摘要
In order to study stability control methods for a deep gate group under complex stresses,we conducted field investigations and analyses of reasons for damage in the Xuzhou mining district.Three reasons are proposed:deep high stress,improper roadway layout and support technology.The stability control countermeasures of the gate group consist of an intensive design technology and responding bolt-mesh-anchor truss support technology.Our research method has been applied at the -1000 m level gate group in Qishan Coal Mine.Suitable countermeasures have been tested by field monitoring.
In order to study stability control methods for a deep gate group under complex stresses, we conducted field investigations and analyses of reasons for damage in the Xuzhou mining district. Three reasons are proposed： deep high stress, improper roadway layout and support technology. The stability control countermeasures of the gate group consist of an intensive design technology and responding bolt-mesh-anchor truss support technology. Our research method has been applied at the -1000 m level gate group in Qishan Coal Mine. Suitable countermeasures have been tested by field monitoring.
基金
Projects 50490270 supported by the National Natural Science Foundation of China
Projects 2006CB202200 by the National Basic Research Program of China
Projects IRT0656 by the Innovation Term Project of the Ministry of Education of China
