摘要
针对急倾斜煤层底板巷道受采动影响破坏严重的现象,运用数值试验方法,对煤层开采引起的顶底板岩体的应力和位移分布规律进行了研究。结果表明,采动影响区域内的岩体可划分为垮落带、剪切屈服带、卸压带和整体滑移带,明显呈区域性分布;底板巷道应布置在受采动影响最小的相对稳定带中,且与煤层底板保持一定的安全距离。研究结果对于同类地质和开采条件的矿区具有重要参考价值。
According to the phenomenon of serious damage in the floor roadway by mining effect in the steep-inclined coal seam,the law of stress and displacement distribution of roof and floor is researched by using numerical tests,Research results indicate that rock in mining effect area is divided into fall zone,shear yield zone,relieving zone and whole slippage zone,which appears regional distribution and floor roadway should be disposed on relative stable zone which is little affected by mining and keep a safe distance from floor.The results have the important reference value for the mining area in similar geological and miming conditions.
出处
《煤炭技术》
CAS
北大核心
2011年第5期67-69,共3页
Coal Technology
关键词
急倾斜煤层
岩移
底板
巷道布置
steep-inclined coal seam
rock movement
floor
roadway layout
