综采工作面导硐法过顶板破碎带工程实践研究

Research on the engineering practice of fully mechanized coal mining face mining through the roof broken zone using the pilot-tunneling method

结合贺西煤矿8307综采工作面在推进过程中出现大面积冒顶、顶板超前断裂,造成工作面不能正常回采的条件,运用数值模拟方法对贺西煤矿8307综采工作面顶板的运动规律进行分析,并根据研究结果提出使用导硐法通过顶板破碎带,并提出具体支护设计。结果表明,破碎顶板得到有效控制。

Combined with the condition that appeared the large area roof tall, the roof rupture in advance in Hexi mine 8307 fully mechanized working face in the process of mining, which caused that working face can＇t be normal mining, using numerical simulation method, roof movement laws of Hexi mine 8307 fully mechanized working face were analyzed, and according to the results of the study, the pilot- tunnel method are presented to mine through the roof fracture zone, and the concrete support design was put forward, the results showed that the broken roof were effectively controlled.