某坝址区层间剪切带工程地质特征研究  

On the Engineering Geological Characteristics of the Interlayer Shear Zones in a Dam Site

作　　者：李锐 李琦 张方涛 杜治洲 黄淦成 方彬 LI Rui;LI Qi;ZHANG Fangtao;DU Zhizhou;HUANG Gancheng;FANG Bin(Hubei Institute of Water Resources Survey and Design,Wuhan 430064,China;Faculty of Engineering,China University of Geosciences,Wuhan 430074,China)

机构地区：[1]湖北省水利水电规划勘测设计院,湖北武汉430064 [2]中国地质大学(武汉)工程学院,湖北武汉430074

出　　处：《水电与新能源》2022年第10期15-19,31,共6页Hydropower and New Energy

摘　　要：层间剪切带作为一种特殊的软弱结构面,因直接威胁到工程岩体稳定性,一直是工程勘察的重点之一。通过理论分析、试验和工程类比等手段,对姚家平水利枢纽坝址区具典型特征的层间剪切带进行深入研究认为,层间剪切带在各岩性分界处呈密集产出,岩层越薄,剪切带越发育,其岩屑夹泥型剪切带的工程性质要好于泥化夹层型。研究成果为各相关水工建筑物的设计提供了地质依据。As a special weak structural plane,the interlayer shear zone is one of the key issues in engineering investigation because it directly threatens the stability of engineering rock mass.The interlayer shear zones with typical characteristics in the dam site area of Yaojiaping Water Conservancy Project is studied in detail with theoretical analysis,experiments and engineering analogy.The results show that the interlayer shear zones occur densely at the lithologic boundaries.The thinner the stratum is,the more developed the shear zones are.The engineering properties of the shear zones with rock debris mixed with mud are better than that of the muddy type.The results provide useful geological basis for the design of relevant hydraulic structures.

关 键 词：层间剪切带 软弱结构面 岩体稳定性 水工建筑物 

分 类 号：TV221[水利工程—水工结构工程]