三河口水库拱坝建基面选择及优化效果验证  

Optimization and Selection of Foundation Surface ofSanhekou Reservoir Arch Dam

作　　者：张兴安[1] 曾国洪 党建涛 郭喜峰[4] ZHANG Xing-an;ZENG Guo-hong;DANG Jian-tao;GUO Xi-feng(Shaanxi Provincial Institute of Water Resources and Electric Power Investigation and Design, Xi’an710054, China;Baoding Yixian Pumped Storage Co., Ltd., Baoding 074200, China;Hanjiang-to-Weihe River Valley Water Diversion Project Construction Co., Ltd., Xi’an 710100, China;Chongqing Branch, Yangtze River Scientific Research Institute, Chongqing 400026, China)

机构地区：[1]陕西省水利电力勘测设计研究院,西安710054 [2]保定易县抽水蓄能有限公司,河北保定074200 [3]陕西省引汉济渭工程建设有限公司,西安710100 [4]长江科学院重庆分院,重庆400026

出　　处：《长江科学院院报》2020年第3期114-117,124,共5页Journal of Changjiang River Scientific Research Institute

基　　金：国家重点研发计划项目(2016YFC0401801);国家自然科学基金项目(41272282);陕西省水利科技项目(2015slkj-16)。

摘　　要：针对引汉济渭工程三河口水库拱坝建基岩体,在勘察阶段利用地质钻孔进行了一系列钻孔岩体变形试验和声波测试工作,揭示了基岩变形特征,获得了钻孔岩体变形模量与声波波速的相关关系,建立了主要基于钻孔声波检测的建基面选择标准。据此建议建基面由原来的501 m高程优化到504.5 m高程。该优化方案的合理性已在坝基开挖及其变形监测中得以验证。The foundation rock mass of Sanhekou Reservoir’s arch dam was investigated according to borehole deformation tests and sonic wave tests in the geological drilling at prospecting stage.These tests revealed the deformation characteristics of foundation rock mass and obtained the correlation between borehole deformation modulus and sonic velocity.The standard for selecting the foundation excavation surface according to the drilling quick test was obtained.The elevation of foundation’s excavation surface was optimized from 501 m to 504.5 m.The rationality of this optimization scheme was verified by dam foundation excavation and deformation monitoring.

关 键 词：建基面 变形模量 波速 岩体 三河口水库 

分 类 号：TV641[水利工程—水利水电工程]