A coal mine underground pressure monitoring device

Abstract

The present invention discloses a coal mine underground pressure monitoring device, comprising a plurality of anchor rods, each of which is anchored in a corresponding structural hole, and the bottom of the anchor rod extends out of the structural hole, and the structural holes are distributed in the underground coal mine to be monitored area; a sealing plate is sleeved on the bottom of the anchor rod for sealing the orifice of the structural hole, the bottom of the sealing plate is limited by a nut, and the nut is threadedly connected to the bottom of the anchor rod, a suction hole is opened on the sealing plate, a sealing component is embedded in the suction hole, and the sealing component can realize the blocking and unblocking of the suction hole; it also includes a track component arranged on one side of the structural hole, and the direction of the track component is similar to the direction formed by the plurality of structural holes; it also includes a mobile detection component, which is movably arranged on the track component, and the mobile detection component can perform axial force test on the anchor rod and gas concentration detection in the structural hole.

Description

Technical Field

[0001] The invention relates to the technical field of mine pressure monitoring, in particular to a mine pressure monitoring device in an underground coal mine. Background Art

[0002] In the process of coal mining, with the continuous increase of mining intensity and the shift to deep mining, the safety problem of roof has become more and more prominent. Therefore, it is necessary to improve the monitoring of mine pressure accordingly. At present, when monitoring the mine pressure in coal mines, anchor rods are often put into the monitored area, and then the mine pressure is inferred by testing the axial force of the anchor rods. Each anchor rod corresponds to a detection device, the overall cost is high, the utilization rate is low, and the detection method is single.

[0003] Therefore, it is necessary to provide a coal mine underground pressure monitoring device to solve the problems raised in the above background technology. Summary of the invention

[0004] To achieve the above object, the present invention provides the following technical solution: a coal mine underground pressure monitoring device, comprising a plurality of anchor rods, each of which is anchored in a corresponding structural hole, and the bottom of the anchor rod extends out of the structural hole, the structural holes are distributed in the underground coal mine to be monitored area, and the directions of the plurality of structural holes can form a continuous straight line;

[0005] A sealing plate 1 is sleeved on the bottom of the anchor rod for sealing the opening of the structural hole. The bottom of the sealing plate 1 is limited by a nut, and the nut is threadedly connected to the bottom of the anchor rod. A suction hole is opened on the sealing plate, and a sealing component is embedded in the suction hole. The sealing component can realize the blocking and unblocking of the suction hole.

[0006] It also includes a track component disposed on one side of the construction hole, wherein the direction of the track component is similar to the direction formed by the plurality of construction holes;

[0007] It also includes a mobile detection component, which is movably arranged on the track component, and the mobile detection component can perform an axial force test on the anchor rod and perform a gas concentration test on the construction hole.

[0008] Furthermore, preferably, when the mobile detection assembly is used for monitoring the mine pressure, the gas concentration in the structural hole is first detected, and then the axial force test of the anchor rod in the same structural hole is performed.

[0009] Further, as a preference, the mobile detection assembly comprises a mounting seat, a sleeve and a suction pipe, wherein the mounting seat is symmetrically provided with a plurality of powered rollers, the rollers are carried on the track assembly, a lead screw is provided on one side below the mounting seat, the lead screw has a vertically movable end, the sleeve and the suction pipe are fixed on the vertically movable end, the sleeve is also electrically connected to the anchor rod non-destructive detector by a sensor, the anchor rod non-destructive detector is electrically connected to a controller, and the controller is fixed below the mounting seat;

[0010] The bottom of the suction pipe is connected to a gas concentration detector through a hose, and the gas concentration detector is electrically connected to a controller.

[0011] Further, as a preference, a compensation rod is horizontally fixed below the mounting seat using a connecting seat, and an output end of the compensation rod is fixedly connected to the lead screw.

[0012] Further, as a preference, the positions of the suction pipe and the sleeve are configured such that when the sleeve is tightly sleeved on the nut, the suction pipe can extend into the suction hole.

[0013] Further, as a preference, a limit seat is also connected between the compensation rod and the lead screw, and the limit seat limit sliding sleeve is arranged on the connecting seat.

[0014] Further, as a preference, a connecting rod is fixed to the output end of the lead screw, a deformable disk is fixed to the output end of the connecting rod, and the sleeve is fixedly connected to the deformable disk;

[0015] A conical tube is fixed at the bottom of the anchor rod, the tip of the conical tube points downward, and the outer diameter of the top of the conical tube is the same as the outer diameter of the nut.

[0016] Further, preferably, the track assembly comprises a plurality of track units hinged in sequence, and the angle between two adjacent track units is configured between 160° and 180°. When the angle between two adjacent track units is different from the angle formed by the corresponding three structural holes, the compensation amount is provided by the compensation rod.

[0017] Further, as a preference, the sealing assembly includes a sealing groove, the sealing groove is half-embedded in the suction hole, a sealing plate 2 is hinged on one side of the sealing groove, a hinged rod 2 is hinged on one side of the middle part of the sealing plate 2, the other end of the hinged rod 2 is hinged to the hinged rod 1, the other end of the hinged rod 1 is hinged to the sealing groove, and has a deflection force.

[0018] Further, as a preference, each of the anchor rods is provided with a different number, and each number corresponds to an actual coordinate data;

[0019] A camera is also arranged below the controller.

[0020] Compared with the prior art, the present invention provides a coal mine underground pressure monitoring device, which has the following beneficial effects:

[0021] In the present invention, a plurality of structural holes are arranged in the area to be monitored underground in the coal mine, and anchor rods are lowered through the structural holes. Then, the mine pressure monitoring of the coal mine is realized by detecting the axial force of the anchor rods. During monitoring, only one set of mobile detection components is set up, and the axial force test of the anchor rods can be realized by patrol-type detection, which has low cost. In addition, the mobile detection component can also detect the gas concentration in the structural hole, so as to analyze the relationship between the gas concentration and the mine pressure.

[0022] In the present invention, a compensation rod is provided. When the angle between two adjacent track monomers is different from the angle formed by the corresponding three structural holes, the compensation amount is provided by the compensation rod, thereby facilitating the smooth matching of the casing with the anchor rod and ensuring the smooth movement of the mobile detection assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a coal mine underground pressure monitoring device;

[0024] Figure 2 It is a structural schematic diagram of a mobile detection component in underground coal mine pressure monitoring equipment;

[0025] Figure 3 It is a structural schematic diagram of a track assembly in a coal mine underground pressure monitoring device;

[0026] Figure 4 A schematic diagram of the structure of the track assembly direction in a coal mine underground pressure monitoring device;

[0027] Figure 5 It is a structural schematic diagram of a sealing component in a coal mine underground pressure monitoring device;

[0028] In the figure: 1. anchor rod; 2. structural hole; 3. sealing plate 1; 4. suction hole; 5. sealing assembly; 6. nut; 7. mobile detection assembly; 8. track assembly; 71. mounting seat; 72. roller; 73. connecting seat; 74. compensation rod; 75. limit seat; 76. lead screw; 77. sleeve; 78. suction tube; 79. sensor; 710. controller; 711. camera; 81. track unit; 82. articulated shaft; 51. sealing groove; 52. articulated rod 1; 53. articulated rod 2; 54. sealing plate 2. DETAILED DESCRIPTION

[0029] Example: See Figures 1 to 5In an embodiment of the present invention, a coal mine underground pressure monitoring device includes a plurality of anchor rods 1, each of the anchor rods 1 is anchored in a corresponding structural hole 2, and the bottom of the anchor rod 1 extends out of the structural hole 2, the structural holes 2 are distributed in the coal mine underground monitoring area, and the directions of the plurality of structural holes 2 can form a continuous straight line;

[0030] The structural holes are pre-drilled and arranged in priority according to the actual situation. Among the structural holes arranged in priority, a plurality of suitable structural holes 2 are selected so that their directions can form a continuous straight line, and the straight line should have fewer bends and smaller bending angles.

[0031] The bottom of the anchor rod 1 is sleeved with a sealing plate 3 for sealing the opening of the structural hole 2. The bottom of the sealing plate 3 is limited by a nut 6, and the nut 6 is threadedly connected to the bottom of the anchor rod 1. The sealing plate 3 is provided with a suction hole 4, and a sealing component 5 is embedded in the suction hole 4. The sealing component 5 can realize the blocking and unblocking of the suction hole 4;

[0032] It also includes a track component 8 disposed on one side of the construction hole 2, wherein the direction of the track component 8 is similar to the direction formed by the plurality of construction holes 2;

[0033] It also includes a mobile detection component 7, which is movably arranged on the track component 8, and the mobile detection component 7 can perform an axial force test on the anchor rod 1 and perform a gas concentration test on the construction hole 2.

[0034] That is to say, in this embodiment, only one set of mobile detection components 7 can be provided to implement the axial force test of the anchor bolt 1 through patrol detection, thereby determining the underground mine pressure condition;

[0035] It should also be noted that, in this embodiment, the mobile detection assembly 7 can not only perform axial force tests on the anchor bolt 1, but also detect gas concentration in the construction hole 2, thereby analyzing the relationship between gas concentration and mine pressure conditions;

[0036] In addition, in this embodiment, the gas is confined in the structural hole, and the gas therein is sucked through the suction hole 4 on the sealing plate 3 located below the structural hole 2 to perform gas concentration detection, and the detection process does not affect the axial force test of the anchor rod 1;

[0037] Furthermore, in order to further reduce the impact on the axial force test of the anchor rod 1, when the mobile detection assembly 7 is used for mine pressure monitoring, the gas concentration in the construction hole 2 can be detected first, and then the axial force test of the anchor rod 1 in the same construction hole can be performed.

[0038] Of course, in some cases, the axial force test on the anchor rod 1 and the gas concentration test in the construction hole 2 can be performed simultaneously.

[0039] In this embodiment, Figure 2 The mobile detection assembly 7 includes a mounting seat 71, a sleeve 77 and a suction pipe 78, wherein the mounting seat 71 is symmetrically rotatably provided with a plurality of powered rollers 72, the rollers 72 are carried on the track assembly 8, a lead screw 76 is provided on one side below the mounting seat 71, the lead screw 76 has a vertically movable end, a sleeve 77 and a suction pipe 78 are fixed on the vertically movable end, the sleeve 77 is also electrically connected to the anchor rod non-destructive detector by a sensor 79, the anchor rod non-destructive detector is electrically connected to a controller 710, and the controller is fixed below the mounting seat 71;

[0040] The bottom of the suction pipe 78 is connected to a gas concentration detector via a hose, and the gas concentration detector is electrically connected to the controller 710 .

[0041] Among them, the lead screw is a common lead screw nut pair structure, which will not be described here;

[0042] When the axial force of the anchor rod is detected, the lead screw drives the sleeve 77 to move upward so as to be tightly sleeved on the screw rod, and then the anchor rod non-destructive detector is turned on, and an exciter is used to apply an excitation signal, which is propagated along the anchor rod and received by the sensor and subjected to spectrum analysis, so as to obtain the measured axial force of the anchor rod;

[0043] When the gas concentration of the construction hole 2 is detected, the lead screw drives the suction pipe 78 to move upward so as to extend into the suction hole 4. At this time, the gas in the construction hole 2 is sucked and detected by the gas concentration detector, thereby obtaining the gas concentration in the construction hole 2.

[0044] In order to ensure that the screw 76 only needs to be driven once to complete the axial force test of the anchor rod 1 and the gas concentration detection in the construction hole 2, the positions of the suction pipe 78 and the sleeve 77 are configured as follows: when the sleeve 77 is tightly mounted on the nut, the suction pipe 78 can extend into the suction hole 4.

[0045] In addition, a compensation rod 74 is horizontally fixed to the bottom of the mounting seat 71 by a connecting seat 73, and the output end of the compensation rod 74 is fixedly connected to the lead screw 76. The function of the compensation rod is to compensate for the increase or decrease in the spacing between the sleeve 77 and the anchor rod;

[0046] Specifically, Figure 3 and 4The track assembly 8 includes a plurality of track monomers 81 hinged in sequence, and the angle between two adjacent track monomers 81 is configured between 160° and 180°. When the angle between two adjacent track monomers 81 is different from the angle formed by the corresponding three structural holes 2, the compensation amount is provided by the compensation rod 74.

[0047] It should be explained that when laying the track assembly 8, it is necessary to ensure that the spacing between it and the first direction always remains the same;

[0048] The first direction is a direction formed by a plurality of anchor rods 1;

[0049] However, the first direction is sometimes tortuous. To ensure smooth movement of the mobile detection assembly, the angle between two adjacent track monomers 81 needs to be configured between 160° and 180°. At this time, when laying the track assembly 8, the spacing between the track assembly 8 and the first direction cannot be guaranteed to be exactly the same.

[0050] Therefore, when the angle between two adjacent track monomers 81 is different from the angle formed by the corresponding three structural holes 2, the compensation amount is provided by the compensation rod 74, so that the sleeve 77 can be smoothly matched with the anchor rod 1. In addition, the compensation amount can be obtained by pre-calculation.

[0051] In order to ensure the stability of the movement of the lead screw 76 , the sleeve 77 and the suction tube 78 , a limit seat 75 is further connected between the compensation rod 74 and the lead screw 76 , and the limit seat 75 is limitedly slidably sleeved on the connecting seat 73 .

[0052] Furthermore, two limit seats 75 are symmetrically fixed between the compensation rod 74 and the lead screw 76;

[0053] In this embodiment, a connecting rod is fixed to the output end of the lead screw 76, a deformable disk is fixed to the output end of the connecting rod, the sleeve 77 is fixedly connected to the deformable disk, and a vibration exciter is also provided on the connecting rod;

[0054] A conical tube is fixed at the bottom of the anchor rod 1 , with the tip of the conical tube facing downward, and the outer diameter of the top of the conical tube is the same as the outer diameter of the nut 6 .

[0055] In this embodiment, Figure 5 The sealing assembly 5 includes a sealing groove 51, and the sealing groove 51 is sealed and half-embedded in the suction hole 4. A sealing plate 2 54 is hinged on one side of the sealing groove 51, and a hinge rod 2 53 is hinged on one side of the middle part of the sealing plate 2 54. The other end of the hinge rod 2 53 is hinged to the hinge rod 1 52, and the other end of the hinge rod 1 52 is hinged to the sealing groove 51 and has a deflection force.

[0056] In this embodiment, each anchor rod 1 is provided with a different number, and each number corresponds to an actual coordinate data;

[0057] A camera 711 is also disposed below the controller 710 .

[0058] Of course, the camera 711 can also capture some situations in the coal mine during its movement, making it convenient for the staff to conduct manual inspection.

[0059] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coal mine underground pressure monitoring device, characterized in that: It comprises a plurality of anchor rods (1), each of the anchor rods (1) being anchored in a corresponding structural hole (2), and the bottom of the anchor rod (1) protruding out of the structural hole (2), the structural holes (2) being distributed in an area to be monitored underground in a coal mine, and the directions of the plurality of structural holes (2) can form a continuous straight line; The bottom of the anchor rod (1) is sleeved with a sealing plate (3) for sealing the opening of the structural hole (2); the bottom of the sealing plate (3) is limited by a nut (6); the nut (6) is threadedly connected to the bottom of the anchor rod (1); a suction hole (4) is provided on the sealing plate (3); a sealing component (5) is embedded in the suction hole (4); the sealing component (5) can realize blocking and unblocking of the suction hole (4); It also includes a track component (8) arranged on one side of the construction hole (2), wherein the direction of the track component (8) is similar to the direction formed by the plurality of construction holes (2); It also includes a mobile detection component (7) which is movably arranged on the track component (8), and the mobile detection component (7) is capable of performing an axial force test on the anchor rod (1) and performing a gas concentration test on the construction hole (2); The mobile detection assembly (7) comprises a mounting seat (71), a sleeve (77) and a suction pipe (78); a plurality of powered rollers (72) are symmetrically rotatably arranged on the mounting seat (71); the rollers (72) are supported on the track assembly (8); a lead screw (76) is arranged on one side below the mounting seat (71); the lead screw (76) has a vertically movable end; a sleeve (77) and a suction pipe (78) are fixed to the vertically movable end; the sleeve (77) is also electrically connected to the anchor rod non-destructive detector by using a sensor (79); the anchor rod non-destructive detector is electrically connected to a controller (710); and the controller is fixed below the mounting seat (71); The bottom of the suction pipe (78) is connected to a gas concentration detector through a hose, and the gas concentration detector is electrically connected to a controller (710); A compensation rod (74) is horizontally fixed below the mounting seat (71) by a connecting seat (73), and the output end of the compensation rod (74) is fixedly connected to the lead screw (76); The track assembly (8) comprises a plurality of track monomers (81) hinged in sequence, wherein the angle between two adjacent track monomers (81) is configured to be between 160° and 180°, and when the angle between two adjacent track monomers (81) is different from the angle formed by the corresponding three structural holes (2), the compensation amount is provided by the compensation rod (74).

2. The underground coal mine pressure monitoring device according to claim 1, characterized in that: When the mobile detection component (7) is used to monitor the mine pressure, the gas concentration in the structural hole (2) is first detected, and then the axial force test of the anchor rod (1) in the same structural hole is performed.

3. The underground coal mine pressure monitoring device according to claim 1 is characterized in that: The positions of the suction tube (78) and the sleeve (77) are configured such that when the sleeve (77) is tightly sleeved on the nut, the suction tube (78) can extend into the suction hole (4).

4. The underground coal mine pressure monitoring device according to claim 1, characterized in that: A limit seat (75) is also connected between the compensation rod (74) and the lead screw (76), and the limit seat (75) is limit-slidably sleeved on the connection seat (73).

5. The underground coal mine pressure monitoring device according to claim 1 is characterized in that: A connecting rod is fixed to the output end of the lead screw (76), a deformable disk is fixed to the output end of the connecting rod, and the sleeve (77) is fixedly connected to the deformable disk; A conical tube is fixed at the bottom of the anchor rod (1), the tip of the conical tube points downward, and the outer diameter of the top of the conical tube is the same as the outer diameter of the nut (6).

6. The underground coal mine pressure monitoring device according to claim 1, characterized in that: The sealing assembly (5) comprises a sealing groove (51), wherein the sealing groove (51) is sealingly half-embedded in the suction hole (4), a sealing plate 2 (54) is hingedly connected to one side of the sealing groove (51), a hinged rod 2 (53) is hingedly connected to one side of the middle of the sealing plate 2 (54), the other end of the hinged rod 2 (53) is hingedly connected to a hinged rod 1 (52), the other end of the hinged rod 1 (52) is hingedly connected to the sealing groove (51), and has a deflection force.

7. The underground coal mine pressure monitoring device according to claim 1, characterized in that: Each anchor rod (1) is provided with a different number, and each number corresponds to an actual coordinate data; A camera (711) is also provided below the controller (710).

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