摘要
为了研究软弱围岩条件下综采工作面顶板运移规律,依据现场工程地质特征,采用数值模拟、相似材料模拟对工作面破断过程进行了研究。通过相似模拟实验,确定了直接顶与老顶的构成和工作面来压步距,分析了近浅埋煤层软弱覆岩条件下矿压演化规律。通过数值模拟,分析了软弱覆岩条件下覆岩应力分布特点和支承压力特点,为工作面支架选型、现场工程管理提供依据。
In order to study the roof movement ot tully mechamzed mining coal face under soft surrounding rock conditions, according to field engineering geological characteristics, the damage course of the coal face is researched by numerical simulation and simulate material model. With simulate material model test, the structure of immediate roof and main roof and the periodical weighting distance of coal face is determined. With numerical simulation, the stress distribution in the overburden and the support resistance characteristics under soft rock. conditions are analysed, which can provide bases for the selection of the support for coal face and engineering management in practice.
出处
《煤炭技术》
CAS
2008年第10期46-48,共3页
Coal Technology
关键词
近浅埋
软弱覆岩
综采
顶板破断
near shallow seam
soft overburden
fully mechanized mining
roof break
