采矿与安全工程学报Issue(6)：838-844,7.
覆岩结构对松散承压含水层下采煤压架突水的影响研究
Overburden structure influence to support crushing and water inrush during mining under unconsolidated confined aquifer
摘要
Abstract
In this paper, in view of the support crushing and water inrush disaster when mining under unconsolidated confined aquifer, numerical and physical simulations were used to study the influence of overburden thickness, key stratum location and structural combination characteristics, etc., on support crushing and water inrush disaster. The results show that under the remarkable load transfer faction of un-consolidated confined aquifer, support crushing and water inrush disaster is mainly related to the overbur-den structure. The thinner the thickness of bedrock is, and the thicker the first key stratum above coal seam is, the more easily the integral breakage of overburden occurs if the super-thick stratum exits within 10 times mining height distance above coal seam, which may easily induce support crushing and water in-rush disaster in coal face. Above has been validated at No.7114 and No.7112 working faces in Qidong Coal Mine. Based on the overburden structure, the dangerous area of support crushing and water inrush can be predicted before coal mining, which may provide a basis for such disaster prevention.关键词
松散承压含水层/压架突水/覆岩结构/关键层/复合破断Key words
unconsolidated confined aquifer/support crushing and water inrush/overburden structure/key stratum/compound breakage分类
矿业与冶金引用本文复制引用
王晓振,许家林,朱卫兵,郝浩..覆岩结构对松散承压含水层下采煤压架突水的影响研究[J].采矿与安全工程学报,2014,(6):838-844,7.基金项目
国家“十二五”科技支撑计划项目(2012BAK04B06)；江苏省自然科学基金项目(BK20140205)；国家自然科学基金项目(51404246) （2012BAK04B06）
