摘要
分析了朝川矿随着开采深度的增加锚网索支护存在的问题,根据现场的调研,从矿区地质条件,围岩性质,地质力学特征等方面对巷道顶板破坏高度及两帮破坏深度进行了计算,在此基础上对现有的锚网索支护参数进行了系统优化,提出了该矿锚网索支护的设计方案.井下观测结果表明,采用新的支护方案后,巷道表面位移和顶板离层值都大大减小,有效地控制了巷道断面的强烈变形,既加快了巷道施工速度,又降低了成本,为矿井安全生产提供了保证.
Problems of bolt-mesh-anchor support with the increase of mining depth in Chapchuan colliery are analyzed. According to the field investigation, the failure height of the tunnel roof and the failure depth of the two sides are calculated based on the geological conditions, the properties of surrounding rock and the characteristic of geological mechanics. In addition, the holt-mesh-anchor support parameters are optimized and the design scheme of support is put forward. The observation results in the field show that both the tunnel surface displacement and the roof separation are greatly reduced by using the new support scheme, and the intensive deformation of tunnel cross-section is effectively controlled. By doing so, it can not only speed up the construction of the tunnel, but also reduce the cost, ensuring the safety production of the colliery.
出处
《采矿与安全工程学报》
EI
北大核心
2006年第1期95-98,共4页
Journal of Mining & Safety Engineering
关键词
锚网索支护
松动圈
组合粱
补强作用
悬吊原则
bolt-mesh-anchor support
broken rock zone
combination beam
reinforcement function
suspended principle
作者简介
李化敏（1957-），男，河南省南阳市人，教授，从事采矿工程方面的研究。
通讯作者：蔡建德，E-mail：cjd213@tom．com,Tel：0391—3987921
