大柳树水利枢纽坝区松动岩体的水力学特性  

HYDRAULIC PROPERTIES OF DYNAMO-RELAXED ROCK MASS AT SITE OF DALIUSHU DAM

作　　者：柴军瑞[1,2,3] 李守义[4] 

机构地区：[1]三峡大学土木水电学院 [2]西安理工大学水电学院西安710048 [3]四川大学水电学院成都610065 [4]西安理工大学水电学院

出　　处：《岩石力学与工程学报》2004年第10期1677-1680,共4页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金(10202015);三峡大学湖北省"楚天学者计划"特聘教授资助项目(200401);教育部留学回国人员科研启动基金(106-220331);陕西省教育厅自然科学专项研究计划(03JK098);西安理工大学科技创新研究计划(106-210303;220275)资助项目。

摘　　要：黄河大柳树水利枢纽坝区岩体大范围发生了松动,确定其水力学特性指标并进行渗流分析具有重要的现实意义。首先,根据坝区两岸众多平硐和过河平硐资料,统计出两岸和坝基岩体的优势节理裂隙组参数分布,采用等效连续介质渗流理论,求出两岸和坝基岩体的渗透系数张量;然后依据坝区左岸固结灌浆试验(包括压水试验)资料和过河平硐实测渗水量资料,对渗透系数张量进行修正;最后,进行3个重要断面的渗流分析。可以看出:坝区工程范围内岩体渗透性很强,渗透系数张量量级达10-5～10-4 m/s;绕坝渗流量大,帷幕灌浆工程量大。It is of practical value to determine the hydraulic conductivity tensors of large-scale dynamo-relaxed rock masses at site of Daliushu dam on the Yellow River and to analyze the seepage field. The dominant sets of joints or fractures and their distribution parameters in rock masses of abutments and foundation are obtained by statistics from many prospecting tunnels. Then the hydraulic conductivity tensors are calculated by means of seepage theory through equivalent continuum, and modified by the data of consolidation grouting test, including water pressure test result in the left abutment and the data of seepage discharge measured in the prospecting tunnel under the river. The analyses of seepage through three main sections are also carried out. It can be concluded that the rock mass at site of the dam has great permeability with the magnitude of 10-5-10-4 m/s, and that the quantities of seepage discharge and curtain grouting engineering should be large enough.

关 键 词：大柳树水利枢纽 渗流力学 松动岩体 渗透系数张量 灌浆试验 水力学 等效连续介质 

分 类 号：TV139.11[水利工程—水力学及河流动力学]