Supporting device for mine fracture structure

Abstract

The invention relates to the technical field of coal mine tunnel supporting, and discloses a supporting device for a mine fracture structure, which comprises a bracket, a rotating support plate rotationally mounted on the bracket and a through groove formed in the side wall of the bracket, and further comprises a supporting air bag fixedly mounted on the bracket and the rotating support plate, a driving part is arranged at the lower end of the rotating support plate, and a driving part is arranged at the lower end of the supporting air bag; the driving part comprises a mounting block which is fixedly mounted on the side wall of the support, an air cylinder is hinged to the mounting block, and the end, away from the mounting block, of the air cylinder is hinged to the rotating supporting plate. Through cooperation of the supporting air bag and the transfer part, when waste rocks fall off from a top plate, a cavity can appear, the waste rocks enter the transfer part through the guide part, gas in the transfer part enters the supporting air bag through the gas conveying pipe, the supporting air bag moves towards the cavity, and gas accumulated in the cavity can be extruded out; the gas sensor installed near the supporting structure can sense the change of the gas, so that the gas is prevented from being accumulated in the cavity, and potential safety hazards are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mine roadway support, in particular to a support device for mine fracture structure. BACKGROUND

[0002] The mine fracture structure is a rock stratum continuity damage area formed under the action of crustal movement or geological stress, which is manifested in the form of faults, joints, fissures, etc., and its core feature is the loss of rock mass integrity and the existence of a significant displacement or fracture zone. The formation of such structure is mainly due to geological processes such as crustal plate movement, rock stratum extrusion or magmatic activity, which leads to unbalanced stress distribution in the coal rock mass, forming a brittle fracture surface. The fracture structure not only causes direct disasters such as roadway roof collapse and roof fall, but also becomes a migration channel for harmful substances such as underground water and gas, aggravating the secondary risks of water inrush and gas outburst.

[0003] The support for the mine fracture structure needs to have the compression resistance to cope with the uneven deformation and stress concentration of the fracture zone rock mass, and if necessary, combined with grouting reinforcement or composite support structure to enhance the overall stability; in addition, the support device needs to integrate real-time monitoring function to monitor displacement, water seepage and stress change through sensors to realize dynamic early warning and parameter optimization, avoiding the lag risk. At the same time, the support design needs to take into account the economy and construction efficiency, for example, using modular assembly structure to shorten the installation period, and predicting the fracture zone position through geological exploration and numerical simulation to optimize the support layout.

[0004] However, the roof at the fracture structure is broken, and the gangue is prone to shaking, and under the influence of ground stress and mining disturbance, the shaken gangue is more likely to fall, which will cause the roadway roof to have a cavity, and the coal body near the fracture structure is prone to fragmentation and deformation due to tectonic stress, forming structure coal. The micro-pore and fissure of structure coal develop, and the adsorption capacity is significantly improved, which can store more gas. When the cavity appears at the top of the roadway, gas is more likely to accumulate in the cavity, which may cause the gas concentration to be too high, and in severe cases, may even lead to gas explosion. SUMMARY

[0005] Therefore, a support device for mine fracture structure is proposed to solve the problems in the background technology.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a support device for mine fracture structure, comprising a support, a rotating support plate rotatingly installed on the support, and a through slot opened on the side wall of the support, further comprising:

[0007] A support air bag is arranged on the rotating support plate to prevent damage to the support when the gangue falls;

[0008] The transfer piece is arranged on the bottom plate of the support, and can drive the supporting air bag to block the cavity when the top plate cavity appears, so as to prevent gas from accumulating in the cavity.

[0009] The guide piece is arranged on the side wall of the through groove, and the gangue falling from the top plate enters the transfer piece along the guide piece.

[0010] The supporting air bag is fixedly installed on the support and the rotating support plate, the lower end of the rotating support plate is provided with a driving piece, the driving piece comprises a mounting block, the mounting block is fixedly installed on the side wall of the support, a gas cylinder is hinged to the mounting block, and the end, away from the mounting block, of the gas cylinder is hinged to the rotating support plate.

[0011] Preferably, the transfer piece comprises a transfer box, a gas conveying pipe is fixedly installed on the transfer box, the gas conveying pipe communicates with the supporting air bag through the rotating support plate, a push plate is slidably installed in the transfer box, and the space below the push plate in the transfer box is a closed environment filled with gas.

[0012] Preferably, a mounting rack is fixedly installed on the transfer box, a bellows is fixedly installed on the mounting rack, the other end of the bellows is fixedly connected with the push plate, and a gas suction pipe is fixedly installed on the bellows.

[0013] Preferably, the diameter of the gas suction pipe is greater than that of the gas conveying pipe.

[0014] Preferably, a plurality of connecting rods are fixedly installed at the lower end of the push plate, a fixed plate is fixedly installed at the end, away from the push plate, of each connecting rod, and a plurality of insertion rods are arranged on the fixed plate.

[0015] Preferably, the guide piece is a hollow arc-shaped plate, one opening of the guide piece faces the opposite direction of gravity, and the other opening communicates with the space above the push plate of the transfer box.

[0016] Preferably, a fixed insertion rod is fixedly installed on the side wall of the support beside the guide piece.

[0017] Preferably, side protection plates are fixedly installed on the support and the rotating support plate.

[0018] Preferably, a protective net is fixedly installed between the side protection plates on the support and the rotating support plate.

[0019] Preferably, the material of the protective net is wear-resistant material.

[0020] Compared with the prior art, the supporting device for the mine fracture structure has the following beneficial effects:

[0021] 1、The present application cooperates with the supporting air bag and the transfer piece, when the roof falls gangue, a cavity will appear, and the gangue will enter into the transfer piece through the guide piece, which will make the gas in the transfer piece enter into the supporting air bag through the gas conveying pipe, which will make the supporting air bag move to the cavity, so that the accumulated gas in the cavity is squeezed out, so that the gas sensor installed near the supporting structure can sense the change of the gas, avoiding the accumulation of gas in the cavity, which will cause safety hazards.

[0022] 2、The present application cooperates with the corrugated pipe and the transfer piece, when the gangue falls into the transfer piece, it will drive the push plate to move, that is, the corrugated pipe will be lengthened, and the diameter of the gas conveying pipe is smaller than that of the air suction pipe, when the push plate moves, the gas conveying pipe and the air suction pipe will work synchronously, and due to the difference in diameter, the air suction amount of the air suction pipe will be greater than the air suction amount in the same time, at this time, the supporting air bag will shrink to a certain extent, and then the gas is blown into the supporting air bag through the gas conveying pipe to make it expand, so that part of the gangue that has not fallen on the supporting air bag is shaken off under the contraction and expansion of the air bag, preventing the gangue from being stuck between the air bag and the roof of the roadway to grind the air bag.

[0023] 3、The present application cooperates with the fixed plate and the fixed plug rod, the fixed plug rod can fix the device in the lateral direction, and the stability of the device is enhanced, the fixed plate will drive the plug rod to insert into the roadway floor under the compaction of the gravity of the gangue, and the device is fixed in the vertical direction, further enhancing the stability of the device.

[0024] 4、The present application cooperates with the side guard plate and the protective net, which can prevent the gangue from falling from the side of the support and the rotating side plate to hurt the workers, improve the safety of the device, and reduce personnel casualties. DETAILED DESCRIPTION

[0025] Figure 1 It is a top view structure diagram of the present application;

[0026] Figure 2 It is another side view structure diagram of the present application;

[0027] Figure 3 It is a whole structure diagram of the present application;

[0028] Figure 4 It is a structure diagram of the present application Figure Three A place in the middle;

[0029] Figure 5 It is an internal structure diagram of the transfer box of the present application;

[0030] Figure 6 It is a whole structure diagram of the fixed plate and the plug rod of the present application;

[0031] Figure 7This is a structural diagram of the side guards of the present invention when a protective net is installed between them.

[0032] In the picture:

[0033] 1. Support frame; 2. Rotating support plate; 3. Support airbag;

[0034] 4. Transfer component; 41. Transfer box; 42. Gas supply pipe; 43. Mounting bracket; 44. Corrugated pipe; 45. Suction pipe; 46. Push plate; 47. Connecting rod; 48. Fixing plate; 49. Insert rod;

[0035] 5. Guide component; 6. Through groove; 7. Fixing rod;

[0036] 8. Drive components; 81. Mounting block; 82. Cylinder;

[0037] 9. Side guard plate; 10. Protective netting. Detailed Implementation

[0038] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, some features described in the examples may be combined in other examples.

[0039] like Figures 1 to 7 As shown, this embodiment of the invention provides a support device for mine fracture structures, including a support 1, a rotating support plate 2 rotatably mounted on the support 1, and a through groove 6 formed on the side wall of the support 1, and further including:

[0040] Support airbag 3 is installed on rotating support plate 2 to prevent damage to support 1 when gangue falls;

[0041] The transfer unit 4 is installed on the base plate of the support 1. When a hole appears in the top plate, it can drive the support airbag 3 to block the hole and prevent gas from accumulating in the hole.

[0042] The guide 5 is installed on the side wall of the through groove 6. The gangue falling from the top plate will enter the transfer part 4 along the guide 5.

[0043] The support airbag 3 is fixedly installed on the bracket 1 and the rotating support plate 2. The lower end of the rotating support plate 2 is provided with a driving component 8. The driving component 8 includes a mounting block 81. The mounting block 81 is fixedly installed on the side wall of the bracket 1. A cylinder 82 is hinged on the mounting block 81. The end of the cylinder 82 away from the mounting block 81 is hinged to the rotating support plate 2.

[0044] The working principle and beneficial effects of the above technical solution are that the device is moved to the position of the fractured structure, the air cylinder 82 is started, and when the air cylinder 82 is started, the rotating support plate 2 is rotated to the horizontal position to form a protection mechanism with the support 1. When the roadway roof appears to drop the gangue, the gangue will slide along the supporting air bag 3 to the guide piece 5, and then enter the transfer piece 4 along the guide piece 5. Through the action of the transfer piece 4, the supporting air bag 3 will expand, thereby filling the cavity, preventing gas from accumulating in the cavity, and causing subsequent safety problems. At the same time, the supporting air bag 3 can prevent the gangue from directly colliding with the support 1 and the rotating support plate 2, thereby preventing damage to the device.

[0045] In one embodiment, the transfer piece 4 includes a transfer box 41, the transfer box 41 is fixedly installed with a gas conveying pipe 42, the gas conveying pipe 42 communicates with the supporting air bag 3 through the rotating support plate 2, and the transfer box 41 is slidably installed with a push plate 46. The transfer box 41 below the push plate 46 is a closed environment filled with gas.

[0046] The working principle and beneficial effects of the above technical solution are that when the gangue enters the transfer box 41, the push plate 46 is pressed downward, and the gas in the closed environment below the push plate 46 is squeezed into the gas conveying pipe 42 and finally into the supporting air bag 3, so that the supporting air bag 3 expands.

[0047] In one embodiment, the transfer box 41 is fixedly installed with a mounting bracket 43, the mounting bracket 43 is fixedly installed with a bellows 44, the other end of the bellows 44 is fixedly connected with the push plate 46, and the bellows 44 is fixedly installed with an air extraction pipe 45.

[0048] The working principle and beneficial effects of the above technical solution are that when the gangue enters the transfer box 41, the push plate 46 is pressed downward, and the push plate 46 will lengthen the bellows 44. After the bellows 44 is lengthened, the gas in the supporting air bag 3 is extracted through the air extraction pipe 45.

[0049] In one embodiment, the diameter of the air extraction pipe 45 is greater than the diameter of the gas conveying pipe 42.

[0050] The working principle and beneficial effects of the above technical solution are that when the gangue falls into the transfer piece 4, the push plate 46 moves, which lengthens the bellows 44. The diameter of the gas conveying pipe 42 is smaller than the diameter of the air extraction pipe 45. When the push plate 46 moves, the gas conveying pipe 42 and the air extraction pipe 45 work synchronously. Due to the different diameters, the air extraction amount of the air extraction pipe 45 is greater than the air suction amount in the same time. At this time, the supporting air bag 3 will contract to a certain extent, and then the gas is blown into the supporting air bag 3 through the gas conveying pipe 42 to make it expand. The gangue that is not dropped on the supporting air bag 3 can be shaken off under the contraction and expansion of the air bag, thereby preventing the gangue from being stuck between the air bag and the roadway roof and damaging the air bag.

[0051] In one embodiment: the lower end of the push plate 46 is fixedly installed with a plurality of connecting rods 47, the end of the connecting rod 47 away from the push plate 46 is fixedly installed with a fixed plate 48, and the fixed plate 48 is provided with a plurality of insertion rods 49.

[0052] The working principle and beneficial effects of the above technical solution are: when the push plate 46 moves downward, the connecting rod 47 moves downward synchronously, and then the fixed plate 48 moves downward, and finally the insertion rod 49 is inserted into the bottom of the roadway, so that the device is fixed in the vertical direction, and the stability of the device is improved.

[0053] In one embodiment: the guide 5 is a hollow arc-shaped plate, one opening of the guide 5 faces the opposite direction of gravity, and the other opening is in communication with the space above the push plate 46 of the transfer box 41.

[0054] The working principle and beneficial effects of the above technical solution are: the gangue falling along the supporting air bag 3 enters the opening of the guide 5 facing the opposite direction of gravity, and then slows down through the arc-shaped section of the guide 5 and enters the space above the push plate 46 of the transfer box 41, which can control the expansion degree of the supporting air bag 3 according to the amount of gangue falling, and can temporarily store the falling gangue for subsequent collection and use, and finally the worker can judge the degree of the cavity of the gangue falling from the top of the roadway according to the amount of gangue in the transfer box 41, which facilitates the subsequent filling work.

[0055] In one embodiment: the side wall of the support 1 beside the guide 5 is fixedly installed with a fixed insertion rod 7.

[0056] The working principle and beneficial effects of the above technical solution are: the fixed insertion rod 7 is fixed into the side of the roadway, and the device can be fixed in the lateral direction through the fixed insertion rod 7, thereby enhancing the stability of the device.

[0057] In one embodiment: the side guard plate 9 is fixedly installed on the support 1 and the rotating support plate 2.

[0058] The working principle and beneficial effects of the above technical solution are: the side guard plate 9 can prevent the worker from being injured by the gangue falling from the side of the support 1 and the rotating support plate 2, improve the safety of the device, and reduce personnel casualties.

[0059] In one embodiment: the side guard plate 9 on the support 1 and the rotating support plate 2 is also fixedly installed with a protective net 10.

[0060] The working principle and beneficial effects of the above technical solution are: the protective net 10 can prevent the worker from being injured by the gangue falling from the side of the support 1 and the rotating support plate 2, improve the safety of the device, and reduce personnel casualties.

[0061] In one embodiment: the material of the protective net 10 is wear-resistant material.

[0062] The working principle and beneficial effects of the above technical solution are: the material of the protective net 10 needs to be selected according to the different support environments, if the support roadway is a small cross-section roadway such as a pedestrian walkway and a connecting roadway with a cross-sectional area ≤10㎡, due to the narrow space, a light and easy-to-install protective net is needed, such as a steel-plastic composite net and a galvanized steel wire net; if the support roadway is a medium cross-section roadway such as a transportation roadway and a return air roadway with a cross-sectional area of 10-20㎡, the strength and coverage area need to be considered, a reinforcing mesh and a metal diamond mesh can be selected; if the support roadway is a large cross-section roadway such as a main shaft and a large roadway with a cross-sectional area ≥20㎡, a high-strength and large-coverage-area protective net is needed, such as a high-strength steel-plastic composite net and a combined metal net.

[0063] Working principle and use process:

[0064] Firstly, the device is moved to the position of the fractured structure, and the air cylinder 82 is started, which makes the rotating support plate 2 rotate to the horizontal position to form a protection mechanism with the support 1. When the roof of the roadway appears to drop the gangue, the gangue will slide along the supporting air bag 3 to the guide piece 5, and then enter the transfer piece 4 along the guide piece 5. Through the action of the transfer piece 4, the supporting air bag 3 will expand, which can fill the cavity and prevent gas from accumulating in the cavity, thereby preventing subsequent safety problems. At the same time, the supporting air bag 3 can prevent the gangue from directly colliding with the support 1 and the rotating support plate 2, thereby preventing damage to the device.

[0065] Then, when the gangue enters the transfer box 41, the push plate 46 will be pressed down, at this time the push plate 46 will lengthen the corrugated pipe 44, and the corrugated pipe 44 will extract the gas from the supporting air bag 3 through the air extraction pipe 45. When the gangue enters the transfer box 41, the gas in the closed environment below the push plate 46 will be squeezed into the gas conveying pipe 42, and finally into the supporting air bag 3, so that the supporting air bag 3 expands. The diameter of the gas conveying pipe 42 is smaller than that of the air extraction pipe 45. When the push plate 46 moves, the gas conveying pipe 42 and the air extraction pipe 45 work synchronously, and due to the difference in diameter, the air extraction amount of the air extraction pipe 45 will be greater than the air suction amount in the same time. At this time, the supporting air bag 3 will contract to a certain extent, and then the gas conveying pipe 42 blows gas into the supporting air bag 3 to make it expand, so that part of the gangue that is not dropped on the supporting air bag 3 is shaken off under the contraction and expansion of the air bag, preventing the gangue from being stuck between the air bag and the roadway roof and causing the air bag to be worn out.

[0066] Importantly, when the push plate 46 moves downward, it will drive the connecting rod 47 to move downward synchronously, and then drive the fixed plate 48 to move downward, and finally drive the insertion rod 49 to be inserted into the bottom of the roadway, so that the device can be fixed in the vertical direction, improving the stability of the device. The fixed insertion rod 7 is fixed into the side of the roadway, and the device can be fixed in the lateral direction through the fixed insertion rod 7, thereby enhancing the stability of the device.

[0067] In addition, the gangue sliding along the supporting air bag 3 will enter from the opening of the guide 5 in the direction opposite to gravity, and then slow down through the arc segment of the guide 5 and enter the space above the push plate 46 of the transfer box 41. On the one hand, the expansion degree of the supporting air bag 3 can be controlled according to the amount of gangue falling, and on the other hand, the falling gangue can be temporarily stored for subsequent collection and use. Finally, the workers can also determine the degree of the cavity of the gangue falling from the roof of the roadway according to the amount of gangue in the transfer box 41, so as to facilitate the subsequent filling work.

[0068] After that, the side guard plate 9 and the protective net 10 can prevent the gangue from falling and injuring the workers from the side of the support 1 and the rotating support plate 2, improve the safety of the device, and reduce personnel casualties.

[0069] Finally, the material of the protective net 10 needs to be selected according to different supporting environments. If the supporting roadway is a small cross-section roadway such as a pedestrian walkway and a connecting roadway with a cross-sectional area ≤10㎡, due to the narrow space, a light and easy-to-install protective net is required, and a steel-plastic composite net or a galvanized steel wire net can be selected. If the supporting roadway is a medium cross-section roadway such as a transportation roadway and a return airway with a cross-sectional area of 10-20㎡, the strength and coverage area need to be considered, and a steel mesh or a metal diamond net can be selected. If the supporting roadway is a large cross-section roadway such as a main shaft and a large roadway with a cross-sectional area ≥20㎡, a high-strength and large-coverage-area protective net is required, and a high-strength steel-plastic composite net or a combined metal net can be selected.

[0070] The above describes the embodiments of the present application, but the embodiments are not limited to the above specific embodiments, and the above specific embodiments are only illustrative and not restrictive. Those skilled in the art can make many forms under the inspiration of the embodiments, which are all within the protection scope of the embodiments.

Claims

1. A supporting device for mine fracture structure, comprising a support (1), a rotating support plate (2) rotatably installed on the support (1), and a through slot (6) formed in the side wall of the support (1), characterized in that, Also include: Support air bag (3) is arranged on the rotating support plate (2), for preventing damage to the support (1) when the gangue falls; The transfer member (4) is arranged on the bottom plate of the support (1), and when the roof cavity appears, the support air bag (3) can be driven to block the cavity to prevent gas accumulation in the cavity; The guide member (5) is arranged on the side wall of the through slot (6), and the gangue falling from the roof will enter the transfer member (4) along the guide member (5). The support air bag (3) is fixedly installed on the support (1) and the rotating support plate (2), the lower end of the rotating support plate (2) is provided with a driving member (8), the driving member (8) comprises a mounting block (81), the mounting block (81) is fixedly installed on the side wall of the support (1), the mounting block (81) is hingedly connected with a cylinder (82), and the end, away from the mounting block (81), of the cylinder (82) is hingedly connected with the rotating support plate (2).

2. A support device for a mine fracture structure according to claim 1, characterized in that: The transfer member (4) comprises a transfer box (41), the transfer box (41) is fixedly installed with a gas conveying pipe (42), the gas conveying pipe (42) passes through the rotating support plate (2) and communicates with the support air bag (3), and the transfer box (41) is slidably installed with a push plate (46), and the transfer box (41) below the push plate (46) is a closed environment full of gas.

3. A support device for a mine fracture structure according to claim 2, characterized in that: The transfer box (41) is fixedly installed with a mounting rack (43), the mounting rack (43) is fixedly installed with a bellows (44), the other end of the bellows (44) is fixedly connected with the push plate (46), and the bellows (44) is fixedly installed with an air extraction pipe (45).

4. A support device for a mine fracture structure according to claim 3, characterized in that: The diameter of the air extraction pipe (45) is greater than that of the gas conveying pipe (42).

5. A mine fracture construction support device according to claim 4, characterised in that: The lower end of the push plate (46) is fixedly installed with a plurality of connecting rods (47), one end, away from the push plate (46), of the connecting rod (47) is fixedly installed with a fixed plate (48), and the fixed plate (48) is provided with a plurality of insertion rods (49).

6. A mine fracture construction support device according to claim 5, characterised in that: The guide member (5) is a hollow arc-shaped plate, one opening of the guide member (5) faces the opposite direction of gravity, and the other opening communicates with the space above the push plate (46) of the transfer box (41).

7. A mine fracture construction support device according to claim 6, characterised in that: The side wall of the support (1) beside the guide member (5) is fixedly installed with a fixed insertion rod (7).

8. A mine fracture construction support device according to claim 7, characterised in that: The support (1) and the rotating support plate (2) are both fixedly installed with side guard plates (9).

9. A mine fracture construction support device according to claim 8, characterised in that: The side guard plates (9) on the support (1) and the rotating support plate (2) are also fixedly installed with a protective net (10).

10. A mine fracture construction support device according to claim 9, characterised in that: The material of the protective net (10) is wear-resistant material.

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