牙根水电站坝区松动岩体结构面发育规律探究  

Exploration on Development Regularity of Structural Plane on Loosened Rock Mass in Yagen Hydropower Station

作　　者：杨姗姗[1] 王孔伟[2] 陈旭[3] 邓成进[1] 

机构地区：[1]三峡大学,三峡库区地质灾害教育部重点实验室,湖北宜昌443002 [2]三峡大学土木与建筑学院,湖北宜昌443002 [3]华能澜沧江水电有限公司小湾水电厂,云南南涧675702

出　　处：《水电能源科学》2010年第8期52-54,169,共4页Water Resources and Power

基　　金：湖北省教育厅自然科学研究基金资助项目(D20081303,D20091302)

摘　　要：以牙根水电站为例,采用节理玫瑰花图法分区统计并对比分析了坝区左岸及右岸39个平硐2 000多条节理,认为坝区发育的大量结构面为NW向的左行扭动在岩体中派生的节理,并分析了缓倾角结构面分布特征,指出Ⅱ-Ⅲ级结构面的限制作用而导致其不稳定与连续性差、不同级别的松动岩体结构面间具有牵动制约的发育规律。Taking the Yagen Hydropower Station for an example,more than 2,000 joints in 39 adits on the left and right bank are counted and analyzed by using the method of rose diagram.According to the analysis of different areas,it can be obtained that large numbers of structural planes in dam region are the derived joints of NW left-twist.Based on the distribution characteristics of structure planes with low inclination angles,it points out that the restriction of structure planeⅡ-Ⅲ leads to the poor continuity and instability of structure planes;different ranks of structural planes on loosened rock mass affect each other and it limits the development regularity of structure plane.

关 键 词：牙根 水电站坝区 松动 岩体结构面 发育规律 探究 HYDROPOWER Station Rock Mass Structural Plane Development 节理玫瑰花图 缓倾角结构面 限制作用 对比分析 分布特征 连续性 不稳定 右岸 统计 平硐 

分 类 号：TK79[动力工程及工程热物理—流体机械及工程] TV7[水利工程—水利水电工程]