Working surface outburst risk evaluation index system analysis method

Abstract

The invention discloses a working surface outburst risk evaluation index system analysis method, which comprises the following steps of: acquiring gas occurrence data of a mine stope face; comprehensively analyzing the data to form risk evaluation indexes for judging working surface outburst risk, and storing the risk evaluation indexes in a criterion index library; processing the risk evaluation indexes and preset evaluation index critical values to determine the risk level of a working surface region range; and pre-warning according to the risk level. According to the method, working surface outburst risk dynamic evaluation indexes are classified into a gas index, a geology index, a stress index and an outburst prevention measure index on the basis of researching the gas occurrence rule of the mine stope face, so that the change rule of each evaluation index is grasped in time and analyzed intelligently, a working surface outburst evaluation result is formed comprehensively, outburst risk pre-warning of different levels is generated automatically, and real-time change update of each evaluation index can be predicted along with outburst; and the blindness of outburst prevention work is reduced, outburst prevention engineering cost is saved, and safe production of a mine is ensured.

Description

technical field [0001] The invention relates to a method for predicting coal and gas outburst, in particular to a method for on-site prediction of coal and gas outburst. Background technique [0002] Coal and gas outburst is an extremely complicated dynamic phenomenon. Preventing the occurrence of coal and gas outburst is an urgent technical problem that needs to be solved. Most of them are static evaluation results, and it is impossible to conduct real-time and dynamic risk evaluation and analysis of the entire process from design, excavation to mining within the working face section, and it is difficult to provide decision-making assistance for staff in a timely manner; there is a lack of effective management of basic information and data. Methods and means, the staff cannot obtain the required information conveniently and quickly; the existing data such as gas, geology, and outburst prevention measures are mostly expressed in text form, lacking effective expression and an...

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Problems solved by technology

In our country, it mainly focuses on the "two four-in-one" comprehensive prevention and control outstanding technology of "regional four-in-one as the main and local four-in-one as the supplement" and has achieved good results, but there are still difficulties in the realization process

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