composite loading device comprises a large rigid body frame, the large rigid body frame comprises a gas loading bin, an oil pressure loading bin and a pressure adapter, and the gas loading bin is separated from the oil pressure loading bin through the pressure adapter.
6. The coal mine roadway fault slippage type rock burst simulation test system according to claim 4, wherein the stacking loading device comprises a first direction stacking loading device and a second direction stacking loading device, the first direction stacking loading device comprises a plurality of foot cylinders connected in series, and the second direction stacking loading device comprises a plurality of parallel cylinders.
7. The coal mine tunnel fault slippage type rock burst simulation test system according to claim 4, wherein the high-precision monitoring module comprises a three-dimensional fault slippage monitoring device, a fault slippage energy sensing device, a tunnel surrounding rock deformation monitoring device and a surrounding rock stress monitoring device;
the three-dimensional fault slippage monitoring device is arranged on the fault locking device and is used for acquiring the slippage speed, the slippage distance and the slippage inclination angle of the moving area;
the fault sliding energy sensing device is arranged in the model body and used for acquiring the sliding acceleration of the moving area and further calculating the sliding energy;
the roadway surrounding rock deformation monitoring device is arranged at the edge of a prefabricated roadway of the model body and is used for capturing deformation damage forms in surrounding rocks;
the surrounding rock stress monitoring device consists of an acoustic emission device and a stress wave monitoring device and is used for monitoring the internal damage condition and the stress condition of the surrounding rock.
8. The coal mine tunnel fault slippage type rock burst simulation test system of claim 1, characterized in that, the system further comprises an energy supply station, the switch board is connected with the energy supply station in parallel, the energy supply station has multichannel oil circuit and multichannel gas circuit, the switch board is used for supplying energy to appointed oil circuit or gas circuit of energy supply station.
9. The coal mine roadway fault slippage type rock burst simulation test system of claim 8, wherein the energy supply station comprises a high-pressure oil cylinder and a high-pressure air cylinder, and is used for supplying hydraulic oil to the oil pressure loading bin through a high-pressure oil way and supplying high-pressure air to the gas loading bin through the high-pressure air cylinder.
CN202210906424.9A 2022-07-29 2022-07-29 Coal mine tunnel fault slippage type rock burst simulation test system Pending CN115436179A (en)

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CN202210906424.9A CN115436179A (en) 2022-07-29 2022-07-29 Coal mine tunnel fault slippage type rock burst simulation test system

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116577220A (en) * 2023-07-13 2023-08-11 中煤科工集团武汉设计研究院有限公司 Test equipment for rock burst simulation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116577220A (en) * 2023-07-13 2023-08-11 中煤科工集团武汉设计研究院有限公司 Test equipment for rock burst simulation
CN116577220B (en) * 2023-07-13 2023-12-12 中煤科工集团武汉设计研究院有限公司 Test equipment for rock burst simulation

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