摘要
兴隆庄煤矿主采煤层为山西组3#煤层,平均厚度8.5m,为Ⅱ类自燃煤层。矿井分层开采时期,共发生自燃隐患20余次,自上世纪90年代开始,逐步推广应用综采放顶煤无煤柱一次采全高技术,提高了资源回收率,实现了高产高效集约化生产,但两端头顶煤放出率低,采空区存在遗煤,自然发火风险较大。随着近年来开采强度的增大,通风系统相对复杂,大面积采空区连成一片,漏风条件充足,大大增加了防治煤层自然发火的技术难度。
Xinglongzhuang Coal Mine,the main coal seam is Shanxi Group 3#coal seam,average thickness 8.5 m,is a ClassⅡspontaneous combustion coal seam.Since the 1990s,the technology of fully mechanized top-coal caving mining without coal pillar is gradually popularized and applied,which improves the recovery rate of resources and realizes high-yield,high-efficiency and intensive production However,the top-coal caving rate at both ends is low,and there is coal remaining in Goaf,so the risk of spontaneous combustion is high.With the increase of mining intensity in recent years,the ventilation system is relatively complex,large Goaf is connected into one,and the air leakage condition is sufficient,which greatly increases the technical difficulty of preventing coal seam spontaneous combustion.
作者
刘星乐
上官良良
李志勇
翟智哲
李惠
LIU Xingle;SHANGGUAN Liangliang;LI Zhiyong;ZHAI Zhizhe;LI Hui(Xinglongzhuang Mine,Yanzhou Coal Mining Group Corporation Ltd.,Yanzhou 272102,China)
出处
《煤矿现代化》
2020年第5期48-51,共4页
Coal Mine Modernization
关键词
特厚煤层
长时间封闭
综合防灭火
安全
extra-thick coal seam
long-term sealing
comprehensive fire prevention and control
safety
