某隧道工程地质条件特征及稳定性研究  

Study on the Engineering Geological Conditions and Stability of a Tunnel

作　　者：王昭祥 WANG Zhaoxiang(The Second Geological and Mineral Exploration Institute,Bureau of Geology and Mineral Exploration and Development of Gansu Province,Lanzhou 730020,China)

机构地区：[1]甘肃省地质矿产勘查开发局第二地质矿产勘查院,甘肃兰州730020

出　　处：《有色金属设计》2022年第4期109-112,117,共5页Nonferrous Metals Design

摘　　要：拟建隧道全长约1221 m,洞体净空(宽×高)为975 cm×500 cm。隧道进、出口边坡稳定性均差,自然状态处于自稳状态,施工开挖过程,极易产生碎落、崩塌等不良地质现象。隧体为全岩隧道,围岩级别为Ⅳ-Ⅴ级,围岩整体稳定性较差—较好。通过评价,隧址区场地稳定较好,较适宜隧道修建。The total length of a proposed tunnel is about 1221 m,and the tunnel clearance(width and height)is 975×500 cm.Stability of the tunnel’s inlet and exit slopes is poor.With a natural state of self-stability,the slopes are prone to chipping and collapse in excavation and construction.The tunnel is totally made up of rock with the surrounding rock level of IV-V,and the overall stability of the surrounding rock is poor-good.Evaluation shows that the site is stable and suitable for tunnel construction.

关 键 词：隧道工程 地质条件特征 稳定性 

分 类 号：U45[建筑科学—桥梁与隧道工程]