The Caving and Sliding Control of Surrounding Rocks on Large Coal Roadways Affected by Abutment Pressure
For the caving and sliding control of roadways with large cross-section, thick mudstone roof and abutment pressure influence, the cable truss system is proposed and its support mechanism is thoroughly analyzed in this paper. Furthermore, according to the geometric size and ground pressure conditions on field coal roadways No. 101, No. 102 and No. 103 in Xinyuan Coal Mine, three types of cable truss support systems are designed for obtaining the optimum cable truss support system. Then the corresponding parameters for each support design are determined by use of the numerical simulation method, and three kinds of support systems are put into practice. The field observation results show that roof should be effectively controlled by the normal cable truss structure consisting of two long cables and one connector, and both coal sides can be protected by the simplified cable truss structure composed of two short cables and one channel bar. Finally, the optimal support system is gotten which is much better than the other two support designs in rock deformation control effect and economic profits.
Cable truss system numerical simulation coal roadway abutment pressure
Jianping Li Fulian He Hong Yan Hongjun Jiang
College of Resources & Safety Engineering, China University of Mining & Technology (Beijing), Beijin College of Resources & Safety Engineering, China University of Mining & Technology (Beijing), Beijin
国际会议
The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)
北京
英文
1118-1125
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）