Mechanism and method for recognizing whether mine rockfall exists or not through tensile force

Abstract

The invention discloses a mechanism and method for recognizing whether mine rockfall exists or not through tensile force, and belongs to the technical field of rockfall recognition. The mechanism comprises a positioning frame installed on the side face of an underground rock wall, and a plurality of intercepting supports distributed in a linear array are arranged on the positioning frame at intervals; an intercepting support arm extending outwards is mounted in each intercepting support; a plurality of steel wire ropes which are in a double-layer linear array and are in a tensioned state are mounted on each intercepting support arm, a detection air bag which is propped against all the steel wire ropes is also mounted in each intercepting support arm, and one end of the detection air bag is connected with an alarm unit which is positioned outside the intercepting support arm; when the tension of the steel wire rope changes, the steel wire rope can abut against the detection air bag and change the air pressure in the detection air bag. The mechanism can calibrate which part under the shaft is easier to fall rocks and the frequency of falling rocks, and can effectively reduce the potential safety hazard caused by falling rocks during underground operation.

Description

Technical Field

[0001] The invention relates to the technical field of rockfall interception, in particular to a mechanism and a method thereof that utilizes tensioning force to identify whether rockfall exists in a mine. Background Art

[0002] During mining operations, falling rocks and debris often occur at the top of the mine. These falling rocks can damage the equipment under the mine, making it impossible to use the equipment normally, affecting work efficiency, and also posing a major safety hazard.

[0003] At present, during underground operations, fallen rocks are mainly intercepted by installing reinforced rockfall barriers on the sides of the underground stone walls. However, the rockfall barriers cannot indicate which part of the underground is more prone to falling rocks, as well as the frequency of falling rocks, which poses certain safety hazards to underground workers. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a mechanism and method thereof which can calibrate the position and frequency of rockfall underground and use tensioning force to identify whether there is rockfall in a mine.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A mechanism for identifying the presence of rockfall in a mine using tensioning force, comprising a positioning frame installed on the side of a rock wall underground, a plurality of interception supports distributed in a linear array are arranged at intervals on the positioning frame, and an interception arm extending outward is installed in each interception support;

[0007] Each intercepting arm is equipped with multiple double-layer linear array steel ropes in a tensioned state. Each intercepting arm is also equipped with a detection airbag that contacts all the steel ropes. One end of the detection airbag is connected to an alarm unit located outside the intercepting arm. When the tension of the steel rope changes, the steel rope can contact the detection airbag and change the air pressure inside the detection airbag.

[0008] With the above scheme, since the steel wire rope is always in conflict with the detection airbag, the vibration of the steel wire rope will change the air pressure in the detection airbag. If the change of the air pressure exceeds the set range of the pressure detection module, the pressure detection module will feed back the signal to the central processor, and the central processor will control the alarm indicator light. After the staff recognizes that the alarm indicator light is on, they will promptly clean up the fallen rocks accumulated on the steel wire rope. By recording the position and frequency of the alarm indicator light, they can accurately grasp the rockfall situation underground, thereby effectively reducing the safety hazards caused by rockfall during underground operations.

[0009] As a preferred implementation of an apparatus for identifying the presence of fallen rocks in a mine using tension, the detection airbag is filled with an inert gas, and the air pressure of the inert gas is 1.2 - 1.5 bar.

[0010] With the above solution, in order to improve the accuracy of detection, an inert gas such as nitrogen is filled into the detection airbag. The inert gas has stable chemical properties during application and can effectively reduce errors.

[0011] As a preferred implementation of an apparatus for identifying the presence of fallen rocks in a mine using tension, the alarm unit includes a pressure detection module, a central processor, an alarm indicator light, and a battery. The pressure detection module extends all the way into the detection airbag.

[0012] With the above solution, in order to achieve an alarm, since the steel wire rope is always in contact with the detection airbag, the air pressure inside the detection airbag will change when the steel wire rope vibrates. When the change in this air pressure exceeds the set range of the pressure detection module, the pressure detection module will then feedback a signal to the central processor, and the central processor will control the alarm indicator light to turn on.

[0013] As a preferred implementation of an apparatus for identifying the presence of fallen rocks in a mine using tension, all the intercepting arms are in an inclined state and have the same inclination angle. The inclination angle between the intercepting arm and the vertical plane is 60 - 70°.

[0014] With the above solution, in order to better intercept the fallen rocks, all the intercepting arms are inclined. At this time, the fallen rocks will accumulate on the steel wire rope after falling, thus preventing the fallen rocks from rolling and injuring the staff.

[0015] As a preferred implementation of an apparatus for identifying the presence of fallen rocks in a mine using tension, linear array - distributed steel wire limiting grooves are provided on both the upper and lower surfaces of the intercepting arm, and only one steel wire rope is placed in each steel wire limiting groove.

[0016] With the above solution, in order to improve the limiting effect of the steel wire rope, the steel wire rope is placed in the steel wire limiting groove, thereby improving the stability of the steel wire rope.

[0017] As a preferred implementation of an apparatus for identifying the presence of fallen rocks in a mine using tension, a jack is provided at the end of the intercepting arm, and a self - locking rod that completely locks the steel wire rope in the steel wire limiting groove is inserted into the jack;

[0018] Among them, there are two self - locking rods in total. Each self - locking rod is an N - shaped locking rod, and each self - locking rod locks all the steel wire ropes on the upper and lower surfaces of the intercepting arm at the same time.

[0019] With the above solution, in order to lock the wire rope in the wire limiting groove, after the self-locking rod is inserted into the jack, the self-locking rod will abut against the wire rope and be clamped in the wire limiting groove, thereby fully tensioning the wire rope.

[0020] As a preferred embodiment of a mechanism for using the tension force to identify the presence of falling rocks in a mine, the intercepting support and the intercepting support arm are connected by a pin, and the pin is inserted into an adjustment jack provided in the intercepting support arm.

[0021] With the above solution, in order to facilitate the adjustment of the inclination angle of the intercepting support arm, the pin can be taken out. After adjusting the inclination angle of the intercepting support arm, inserting the pin into the adjustment jack can complete the adjustment of the inclination angle of the intercepting support arm, making it more flexible in application.

[0022] As a preferred embodiment of a mechanism for using the tension force to identify the presence of falling rocks in a mine, there are multiple positioning holes provided on the positioning frame, and a drill rod embedded in the side wall of the underground mine rock is installed in each positioning hole. The positioning frame is suspended and fixed on the side wall of the underground mine rock by an installation bolt at the end of the drill rod away from the drill bit.

[0023] With the above solution, in order to fix the positioning frame, first drill the drill rod into the side wall of the underground mine rock, then suspend the positioning frame on the drill rod, and finally suspend and fix the positioning frame on the side wall of the underground mine rock by bolts.

[0024] A method for using the tension force to identify the presence of falling rocks in a mine, which is implemented by the above mechanism for using the tension force to identify the presence of falling rocks in a mine. The operation steps are as follows:

[0025] S1. First install the positioning frame; drill the drill rod into the side wall of the underground mine rock, then suspend the positioning frame on the drill rod, and then suspend and fix the positioning frame on the side wall of the underground mine rock by bolts;

[0026] S2. Adjust the inclination angle of the intercepting support arm; take out the pin, after adjusting the inclination angle of the intercepting support arm so that the inclination angle with the vertical plane is 60 - 70°, insert the pin into the adjustment jack to complete the adjustment of the inclination angle of the intercepting support arm;

[0027] S3. Layout and install the wire rope; place the wire rope in the wire limiting groove, after inserting the self-locking rod into the jack, as the self-locking rod is continuously inserted, the self-locking rod will abut against the wire rope and be clamped in the wire limiting groove, thereby fully tensioning the wire rope;

[0028] S4. When a falling rock drops onto the wire rope, the wire rope will vibrate slightly after being impacted by the falling rock, and its vibration sensation will be transmitted to the two nearest intercepting support arms and then transmitted to the detection airbag;

[0029] S5. Since the steel wire rope is always in contact with the detection airbag, the vibration of the steel wire rope will change the air pressure inside the detection airbag. When the change in this air pressure exceeds the set range of the pressure detection module, the pressure detection module will feedback a signal to the central processing unit, and the central processing unit will control the alarm indicator light to turn on;

[0030] S6. After the staff member recognizes that the alarm indicator light is on, they promptly clean the falling stones piled up on the steel wire rope. By recording the position and frequency of the alarm indicator light turning on, they can accurately grasp the situation of the falling stones underground.

[0031] After adopting the above technical solution, the beneficial effects of the present invention are:

[0032] 1. Since the steel wire rope is always in contact with the detection airbag, the vibration of the steel wire rope will change the air pressure inside the detection airbag. When the change in this air pressure exceeds the set range of the pressure detection module, the pressure detection module will feedback a signal to the central processing unit, and the central processing unit will control the alarm indicator light to turn on. After the staff member recognizes that the alarm indicator light is on, they promptly clean the falling stones piled up on the steel wire rope. By recording the position and frequency of the alarm indicator light turning on, they can accurately grasp the situation of the falling stones underground, thereby effectively reducing the safety hazards caused by falling stones during underground operations;

[0033] 2. In order to improve the accuracy of detection, inert gases such as nitrogen are filled into the detection airbag. The inert gas has stable chemical properties during application and can effectively reduce errors;

[0034] 3. In order to better intercept the falling stones, all the intercepting support arms are inclined. At this time, the falling stones will accumulate on the steel wire rope after falling, thus preventing the falling stones from rolling and injuring the staff;

[0035] 4. In order to improve the limiting effect of the steel wire rope, the steel wire rope is placed in the steel wire limiting groove, thereby improving the stability of the steel wire rope;

[0036] 5. In order to lock the steel wire rope in the steel wire limiting groove, after inserting the self-locking rod into the jack, the self-locking rod will contact the steel wire rope and be clamped in the steel wire limiting groove, and then the steel wire rope will be fully tightened;

[0037] 6. In order to facilitate the adjustment of the inclination angle of the intercepting support arm, the pin can be taken out. After adjusting the inclination angle of the intercepting support arm, inserting the pin into the adjustment jack can complete the adjustment of the inclination angle of the intercepting support arm, and it will be more flexible during application;

[0038] 7. In order to fix the positioning frame, first drill the drill rod into the side of the underground rock wall, then hang the positioning frame on the drill rod, and finally fix the positioning frame on the underground rock wall by bolts. Description of the Drawings

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0040] Figure 1 The three-dimensional structure diagram when the mechanism for identifying the existence of mine rockfalls using the tension force is installed on the underground rock wall.

[0041] Figure 2 The three-dimensional structure diagram of the mechanism for identifying the existence of mine rockfalls using the tension force.

[0042] Figure 3 For Figure 2 Partial three-dimensional structure diagram.

[0043] Figure 4 For showing Figure 3 The internal structure three-dimensional structure diagram.

[0044] Figure 5 For Figure 3 The three-dimensional structure diagram of the interception support arm in

[0045] Figure 6 For Figure 3 The partial enlarged view at position A in

[0046] Markings in the figure: 1 - underground rock wall; 2 - positioning frame; 3 - interception support; 4 - interception support arm; 5 - steel wire rope; 6 - detection airbag; 7 - alarm unit; 8 - steel wire limiting groove; 9 - jack; 10 - self-locking rod; 11 - pin; 12 - adjustment jack; 13 - drill rod; 14 - bolt. Detailed implementation manners

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0048] As Figures 1 to 4As shown, a mechanism for identifying the presence of rockfall in a mine by using tensioning force comprises a positioning frame 2 installed on the side of an underground stone wall 1, on which a plurality of interception supports 3 distributed in a linear array are arranged at intervals, and an outwardly extending interception arm 4 is installed in each interception support 3; a plurality of double-layer linear array steel wire ropes 5 in a tensioned state are installed on each interception arm 4, and a detection airbag 6 that contacts all the steel wire ropes 5 is also installed in each interception arm 4, and one end of the detection airbag 6 is connected to an alarm unit 7 located outside the interception arm 4; when the tensioning force of the steel wire rope 5 changes, the steel wire rope 5 can contact the detection airbag 6 and change the air pressure in the detection airbag 6. Since the steel wire rope 5 is always in conflict with the detection airbag 6, the vibration of the steel wire rope 5 will change the air pressure in the detection airbag 6. If the change of the air pressure exceeds the set range of the pressure detection module, the pressure detection module will feed back the signal to the central processing unit, and the central processing unit will control the alarm indicator light. After the staff recognizes that the alarm indicator light is on, they will promptly clean up the fallen rocks accumulated on the steel wire rope 5. By recording the position and frequency of the alarm indicator light, they can accurately grasp the rockfall situation underground, thereby effectively reducing the safety hazards caused by rockfall during underground operations.

[0049] The detection airbag 6 is filled with an inert gas, and the pressure of the inert gas is 1.2-1.5 bar. In order to improve the accuracy of the detection, an inert gas such as nitrogen is used to fill the detection airbag 6. The inert gas has stable chemical properties when used and can effectively reduce errors.

[0050] The alarm unit 7 includes a pressure detection module, a central processing unit, an alarm indicator light and a battery. The pressure detection module extends into the detection airbag 6. In order to realize the alarm, since the steel wire rope 5 always conflicts with the detection airbag 6, the steel wire rope 5 vibrates and changes the air pressure in the detection airbag 6. If the change of the air pressure exceeds the setting range of the pressure detection module, the pressure detection module will feed back the signal to the central processing unit, and the central processing unit will control the alarm indicator light to light up.

[0051] like Figures 1 to 3 As shown, all interception arms 4 are in an inclined state and have the same inclination angle, and the inclination angle between the interception arms 4 and the vertical plane is 60-70°. In order to better intercept falling rocks, all interception arms 4 are tilted, and the falling rocks will accumulate on the wire rope 5 after falling, thereby preventing the falling rocks from rolling and injuring the staff.

[0052] like Figures 4 to 5 As shown, the upper and lower surfaces of the intercepting arm 4 are provided with a plurality of steel wire limiting grooves 8 distributed in a linear array, and each steel wire limiting groove 8 accommodates only one steel wire rope 5. In order to improve the limiting effect of the steel wire rope 5, the steel wire rope 5 is placed in the steel wire limiting groove 8, thereby improving the stability of the steel wire rope 5.

[0053] As Figures 4 to 5 shown, a jacking hole 9 is provided at the end of the intercepting support arm 4, and a self-locking rod 10 that completely locks the steel wire rope 5 in the steel wire limiting groove 8 is inserted into the jacking hole 9; among them, there are two self-locking rods 10 in total, each self-locking rod 10 is an N-shaped locking rod, and each self-locking rod 10 locks all the steel wire ropes 5 located on the upper and lower surfaces of the intercepting support arm 4 at the same time. In order to realize the locking of the steel wire rope 5 in the steel wire limiting groove 8, after the self-locking rod 10 is inserted into the jacking hole 9, the self-locking rod 10 will abut against the steel wire rope 5 and be clamped in the steel wire limiting groove 8, thereby completely tensioning the steel wire rope 5.

[0054] As Figures 4 to 5 shown, the intercepting support 3 and the intercepting support arm 4 are connected by a pin 11, and the pin 11 is inserted into an adjusting jacking hole 12 provided in the intercepting support arm 4. In order to facilitate the adjustment of the inclination angle of the intercepting support arm 4, the pin 11 can be taken out. After adjusting the inclination angle of the intercepting support arm 4, the pin 11 is inserted into the adjusting jacking hole 12, and the inclination angle adjustment of the intercepting support arm 4 can be completed, and it will be more flexible in application.

[0055] As Figure 6 shown, a plurality of positioning holes are provided on the positioning frame 2, and a drill rod 13 embedded in the side surface of the underground rock wall 1 is installed in each positioning hole. One end of the drill rod 13 away from the drill bit is used to hang and fix the positioning frame 2 on the underground rock wall 1 through a mounting bolt 14. In order to realize the fixation of the positioning frame 2, first drill the drill rod 13 into the side surface of the underground rock wall 1, then hang the positioning frame 2 on the drill rod, and finally hang and fix the positioning frame 2 on the underground rock wall 1 through the bolt 14.

[0056] A method for identifying whether there is a mine rock fall by using the tension force. This method is implemented by using the mechanism for identifying whether there is a mine rock fall by using the tension force, and its operation steps are as follows:

[0057] S1. First install the positioning frame 2; drill the drill rod 13 into the side surface of the underground rock wall 1, then hang the positioning frame 2 on the drill rod, and then hang and fix the positioning frame 2 on the underground rock wall 1 through the bolt 14;

[0058] S2. Adjust the inclination angle of the intercepting support arm 4; take out the pin 11, and after adjusting the inclination angle of the intercepting support arm 4 so that the inclination angle between it and the vertical plane is 60-70°, insert the pin 11 into the adjusting jacking hole 12, and the inclination angle adjustment of the intercepting support arm 4 can be completed;

[0059] S3. Layout and install the steel wire rope 5; place the steel wire rope 5 in the steel wire limiting groove 8. After inserting the self-locking rod 10 into the jacking hole 9, as the self-locking rod 10 is continuously inserted, the self-locking rod 10 will abut against the steel wire rope 5 and be clamped in the steel wire limiting groove 8, thereby completely tensioning the steel wire rope 5;

[0060] S4. When the falling rock falls onto the steel wire rope 5, the steel wire rope 5 will vibrate slightly after being impacted by the falling rock, and the vibration will be transmitted to the two nearest interception arms 4 and then to the detection airbag 6;

[0061] S5. Since the steel wire rope 5 is always in conflict with the detection airbag 6, the vibration of the steel wire rope 5 will change the air pressure in the detection airbag 6. If the change of the air pressure exceeds the setting range of the pressure detection module, the pressure detection module will feed back the signal to the central processor, and the central processor will control the alarm indicator to light up;

[0062] S6. After the staff recognizes that the alarm indicator light is on, they promptly clean up the fallen rocks accumulated on the wire rope 5. By recording the position and frequency of the alarm indicator light, they can accurately grasp the rockfall situation in the well.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mechanism for identifying the presence of rockfall in a mine using tensioning force, comprising a positioning frame installed on the side of a rock wall underground, a plurality of interception supports arranged in a linear array at intervals on the positioning frame, and an interception arm extending outward is installed in each interception support; It is characterized in that: Each intercepting arm is equipped with multiple double-layer linear array steel ropes in a tensioned state. Each intercepting arm is also equipped with a detection airbag that contacts all the steel ropes. One end of the detection airbag is connected to an alarm unit located outside the intercepting arm. When the tension of the steel rope changes, the steel rope can contact the detection airbag and change the air pressure inside the detection airbag.

2. The mechanism for identifying the presence of mine rockfalls using tension force according to claim 1, wherein: The detection airbag is filled with an inert gas, and the pressure of the inert gas is 1.2-1.5 bar.

3. The mechanism for identifying the presence of mine rockfalls using tensile force according to claim 2, characterized in that: The alarm unit comprises a pressure detection module, a central processing unit, an alarm indicator light and a battery, and the pressure detection module extends all the way into the detection airbag.

4. The mechanism for identifying the presence of mine rockfalls using tension force according to claim 3, characterized in that: All interception arms are in an inclined state with the same inclination angle, and the inclination angle between the interception arms and the vertical plane is 60-70°.

5. The mechanism for identifying the existence of mine rockfalls using tensile force according to claim 4, characterized in that: The upper and lower surfaces of the intercepting support arm are provided with a plurality of steel wire limiting grooves distributed in a linear array, and each steel wire limiting groove can accommodate only one steel wire rope.

6. The mechanism for identifying the existence of mine rockfalls using tension force according to claim 5, characterized in that: The end of the intercepting support arm is provided with a plug hole, and a self-locking rod which completely locks the steel wire rope in the steel wire limiting groove is inserted into the plug hole.

7. The mechanism for identifying the existence of mine rockfalls using the tension force according to claim 6, wherein: There are two self-locking rods in total, each of which is an N-shaped locking rod, and each self-locking rod simultaneously locks all the steel wire ropes located above and below the intercepting support arm.

8. The mechanism for identifying the presence of mine rockfalls using tension force according to claim 7, characterized in that: The interception support is connected to the interception support arm via a latch, wherein the latch is inserted into an adjustment socket provided in the interception support arm.

9. The mechanism for identifying the existence of mine rockfalls using the tension force according to claim 8, characterized in that: The positioning frame is provided with a plurality of positioning holes, each of which is provided with a drill rod embedded in the side of the underground stone wall. The positioning frame is suspended and fixed on the underground stone wall by installing bolts at one end of the drill rod away from the drill bit.

10. A method for identifying the existence of mine rockfalls using tension force, characterized in that: The method is implemented by using the mechanism for identifying the presence of rockfall in a mine using tension force according to claim 9, and the operating steps are as follows: S1. Install the positioning frame first; embed the drill pipe into the side of the underground stone wall, then hang the positioning frame on the drill pipe, and then hang and fix the positioning frame on the underground stone wall with bolts; S2. Adjust the inclination angle of the intercepting arm; take out the latch, adjust the inclination angle of the intercepting arm to 60-70° with the vertical plane, and insert the latch into the adjustment socket to complete the inclination adjustment of the intercepting arm; S3, laying out and installing the wire rope; placing the wire rope in the wire limit groove, inserting the self-locking rod into the insertion hole, as the self-locking rod is continuously inserted, the self-locking rod will contact the wire rope and be clamped in the wire limit groove, thereby fully tensioning the wire rope; S4. When the falling rocks fall onto the wire rope, the wire rope will vibrate slightly after being impacted by the falling rocks. The vibration will be transmitted to the two nearest interception arms and then to the detection airbag. S5. Since the steel wire rope is always in conflict with the detection airbag, the vibration of the steel wire rope will change the air pressure in the detection airbag. If the change of the air pressure exceeds the setting range of the pressure detection module, the pressure detection module will feed back the signal to the central processor, and the central processor will control the alarm indicator to light up; S6. After the staff recognizes that the alarm indicator light is on, they will promptly clean up the fallen rocks accumulated on the wire rope. By recording the location and frequency of the alarm indicator light, they can accurately grasp the rockfall situation underground.

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