A coal mine rock burst joint monitoring and early warning system and its monitoring and early warning method

Abstract

The invention discloses a coal mine rock burst united monitoring and early warning system and a monitoring and early warning method thereof. An electromagnetic radiation monitor, a rock noise monitor and a microquake monitor are arranged on monitoring points of a coal mine excavation roadway or a transportation roadway of a coal mining working face, an air return way of the coal mining working face and monitoring points of the coal mining working face, a control receiver is arranged on a mining roadway, a ground monitoring system station is installed on the ground, the electromagnetic radiation monitor, the rock noise monitor and the microquake monitor are all connected with the control receiver, and the control receiver is connected with the ground monitoring system station. Three kinds of monitoring are integrated and interact and supplement in the monitoring process, systematic advantages are used for conducting system analysis on the monitoring result, the high-quality monitoring and early warning effect is guaranteed, the precise and scientific monitoring and early warning method is provided, and coal mine safety production is protected against damage of rock burst.

Description

technical field [0001] The invention relates to the technical field of mining engineering, in particular to a coal mine rockburst joint monitoring and early warning system and a monitoring and early warning method thereof. Background technique [0002] In recent years, with the gradual deepening of coal mine mining depth, the impact of rock burst is also increasing, which brings great harm to the safety of coal mine production. The occurrence of rock burst is relatively complicated, and it is difficult to solve practical problems with pure mathematical analysis and rock mechanics theory. Because coal strata are affected by geological structures such as joints, fissures, and faults, coal strata show discontinuity and anisotropy, and water and gas present in coal strata are combined with original rock stress and tectonic stress. It has an effect on the coal and rock formations, making the physical and mechanical properties of the coal and rock formations more complex, constan...

AI Technical Summary

Problems solved by technology

However, under the influence of complex geological conditions and changing external environment, the single monitoring and early warning method has low accuracy and data distortion during the monitoring process, and even leads to monitoring failure in some specific environments, and cannot monitor and early warning impact well. ground pressure

For example, a single electromagnetic radiation monitoring and early warning technology is used to monitor and early warning of rock burst, just as we lose our ears and hands and only use our eyes to see. We can accurately judge simple things through our eyes, but in complex things Under the interference of conditions and external factors, our single means and functions sometimes fail to achieve the expected results. As the saying goes, seeing is not necessarily believing

In the same way, a single ground sound monitoring and early warning or microseismic monitoring and early warning, etc., are like our ears and sense of touch. When they act alone, what they reflect is not the real process of changes in things.

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