采矿与安全工程学报2017，Vol.34Issue(2)：214-220,227,8.DOI:10.13545/j.cnki.jmse.2017.02.003
高应力软岩巷道底鼓机理及控制实践
Mechanism of floor heave in the roadway with high stress and soft rock and its control practice
摘要
Abstract
To explore treatment methods for floor heave in the roadway with high stress and soft rock, with the third linked roadway of west belt conveyors main roadway in Panyidong mine as research sub-ject, and based on the investigation of its engineering geological condition and floor heave situation, the floor heave mechanism was analyzed with the software of FLAC3D5.0, and the end anchoring-grouting cable ties was developed for floor strengthening, based on which the floor heave control scheme was proposed, whose effect was verified through numerical method. This floor heave control scheme was applied to engineering practice. The results have shown that: 1) The floor heave in the third linked roadway is a kind of extruding fluidity floor heave, with the floor rising holistically under the squeezing effect of both sides; 2) High support rigidity and high extensibility have mutually constraining relation-ship, so the parameters of the end anchoring-grouting cable ties can be decided if taking both of which into account; 3) The floor strengthening would weaken squeezing effect between both sides and improve the working condition of roof-side support structures; 4) The end anchoring-grouting cable ties have good performance in controlling floor heave in roadway with high stress and soft rock, realizing full hole grouting with both high anchoring force and high extensibility.关键词
高应力软岩/挤压流动性底鼓/端锚锚索束/支护结构/数值模拟Key words
high stress and soft rock/extruding fluidity floor heave/the end anchoring-grouting cable ties/support structures/numerical simulation分类
矿业与冶金引用本文复制引用
王晓卿,阚甲广,焦建康..高应力软岩巷道底鼓机理及控制实践[J].采矿与安全工程学报,2017,34(2):214-220,227,8.基金项目
教育部科技项目创新团队项目(IRT_14R55) （IRT_14R55）
国家自然科学基金项目(U1261211) （U1261211）
江苏省基础研究计划项目(BK20151145) （BK20151145）
