摘要
采用相似材料模拟实验方法,针对恒癉煤业9203工作面坚硬顶板下开采的地质特点,对工作面在推进过程中的矿山压力显现规律进行研究。得出老顶是分层连续垮落,垮落步距为9.6~11.2 m,导水裂隙带发育高度51.4~65 m和回采工作面前后范围内的4个分区(即原岩应力区、应力增高区、应力降低区、应力恢复区)的分布范围,寻求工作面采场矿压显现规律和顶板覆岩运动规律。
Using similar material simulation experiment method,the rules of the mine pressure appearance in the process of working face advancing was studied in view of mining geological characteristic of hard roof on 9203 working face in hengsheng coal. The study showed that working face roof was layered continuous collapse and collapse step was between 9.6 m to 11.2 m. Also revealed that the height of the water suture zone was from 51.4 m to 65 m and the distribution range of four partitions(the original rock stress area, the stress increasing area, the stress reducing area,the stress recovery area) within the scope of working face before and after could be used to seek for the rules of the mine pressure appearance and movement rules of roof strata.
出处
《煤炭技术》
CAS
北大核心
2015年第4期92-94,共3页
Coal Technology
关键词
坚硬顶板
分层垮落
相似材料模拟
hard roof
layered collapse
similar material simulation
