深部矿井软岩回采巷道围岩松动圈厚度的确定与控制

Thickness Determination and Controlling of Loose Surrounding Rock Zone of Soft-rock Roadway in Deep Mine

软岩支护是巷道支护的一大难题,随着开采深度的增加和综放技术的应用,软岩回采巷道受采动压力和围岩压力的影响增大,围岩变形量大,控制十分困难。通过对围岩压力和松动圈分析,提出了松动圈厚度的确定方法和采用锚杆支护控制软岩回采巷道的技术措施。

The support of soft-rock roadway is a difficult problem in the field of roadway support.With the growth of mining depth and the application of top coal caving technology,the influence of mining-induced pressure and surrounding rock pressure impact on the mining roadway in soft rock increases,the deformation of mining roadway is big and is very difficult to control.Based on the analysis on surrounding rock pressure and loose surrounding rock zone of mining roadway,a method to determine the thickness of loose...