Testing Study on Gas Distributing in Goaf of Easy Spontaneous Combustion Coal Mine by Utilizing Gas Drainage Hole
According to the mining plan in the 416 mining face in Chen Jiashan coal mine, an industrial experiment on the distribution of gas gushes in goal has been made in the paper. There are 5 sets of testing equipment which have been used in 5 drilling sites joint to gas drainage pipeline. By analyzing the gases collected in the pipeline, the CH4 consistence has been gained. The relationship of CH4 consistence in drilling site along with the distance away from work face is studied. By drawing the curve between CH4 consistence and the distance, the law of gas changing and other characteristics such as a height peak and a low peak appeared in the curve have been discovered. It has been found through farther analysis that the gas gushes is related to gob leakage, which conduced the CH4 consistance changing to big to height peak, the gas gushes is related to drainage-.hole leakage, which conduced the CI-~ consistence changing to small, and the gas gushes is related to goaf spontaneous combustion, which conduced the CH4 consistence changing to big from the low peak firstly. Finally, the important result about the boundary leakage in goal and the position for three zones of ceal spontaneous combustion have been brought out. And which is worthy utilizing on mine disaster prevention.
distribution of CH4 consistence gas gushes three zones in goaf gas drainage system
WEI Yinshang FAN Jingdao ZHANG Jingzhao WU Xiaofan
School of Energy Engineering,Xian University of Science and Technology,Xian 710054,Shaanxi,China Huang-ling Mining Group Ltd.,Diantu,Huangling County 727300,Shaanxi,China
国际会议
The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)
北京
英文
1389-1393
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）