Self-vibrating type micro-quake monitoring system and self-vibrating type micro-quake monitoring method

Abstract

A self-vibrating type micro-quake monitoring system comprises a ground central station, a control host computer, network switches, monitoring substations, vibration pickups and a self-vibrating source, wherein the ground central station is used for receiving data and storing the data in real time; the control host computer is used for presetting and modifying relevant parameters of monitoring indexes, receiving the data and preprocessing and analyzing the data; the network switches are used for transmitting the data in the well and above the well; the monitoring substations are used for acquiring and judging input signals, performing analog-digital conversion to the signals, amplifying signals, eliminating signal superposition and automatically recognizing the signals meeting preset parameters; the vibration pickups are used for picking up a natural cracking signal of coal and rock mass and a signal transmitted from the self-vibrating source and transmitting the signals to the monitoring substations; the self-vibrating source is used for generating an artificial P wave, correcting speed of the P wave generated by the natural cracking signal and correspondingly valuing the speeds of the P waves of the vibration pickups distributed in different areas. The self-vibration type micro-quake monitoring system is simple in structure, easy to operate, high in quake data computation precision and convenient for monitoring in large-range, long-term and dangerous conditions.

Description

technical field [0001] The invention relates to a microseismic monitoring system and method, in particular to a self-shock type microseismic monitoring system and method. Background technique [0002] The occurrence of mine rock burst disasters is directly related to the impact of coal mine mining. In order to predict and prevent the occurrence of disasters such as mine rock burst, it is inevitable for coal mining enterprises to continuously monitor the impact of coal mine mining. At present, coal mine enterprises adopt various monitoring methods, but the most important one is microseismic monitoring. Coal mining enterprises install microseismic systems in mines to monitor the frequency and amplitude of microseismic waves formed by coal and rock mass under the influence of mining, so as to achieve the purpose of predicting and preventing disasters such as rock bursts. [0003] However, the existing microseismic monitoring technology is generally a positioning technology dev...

AI Technical Summary

Problems solved by technology

As we all know, coal rock mass is a heterogeneous material with joints and cracks, and it will be damaged by force under the influence of mining, and its discontinuous heterogeneity will increase. The method of fixed wave velocity calculation , obviously does not match the essential properties of coal and rock mass, so the accuracy of the existing microseismic monitoring technology in predicting and preventing disasters such as rock bursts needs to be improved

[0004] In summary, there is no microseismic monitoring method and monitoring system in the prior art that can consider the medium properties of coal and rock mass and solve the problem of unstable P wave velocity.

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