大断面煤巷锚网索联合支护安全技术研究  

Bolt-mesh-anchor Combined Support Safety Technology in Large Cross Section Roadway

作　　者：满慎刚[1] 贾红果[2] 张广超[3] 

机构地区：[1]天津大学管理学院,天津300072 [2]山东科技大学矿业与安全工程学院,山东青岛266590 [3]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《山东科技大学学报（自然科学版）》2014年第3期32-37,共6页Journal of Shandong University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(51374140;51304126);国家自然科学基金青年科学基金项目(51204102)

摘　　要：结合某大断面巷道(断面面积34.125m2)的现场工程实际,采用自然平衡拱理论计算围岩塑性区破坏深度,并据此设计锚杆索支护相关技术参数。采用FLAC2D数值模拟和现场工程实测等方法验证支护的合理性和科学性,现场工程实测表明:巷道开掘50m后,巷道变形趋于稳定,顶底板累计变形量为114mm,两帮累计移近量为91mm,满足安全生产需求,巷道稳定性较好。This essay is based on the engineering practice of large cross-section roadway （cross section area is 34. 125 m2） applying the natural equilibrium arch theory to calculate the damage depth of surrounding rock mass to design of ca ble anchor supporting related technical parameters. By adopting the method of FLAC2D and field engineering meas- urement, the rationality of the supporting and scientificity were testified. The site measurement of engineering prac tice shows that： when the roadway is dug into the length of 50 m, the roadway deformation tends lo he stable. Meanwhile the deformation of roof and floor is 114 mm and the two cumulative closer amount is 91 mm. Both are in the secure range, so the stability of roadway is better supported.

关 键 词：自然平衡拱 大断面 锚网索 支护 

分 类 号：TD353.6[矿业工程—矿井建设]