高地压软岩巷道控制技术

With the coal mining depth deeper, it is already close to critical depth in some coal mine, because of the complex geological structure and strong strata behaviors, roadway maintenance become difficult, the support of roadway in high strata pressure and soft rock become one of the major problems in the way of high effective production. This paper, combined with the engineering example of rise entry in 6 coal group of Qinan coal mine, put forward the principle of "one optimization and three strengthening" to control the large deformation of roadway in high strata pressure and soft rock, by using of the high strength anchor support system and dynamic reinforcement phases, the large deformable displacement of rise entry is successfully solved.