摘要
蒲石河抽水蓄能电站下库坝岸坡坝段、河床坝段部分扬压力测孔渗压系数超过设计标准。对此,综合分析了下库坝坝址区地质构造、两岸绕坝渗流及目前渗压系数计算方法。结果表明,两岸地下水高于下游水位和基岩接缝高程及基岩裂隙是导致大坝渗压系数超标的主要原因。
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 seep?age pressure coefficient.The analysis results show that the main reasons for excessive seepage coeffi?cient 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.
作者
张凤芹
王千
ZHANG Fengqin;WANG Qian(Fengman Hydropower Plant;不详)
出处
《大坝与安全》
2020年第1期42-44,共3页
Dam & Safety
关键词
渗压系数
地质构造
绕坝渗流
计算方式
seepage pressure coefficient
geological structure
bypass seepage
calculation method
