摘要
结合707工作面围岩性质,分析了软岩巷道常见变形主要包括锚网索支护参数不尽合理、煤层厚度变化大、锚杆预紧力不合理等原因。结合707回风巷变形分析可知,该巷道变形主要原因在于不规则工作面、临近采空区等。
Combining with surrounding rock properties of 707 face,this paper analyzes that common deformation of soft rock roadway mainly includes unreasonable supporting parameters of cable anchor,large thickness change of coal seam,unreasonable bolt pre-tightening force.The deformation analysis of 707 return airway shows that the main reason for the roadway deformation is irregular working face and goaf approaching.
作者
孙红俊
SUN Hongjun(Shuiyu Coal Industry of Fenxi Mining Industry Group Co. , Ltd. , Xiaoyi Shanxi 032300, Chin)
出处
《山西化工》
2017年第6期132-135,共4页
Shanxi Chemical Industry
关键词
软岩巷道
变形分析
破坏机理
soft rock roadway
deformation analysis
failure mechanism
