Study on Technology of Far-Distance Protective Coal Seam Mining and Pressure-relief Gas Extraction
Pingdingshan mining area has D, E, F three groups of coal, and they all soft and outburst coal seam, and the relative distance between they is up to 28-35 and 45-50. It is the most effective and economic regional gas control measures to take protective coal seam mining. The stress, deformation, and movement of upper coal & rock seams are simulated by the UDEC with the down protective coal seam exploited. The results show that the stress can be relieved greatly, and the deformation regions in the protected coals seam shows M-shaped form, symmetrically distributed in two sides. The stable dilation rate is up to 4.5％0, and the permeability enhances greatly, though the distance and relative distance between the three groups of coal seam are every far without precedent at home and aboard. So changing mining layout at present to take the method of protective coal seam mining, and reasonable gas extraction measures, have an important role in regional control for coal & gas outburst and rock burst, and realizing the safe and high-efficient exploitation of coal and gas successfully.
far distance protected coal seam mining numerieal simulation pressure-relief gas gas extraction
XIONG Zuqiang LI Huamin YUAN Ce
School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo 454003,Henan,China School of Institute of Resources & Environment,Henan Polytechnic University,Jiaozuo 454003,Henan,Chi
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
1470-1473
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）