供稿: 刘民东 | 时间: 2019-07-04 | 次数: |
作者:刘民东
作者单位:焦作矿务局
摘要:古汉山矿原设计为一次支护锚网喷, 二次支护钢筋混凝土碹, 为节省基建投资将原设计的二次支护改为 “预应力锚索+ 网+ 喷混凝土”. 实践证明该方法具有较好的推广应用价值, 为类似条件下大型软岩硐室支护提供了经验.
基金:河南省科技攻关项目;
分类号:TD354
Practice on the Bolt Cable Support for the Compound Soft Rock Chambers with High?stress Joint
Abstract:The original design is for the initial bolt mesh spray and the second time support with the reinforced arch.In order to save some foundamental construction fees, it has change the original design for the second time support into“pre?stress bolt cable+mesh+spray concrete”.The supporting way has provided some experiences for the large scale soft rock chamber supportings of the similia cases.