Research on process parameter optimization of irregular working face

Abstract

Abstract Based on the engineering background of 1353 working face in Daizhuang Coalmine, summarized the three main problems that exist in the mining process: (1) Conventional pressure relief means are limited; (2) Risk of impact; (3) The length of working face changes. In view of these problems, the corresponding countermeasures are put forward: (1) roof cutting and pressure releasing; (2) controlling mining speed; (3) controlling the length of stopping line. And the numerical simulation method is used to explore from the above three aspects. Through the research, it is finally determined that the 1353 working face of Daizhuang Coalmine adopts the pressure relief method of drilling on one side and cutting the roof 20m deep on the other side, and the mining speed of the working face is 3m/d and the length of the stopping line is 85m, which provides a reference for the mining of irregular working face.