采矿与安全工程学报2012，Vol.29Issue(2)：209-214,6.
大变形软岩顶底板煤巷锚网索联合支护研究
Bolt-Cable and Wire-Netting Combined Support Research of Large Deformation Coal Entry with Soft Roof and Floor
摘要
Abstract
The coal entry's roof and floor of Heigou Co. Ltd were soft strata. It was analyzed in theory and numerical simulated by Flac3D software of the surrounding rock weak structure deformation and bolting support mechanism that in order to resolve the serious deformation of the coal entry under shallow depth. The results show that the clamping action produced by bolting support result in the formation of arched support body of shallow rock which enhance the self-bearing capacity and integral stiffness. It is the floor corner bolts which play an important role in controlling the heave that induce floor peak stress area shift to the deep and reduce the stress-floor heave degree. The anchor cable supports reduce the tensile stress area and strata damage degree and increase the integrated stability of roof-floor seam. The flexible structure formed by steel belt and metal mesh prevent the damage develop to the deep. The combination of bolt and cable and wire-netting can achieve the effective support of the large deformation coal entry with soft roof and floor.关键词
软岩顶底板/大变形/煤巷/联合支护Key words
soft roof and floor/ large deformation/ coal entry/ combined support分类
矿业与冶金引用本文复制引用
秦广鹏,蒋金泉,孙森,夏均民..大变形软岩顶底板煤巷锚网索联合支护研究[J].采矿与安全工程学报,2012,29(2):209-214,6.基金项目
国家自然科学基金项目(50874021) （50874021）
