College of Geosciences and Surveying Engineering, China University of Mining and Technology (Beiing)

针对国内煤矿井下开采过程中发生类泥石流灾害事故的问题,在开展调查与统计、事故资料收集与现场勘察基础上,结合具体矿井,初步分析了煤矿井下类泥石流灾害的形成要素与发育规律,并提出相应的防治措施。研究表明:煤矿井下类泥石流灾害的发生一般经历孕育期、暴发期和余发期3个阶段。因断层作用和巷道开拓效应的共同作用产生了叠加破碎带,使含水层的导通增加了水源,巷道上方发育叠加破碎带形成了泥石流产生的地形要素,巷道开拓引起的采动效应诱发了煤矿井下泥石流的发生。井下类泥石流的产生是断层作用、含水层、特殊的地形及巷道开拓这4个因素共同作用的结果。

According to problem that the similar debris flow disasters and accidents happened frequently in the process of mining in China, on the basis of investig ation and statistics, accident data collection and analysis, laboratory studies and the exploration of field, combined with specific mine, the paper analyzed formation fact ors and development rules of similar debris flow disasters that happened in the process of mining and put forward the corresponding prevention measures. The results showed that the similar debris flow under coal mine generally experienced three stages: incubation period, the outbreak period and after outbreak period. The superposi tion fracture zone caused by the combination of riting and looseness due to roadway excavation, water source increased owing to aquifer connection. The essential ter rain factor of the occurrence of debris flow- -the superposition fracture zone formed above the roadway, and the mining effect aroused from roadway excavation. Rifting, aquifer, special terrain and roadway excavation were four essential elements of forming debris flow.