CN111636924A - A coal mine rock burst early warning emergency system and its use method - Google Patents

Abstract

The invention discloses a coal mine ground pressure early warning emergency system and a method for using the same, comprising a main body box, a winding assembly and an electromagnetic radiation monitor. The upper part of the main body box is threadedly connected with an upper cover, and the front outer wall of the upper cover is fixed There is a base, a display table is connected to the top of the upper cover, the winding assembly is installed on the left side of the main body box, and a connecting wire is connected above the winding assembly, and a protection assembly is installed on the left end of the connecting wire, And the left end of the protection component is connected with a drilling stress gauge, a bracket is evenly arranged on the lower outer wall of the main body box, the electromagnetic radiation monitor is arranged inside the bracket, and the electromagnetic radiation monitor is installed between adjacent ones. A distance measuring rope, a base assembly is installed at the bottom of the main body box, and a battery pack is arranged inside the main body box. The invention sets up the entire equipment system to effectively combine the electromagnetic radiation method and the coal body stress method, so that the early warning and prediction are more accurate, and the equipment layout is compact and portable.

Description

A coal mine rock burst early warning emergency system and its use method

technical field

The invention relates to the technical field of mining engineering, in particular to a coal mine rock burst early warning emergency system and a use method thereof.

Background technique

In recent years, with the gradual deepening of the mining depth of coal mines, the impact of rock bursts has become increasingly intensified, which has brought great harm to the safe production of coal mines. Solving practical problems is more difficult. Because the coal stratum is affected by geological structures such as joints, fissures and faults, the coal stratum exhibits discontinuous and anisotropic characteristics. In addition, the water and the gas existing in the coal stratum are combined with the original rock stress and tectonic stress. It has an effect on the coal stratum, making the physical and mechanical properties of the coal stratum more complex and changing in time and space. The variety and complexity of changes in coal mining have brought development to the monitoring and early warning technology of rock burst in coal mining. According to the survey results of current rockburst mines in my country, the technologies used for rockburst monitoring and early warning mainly include drilling cuttings method, electromagnetic radiation method, coal stress method, geosound monitoring and microseismic monitoring.

However, the current coal mine rockburst early warning devices on the market are less portable, inconvenient to move, and difficult to combine the electromagnetic radiation method and the coal stress method, and the borehole stress gauge used in the existing early warning devices, In use, the connecting line of the drilling stress gauge is long, which is troublesome when combing, and the connecting line may even be knotted, which affects the work efficiency, and the existing drilling stress gauge cannot fully fit the wall of the drilling hole, making it difficult to accurately The change of mine pressure can be reflected in time, and the effect of continuous monitoring of mine pressure by fixed installation in the borehole cannot be achieved. Therefore, we propose a more practical coal mine rock burst early warning and emergency system and its application. method.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a coal mine rock burst early warning emergency system and a method of using the same, which solves the problem that the existing coal mine rock burst early warning devices on the market have poor portability, are inconvenient to move, and are difficult to use with electromagnetic radiation methods. Combined with the coal body stress method, and the borehole stress gauge used in the existing early warning device, the connecting line of the borehole stress gauge is long, which is troublesome when combing, and the connecting line may even be knotted. It affects the work efficiency, and the existing borehole stress gauge cannot fully fit the borehole wall, it is difficult to accurately and timely reflect the change of the mine pressure, and it cannot achieve the effect of being fixedly installed in the borehole to continuously monitor the mine pressure. question.

In order to achieve the above purpose, the present invention provides the following technical solutions: a coal mine rock burst early warning emergency system, comprising a main body box, a winding assembly and an electromagnetic radiation monitor, wherein an upper cover is threadedly connected to the upper part of the main body box, and the upper cover is threaded. A base is fixed on the front outer wall of the upper cover, a display table is connected to the top of the upper cover, the winding assembly is installed on the left side of the main body box, and a connecting wire is connected above the winding assembly, and the left end of the connecting wire is installed There is a protection component, and the left end of the protection component is connected with a drilling strain gauge, a bracket is evenly arranged on the lower outer wall of the main body box, the electromagnetic radiation monitor is arranged inside the bracket, and the electromagnetic radiation monitor is adjacent to the A distance measuring rope is installed between, a base assembly is installed at the bottom of the main body box, and a battery pack is arranged inside the main body box.

Preferably, the rewinding assembly includes a rewinding disc, a rotating rod, a limit plate and a handle, and a rotating rod is installed in the middle position of the inside of the reeling plate, and the left and right sides of the rotating rod are connected to the limiting plate, so A handle is connected to the left side of the reel.

Preferably, the connection between the handle and the rotating rod is a fixed connection, and a rotating structure is formed between the rotating rod and the reel, and the structure of the limiting plate is a disc-shaped structure.

Preferably, the protection assembly includes a protection cylinder, an airbag cushion, a micro air pump and a trachea, and an airbag cushion is sleeved on the outer side of the protection cylinder, a micro air pump is arranged inside the protection cylinder, and the connection between the micro air pump and the airbag cushion Air pipe is installed.

Preferably, the micro air pump forms a communication structure between the air tube and the airbag cushion, and the structure of the airbag cushion is an elastic hollow structure, and the connecting wire runs through the inside of the protective cylinder.

Preferably, the inner wall of the bracket is provided with a chute, and a slider is arranged inside the chute, the connection between the slider and the electromagnetic radiation monitor is fixed connection, and the electromagnetic radiation monitor passes through the slider. A sliding structure is formed between the chute and the bracket.

Preferably, the base assembly includes a chassis, a rotating shaft, a support rod and a steel ball disk, and the outer edge of the chassis is provided with a rotating shaft, the inner side of the rotating shaft is connected with a support rod, and the inner side of the support rod is provided with a steel ball disk.

Preferably, the number of the support rods and the rotating shaft is set to 3, and the support rods and the rotating shaft are radially symmetrically distributed with respect to the center point of the chassis, and the support rod forms a rotating structure between the rotating shaft and the chassis.

Preferably, the method for using a coal mine rock burst early warning emergency system includes the following steps:

S1. First, by rotating and unfolding the support rod in the base assembly, a tripod is formed, and the whole device is stably supported on the ground;

S2. Then turn the handle in the rewinding assembly in the opposite direction, so that the connecting line is spread out on the rotating rod one by one, and the connecting line of suitable length is scattered;

S3. Then plug the borehole stress gauge into the borehole of the coal body, and start the micro air pump in the protection component, so that the airbag cushion is inflated and inflated, and is close to the inner wall of the borehole;

S4. Then slide out each electromagnetic radiation monitor from the inside of the bracket, and place the electromagnetic radiation monitor in the coal area to be measured at equal distances according to the maximum length of the ranging rope;

S5. Finally, the equipment is powered on, the borehole stress meter detects the stress value inside the borehole, and the electromagnetic radiation monitor detects the amount of electromagnetic radiation of the coal body, thereby realizing data monitoring and early warning.

Compared with the prior art, the beneficial effects of the present invention are as follows:

1. The present invention provides that the rotating rod in the rewinding assembly can be rotated relative to the reeling disc under the drive of the handle, so that the connecting wire can be stored and stored in a roll, which effectively avoids the problem that the connecting wire is long and is troublesome when combing. At the same time, it can effectively prevent the connection line from being knotted and affect the work efficiency, and it is more convenient to use;

2. The airbag cushion in the protection assembly of the present invention can be changed in size under the action of the micro air pump, so that it is suitable for the size of the drill holes of different sizes, so that the whole of the drill hole stress gauge and the protection assembly can be close to the drill hole. The inner wall can not only reflect the change of mine pressure more accurately and timely, but also achieve the effect of continuous monitoring of mine pressure by fixed installation in the borehole;

3. The present invention sets the entire early warning system to be equipped with a plurality of electromagnetic radiation monitors, and the electromagnetic radiation monitors can be arranged at equal intervals, which facilitates the detection of the electromagnetic radiation data of the coal body, so that the electromagnetic radiation data and stress data can be detected by comparing the electromagnetic radiation data and stress data. Collect comparative analysis to effectively improve the accuracy of early warning of the entire system;

4. In the present invention, the support rod in the base assembly can be rotated and folded. When the support rod is retracted, the steel ball disk touches the ground, which facilitates the movement of the entire device and is more portable. When the support rod is unfolded, the base assembly can be stabilized. Support, convenient for the placement and positioning of the entire equipment;

5. The present invention sets up the entire equipment system to effectively combine the electromagnetic radiation method and the coal stress method, making the early warning and prediction more accurate, and the equipment has a compact layout, small size, strong portability, convenient movement, and a built-in large-capacity power supply, making it Not limited by fixed power supply, it is more suitable for use in harsh environments such as mining areas.

Description of drawings

Fig. 1 is the structural representation of the present invention;

FIG. 2 is a schematic view of the front cross-sectional structure of the protection assembly of the present invention;

FIG. 3 is a schematic top view sectional structure diagram of the winding assembly of the present invention;

FIG. 4 is a schematic top view sectional structure diagram of the main box of the present invention;

FIG. 5 is a schematic view of the bottom structure of the base assembly of the present invention.

In the figure: 1. Main body box; 2. Upper cover; 3. Base; 4. Display table; 5. Rewinding assembly; 501, Rewinding disc; 502, Rod; 6. Connecting wire; 7. Protection component; 701, Protection cylinder; 702, Airbag cushion; 703, Micro air pump; 704, Trachea; 8, Drilling strain gauge; 9, Bracket; 10, Electromagnetic radiation monitor; 11, Ranging rope; 12, base assembly; 1201, chassis; 1202, shaft; 1203, strut; 1204, steel ball plate; 13, battery pack; 14, chute; 15, slider.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to Figure 1-5, an early warning emergency system for coal mine rock burst, including a main body box 1, an upper cover 2, a base 3, a display table 4, a winding assembly 5, a winding disk 501, a rotating rod 502, a limiter Plate 503, handle 504, connecting wire 6, protective assembly 7, protective cylinder 701, airbag cushion 702, micro air pump 703, trachea 704, drilling stress gauge 8, bracket 9, electromagnetic radiation monitor 10, distance measuring rope 11, The base assembly 12, the chassis 1201, the rotating shaft 1202, the support rod 1203, the steel ball disc 1204, the battery pack 13, the chute 14 and the slider 15, the upper cover 2 is threadedly connected to the upper part of the main body box 1, and the front outer wall of the upper cover 2 is fixed There is a base 3, a display table 4 is connected to the top of the upper cover 2, a winding assembly 5 is installed on the left side of the main body box 1, and a connecting wire 6 is connected above the winding assembly 5, and the left end of the connecting wire 6 is installed with a protection Assembly 7, and the left end of the protection assembly 7 is connected with a drilling stress gauge 8, the lower outer wall of the main body box 1 is evenly provided with a bracket 9, the electromagnetic radiation monitor 10 is arranged inside the bracket 9, and the electromagnetic radiation monitor 10 A distance measuring rope 11 is installed between adjacent ones, a base assembly 12 is installed at the bottom of the main body box 1 , and a battery pack 13 is arranged inside the main body box 1 , a chute 14 is opened on the inner wall of the bracket 9 , and the A sliding block 15 is arranged inside, the connection between the sliding block 15 and the electromagnetic radiation monitor 10 is fixed connection, and the electromagnetic radiation monitor 10 forms a sliding structure between the sliding block 15 and the chute 14 and the bracket 9. The entire early warning system is also equipped with a plurality of electromagnetic radiation monitors 10, and the electromagnetic radiation monitors 10 can be arranged at equal intervals to facilitate the detection of the electromagnetic radiation data of the coal, so as to collect, compare and analyze the electromagnetic radiation data and stress data. , effectively improve the accuracy of the whole system early warning;

The rewinding assembly 5 includes a rewinding disc 501, a rotating rod 502, a limit plate 503 and a handle 504, and a rotating rod 502 is installed in the middle position of the inner part of the reeling plate 501, and the left and right sides of the rotating rod 502 are connected to the limiting plate 503 , the left side of the reel 501 is connected with a handle 504, the connection between the handle 504 and the rotating rod 502 is a fixed connection, and a rotating structure is formed between the rotating rod 502 and the reel 501, and the structure of the limit plate 503 It is a disc-shaped structure, and the rotating rod 502 in the winding assembly 5 can be rotated relative to the winding disc 501 under the drive of the handle 504, so that the connecting wire 6 can be stored in a roll, which effectively avoids the long connecting wire 6. , the more troublesome problem when combing, and at the same time effectively prevent the connecting line 6 from being knotted, which affects the work efficiency, and it is more convenient to use;

The protection assembly 7 includes a protection cylinder 701, an airbag cushion 702, a micro air pump 703 and an air tube 704, and the outer side of the protection cylinder 701 is sleeved with an air bag cushion 702, and the inside of the protection cylinder 701 is provided with a micro air pump 703, and the micro air pump 703 and the air bag cushion A trachea 704 is installed at the connection of the 702, and the micro air pump 703 forms a communication structure through the trachea 704 and the airbag cushion 702, and the structure of the airbag cushion 702 is an elastic hollow structure, and the connecting wire 6 runs through the inside of the protection tube 701, and a protection is provided. The airbag cushion 702 in the assembly 7 can be changed in size under the action of the micro air pump 703, so as to make it suitable for the size of the borehole of different sizes, so that the whole of the borehole stress gauge 8 and the protection assembly 7 can be close to the inner wall of the borehole , not only can reflect the change of mine pressure more accurately and timely, but also can achieve the effect of continuous monitoring of mine pressure by fixed installation in the borehole;

The base assembly 12 includes a chassis 1201, a rotating shaft 1202, a strut 1203 and a steel ball disc 1204, and the outer edge of the chassis 1201 is mounted with a rotating shaft 1202, the inner side of the rotating shaft 1202 is connected with a strut 1203, and the inner side of the strut 1203 is provided with a steel ball disc 1204 , the number of the struts 1203 and the rotating shafts 1202 is set to 3, and the struts 1203 and the rotating shafts 1202 are radially symmetrically distributed with respect to the center point of the chassis 1201, and the struts 1203 form a rotating structure through the rotating shaft 1202 and the chassis 1201. The support rod 1203 in the base assembly 12 can be rotated and folded. When the support rod 1203 is retracted, the steel ball disc 1204 touches the ground, which facilitates the movement of the entire device and is more portable. When the support rod 1203 is unfolded, the base assembly 12 can be Stable support, convenient for the placement and positioning of the entire equipment;

A method for using a coal mine rock burst early warning emergency system includes the following steps:

S1. First, by rotating and unfolding the support rod 1203 in the base assembly 12, a tripod is formed, and the entire device is stably supported on the ground;

S2. Reversely rotate the handle 504 in the winding assembly 5, so that the connecting wire 6 is spread out on the rotating rod 502 one by one, and the connecting wire 6 of a suitable length is scattered;

S3, then plug the borehole stress gauge 8 into the borehole of the coal body, and start the micro air pump 703 in the protection assembly 7, so that the airbag cushion 702 is inflated and inflated, and is close to the inner wall of the borehole;

S4, then slide out each electromagnetic radiation monitor 10 from the inside of the bracket 9, and place the electromagnetic radiation monitor 10 in the coal body area to be measured equidistantly according to the maximum length of the ranging rope 11;

S5. Finally, the equipment is powered on, the borehole stress meter 8 detects the stress value inside the borehole, and the electromagnetic radiation monitor 10 detects the amount of electromagnetic radiation of the coal, thereby realizing data monitoring and early warning.

The whole equipment system effectively combines the electromagnetic radiation method and the coal stress method, which makes the early warning and prediction more accurate, and the equipment has a compact layout, small size, strong portability, and easy movement. It is more suitable for use in harsh environments such as mining areas.

Working principle: For this type of coal mine rock burst early warning emergency system, the main body box 1 is first pushed. Since the steel ball disc 1204 in the base assembly 12 contacts the ground at this time, the steel ball disc 1204 rolls, which drives the main body box 1 to move, and then rotates the support rod. 1203, the support rod 1203 rotates around the rotating shaft 1202, so as to unfold relative to the chassis 1201 and support it on the ground, then take out the drilling stress gauge 8 from the base 3, and then reversely rotate the handle 504 in the winding assembly 5, the handle 504 Drive the rotating rod 502 to rotate, so that the connecting wire 6 clamped in the limit plate 503 is spread out from the rotating rod 502, and protrudes from the inside of the reel 501. After the appropriate length is spread out, insert the drilling stress gauge 8 into the drilling machine. inside the hole;

At this time, the micro air pump 703 in the protection assembly 7 is activated, and the micro air pump 703 inflates the inside of the airbag cushion 702 through the trachea 704. The airbag cushion 702 is inflated to make it close to the inner wall of the borehole, and the protection cylinder 701 is used to protect the borehole stress gauge 8 At the connection point with the connecting line 6, then pull up the electromagnetic radiation monitor 10 in turn, and the electromagnetic radiation monitor 10 drives the slider 15 to slide up along the chute 14, so as to take out each electromagnetic radiation monitor 10 from the inside of the bracket 9, Place them in the coal body measurement area in turn, so that the distance measuring rope 11 is stretched and placed at an equal distance. Then, the electromagnetic radiation monitor 10 is started to measure to obtain point electromagnetic radiation data, and the borehole stress meter 8 is started to measure , the stress data is displayed on the display table 4, and finally the upper cover 2 is turned to open to expose the battery pack 13, which is convenient for maintenance.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (9)

1. The utility model provides a colliery rock burst early warning emergency system, includes main part case (1), rolling subassembly (5) and electromagnetic radiation monitor (10), its characterized in that: an upper cover (2) is connected with the upper part of the main body box (1) in a threaded manner, a base (3) is fixed on the outer wall of the front surface of the upper cover (2), the top of the upper cover (2) is connected with a display meter (4), the winding component (5) is arranged on the left side of the main body box (1), a connecting wire (6) is connected above the winding component (5), a protection component (7) is arranged at the left end of the connecting wire (6), the left end of the protection component (7) is connected with a drilling stress meter (8), the outer wall of the lower part of the main body box (1) is uniformly provided with a bracket (9), the electromagnetic radiation monitor (10) is arranged inside the bracket (9), and a distance measuring rope (11) is arranged between the adjacent electromagnetic radiation monitors (10), a base assembly (12) is mounted at the bottom of the main body case (1), and a storage battery pack (13) is arranged inside the main body case (1).

2. The coal mine rock burst early warning emergency system according to claim 1, characterized in that: winding subassembly (5) include rolling dish (501), bull stick (502), limiting plate (503) and handle (504), and the inside intermediate position of rolling dish (501) installs bull stick (502), the left and right sides of bull stick (502) all is connected with limiting plate (503), the left side of rolling dish (501) is connected with handle (504).

3. The coal mine rock burst early warning emergency system according to claim 2, characterized in that: the handle (504) is fixedly connected with the rotating rod (502), a rotating structure is formed between the rotating rod (502) and the winding disc (501), and the limiting plate (503) is of a disc-shaped structure.

4. The coal mine rock burst early warning emergency system according to claim 1, characterized in that: protection subassembly (7) have cup jointed gasbag pad (702) including a protection section of thick bamboo (701), gasbag pad (702), miniature air pump (703) and trachea (704), and the outside of a protection section of thick bamboo (701), the inside of a protection section of thick bamboo (701) is provided with miniature air pump (703), and trachea (704) are installed with the junction of gasbag pad (702) to miniature air pump (703).

5. The coal mine rock burst early warning emergency system according to claim 4, wherein: the micro air pump (703) forms a communicating structure with the air bag cushion (702) through the air pipe (704), the air bag cushion (702) is of an elastic hollow structure, and the connecting line (6) penetrates through the inside of the protection cylinder (701).

6. The coal mine rock burst early warning emergency system according to claim 1, characterized in that: the inner wall of the bracket (9) is provided with a sliding groove (14), a sliding block (15) is arranged inside the sliding groove (14), the sliding block (15) is fixedly connected with the electromagnetic radiation monitor (10), and the electromagnetic radiation monitor (10) forms a sliding structure with the bracket (9) through the sliding block (15) and the sliding groove (14).

7. The coal mine rock burst early warning emergency system according to claim 1, characterized in that: the base assembly (12) comprises a chassis (1201), a rotating shaft (1202), a support rod (1203) and a steel ball disc (1204), the rotating shaft (1202) is installed on the outer edge of the chassis (1201), the inner side of the rotating shaft (1202) is connected with the support rod (1203), and the steel ball disc (1204) is arranged on the inner side of the support rod (1203).

8. The coal mine rock burst early warning emergency system according to claim 7, wherein: the number of the supporting rods (1203) and the number of the rotating shafts (1202) are set to be 3, the supporting rods (1203) and the rotating shafts (1202) are distributed in a radiation symmetry mode about the center point of the chassis (1201), and the supporting rods (1203) form a rotating structure through the rotating shafts (1202) and the chassis (1201).

9. The coal mine rock burst early warning emergency system according to claims 1-8, characterized in that: the use method of the coal mine rock burst early warning emergency system comprises the following steps:

s1, firstly, a triangular support is formed by rotating and unfolding a support rod (1203) in the base component (12), and the whole device is stably supported on the ground;

s2, reversely rotating the handle (504) in the winding assembly (5) to enable the connecting wires (6) to be scattered on the rotating rod (502) one by one to scatter the connecting wires (6) with proper length;

s3, plugging the borehole stressometer (8) into the borehole of the coal body, and starting the micro air pump (703) in the protection assembly (7) to inflate and swell the air bag cushion (702) and cling to the inner wall of the borehole;

s4, sliding and taking out the electromagnetic radiation monitors (10) from the bracket (9), and placing the electromagnetic radiation monitors (10) in a coal body area to be measured at equal intervals according to the maximum length of the distance measuring rope (11);

s5, finally, the equipment is powered on, the borehole stressometer (8) detects the stress value in the borehole, and the electromagnetic radiation monitor (10) detects the electromagnetic radiation amount of the coal body, so that data monitoring and early warning are realized.

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