文章摘要
陈训源,程小勇.贵州上寨水库坝基岩体工程地质条件分析与评价[J].广东水利水电,2018,(9):61-67
贵州上寨水库坝基岩体工程地质条件分析与评价
Analysis and Evaluation of Engineering Geologic Conditions of Dam Base Rocks on Shangzhai Reservoir of Guizhou Province
投稿时间:2018-06-20  最后修改时间:2018-07-10
DOI:
中文关键词: 混凝土面板堆石坝  坝基岩体  白云岩  地质构造发育  工程地质条件评价
英文关键词: concrete face rockfill dam  dam-base rock mass  Dolomite  geological structural development  evaluation of engineering geological conditions
基金项目:
作者单位
陈训源 广东省水利电力勘测设计研究院,广东 广州 510170 
程小勇 广东省水利电力勘测设计研究院,广东 广州 510170 
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中文摘要:
      上寨水库位于贵州省麻江县,为中型面板堆石坝水库,破碎,风化差异突出,地质构造及节理裂隙发育,地质条件极其复杂,因此,准确查明坝基岩体的地质条件成为该工程顺利建成的一大关键。该文结合地质测绘、现场地质勘探、现场原位测试、室内试验等一系列成果,从坝址区的地形地貌、地层岩性、风化特征、地质构造及节理裂隙、岩溶发育情况等方面进行分析阐述,同时结合工程经验,提出坝基岩体物理力学参数建议值,同时对大坝的建基面位置、承载力与变形、抗滑稳定性、渗漏、抗冲刷等5个方面进行了评价,重点对可能出现的地质问题提出了合理的建议,为后期设计施工提供地质依据,也可为同类堆石坝工程提供借鉴。
英文摘要:
      Located in Majiang County, Guizhou Province, Shangzhai Reservoir is a medium-sized plate stone-fill dam reservoir with a normal water level of 676m and reservoir capacity of 1 283 m3. The dam foundation rock mass is with upper dolomite of Cambrian stone and cold water formation(〖XCC.TIF;%90%90,JZ〗s2), fine-crystalline-crystalline structure, and thin-thin-thin-layered structure. The stratum inclination is less than 15°. And it has some bad geological phenomena such as broken rock mass, distinct weathering differences, joint fissures and complex geological conditions, therefore, finding out the geological conditions is a key to a successful construction. . Based on the results of geological mapping, site geological exploration, site in situ testing and indoor testing, this paper analyzes and elaborates the geomorphology, strata lithology, weathering characteristics, geological structure, joint fracture and Karst development in the dam site area, and puts forward the recommended values of physical and mechanical parameters of the dam foundation rock mass. At the same time, the location, bearing capacity and deformation, anti-slip stability, leakage and anti-scour of the dam foundation surface are evaluated. It is also hoped to provide a reference for similar rockfill dam projects.
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