Numerical Simulation of Remote Pressure-released Gas Drainage Characteristics and Mining-induced Fracture Evolution
LIU Hongqi
LIU Jianzhuang
LI Jianmin
GENG Qingyou
MA Ning
LI Zhi
Abstract：In this paper, comparative analysis was carried out on the change rule of gas drainage parameters of every measures by taking the gas drainage in the first fully mechanized face in Zhuzhuang Mine as the example in order to understand the characteristics of gas drainage and the evolution process of the mining-induced fractures during the remote pressure-relief mining. The research results indicated that the gas drainage by burying pipes and surface well was more effective than that by crossing holes, because the crossing holes might be staggered or broken due to the roof movement, the remote fixed-point gas drainage can not be accurately achieved, the gas drainage flow and concentration of each hole were quite different, and there was a larger optimization space in the aspect of hole layout and maintenance. UDEC software was used to simulate the evolution process of the mining-induced fractures, the simulated results relatively accorded with the monitoring data of gas drainage and the weighting rule, so it can assist to find out the damage cause of the crossing hole in the roadway.
Keywords：remote pressure relief miningmining-induced fracturegas controlgas drainage by boreholegas drainage by surface wellUDEC
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 16-20 )