综采工作面合理支护强度计算研究

Calculation and Study of Reasonable Support Strength at Fully Mechanized Face

以某矿新开31煤层31101工作面合理支护强度为工程背景,基于"以岩层运动为中心"的实用矿山压力理论,计算直接顶和基本顶运动参数,构建工作面顶板结构模型,理论计算工作面合理支护强度。另外通过类比相似条件的22114工作面合理支护强度,确定31101工作面合理支护强度。综合2种方法确定工作面合理支护强度为1.18 MPa。

Based on support strength design at 31101 face of 31 coal seam as an engineering background, firstly calculate movement parameters of immediate roof and basic roof, then build a new model of roof structure by practical underground pressure theory. Furthermore, the analogy method have been used to confirm the reasonable support strength by comparing with 22114 working face. Finally, the results from these two analysis suggested the reasonable support strength is 1.18 MPa.