CN220170404U - Mixed colliery rock burst monitoring and early warning device - Google Patents

Abstract

The utility model is suitable for the technical field of coal mining and prevention and control equipment, and provides a hybrid coal mine rock burst monitoring and early warning device, which comprises a shell, wherein the device comprises: the winding mechanism is arranged on the shell and used for winding the built-in electric wire; the stress monitoring mechanism is electrically connected with the built-in wire and is used for extending into the rock layer to monitor stress of the rock layer; and the cloud computing module is electrically connected with the stress monitoring mechanism and is used for receiving the stress information of the rock monitored by the stress monitoring mechanism, uploading the stress information of the rock to the cloud for computing, and obtaining the real-time change condition of the stress of the monitored rock. The stress information of the rock is transmitted back to the cloud computing module in real time through the stress monitoring mechanism, and meanwhile, data are collected and analyzed at different monitoring points through the plurality of stress monitoring mechanisms, so that the monitoring efficiency for rock stress change is improved.

Description

A hybrid coal mine rock burst monitoring and early warning device

Technical field

The utility model belongs to the technical field of coal mining and prevention equipment, and particularly relates to a hybrid coal mine impact ground pressure monitoring and early warning device.

Background technique

Burst is the sudden release of energy accumulated in the coal and rock masses around mines and stopes. An explosive accident occurs in the tunnel. The generated power throws the coal and rock into the tunnel, and at the same time makes a strong sound, causing the coal and rock mass to vibrate and the coal and rock to collapse. It often causes heavy casualties and huge economic losses, including body damage, damage to supports and equipment, casualties, and collapse of some tunnels. It is one of the major disasters in coal mines in my country. The current technologies used for coal mine rock burst monitoring and early warning mainly include drill cuttings method, electromagnetic radiation method, coal stress method, geoacoustic monitoring and microseismic monitoring.

However, existing devices for detecting rock mass stress still have some shortcomings, such as the inability to detect the stress states of multiple rock masses at the same time.

Utility model content

The purpose of embodiments of the present utility model is to provide a hybrid coal mine impact ground pressure monitoring and early warning device, aiming to solve the problem that existing devices for detecting coal mine stress cannot simultaneously detect the stress states of multiple rock masses.

The embodiment of the present utility model is implemented in this way. A hybrid coal mine impact ground pressure monitoring and early warning device includes a shell. The device includes:

The rewinding mechanism is installed on the housing and is used to rewind the built-in wires;

A stress monitoring mechanism, electrically connected to the built-in wire, used to extend into the rock layer to monitor the stress of the rock layer; and

The cloud computing module is electrically connected to the stress monitoring mechanism, and is used to receive the stress information on the rock monitored by the stress monitoring mechanism, and upload the stress information on the rock to the cloud for calculation to obtain the stress on the monitored rock. Real-time changes in stress.

Further, the winding mechanism includes:

A mounting bracket that can be detachably connected to the housing;

Rotate the take-up reel connected to the mounting bracket;

Fixedly connected to the threaded groove on the circumferential surface of the take-up reel;

Built-in wires threaded in the take-up reel, the built-in wires are used to transmit the stress information on the rocks obtained by the stress monitoring mechanism back to the cloud computing module; and

The first motor used to drive the take-up reel to rotate;

The first motor is installed inside the housing, and the first motor is also provided with a switch key, and the switch key is electrically connected to the first motor.

Furthermore, the outside of the built-in wire is also wrapped with a protective sheath.

Furthermore, the stress monitoring mechanism includes:

and a base electrically connected to a built-in wire; and

A borehole pressure gauge movably connected to the base through a telescopic member;

The base is electrically connected to the infrared temperature sensor.

Furthermore, the cloud computing module includes:

Display with built-in processor; and

An alarm electrically connected to the display screen;

The processor is configured to receive the stress information on the rock transmitted by the borehole pressure gauge and the temperature information transmitted by the infrared temperature sensor.

Furthermore, the lower end of the housing is also provided with a crawler wheel and a second motor for driving the crawler wheel to rotate.

Furthermore, a third motor is movably connected below the housing through a telescopic shaft, and a roller is fixedly connected to the output end of the third motor.

A hybrid coal mine impact ground pressure monitoring and early warning device provided by the embodiment of the utility model first opens a hole in the rock to be detected, places the stress detection mechanism into the hole, and transmits it back to the cloud computing module in real time through the stress monitoring mechanism. The stress information on the rocks can be analyzed to analyze the stress on the monitored rocks within a period of time. By setting up multiple stress monitoring mechanisms, data can be collected and analyzed at different monitoring points at the same time, which improves the ability to detect changes in rock stress. Monitoring efficiency; based on the basic principles of the drill cuttings method, through a large amount of on-site monitoring data and theoretical research, the relationship between rock formation movement and supporting pressure, drilling cuttings volume and drilling stress is revealed , and the "drilling cuttings" under typical coal seam conditions are obtained. "Measure the relationship between absolute stress - relative stress", and analyze the range, intensity and changes of the stress field by real-time wireless monitoring of the change pattern of the relative stress field of the coal and rock mass in front of the mining face and the plasticization pattern of the coal seam behind the excavation head. trend to realize the danger zone and degree of risk of rock pressure .

Description of drawings

Figure 1 is a schematic structural diagram of a front view of a hybrid coal mine impact ground pressure monitoring and early warning device provided by an embodiment of the present utility model;

Figure 2 is a cross-sectional view of a protective sleeve in a hybrid coal mine impact ground pressure monitoring and early warning device provided by an embodiment of the present invention;

Figure 3 is a partial schematic diagram of the crawler wheels and rollers in a hybrid coal mine impact ground pressure monitoring and early warning device provided by an embodiment of the present invention.

In the attached picture: 1. Display screen; 2. Protective cover; 3. Infrared temperature sensor; 4. Base; 5. Take-up reel; 6. Alarm; 7. Housing; 8. Track wheel; 9. Roller; 10. Built-in wire; 11. Telescopic shaft; 12. Drilling pressure gauge.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clear, the utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.

The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

Please refer to Figure 1. As an embodiment of the present utility model, a hybrid coal mine impact ground pressure monitoring and early warning device includes a housing 7. The device includes:

The rewinding mechanism is installed on the housing 7 and is used to rewind the built-in wire 10;

The stress monitoring mechanism is electrically connected to the built-in wire 10 and is used to extend into the rock layer and perform stress monitoring on the rock layer; and

The cloud computing module is electrically connected to the stress monitoring mechanism, and is used to receive the stress information on the rock monitored by the stress monitoring mechanism, upload the stress information on the rock to the cloud for calculation, and obtain the stress on the monitored rock. Real-time changing conditions.

In actual use, first make a hole in the rock that needs to be detected, and place the stress detection mechanism into the hole. The stress information on the rock will be sent back to the cloud computing module in real time through the stress monitoring mechanism, which can analyze the stress over a period of time. The stress conditions of the monitored rocks are convenient for data statistics on the rocks at a location, so that multiple sets of data can be analyzed. In addition, this embodiment can collect data from different monitoring points simultaneously by setting up multiple stress monitoring mechanisms. And analysis improves the monitoring efficiency of rock stress changes; this utility model is based on the basic principle of the drilling cuttings method, and through a large amount of on-site monitoring data and theoretical research, reveals the relationship between rock formation movement and supporting pressure, drilling cuttings amount and drilling stress. The relationship between the cuttings amount and the stress is obtained under typical coal seam conditions. The cuttings amount and particle size composition increase with the increase of pressure . The change of the cuttings amount reflects the change of stress in front of the coal wall. The stress is large , The amount of drilling chips is large. When the coal mass transitions to the ultimate stress state, the amount of cuttings increases rapidly. At this time, the amount of cuttings is called the amount of ultimate cuttings or dangerous cuttings. Through real-time wireless monitoring of the changes in the relative stress field of the coal and rock mass in front of the mining face and the plasticization of the coal seam behind the excavation, the range , intensity and changing trend of the stress field are analyzed to realize the dangerous zone and degree of rock pressure.

Please refer to Figures 1 and 2. As a preferred embodiment of the present utility model, the winding mechanism includes:

A mounting bracket detachably connected to the housing 7;

Rotate the take-up reel 5 connected to the mounting frame;

Fixedly connected to the threaded groove on the circumferential surface of the take-up reel 5;

The built-in wire 10 is threaded in the take-up reel 5. The built-in wire 10 is used to transmit the stress information of the rock obtained by the stress monitoring mechanism back to the cloud computing module; and

The first motor used to drive the take-up reel 5 to rotate;

The first motor is installed inside the housing 7, and the first motor is also provided with a switch key, and the switch key is electrically connected to the first motor. The outside of the built-in wire 10 is also wrapped with a protective sheath 2 .

In actual use, by turning on the switch key or turning off the switch key, the first motor is driven to run or stop. When the first motor is turned on, its output shaft will drive the take-up reel 5 to rotate, and the built-in wire 10 can turn around One turn is wound on the take-up reel 5. It can be known that the take-up reel 5 is also provided with a threaded groove. The threaded groove can make the built-in wire 10 stably embedded in the threaded groove, so the built-in wire 10 can be arranged in an orderly manner. are arranged on the winding reel 5, which improves the orderliness and neatness when winding the built-in wire 10 in this embodiment, and improves the ability to prevent the protective cover 2 from tying when it is stretched or retracted. Preferably, the provision of the protective cover 2 can improve the protection capability of the built-in electric wire 10 of this embodiment.

Please refer to Figure 1. As another preferred embodiment of the present utility model, the stress monitoring mechanism includes:

The base 4 electrically connected to the built-in wire 10; and

A borehole pressure gauge 12 movably connected to the base 4 through a telescopic member;

The base 4 and the infrared temperature sensor 3 are electrically connected. In this embodiment, an infrared temperature sensor 3 is installed on a common borehole pressure gauge 12, and the infrared temperature sensor 3 is also electrically connected to the cloud computing module. Therefore, the equipment temperature and coal rock temperature can be monitored while monitoring stress data. When the temperature reaches a certain value, an alarm signal is sent, which improves the safety of this design in use; the telescopic part can drive the borehole pressure gauge 12 to move, thereby monitoring a wider range of rock conditions.

By using the borehole pressure gauge 12 to collect real-time changes in the stress of coal and rock masses in coal mines due to mining, it is a good idea to study Stope dynamic research is an important means of studying the law of stope dynamic pressure and monitoring rock shock pressure. Analyzing stress through sensor monitoring data The size, intensity and changing trend of the field can realize real-time monitoring, early warning and pre-warning of the dangerous area and degree of rock pressure. Report.

Please refer to Figure 1. As another preferred embodiment of the present invention, the cloud computing module includes:

Display 1 with built-in processor; and

An alarm 6 electrically connected to the display screen 1;

The processor is used to receive the stress information on the rock transmitted by the borehole pressure gauge 12 and the temperature information transmitted by the infrared temperature sensor 3 .

In actual use, the rock stress information transmitted by the borehole pressure gauge 12 can be received in time, and all-weather monitoring and processing can be achieved, and a super large memory stick is installed inside the processor, which can achieve long-term data storage and large capacity. .

Please refer to Figures 1 and 3. As another preferred embodiment of the present invention, the lower end of the housing 7 is also provided with a crawler wheel 8 and a second motor for driving the crawler wheel 8 to rotate. A third motor is movably connected to the bottom of the housing 7 through a telescopic shaft 11, and a roller 9 is fixedly connected to the output end of the third motor.

In actual use, when the ground on which the entire device travels is relatively soft, the crawler wheels 8 can be driven to drive the entire device to walk. When the ground is relatively hard, in order to prevent rigid contact between the crawler wheels 8 and the ground, When the surface of the track wheel 8 is damaged, the telescopic shaft 11 can be extended so that the telescopic shaft 11 drives the roller 9 equipped with tires to contact the ground, thus improving the adaptability of the entire device to different ground surfaces.

The above descriptions are only preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the present utility model. Within the protection scope of utility model.

Claims (3)

1. The utility model provides a hybrid colliery rock burst monitoring early warning device, includes casing (7), its characterized in that, the device includes:

the winding mechanism is arranged on the shell (7) and is used for winding the built-in wire (10);

the stress monitoring mechanism is electrically connected with the built-in wire (10) and is used for extending into the rock layer to monitor stress of the rock layer; and

the cloud computing module is electrically connected with the stress monitoring mechanism and is used for receiving the stress information of the rock monitored by the stress monitoring mechanism, uploading the stress information of the rock to the cloud for computing, and obtaining the real-time change condition of the stress of the monitored rock;

the winding mechanism comprises:

a mounting rack detachably connected to the housing (7);

a winding reel (5) rotatably connected to the mounting frame;

a thread groove fixedly connected to the circumferential surface of the winding reel (5);

the built-in wire (10) is arranged in the winding reel (5) in a penetrating way, and the built-in wire (10) is used for transmitting stress information of the rock acquired by the stress monitoring mechanism back to the cloud computing module; and

the first motor is used for driving the winding reel (5) to rotate;

the first motor is arranged in the shell (7), and a switch key is further arranged on the first motor and is electrically connected with the first motor;

the outer side of the built-in wire (10) is also wrapped with a layer of protective sleeve (2);

the stress monitoring mechanism includes:

a base (4) electrically connected to the built-in wire (10); and

a drilling pressure gauge (12) movably connected with the base (4) through a telescopic piece;

the base (4) is electrically connected with the infrared temperature sensor (3);

the cloud computing module includes:

a display screen (1) with a built-in processor; and

an alarm (6) electrically connected with the display screen (1);

the processor is used for receiving stress information of the rock transmitted by the drilling pressure gauge (12) and temperature information transmitted by the infrared temperature sensor (3).

2. The hybrid coal mine rock burst monitoring and early warning device according to claim 1, wherein the lower end of the shell (7) is further provided with a crawler wheel (8) and a second motor for driving the crawler wheel (8) to rotate.

3. The hybrid coal mine rock burst monitoring and early warning device according to claim 2 is characterized in that a third motor is movably connected below the shell (7) through a telescopic shaft (11), and a roller (9) is fixedly connected to the output end of the third motor.