12605工作面切顶卸压成巷支护技术探讨

Study on Support Technology of Roof Cutting and Pressure Relief Roadway in 12605 Face

针对官地煤矿12605工作面卸压成巷巷道变形大等问题,确定采用预裂切顶爆破技术进行切顶卸压,预裂切顶深度为7m;采用恒阻大变形锚索对巷道进行支护,并根据支护需求的不同将巷道分为超前支护区、架后临时支护区和成巷稳定区,确定了不同区域的支护参数,为类似的矿井工作面切顶卸压提供了借鉴经验。

In view of large deformation of roadway of pressure relief gateway in 12605 working face, Guandi Colliery, it is determined that the working face was subjected to pre-cracking top blasting technology for roof cutting pressure relief, and the pre-cracking cutting depth was 7 m. The roadway is supported by a constant resistance large deformation anchor cable. According to the different support requirements, the roadway is divided into the advance support area, the post-frame temporary support area and the roadway stability area, and the support parameters of different areas are determined, which provides reference experience for similar mine face shearing and pressure relief.