Development of high pretensioned and intensive supporting system and its application in coal mine roadways

摘要：

In view of the features of complicated and difficult roadways, the present problems on rock bolting technique analyzed, and the high pretensioned and intensive supporting theory put forward. The initial supporting stiffness and strength of bolting system should be increased largely to control the dilatant deformation and maintain the integrity of surrounding rock. The high pretensioned and intensive bolt and cable system developed, and the mechanical properties of the bolting components obviously improved. This system been successfully applied in 1000m deep in Xinwen coal , and entries affected by intense mining activities in Luan coal. The deformation of the reduced by a big margin. This system provide an effective supporting form for complicated and difficult roadways.

关键词： roadways rock bolting high pretensioned stress intensive supporting underground applications

作者: Kang Hong-pu Lin Jian Wu Yong-zheng

作者单位: Coal Mining and Designing Branch, China Coal Research Institute, Hepingli, Chaoyang District, Beijing 100013, China

会议类型: 国际会议

会议名称: The 6th International Conference on Mining Science & Technology ICMST 2009(第六届国际矿业科学技术大会)

会议地点: 徐州

会议语种:英文

页码: 1-7

在线出版日期: 2009-10-18（万方平台首次上网日期，不代表论文的发表时间）