Construction and Application of the Evaluation System for Achieving Standards in Coal Mine Gas Drainage

Abstract

In view of the characteristics of Yanghe Coal Industry's "three-soft" thick coal seam, low permeability, complex geological structure, and high outburst risk, a gas extraction compliance evaluation system integrating extraction parameter monitoring, extraction law analysis, intelligent drilling design, online effect evaluation, and comprehensive compliance assessment has been constructed. This system forms a full-process closed-loop management and control model encompassing "design - monitoring - analysis - evaluation - assessment". The research results indicate that the prediction error for the total drilling footage of gas extraction in the 31111 working face is 7.65%, and the prediction error for the drilling footage per ton of coal is 4.6%. The system enables online evaluation of the gas extraction effect in the 31111 working face, displaying the extraction rate, residual gas content, and compliance status of each section in real time. It provides technical support and engineering demonstration for the intelligent management and control of gas extraction compliance in outburst mines.