Research on supporting technology of wind drift at B103W01 Workface in ShajiHai Coal Mine

摘要

The deformation and failure problems in soft rock supporting cannot be effectively controlled with conventional methods. This paper put forward the coupling support technologies by the use of large deformation constant-resistance bolt, large deformation constant-resistance cable and bottom-grouting pipes, with the analysis of deformation and failure reseasons, combing with verifications in field-test project at B103W01 working face, State Grid Energy abundance Coal Limited Shajihai Coal Mine. It also provides the reference for the tunnels supporting under similar conditions. The problem of soft rock is one of the hard problems affecting mine production. Because of a result of soft rock roadway support of increasing difficulty and extent of the damage [1-6], the conventional methods of mine supporting can not effectively control the deformation and failure, which has brought great difficulties to the coal mine production safety. Therefore, the soft rock roadway issue has become urgent. For the supporting technology of wind drift mine at B103W01 workface in ShajiHai Coal Mine, the author puts forward the coupling support technologies by the use of large deformation constant-resistance bolt, large deformation constant-resistance cable and bottom-grouting pipes.