深部易劣化硬岩巷道的岩体质量评价及支护对策研究  

Study on Rock Mass Quality Evaluation and Supporting Measures of Deep and Easily Deteriorated Hard Rock Roadway

作　　者：宋新涛 王贻明[1] 王少勇[1] 张敏哲 刘树龙 杜召龙 高杨轶 SONG Xintao;WANG Yiming;WANG Shaoyong;ZHANG Minzhe;LIU Shulong;DU Zhaolong;GAO Yangyi(School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学土木与资源工程学院,北京100083

出　　处：《金属矿山》2025年第2期64-74,共11页Metal Mine

基　　金：国家自然科学基金项目(编号:52374111)。

摘　　要：为解决深部易劣化硬岩巷道稳定性控制难题,以胶东半岛某金矿-1480 m深井的易劣化硬岩巷道为工程背景,对易风化和泥化的劣化硬岩巷道的破坏机理、质量分级和支护技术展开了研究。首先,通过室内试验和松动圈测试,总结了围岩劣化机理及巷道失稳原因。其次,采用改进的层析分析法和模糊综合评价法,构建了该金矿深部易劣化硬岩巷道的岩体质量评价模型。最后,提出了及时初喷和“锚网喷+锚索”的支护方法,通过数值模拟和现场试验验证了该方案的可行性。结果表明:易劣化硬岩巷道的失稳是围岩自身属性、围岩赋存环境及支护方案等多种因素共同作用的结果,所构建的岩体质量评价模型的评价结果与工程现状相符,提出的优化方案能够有效控制深部易劣化硬岩巷道的稳定性。To solve the problem of stability control of deep easily deteriorated hard rock roadway,a study was conducted on the failure mechanism,quality grading,and support technology of easily weathered and muddy degraded hard rock tunnels in-1480 m deep well of a gold mine in the Jiaodong Peninsula.Firstly,the degradation mechanism of surrounding rock and the reasons for roadway instability were summarized through indoor experiments and loosening circle tests.Then,the rock mass quality evaluation model of the easily deteriorated hard rock roadway in the deep part of the gold mine is constructed by using the improved chromatography analysis method and the fuzzy comprehensive evaluation method.Finally,the support method of timely initial spray and'anchor net spray+anchor cable'is proposed,and the feasibility of the scheme is verified by numerical simulation and field test.The results show that the instability of the easily deteriorated hard rock roadway is the result of the joint action of many factors,such as the properties of the surrounding rock,the occurrence environment of the surrounding rock and the support scheme.The evaluation results of the constructed rock mass quality evaluation model are consistent with the engineering status.The proposed optimization scheme can effectively control the stability of the deep easily deteriorated hard rock roadway.

关 键 词：岩石劣化 巷道支护 岩体质量评价 支护对策 

分 类 号：TD353[矿业工程—矿井建设]