Roadway support current situation of medium and small coal mine in South China and its measures

摘要

There were many small and medium coal mines in South China, and its geological conditions was very complex, so it could often found that there have large deformations during application in these coal mines and become very difficult to support.In view of the roadway deformation and control issues under complicated geological conditions, several mining area, such as Qujiang Coal Mine and Baise coal mines, geological conditions, roadway deformation characteristics of coal mines and outstanding problems of roadway support after in South China were summarized;and a series of field investigations, industrial test and supporting design research were carried out.According to the deformation characteristics of roadway surrounding rock in typical mines, industrial test of control technologies in high stress and large deformation rock, small coal pillar roadway and soft inflating half coal roadway were respectively illustrated.This study could provide theoretical and practical support in control technology for the same kind roadway, and it was of great significance to promote the development of science and technology of coal mines in South China.