贺州抽水蓄能电站下库坝址区花岗岩节理裂隙特征分析OA
Analysis of joint and fissure characteristics of granite in the lower reservoir dam site area of Hezhou Pumped Storage Power Station
随着水利水电工程建设的高速发展,越来越多的水工建筑物布置在花岗岩地区.花岗岩本身不具备沉积岩产状但节理裂隙发育,在其侵入期间往往形成原生节理,受后期构造影响,产生次生节理.不同节理裂隙特征对工程的影响也不同.本文采用钻孔三维电视成像技术,从广西贺州抽水蓄能电站下库坝址区的勘探孔中获取上千组节理裂隙数据,通过统计分析,明确了坝址区花岗岩的优势结构面,并在此基础上进一步探讨了优势结构面对坝址工程开挖边坡的影响.
With the rapid development of water conservancy and hydropower projects,more and more hydraulic struc-tures are being arranged in granite areas.Granite itself does not have the occurrence of sedimentary rock,but joints and fissures are developed.During the intrusion,primary joints are often formed,and secondary joints are generated due to the influence of later tectonic movements.Different joint and fissure characteristics have varying impacts on the project.3D borehole TV imaging technology was used to obtain thousands of sets of joint and fissure data from the exploration holes in the lower reservoir dam site area of Guangxi Hezhou Pumped Storage Power Station.Through statistical analysis,the dominant discontinuities of granite in the dam site area were identified,based on which the influence of the dominant discontinuities on the excavation slope of the dam site engineering was further discussed.
刘战威;何晓萍
广西水利电力勘测设计研究院有限责任公司,南宁 530023广西水利电力勘测设计研究院有限责任公司,南宁 530023
建筑与水利
花岗岩原生节理次生节理钻孔三维电视成像仪聚类分析算法优势结构面贺州抽水蓄能电站
graniteprimary jointsecondary joint3D borehole TV imaging deviceclustering analysis algorithmdominant discontinuityHezhou Pumped Storage Power Station
《广西水利水电》 2026 (3)
4-7,4
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