摘要
以某矿井底车场巷道为例 ,通过对围岩物化分析、力学参数、地应力测试 ,现场工程地质调查及巷道破坏特征分析 ,针对该矿软岩巷道围岩变形量大和流变变形显著这两个特点 ,提出了一次支护采用强力锚喷网、二次支护采用锚注支护是适合该矿岩体特点的合理支护形式 ,并在该矿西大巷延拓及井底车场巷道、硐室修复中成功应用 ,取得了良好的技术经济效果。
The present study is focused on the roadway support in high-stress composite soft rock. This paper expounds the two main features of roadway in soft rock, i.e., great deformation of surrounding rock and remarkable rheological deformation. Furthermore, based on the analysis of physico-chemical component of surrounding rock and the situation of the damaged roadway, the method of adopting strong bolting and shotcreting mesh for the primary support and bolting and grouting for the secondary support is put forward in light of the on-the-spot investigation of stress tension, mechanical parameter and engineering geology. The application reveals the method facilitates the continuation of west main roadway and the restoration of shaft station and chambers. As a result, better techno-economic results have been achieved.
出处
《煤炭工程》
北大核心
2003年第4期21-23,共3页
Coal Engineering
关键词
高应力
复合型软岩
巷道
强力锚喷网
锚注
high stress
composite soft rock
roadway
strong force bolting and shotcreting mesh
bolting and grouting
