岩土工程学报Issue(8)：1532-1538,7.DOI:10.11779/CJGE201508025
冲击地压巷道围岩支护作用动力学分析
Dynamic analysis of support for surrounding rock of rockburst roadway
摘要
Abstract
A dynamic model for the support for surrounding rock of rockburst roadway is established. The overlying rock layer is simplified as the block composed of multiple mass blocks, the rock mass simplified as the rigid body, the connection between rocks simplified as the Kelvin-Voigt model, the supporting system simplified as the spring and energy dissipation damper, and the initial rock is subjected to impacting load. The supporting system is a conventional supporting system when the damping is 0. And it is an energy absorption supporting system when damping is greater than 0. The dynamic model is analyzed. The results show that the acceleration and displacement amplitude of the surrounding rock of the roadway under impact loading can be greatly reduced by enhancing support and improving supporting strength. Adding damping component in the supporting system is conducive to quelling the vibration of the surrounding rocks quickly, enhancing the anti-impact capacity of supports and improving the stability of the surrounding rocks. The high strength energy absorption support is put forward to prevent and control the rockburst roadway .关键词
冲击地压/动力学模型/围岩支护/吸能防冲Key words
rockburst/dynamic model/rock support/energy absorption and anti-impact分类
矿业与冶金引用本文复制引用
唐治,潘一山,王凯兴..冲击地压巷道围岩支护作用动力学分析[J].岩土工程学报,2015,(8):1532-1538,7.基金项目
辽宁省教育厅科技研究项目(L2015218)；国家自然科学基金青年项目 （L2015218）
