Observation inversion system and method for mining coal rock structure and gas changes

Abstract

The invention discloses an observation inversion system and method for a mining coal rock structure and gas changes. The system comprises four parts: a multiple parameters dynamic acquisition system,a signal transfer cable, an automatic cable collector, and a monitor host system, wherein the multiple parameters dynamic acquisition system is used for acquiring a coal rock structure, coal rock property, a crack image, drilling offset, gas concentration and gas components in a coal rock drilling hole as well as proceeding in the drilling hole, and transferring the acquired content to the monitorhost through the signal transfer cable, the monitor host collects, processes and shows multiple parameter data signals and controls a drive module of the multiple parameters dynamic acquisition system, and the automatic cable collector is used for automatically retracting the signal transfer cable. The method for the system can perform comprehensive analysis and inversion of 'point-line-area-body' on multiple parameters acquired by the system. The method can be widely used in observation and research of evolution laws of mining crack fields and gas fields in the mine gas control field.

Description

technical field [0001] The invention belongs to the field of mine gas prevention and control, and in particular relates to a mining coal rock structure and gas change observation and inversion system and method. Background technique [0002] Mastering the distribution and evolution laws of mining coal and rock fissures and gas is a key issue for mine pressure relief gas control. At present, the observation methods for the distribution of mining coal-rock fractures mainly include: borehole peeping method, borehole drainage method, and microseismic monitoring method, etc. There are few methods for observing the distribution of mining coal-rock gas. However, although the borehole peeping method can visually display the cracks, it cannot know the gas situation at the corresponding location, and there is a certain deviation between the observation results and the actual gas distribution; the borehole drainage method can only do qualitative analysis of the crack distribution, and ...

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Problems solved by technology

However, although the borehole peeping method can visually display the cracks, it cannot know the gas situation at the corresponding location, and there is a certain deviation between the observation results and the actual gas distribution; the borehole drainage method can only do qualitative analysis of the crack distribution, and cannot obtain quantitative and accurate Observation results; although microseismic monitoring can visually display the spatial distribution of fractures, its positioning accuracy is greatly affected by the geological conditions of coal and rock, and there is still a lack of detection of relevant gas parameters

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