Coal mine rock burst seismic magnitude and seismic source location method based on time windows

Abstract

The present invention relates to a coal mine rock burst seismic magnitude and seismic source location method based on time windows. The method comprises the following steps: the step 1, constructing a bottom layer data processing module; performing classification and normalization processing of data collected by a multi-path high-frequency sensor, and converting perception data to core mine rock burst microseisms Data and GPS data; the step 2, employing the core mine rock burst seismic source location method based on the time window to calculate a long time window and a short time window through adoption of the Data and the GPS data, and calculating seismic source coordinates according to the time windows; the step 3, employing the coal mine rock burst seismic magnitude calculation method based on the time windows to calculate the average magnitude of each sensor through adoption of the seismic source coordinates and each epicentral distance R of sensors; and the step 4, performing graphical display of calculation results of coal mine rock burst seismic magnitude and seismic source location. The coal mine rock burst seismic magnitude and seismic source location method based on time windows can lay emphasis on timeliness of rock burst monitoring while ensuing the accuracy, is higher in calculation efficiency, and can obtain and display magnitude information and location information in a shorter time.

Description

technical field [0001] The invention belongs to the field of stream data processing, and in particular relates to the design of a coal mine rockburst magnitude and seismic source location method, in particular to the design of a coal mine rockburst magnitude and seismic source location method based on a time window. Background technique [0002] Rock burst is one of the most serious natural disasters in coal mines worldwide. When rock burst occurs, the roadway or coal mining face several meters to several hundred meters underground is instantly destroyed, just like a large amount of explosives are installed in the coal rock body, the coal and rock protruding are thrown out, and the thrown coal and rock are thrown out from the ground. The load ranged from a few tons to hundreds of tons, resulting in breakage of the supports and blockage of the roadway, accompanied by loud noises and rock mass vibrations. The duration of the vibrations ranged from a few seconds to tens of seco...

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Problems solved by technology

[0004] The existing rock burst monitoring methods in coal mines mainly have the following deficiencies: the electromagnetic radiation method and the charge induction monitoring technology mainly measure the stress concentration degree in the coal rock body, and the seismic CT technology uses acoustic emission to invert the stress concentration in the coal rock body. The stress distribution images of several methods are accurate, but the real-time performance is insufficient, and the methods of calculating the magnitude and locating the source are complicated; while the geoacoustic monitoring method and the microseismic monitoring method both monitor the vibration effect of coal and rock rupture, and the difference lies in their respective receivers. The frequency ranges of seismic events are different. Geophones receive high-frequency low-energy events, while microseismic ones receive low-frequency high-energy events. Both have good prospects. The monitoring accuracy of pressure disasters is low

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