CN115095389A - A rockburst monitoring and early warning system based on coal and rock charge signals - Google Patents

Abstract

The invention discloses a rock burst monitoring and early warning system based on coal rock charge signals, which is used for intelligently monitoring and early warning the rock burst of a coal mine, and firstly determining a roadway needing important monitoring; then installing a data acquisition module, a data monitoring module and a data transmission module in the determined roadway area; and a data processing module, a data prediction module and a data early warning module are installed on the ground. And integrating the data acquisition module, the data monitoring module, the data transmission module, the data processing module, the data prediction module and the data early warning module into the rock burst monitoring and early warning system. At present, the method adopts multivariate automatic analysis to judge the danger level of rock burst, has the capability of automatic analysis without manual intervention, has wide application range, is suitable for the development of geological structure areas in deep mines or the preparation of the prediction of rock burst in main roadways, can accurately predict the rock burst and efficiently send out early warning information, takes pressure relief measures in advance, reduces safety accidents caused by mine dynamic disasters, and has great significance in improving the safety of stoping roadways.

Description

A rockburst monitoring and early warning system based on coal and rock charge signals

technical field

The invention belongs to the technical field of mine safety, and in particular relates to a shock ground pressure monitoring and early warning system based on coal and rock charge signals.

Background technique

Rock burst refers to the dynamic phenomenon of mine characterized by violent vibration and explosive damage caused by the release of a large amount of elastic energy when the coal and rock mass is instantly unstable and damaged by external disturbances. It is a dynamic disaster accident in the process of coal mining. With the increase of mining depth and intensity of coal resources and the complication of mining conditions, the production safety challenges faced are also more severe and urgent.

Accurate prediction of rock burst is an important technical means to ensure safe mining of deep coal resources. The coal and rock failure process is accompanied by physical information such as sound, light, heat, and electromagnetism. Based on the different physical information of the coal and rock failure process, domestic and foreign experts and scholars have proposed many methods such as acoustic emission, microseismic, and electromagnetic radiation for coal mine rock burst monitoring and early warning. These methods have played a positive role in the prediction of coal mine dynamic disasters under certain conditions, but the complex geological conditions of coal mines and the difficulty of eliminating environmental noise signals lead to low prediction accuracy. In addition, the early warning is not intelligent enough. Electromagnetic radiation technology has become an important prediction method for coal rock dynamic disasters such as coal mine rock burst, coal and gas outburst. The premise and basis of the electromagnetic radiation of coal and rock is the separation of electric charges, but the separation of electric charges does not necessarily have electromagnetic radiation, indicating that the relationship between the electric charge signal and the deformation and rupture of coal and rock is more direct.

SUMMARY OF THE INVENTION

In view of the shortcomings of the prior art, the present invention proposes a rockburst monitoring and early warning system based on coal and rock charge signals. In order to achieve automatic evaluation of the risk of rock burst disasters, and automatic early warning according to the monitoring results.

A rockburst monitoring and early warning system based on coal and rock charge signals includes six modules: a data acquisition module, a data monitoring module, a data transmission module, a data processing module, a data prediction module, and an early warning module. The data acquisition module is composed of a plurality of coal and rock charge sensors, and the data monitoring module is composed of a plurality of monitoring sub-units. The output end of the coal and rock charge sensor of the data acquisition module is connected to the monitoring extension of the data monitoring module: the monitoring charge data of the data monitoring module is transmitted to the data processing module through the data transmission module; the data processing module analyzes the data and transmits it to the data prediction module; The prediction module makes judgments based on the coal rock charge critical early warning index corresponding to the preset rock burst level: the early warning module sends early warning information to the mobile phone according to the level predicted by the data prediction module.

Advantages of the present invention:

A rockburst monitoring and early warning system based on coal and rock charge signals can not only predict the rockburst level, but also evaluate the risk-relieving effect of preventive measures, so as to effectively prevent mine dynamic disasters and reduce safety accidents caused by mine dynamic disasters. , It is of great significance to improve the safety of mining tunnels.

Multivariate automatic analysis is adopted to judge the danger level of rock burst, and it has the ability of automatic analysis without manual intervention. Early warning information can be issued efficiently.

Description of drawings

FIG. 1 is an overall architecture diagram of a rockburst monitoring and early warning system based on coal and rock charge signals of the present invention.

FIG. 2 is a schematic structural diagram of a rockburst monitoring and early warning system based on coal and rock charge signals of the present invention.

Detailed ways

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

Referring to Figures 1 and 2, a rockburst monitoring and early warning system based on coal and rock charge signals specifically includes a data acquisition module, a data monitoring module, and a data transmission module connected to the ground-installed data processing module, data A prediction module and a data early warning module, wherein the data monitoring module is connected to the power supply module, and the data early warning module sends early warning information to the mobile phone.

Further, the data acquisition module adopts the coal rock charge sensor YCD5-T probe, the downhole data transmission module adopts the optical fiber cable, the power module adopts the underground 127V power supply for power supply, and the uphole data transmission adopts the Ethernet transmission data.

Among them, the specific steps are as follows:

Step 1: Determine the roadway that needs to be monitored;

Step 2, then install a data acquisition module, a data monitoring module, a data transmission module, and a power supply module in the roadway area determined in step 1, and install a data processing module, a data prediction module, and a data early warning module on the ground;

Step 3, and then predict the impact through the ground pressure monitoring and early warning system.

Further, the specific content of step 1 includes: determining the monitoring position of the roadway impact dangerous area according to the actual geological structure of the mine, the dynamic manifestation characteristics and the degree of danger, etc.

Further, the specific content of step 2 includes:

Step 2.1, install no less than 4 data acquisition module coal rock charge sensor YCD5-T probes near the monitoring area, the distance between them is not more than 20m, and the distance between the left and right in the area with obvious power and high risk is not more than 10m, each monitoring hole The depth is not less than 2m, and the aperture is not less than 42mm:

Step 2.2, monitor the change of the charge inside the coal seam in key areas through the data acquisition module and the data monitoring module, use the data transmission module to send the measurement data to the data processing module, and then transmit the data to the data prediction module after analyzing the data by the data processing module, and the data prediction module Judgment is made based on the critical warning index of coal and rock charge corresponding to the preset rock burst level. The early warning module sends early warning information to the mobile phone according to the level predicted by the data prediction module, and completes the real-time monitoring of the change of the internal charge of the coal rock.

Further, step 3 specifically includes: taking corresponding different pressure relief measures according to the early warning information, then comprehensively analyzing the geological conditions and mining factors of the area, determining the cause of rock burst, and taking corresponding measures. Safety is ensured through the ground pressure monitoring and early warning system.

The above-mentioned embodiments are used to explain the present invention, rather than limit the present invention. Within the spirit of the present invention and the protection scope of the claims, any modifications and changes made to the present invention all fall into the protection scope of the present invention.

Claims (6)

1. The rock burst monitoring and early warning system based on the coal rock charge signal is characterized by specifically comprising a data acquisition module, a data monitoring module and a data transmission module which are installed in an underground key monitoring area, wherein the data acquisition module, the data monitoring module and the data transmission module are connected to a data processing module, a data prediction module and a data early warning module which are installed on the ground, and the data monitoring module is connected with a power supply module and the data early warning module and sends early warning information to a mobile phone.

2. The system of claim 1, wherein the data acquisition module adopts a coal rock charge sensor YCD5-T probe, the downhole data transmission module adopts a fiber optic cable, the power supply module adopts a downhole 127V power supply for power supply, and the uphole data transmission adopts ethernet for data transmission.

3. A rock burst monitoring and early warning system based on a coal rock charge signal is characterized by being implemented according to the following steps:

step 1, determining a roadway needing important monitoring;

step 2, installing a data acquisition module, a data monitoring module, a data transmission module and a power supply module in the roadway area determined in the step 1, and installing a data processing module, a data prediction module and a data early warning module on the ground;

and step 3, impact prediction is carried out through an impact ground pressure monitoring and early warning system.

4. The system for monitoring and warning rock burst based on coal rock charge signals according to claim 3, wherein the concrete content of the step 1 comprises: and determining the monitoring position of the roadway impact dangerous area according to the actual geological structure, the dynamic display characteristics, the danger degree and the like of the mine.

5. The system for monitoring and early warning rock burst based on coal rock charge signals as claimed in claim 3, wherein the step 2 comprises:

step 2.1, installing not less than 4 data acquisition module coal rock charge sensor YCD5-T probes near a monitoring area, wherein the distance between the probes is not more than 20m, the distance between the probes is not more than 10m between the left and the right of the area with obvious power display and high risk degree, the depth of each monitoring hole is not less than 2m, and the aperture is not less than 42 mm;

and 2.2, monitoring the charge change in the coal bed in the key area through a data acquisition module and a data monitoring module, sending the measured data to a data processing module by adopting a data transmission module, analyzing the data by the data processing module and transmitting the data to a data prediction module, judging by the data prediction module by combining with a coal rock charge critical early warning index corresponding to a preset rock burst level, and sending early warning information to a mobile phone terminal by the early warning module according to the level predicted by the data prediction module to complete the real-time monitoring of the charge change in the coal rock.

6. The system for monitoring and early warning rock burst based on coal rock charge signals according to claim 3, wherein the step 3 specifically comprises: according to the early warning information, corresponding different pressure relief measures are taken, then geological conditions, mining factors and the like of the area are comprehensively analyzed, the cause of rock burst is determined, and safety is ensured through a rock burst monitoring and early warning system.

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