关键词: 渗压系数, 地质构造, 绕坝渗流, 计算方式

Abstract: The seepage pressure coefficients at the bank block and the riverbed block of Pushihe lower reservoir dam exceed design standard. Therefore, this paper comprehensively analyzes the geological structure of site area, bypass seepage on both sides of the dam and current calculation method of seepage pressure coefficient. The analysis results show that the main reasons for excessive seepage coefficient include: (1) the underground water level on both sides is higher than the downstream water level and the elevation of joints in bedrock and (2) there are cracks in bedrock.

Key words: seepage pressure coefficient, geological structure, bypass seepage, calculation method