古贤水利工程坝址区剪切带渗透变形特性试验研究  

Experimental Study on Seepage Deformation Characteristics of Shear Zones of Dam Site of Guxian Hydro⁃Junction

作　　者：赵永胜 王新建[1] 李金都 焦小超 高慧民 刘艳 ZHAO Yongsheng;WANG Xinjian;LI Jindu;JIAO Xiaochao;GAO Huimin;LIU Yan(North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China)

机构地区：[1]华北水利水电大学,河南郑州450046 [2]黄河勘测规划设计研究院有限公司,河南郑州450003

出　　处：《人民黄河》2022年第12期106-111,共6页Yellow River

摘　　要：针对黄河古贤水利工程坝址区存在的剪切带,开展原位和室内原状样渗透变形试验,对剪切带渗透变形及破坏特性进行研究。结果表明:原位渗透变形破坏形式都表现为一定的水力劈裂和软弱夹层、泥化带的细颗粒流失和挤出破坏,综合判定为集中冲刷破坏。就试验过程中剪切带整体破坏程度而言,剪切带中劈理带(剪切破碎带)渗透破坏程度较低;泥化带(泥化夹层)部位渗透破坏程度较高,对整体结构影响较大。For the existing shear zone in the dam site area of Guxian Hydro⁃Junction in the Yellow River,the seepage deformation and failure characteristics of the shear zone were studied by the in⁃situ and indoor seepage deformation tests.The test results are as follows:in⁃situ infil⁃tration deformation damage is all manifested in the form of some hydraulic cleavage and fine particle loss and extrusion damage in the soft and weak intercalated layer and mudded intercalation,the combined assessment is that the damage is concentrated erosion damage.In terms of the overall failure degree of the shear belt during the test,the osmotic failure degree of the cleavage zone(shear fracture zone)in the shear belt is lower,and the osmotic failure degree of the argillization zone(mudded intercalation)is higher,which has a greater influence to the overall structure.

关 键 词：剪切带 泥化夹层 渗透变形 临界坡降 渗透破坏 古贤水利工程 

分 类 号：TV223.1[水利工程—水工结构工程] TV882.1