Research on Determination Method for Early Warning Indicators of Coal and Gas Outburst Based on Gas Emission Characteristics in Wangjiazhai Coal Mine
TAN Guowen
Abstract：The early warning of coal and gas outburst based on the gas emission characteristics is a feasible and effective outburst prediction method, its key is to determine reasonable and reliable early warning indicators and critical value of outbursts. In this paper, contrast analysis was made on a larger number of field data and all calculated results of the early warning indicators based on the gas emission characteristics according to the actual characteristics of coal and gas outbursts and the geological conditions of coal-bed gas in Wangjiazhai Coal Mine and by using the “list method”, “concept of critical region”,“three-rate method” and so on, the early outburst warning indicators and critical values conforming to the actual gas emission characteristics in Wangjiazhai Coal Mine were determined. The site inspection and application showed that the determined early warning indicators were reasonable and reliable, can accurately and timely reflect the outburst hazard in the working face and be used as an effective auxiliary analysis tool for coal and gas outburst prediction in coal mines.
Keywords：gas emission characteristicscoal and gas outburstearly warning indicatorcontinuous early warningnon-contact prediction
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 34-37 )