坚硬顶板下采动覆岩破断规律研究  

Research on Breaking Rules of Mining Overlying Rock's under Hard Roof

作　　者：徐明初 武腾飞[2] 张亮[2] 

机构地区：[1]皖北煤电山西临汾天煜恒昇煤业有限责任公司,山西临汾041000 [2]安徽理工大学能源与安全学院,安徽淮南232001

出　　处：《煤炭技术》2015年第4期92-94,共3页Coal Technology

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.

关 键 词：坚硬顶板 分层垮落 相似材料模拟 

分 类 号：TD327.2[矿业工程—矿井建设]