CN116008084A - Main body model for multi-field coupling coal rock mass dynamic disaster prevention and control simulation test - Google Patents
Main body model for multi-field coupling coal rock mass dynamic disaster prevention and control simulation test Download PDFInfo
- Publication number
- CN116008084A CN116008084A CN202211669488.8A CN202211669488A CN116008084A CN 116008084 A CN116008084 A CN 116008084A CN 202211669488 A CN202211669488 A CN 202211669488A CN 116008084 A CN116008084 A CN 116008084A
- Authority
- CN
- China
- Prior art keywords
- cushion block
- test piece
- pressure
- main body
- end cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses a main body model for a multi-field coupling coal rock mass dynamic disaster prevention and control simulation test, which comprises a main body high-pressure cavity module and a test piece box module, wherein the outer shell of the main body high-pressure cavity module adopts a high-pressure closed pressure bin structure of an outer circle and an inner circle surrounded by a circular ring, a left circular end cover and a right circular end cover combined bolt, a front cushion block, a rear cushion block, an upper cushion block and a lower cushion block are respectively arranged on the front, the rear, the upper cushion block and the lower cushion block on the inner wall of the circular ring, the front cushion block, the rear cushion block, the upper cushion block and the lower cushion block are surrounded into a rectangular cavity for the test piece box module to be put in, a row of lifters are arranged at the left and the right of the top of the lower cushion block at intervals, and can protrude out of the lower cushion block and sink into the lower cushion block; a plurality of heating pipes and temperature control probes are installed on the upper pressing plate, the front pressing plate, the bottom plate and the rear side plate through holes, and a plurality of ultrasonic probes are installed on the upper pressing plate, the front pressing plate, the left pressing plate, the bottom plate, the rear side plate and the right side plate through holes. The method has the advantages of stronger bearing capacity, better reliability and sealing performance, more convenient operation and capability of meeting the requirements of multi-field coupling coal-rock mass dynamic disaster prevention and control simulation tests.
Description
Technical Field
The invention belongs to the technical field of coal rock mass mechanical property test equipment, and particularly relates to a main body model for a multi-field coupling coal rock mass dynamic disaster prevention and control simulation test.
Background
Along with the long-term development of coal resources, the coal exploitation depth of China gradually develops to the deep part at the speed of 10-25 m per year, and compared with shallow part resources, the gas occurrence condition faced by deep part exploitation is more complex, the coal and gas outburst danger is gradually upgraded, and coal mine gas disasters become key problems for restricting the coal mine safety production of China for a long time, and cause great threat to the sustainable development of energy sources of China. Long-term practice and research show that realizing efficient extraction of deep coal seam gas is an important problem for guaranteeing safe production of coal enterprises in China, and yield increase modification of low-permeability gas reservoirs is a core technology and hot spot problem. Therefore, aiming at the characteristics of high ground stress, complex geological structure and low air permeability of the coalbed methane (coal mine gas) reservoir in China, the research of key technical equipment for efficient extraction of the coalbed methane (coal mine gas) reservoir with low air permeability is further enhanced, the basic theoretical research of the coal bed methane seepage mechanism and the like is deepened, and the heavy-point subject research of the deep low air permeability coal bed permeability increasing mechanism and the like is enhanced.
Along with the increase of the mining depth of the coal mine, the coal and gas outburst accidents frequently happen in recent years, the outburst intensity is higher and higher, the casualties are serious, and shadows are caused for coal production. The coal rock damage destruction characteristic and the coal and gas outburst research under the multi-field coupling effect are developed, so that the method has rich theoretical connotation and academic value for revealing the mechanical behavior of the coal rock and the mechanical mechanism of damage instability of the coal rock, perfecting and developing rock damage mechanics, fracture mechanics and the like, and has extremely rich scientific, technical and engineering significance for mineral engineering development. However, due to the complexity and difficulty of developing coal-rock multi-field coupling research, the work of the aspect is still preliminary and incomplete, and the existing research results are also far from engineering application. Therefore, research on the mechanism of coal and gas outburst disasters is also imperative.
The existing test device for simulating the coal mine dynamic disasters still has the following problems: (1) The adopted model has smaller size, and the development process of simulating dynamic disasters has certain space limitation and can not accurately simulate the scene; (2) the automation degree of the installation of the device is low; (3) the tightness of the device is not high, and the simulated gas pressure is not high; (4) The opening speed of the protruding opening baffle is slow or has a certain time delay, so that the time and the intensity of coal and gas protruding are influenced to a certain extent, and the actual simulation situation is still different from the actual underground coal and gas protruding; (5) The method can not simulate the local stress concentration belt and the pressure relief belt caused by mining activities in front of the working face; (6) The coal and rock parameters inside the protruding die are not collected enough, most of the conditions are that only the temperature and the gas pressure are collected, the collection point is single, and deep analysis and research on the stress and the temperature evolution rule inside the coal and rock before and after the coal mine dynamic disaster can not be carried out.
In order to further study the comprehensive action mechanism of mutual coupling of factors such as ground stress, gas and coal physical and mechanical properties in the coal and gas outburst process, the space-time evolution and distribution rule of gas flow and coal-rock mass fracture coupling are analyzed so as to disclose the coal and gas outburst mechanism in a deeper level, quantized support is provided for forming the coal and gas outburst mechanical evolution mechanism and predicting the basic theory of coal and gas outburst, and a multi-field coupling coal-rock mass dynamic disaster prevention and control technology simulation system is independently developed.
Disclosure of Invention
The invention aims to provide the main body model for the multi-field coupling coal-rock mass dynamic disaster prevention and control simulation test, which has stronger bearing capacity, better reliability and sealing performance and more convenient operation.
The technical scheme adopted by the invention is as follows: the main body model for the multi-field coupling coal rock mass dynamic disaster prevention and control simulation test comprises a main body high-pressure cavity module and a test piece box module, wherein the outer shell of the main body high-pressure cavity module adopts a high-pressure closed pressure bin structure of an outer circle and an inner circle surrounded by a circular ring, a left circular end cover and a right circular end cover through bolts, a front cushion block, a rear cushion block, an upper cushion block and a lower cushion block are respectively arranged on the front, the rear, the upper cushion block and the lower cushion block of the inner wall of the circular ring, a rectangular cavity is surrounded by the front cushion block, the rear cushion block, the upper cushion block and the lower cushion block and is just used for placing the test piece box module, an axial hydraulic cylinder is arranged on the left circular end cover in a penetrating manner, the right circular end cover is divided into a punching hole type, a seepage type and a protruding type, the middle part of the right circular end cover is respectively provided with a punching hole, a seepage type and a protruding interface in a penetrating manner, a wire harness pipeline leading-out hole is respectively arranged on the left circular end cover, a row of lifters are arranged at left and right circular end cover left and right side at left intervals, and a row of lifters can also sink into the lower cushion blocks;
the test piece box module is a rectangular test piece accommodating cavity formed by encircling a left side plate, a bottom plate, a top plate, a right side plate, a front side plate and a rear side plate through combining bolts, the rectangular test piece accommodating cavity is collinear with the axial lead of a high-pressure sealing pressure bin, a left pressure plate is arranged on the left side of the rectangular test piece accommodating cavity, a plurality of upper pressure plates are sequentially arranged on the top left and right sides of the rectangular test piece accommodating cavity, a plurality of front pressure plates are sequentially arranged on the front left and right sides of the rectangular test piece accommodating cavity, the axial hydraulic cylinder can penetrate through the left side plate to be connected with the left pressure plate, each upper pressure plate is connected with the top hydraulic cylinder through an upper cushion block penetrating through the upper side plate, which is arranged on the top plate, each front pressure plate is connected with the lateral hydraulic cylinder through a side cushion block penetrating through the front side plate, a plurality of heating pipes and temperature control probes are arranged on the upper pressure plate, the front pressure plate, the left pressure plate, the bottom plate, the rear side plate and the right side plate are provided with a plurality of ultrasonic probes, the bottom plate is arranged on the upper opening of the test piece box module, and a row of rollers are arranged on the bottom of the test piece box module at left and right sides at intervals through a liner plates;
the anti-channeling board is arranged right above the bottom plate and corresponds to the upper pressing plate one by one, a central air inlet hole and a plurality of annular grooves surrounding the central air inlet hole are formed in the anti-channeling board, all the annular grooves are communicated with the central air inlet hole through connecting grooves which are distributed in a divergent mode, an air inlet pipe transversely penetrates through the side wall of the test piece box module to be connected to the bottom of the central air inlet hole, a ventilation partition plate is arranged above the anti-channeling board, filter plates are arranged at the left end and the right end of a test piece, and sealing gaskets are arranged on the upper end, the lower end and the front end of the test piece.
As the preferable mode of the scheme, the inner cavity of the test piece box module can be provided with a rectangular test piece with the length of 1000 times the width of 400 times the height of 400mm, and the internal pressure of the main body high-pressure cavity module is 10MPa.
It is further preferred that only one of the axial hydraulic cylinders has a maximum loading pressure of 5000kN; four groups of top hydraulic cylinders and lateral hydraulic cylinders are respectively arranged, each group of hydraulic cylinders is provided with two parallel hydraulic loading systems for pressurizing, one of the hydraulic cylinders is a static load loading system, the other hydraulic cylinder is a dynamic load loading system, the maximum loading pressure of a single group of hydraulic loading devices is 3000kN, each group of hydraulic loading systems is used for independently controlling one pressing plate and is arranged on the corresponding pressing plate in a left-right centering mode, and the axial hydraulic cylinders, the top hydraulic cylinders and the lateral hydraulic cylinders can all carry out dynamic and static load loading.
It is further preferred that the annular grooves are rectangular or circular and are equally spaced apart.
The main body model for the multi-field coupling coal rock mass dynamic disaster prevention and control simulation test further comprises a main body frame for supporting the main body model, wherein the main body frame is of a rectangular frame structure, the left end and the right end of the main body model extend out of the main body frame, a transfer sliding rail is arranged on the right side of the main body frame and extends to the position right below a main body high-pressure cavity module, and the width of the transfer sliding rail is smaller than the inner space width of the main body frame; a test piece box lifting and conveying frame and a right round end cover conveying frame are slidably mounted on the transfer slide rail, and the test piece box lifting and conveying frame can perform lifting movement and is used for supporting the test piece box module; the top of the right round end cover transfer frame is arc-shaped and is used for supporting the right round end cover, the test piece box lifting transfer frame can enable the test piece box module to be pushed into the main body high-pressure cavity module horizontally after being lifted, the top of the test piece box lifting transfer frame is lower than the bottom of the main body high-pressure cavity module after being lowered, so that the test piece box lifting transfer frame can slide into the lower side of the main body high-pressure cavity module conveniently, and the right round end cover transfer frame can slide leftwards to a set position to install the right round end cover.
It is further preferred that each lifter adopts a double supporting structure which is arranged at intervals and symmetrically, each lifter adopts independent hydraulic drive, and all lifters synchronously lift.
Further preferably, a high-frequency vibrator is arranged on the cavity of the axial hydraulic cylinder, high-speed vibration is generated under the action of a high-pressure air source, and high-frequency vibration force can be transmitted to the test piece right through the corresponding hydraulic cavity, the hydraulic piston and the left pressing plate.
The invention has the beneficial effects that:
(1) The shell of the main body high-pressure cavity module adopts a high-pressure sealing pressure bin with an outer circle and an inner circle, wherein the outer circle and the inner circle are surrounded by a circular ring, a left circular end cover and a right circular end cover which are combined with bolts, and the structure of the high-pressure sealing pressure bin is quite different from that of the traditional pressure bin with an outer square and an inner square which are surrounded by six plates; meanwhile, the test piece box module is rectangular, so that the mounting of the test piece box module is met, the front cushion block, the rear cushion block, the upper cushion block and the lower cushion block which are special-shaped are creatively arranged on the front side, the rear side, the upper cushion block and the lower cushion block of the inner wall of the high-pressure closed pressure bin respectively, and a rectangular cavity which is just used for the test piece box module to be placed in is formed by the front cushion block, the rear cushion block, the upper cushion block and the lower cushion block, so that a test piece box module mounting environment with the inner side of an outer circle is formed, the internal pressure resistance is stronger, the sealing capability is better, the internal pressure resistance which can be provided is as high as 10MPa, and a better test environment is provided for a multi-field coupling coal rock dynamic disaster prevention and control simulation test;
(2) The right round end cover is provided with three types of punching holes, seepage patterns and protruding interfaces, the middle part of the right round end cover is respectively provided with the punching holes, the seepage patterns and the protruding interfaces in a penetrating way, and only a set of equipment can be used for respectively carrying out punching holes, seepage patterns and protruding tests by simply replacing the equipment, so that the functions are more, and the cost of the test equipment is greatly saved;
(3) The lifter is supported below the rollers, so that the test piece box module can be pushed in and pulled out more easily and laborsaving, the automation degree of installation is improved, and the large-scale simulation test operation is easier and laborsaving;
(4) The upper pressing plate, the front pressing plate, the bottom plate and the rear side plate are provided with a plurality of heating pipes and temperature control probes, and the upper pressing plate, the front pressing plate, the left pressing plate, the bottom plate, the rear side plate and the right side plate are provided with a plurality of ultrasonic probes, so that tests such as coal and gas outburst, coalbed methane migration, fracturing and permeability increase, hydraulic punching and the like under the three-dimensional stress-seepage-temperature multi-field coupling condition can be carried out; and combine the anti-channeling board that sets up directly over the bottom plate, ventilative baffle is installed to the top of anti-channeling board, installs the filter in the left and right sides both ends of test piece, installs sealed pad around the upper and lower of test piece, can prevent the channeling, can guarantee again that the gas permeability is good to possess and filter and seal multiple effect.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an interior left view of fig. 1.
Fig. 3 is a schematic structural view of the specimen box module.
Fig. 4 is an interior left view of fig. 3.
Fig. 5 is a simplified view of the arrangement of a heating tube, a temperature control probe, and an ultrasonic probe.
FIG. 6 is a simplified illustration of an anti-channeling plate.
Fig. 7 is a state before the specimen box module is loaded into the main body high-pressure chamber module.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1-2, a main body model for a multi-field coupling coal-rock mass dynamic disaster prevention and control simulation test mainly comprises a main body high-pressure cavity module and a test piece box module.
The shell 1 of the main body high-pressure cavity module is of a high-pressure closed pressure bin structure which is formed by combining an outer circle and an inner circle surrounded by bolts through a circular ring 3, a left circular end cover 4 and a right circular end cover 5. A front cushion block 2, a rear cushion block 9, an upper cushion block 10 and a lower cushion block 11 are respectively arranged on the front, the rear, the upper and the lower of the inner wall of the circular ring 3. The front cushion block 2, the rear cushion block 9, the upper cushion block 10 and the lower cushion block 11 enclose a rectangular cavity for the test piece box module to be placed in.
The left round end cover 4 is provided with an axial hydraulic cylinder 6 in a penetrating way, the right round end cover 5 is divided into three types of punching holes, seepage types and protruding types, and the middle part of the right round end cover 5 is provided with punching holes, seepage types and protruding connectors in a penetrating way respectively, namely: when the right round end cover 5 adopts a punching type, a punching interface is arranged in the middle of the right round end cover 5 in a penetrating manner and is used for punching test; when the right round end cover 5 adopts seepage type, the middle part of the right round end cover 5 is provided with a seepage interface in a penetrating way for seepage test; when the right round end cover 5 adopts a protruding type, a protruding interface is installed in the middle of the right round end cover 5 in a penetrating manner and used for a protruding test. Only the right circular end cover 5 needs to be replaced, and correspondingly, different interfaces are arranged on the right circular end cover 5, so that different tests can be carried out.
The left round end cover 4 and the right round end cover 5 are respectively penetrated with a wire harness pipeline leading-out hole 7, a row of lifters 8 are arranged at the top of the lower cushion block 11 at left and right intervals, and the lifters 8 can protrude out of the lower cushion block 11 and also can sink into the lower cushion block 11. Each lifter 8 adopts a double-wheel structure which is arranged at intervals front and back and symmetrically, realizes front and back double support, and has balanced and stable stress. Each lifter 8 is driven by a separate hydraulic pressure, and all lifters 8 are controlled to synchronously lift and lower through a control system.
Referring to fig. 1-4, the specimen box module is a rectangular specimen accommodating cavity surrounded by the left side plate 12, the bottom plate 13, the top plate 14, the right side plate 15, the front side plate 23 and the rear side plate 24 and combined with bolts, and the rectangular specimen accommodating cavity is collinear with the axial lead of the high-pressure closed pressure bin, so that the rectangular specimen is ensured to be arranged in the middle of the main body model. A left pressing plate 16 is arranged on the left side in the rectangular test piece accommodating cavity, a plurality of upper pressing plates 17 are arranged on the top left and right in sequence, and a plurality of front pressing plates 18 are arranged on the front left and right in sequence. The axial hydraulic cylinders 6 can penetrate through the left side plate 12 and are connected with the left pressing plate 16, each upper pressing plate 17 is connected with a top hydraulic cylinder 20 through an upper cushion block 19 penetrating through the top plate 14, the top hydraulic cylinder 20 is provided with a hydraulic piston 20a, the upper cushion block 19 is acted on through the hydraulic piston 20a, and then the upper pressing plate 17 applies load to the rectangular test piece. Each front platen 18 is connected to a lateral hydraulic cylinder 22 by a side block 21 mounted through a front side plate 23, the lateral hydraulic cylinder 22 also having a hydraulic piston, through which the side block 21 is acted upon by the hydraulic piston, and the rectangular test piece is loaded by the front platen 18.
As shown in fig. 1 to 5, a plurality of heating pipes 27 and temperature control probes 28 are installed on the openings of the upper pressing plate 17, the front pressing plate 18, the bottom plate 13 and the rear side plate 24, and a plurality of ultrasonic probes 29 are installed on the openings of the upper pressing plate 17, the front pressing plate 18, the left pressing plate 16, the bottom plate 13, the rear side plate 24 and the right side plate 15. A row of rollers 26 are mounted at left and right intervals on the bottom of the test piece box module through a lining plate 25, and when the test piece box module is pushed into the main body high-pressure cavity module, the lifter 8 is supported below the rollers 26.
Preferably, a high-frequency vibrator is arranged on the cavity of the axial hydraulic cylinder 6, high-speed vibration is generated under the action of a high-pressure air source, and high-frequency vibration force can be transmitted to the test piece right through the corresponding hydraulic cavity, the hydraulic piston and the left pressing plate 16.
The anti-channeling plates 30 corresponding to the upper pressing plates 17 one by one are arranged right above the bottom plate 13, and the anti-channeling plates 30 are provided with a central air inlet hole 30a and a plurality of annular grooves 30b surrounding the central air inlet hole 30a, and all the annular grooves 30b are communicated with the central air inlet hole 30a through communication grooves 30c which are distributed in a divergent mode, as shown in fig. 6. The annular grooves 30b are rectangular or circular and are equally spaced apart.
The air inlet pipe transversely passes through the side wall of the test piece box module and is connected to the bottom of the central air inlet hole 30a, the ventilation partition plate 31 is arranged above the anti-channeling plate 30, the filter plates 32 are arranged at the left end and the right end of the test piece, and the sealing gaskets 33 are arranged on the upper part, the lower part, the front part and the rear part of the test piece.
The inner cavity of the test piece box module can be provided with a rectangular test piece with the length of 1000 times the width of 400 times the height of 400mm, and the internal pressure resistance of the main body high-pressure cavity module is 10MPa. But are not limited to, this gauge size.
Only one axial hydraulic cylinder 6 has a maximum loading pressure of 5000kN; four groups of top hydraulic cylinders 20 and side hydraulic cylinders 22 are respectively arranged, each group of hydraulic cylinders is provided with two parallel hydraulic loading systems for pressurizing, one of the hydraulic cylinders is a static load loading system, the other hydraulic loading system is a dynamic load loading system, the maximum loading pressure of a single group of hydraulic loading devices is 3000kN, each group of hydraulic loading systems is used for independently controlling one pressing plate and is arranged on the corresponding pressing plate in a left-right centering mode, and the axial hydraulic cylinders 6, the top hydraulic cylinders 20 and the side hydraulic cylinders 22 can be used for loading dynamic and static loads.
As shown in fig. 7, the main body model includes a main body frame 37 for supporting the main body model, a transfer slide rail 36, a test piece box lifting and transporting frame 34, and a right round end cap transporting frame 35, in addition to the main body high-pressure chamber module and the test piece box module.
The main body frame 37 is used for supporting a main body model, the main body frame 37 is of a rectangular frame structure, and the left end and the right end of the main body model extend out of the main body frame 37. The right side of main part frame 37 is provided with and transports slide rail 36, and transport slide rail 36 extends to the main part high pressure chamber module under, and transport slide rail 36's width is less than the interior empty width of main part frame 37. The transfer slide rail 36 is slidably provided with a specimen box lifting and transferring frame 34 and a right round end cover transferring frame 35, and the specimen box lifting and transferring frame 34 can perform lifting and transferring movements and is used for supporting the specimen box module. The top of the right round end cover transferring frame 35 is arc-shaped and is used for supporting the right round end cover 5, the test piece box lifting transferring frame 34 just enables the test piece box module to be horizontally pushed into the main body high-pressure cavity module after being lifted, and the top of the test piece box lifting transferring frame 34 is lower than the bottom of the main body high-pressure cavity module after being lowered, so that the test piece box lifting transferring frame slides into the lower part of the main body high-pressure cavity module, and the right round end cover transferring frame 35 can slide leftwards to a set position to install the right round end cover 5.
Claims (7)
1. A main body model for a multi-field coupling coal rock mass dynamic disaster prevention and control simulation test is characterized in that: the high-pressure test device comprises a main body high-pressure cavity module and a test piece box module, wherein a shell (1) of the main body high-pressure cavity module adopts a high-pressure closed pressure bin structure of an outer circle surrounded by a circular ring (3), a left circular end cover (4) and a right circular end cover (5) through bolts, a front cushion block (2), a rear cushion block (9), an upper cushion block (10) and a lower cushion block (11) are respectively arranged on the front, rear, upper and lower surfaces of the inner wall of the circular ring (3), the front cushion block (2), the rear cushion block (9), the upper cushion block (10) and the lower cushion block (11) enclose a rectangular cavity for the test piece box module to be placed, an axial hydraulic cylinder (6) is arranged on the left circular end cover (4) in a penetrating manner, the middle part of the right circular end cover (5) is respectively provided with punching holes, seepage and protruding interfaces in a penetrating manner, a pipeline leading-out hole (7) is respectively arranged on the left circular end cover (4) and the right circular end cover (5), a lifter (8) is arranged on the top of the lower cushion block (11) at a left and right interval, and a wire harness (11) can be placed in the lower wire harness (11);
the test piece box module is a rectangular test piece accommodating cavity which is surrounded by a left side plate (12), a bottom plate (13), a top plate (14), a right side plate (15), a front side plate (23) and a rear side plate (24) through combining bolts, the rectangular test piece accommodating cavity is collinear with the axial lead of a high-pressure sealing pressure bin, a left pressure plate (16) is arranged on the left side in the rectangular test piece accommodating cavity, a plurality of upper pressure plates (17) and a plurality of front pressure plates (28) are arranged on the left and right sides of the top in sequence, a plurality of front pressure plates (6) are arranged on the left and right sides of the front part in sequence, the axial hydraulic cylinder (6) can penetrate through the left side plate (12) to be connected with the left pressure plate (16), each upper pressure plate (17) is connected with the top hydraulic cylinder (20) through an upper cushion block (19) penetrating through the top plate (14), each front pressure plate (18) is connected with a lateral hydraulic cylinder (22) through a side cushion block (21) penetrating the front side plate (23), a plurality of heating pipes (27) and temperature control probes (28) are arranged on the upper pressure plates (17), the front pressure plates (18), the bottom plates (13) and the rear pressure plates (24) are provided with a plurality of upper ultrasonic probes (29), a row of rollers (26) are arranged at the bottom of the test piece box module at left and right intervals through a lining plate (25), and when the test piece box module is pushed into the main body high-pressure cavity module, the lifter (8) is supported below the rollers (26);
just above bottom plate (13) be provided with upper pressure plate (17) one-to-one prevent channeling board (30), central inlet port (30 a) and a plurality of ring channel (30 b) around central inlet port (30 a) have been seted up on prevent channeling board (30), and all ring channel (30 b) and central inlet port (30 a) are through being the tie groove (30 c) intercommunication that divergently distributes, and the lateral wall of intake pipe transverse passing test piece case module inserts the bottom of central inlet port (30 a), ventilative baffle (31) are installed to the top of prevent channeling board (30), filter (32) are installed at the left and right sides of test piece, install sealing pad (33) around about the test piece.
2. The body model for a multi-field coupling coal rock mass dynamic disaster prevention and control simulation test according to claim 1, wherein: the inner cavity of the test piece box module can be provided with a rectangular test piece with the length of 1000 times the width of 400 times the height of 400mm, and the internal pressure resistance of the main body high-pressure cavity module is 10MPa.
3. The body model for a multi-field coupling coal rock mass dynamic disaster prevention and control simulation test according to claim 1, wherein: only one axial hydraulic cylinder (6) has a maximum loading pressure of 5000kN; four groups of top hydraulic cylinders (20) and lateral hydraulic cylinders (22) are respectively arranged, each group of hydraulic cylinders is provided with two parallel hydraulic loading systems for pressurizing, one hydraulic loading system is a static load loading system, the other hydraulic loading system is a dynamic load loading system, the maximum loading pressure of a single group of hydraulic loading devices is 3000kN, each group of hydraulic loading systems is used for independently controlling one pressing plate and is arranged on the corresponding pressing plate in a left-right centering mode, and the axial hydraulic cylinders (6), the top hydraulic cylinders (20) and the lateral hydraulic cylinders (22) can all carry out dynamic and static load loading.
4. The body model for a multi-field coupling coal rock mass dynamic disaster prevention and control simulation test according to claim 1, wherein: the annular grooves (30 b) are rectangular or circular and are distributed at equal intervals.
5. The body model for a multi-field coupling coal rock mass dynamic disaster prevention and control simulation test according to claim 1, wherein: the main body frame (37) is used for supporting the main body model, the main body frame (37) is of a rectangular frame structure, the left end and the right end of the main body model extend out of the main body frame (37), a transfer sliding rail (36) is arranged on the right side of the main body frame (37), the transfer sliding rail (36) extends to the position right below the main body high-pressure cavity module, and the width of the transfer sliding rail (36) is smaller than the inner space width of the main body frame (37); a test piece box lifting and transporting frame (34) and a right round end cover transporting frame (35) are slidably arranged on the transporting slide rail (36), and the test piece box lifting and transporting frame (34) can perform lifting movement and is used for supporting a test piece box module; the top of the right round end cover transferring frame (35) is arc-shaped and is used for supporting the right round end cover (5), the test piece box lifting transferring frame (34) can enable the test piece box module to be pushed into the main body high-pressure cavity module horizontally after being lifted, the top of the test piece box lifting transferring frame (34) is lower than the bottom of the main body high-pressure cavity module after being lowered, so that the test piece box lifting transferring frame can slide into the lower portion of the main body high-pressure cavity module conveniently, and the right round end cover transferring frame (35) can slide leftwards to a set position to install the right round end cover (5).
6. The body model for a multi-field coupling coal rock mass dynamic disaster prevention and control simulation test according to claim 1, wherein: each lifter (8) adopts a double-support structure which is arranged at intervals and symmetrically, each lifter (8) adopts independent hydraulic drive, and all lifters (8) synchronously lift.
7. The body model for a multi-field coupling coal rock mass dynamic disaster prevention and control simulation test according to claim 1, wherein: a high-frequency vibrator is arranged on a cavity of the axial hydraulic cylinder (6), high-speed vibration is generated under the action of a high-pressure air source, and high-frequency vibration force can be transmitted to a test piece rightward through a corresponding hydraulic cavity, a hydraulic piston and a left pressing plate (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211669488.8A CN116008084B (en) | 2022-12-23 | 2022-12-23 | Main body model for multi-field coupling coal rock mass dynamic disaster prevention and control simulation test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211669488.8A CN116008084B (en) | 2022-12-23 | 2022-12-23 | Main body model for multi-field coupling coal rock mass dynamic disaster prevention and control simulation test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116008084A true CN116008084A (en) | 2023-04-25 |
| CN116008084B CN116008084B (en) | 2023-08-22 |
Family
ID=86025996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211669488.8A Active CN116008084B (en) | 2022-12-23 | 2022-12-23 | Main body model for multi-field coupling coal rock mass dynamic disaster prevention and control simulation test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116008084B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621229A (en) * | 2012-03-27 | 2012-08-01 | 重庆大学 | Large simulation test piece box for multi field coupling coal mine dynamic disaster |
| CN102621231A (en) * | 2012-03-27 | 2012-08-01 | 重庆大学 | Large simulation test acoustic emission device for multi field coupling coal mine dynamic disaster |
| CN102621230A (en) * | 2012-03-27 | 2012-08-01 | 重庆大学 | Multi-field-coupled coal mine dynamic disaster large-scale simulation testing method |
| CN102621232A (en) * | 2012-03-27 | 2012-08-01 | 重庆大学 | Multi-field coupling large-sized simulation test system for coal mine dynamic disaster |
| CN106226502A (en) * | 2016-09-19 | 2016-12-14 | 山东大学 | Deep high-ground stress coal and rock dynamic disaster and displacement simulation pilot system and method |
| CN109900543A (en) * | 2019-04-09 | 2019-06-18 | 重庆大学 | The stress induced prominent simulation test device of two-dimensional combination |
| CN109991108A (en) * | 2019-04-09 | 2019-07-09 | 重庆大学 | Metallic framework reinforcing coal and gas outburst simulation test method under sound load action |
| CN110056335A (en) * | 2018-11-27 | 2019-07-26 | 安阳工学院 | Three axis multiple cracks hydraulic fracturing experiments devices of one kind and experimental method |
| CN111648818A (en) * | 2020-07-06 | 2020-09-11 | 西安科技大学 | Multifunctional physical simulation experiment device for gas extraction drilling and use method |
| CN113295552A (en) * | 2021-04-19 | 2021-08-24 | 东北大学 | High-temperature high-pressure true triaxial direct shear fracture seepage coupling test device and use method |
| CN114216785A (en) * | 2021-12-16 | 2022-03-22 | 中国矿业大学 | Multi-field multi-phase variable frequency fracturing test device for large-size true triaxial coal rock mass |
-
2022
- 2022-12-23 CN CN202211669488.8A patent/CN116008084B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102621229A (en) * | 2012-03-27 | 2012-08-01 | 重庆大学 | Large simulation test piece box for multi field coupling coal mine dynamic disaster |
| CN102621231A (en) * | 2012-03-27 | 2012-08-01 | 重庆大学 | Large simulation test acoustic emission device for multi field coupling coal mine dynamic disaster |
| CN102621230A (en) * | 2012-03-27 | 2012-08-01 | 重庆大学 | Multi-field-coupled coal mine dynamic disaster large-scale simulation testing method |
| CN102621232A (en) * | 2012-03-27 | 2012-08-01 | 重庆大学 | Multi-field coupling large-sized simulation test system for coal mine dynamic disaster |
| CN106226502A (en) * | 2016-09-19 | 2016-12-14 | 山东大学 | Deep high-ground stress coal and rock dynamic disaster and displacement simulation pilot system and method |
| CN110056335A (en) * | 2018-11-27 | 2019-07-26 | 安阳工学院 | Three axis multiple cracks hydraulic fracturing experiments devices of one kind and experimental method |
| CN109900543A (en) * | 2019-04-09 | 2019-06-18 | 重庆大学 | The stress induced prominent simulation test device of two-dimensional combination |
| CN109991108A (en) * | 2019-04-09 | 2019-07-09 | 重庆大学 | Metallic framework reinforcing coal and gas outburst simulation test method under sound load action |
| CN111648818A (en) * | 2020-07-06 | 2020-09-11 | 西安科技大学 | Multifunctional physical simulation experiment device for gas extraction drilling and use method |
| CN113295552A (en) * | 2021-04-19 | 2021-08-24 | 东北大学 | High-temperature high-pressure true triaxial direct shear fracture seepage coupling test device and use method |
| CN114216785A (en) * | 2021-12-16 | 2022-03-22 | 中国矿业大学 | Multi-field multi-phase variable frequency fracturing test device for large-size true triaxial coal rock mass |
Non-Patent Citations (2)
| Title |
|---|
| 刘东;许江;尹光志;王维忠;梁永庆;彭守建;: "多场耦合煤矿动力灾害大型模拟试验系统研制与应用", 岩石力学与工程学报, no. 05 * |
| 彭守建;张超林;梁永庆;许江;刘东;: "抽采瓦斯过程中煤层瓦斯压力演化规律的物理模拟试验研究", 煤炭学报, no. 03 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116008084B (en) | 2023-08-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105675724B (en) | Acoustic emission positioning and monitoring device and method for hydraulic fracture field of gas-containing coal body | |
| CN104792961B (en) | A kind of large scale coal and gas prominent analogue experiment installation | |
| CN105093962A (en) | Bidirectional flexible loading system simulating three-dimensional coal mining testing stand and method thereof | |
| CN201196634Y (en) | Coal rock, gas coupling osmosis bidirectional loading tester | |
| CN106053755A (en) | Coal and gas co-mining three-dimensional physical simulation comprehensive experiment system | |
| CN109142026B (en) | Coal body deformation test method under coal seam water injection fracturing influence mining action | |
| CN102979510B (en) | Coal seam water injection displacement gas effect simulated experiment system | |
| CN210775067U (en) | True triaxial test system for simulating different temperature influences of deep rock mass | |
| CN103471926A (en) | Coal rock true-triaxial microscopic mechanical test apparatus | |
| CN116148075B (en) | High-stress soft rock stratum deformation simulation test method under mining stress | |
| CN105181927A (en) | Multi-field coupled low permeability coal seam hydraulic fracturing simulation test method | |
| CN205445669U (en) | Moisture coal seam in different inclinations can be simulated and slip casting test device is filled | |
| CN116008084B (en) | Main body model for multi-field coupling coal rock mass dynamic disaster prevention and control simulation test | |
| CN205353043U (en) | Fill slip casting test device | |
| Ji et al. | A case study on the gas drainage optimization based on the effective borehole spacing in Sima coal mine | |
| CN108590768B (en) | Fluid-solid coupling stress monitoring system for water injection coal seam under non-uniform pressure | |
| CN207007659U (en) | A kind of axle servo seepage apparatus of coal seam containing gas dynamic disturbances fluid structurecoupling three | |
| CN105675818A (en) | Mining-affected coal seam floor water inrush simulation testing system | |
| CN116087458B (en) | Deep buried coal seam gas outburst test system | |
| CN115931678B (en) | Axial gas seepage test system under multi-field coupling condition | |
| CN116087468B (en) | Comprehensive test method for strength, strain and seepage of oil sand in high-temperature stress environment | |
| CN116026698B (en) | Test method for roof collapse of goaf of coal bed under disturbance stress | |
| CN116008083B (en) | Large-scale automatic true triaxial coal rock mass test piece simulation test system | |
| CN109142028B (en) | Coal seam deformation test device caused by working face tunneling | |
| CN115979911B (en) | Fracture rock mechanical response simulation test method in dynamic and static load complex environment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |