侵蚀-剥蚀地区库区工程地质条件调查要点及适宜性评价  

Key Points of Engineering Geological Condition Investigation and Suitability Evaluation of Reservoir in the Erosion and Suffusion Area

作　　者：陈长河 Chen Changhe(Huadong Engineering Corporation Limited,PowerChina,Hangzhou,China)

机构地区：[1]中国电建集团华东勘测设计研究院有限公司,浙江杭州

出　　处：《科学技术创新》2025年第4期201-204,共4页Scientific and Technological Innovation

摘　　要：在碎屑岩发育的侵蚀-剥蚀地区,为了消除水库浸没与淤积,库区工程地质条件调查要点是地形地貌、地层岩性和地质构造,在此基础上进行建库适宜性评价。在碎屑岩中,尽管岩性相变较大,岩性成层性较差,加上泥岩是天然的隔水层,产生库水渗漏的可能性较小,但在软、硬岩性的界面处易受构造变动影响,渗透性变大,地下水容易顺层流动,导致库水渗漏,尤其特别需要在大坝附近的软、硬岩性界面处进行灌浆处理。In the erosion and suffusion area with clasolite,key points of engineering geological condition investigation in the reservoir area are terrain,lithology and geological structure in order to eliminate immersion and sedimentation.Based on these mentioned above,suitability evaluation for reservoir construction is carried out.In the clasolite,facies change is more evident,rock layering is poorer,mudstone is a natural aquiclude,and possibility of reservoir water leakage is smaller.However,interface of soft and hard lithology is easily affected by geological structure,so that permeability may increase.Groundwater may move along the interface to result into reservoir water leakage which requires grouting treatment especially near the dam.

关 键 词：侵蚀-剥蚀地区 适宜性 库区 

分 类 号：P641[天文地球—地质矿产勘探] P56[天文地球—地质学]