青海省黑泉水库混凝土面板坝的工程地质问题与工程处理措施

ENGINEERING-GEOLOGICAL PROBLEMS OF CONCRETE FACE-PLATE DAM OF HEIQUAN RESERVOIR AND MEASURES FOR ENGINEERING TREATMENT IN QINGHAI PROVINCE

黑泉混凝土面板坝高 1 2 3.5 0m ,位居中国已建成的混凝土面板坝第四。坝址地形破碎 ,构造发育 ,工程地质条件复杂 ,河床第四纪砂卵砾石层存在不利于坝体稳定和变形的夹层 ,大坝设计采取了一些独具特色的结构措施 ,较好地适应了特殊的地质条件。本文重点分析了大坝的工程地质条件及相应的工程处理措施。

The concrete face-plate dam of Heiquan Reservoir is 123.50 m high, the 4 th built high concrete face-plate dam in China. The landform at the dam site has been broken, the structures are developed, and the engineering-geological conditions are complex. The existence of Quaternary sand-gravel beds on the riverbed is unfavorable for the stability of the dam body. Thus, some specific structural measures were taken in design of the dam and well satisfied the specific geological conditions. This paper analyzes the engineering-geological conditions and the relevant engineering treatment measures.