盘道水库3^#坝段坝基扬压力性状分析  

Analysis on 3^# section foundation uplift pressure of Pandao dam

作　　者：毛小青[1] 梁通[1] 刘瑞宁 

机构地区：[1]青海大学水电系,青海西宁810016 [2]湟中水务局,青海湟中810012

出　　处：《青海大学学报（自然科学版）》2009年第4期5-8,37,共5页Journal of Qinghai University(Natural Science)

基　　金：青海大学中青年科学基金(2008-QG-16)

摘　　要：根据盘道大坝3#坝段观测资料对其坝基扬压力进行分析,并结合该坝段实际情况建立了扬压力数学统计模型。分析表明,帷幕前扬压力与上游库水位有显著的正相关关系,并随库水位升降而升降,扬压力在帷幕后下降迅速且年变幅很小,说明深河槽坝段渗控措施是非常有效的;河床段坝基扬压力受水位、时效等因素的影响,其中上游库水位是影响扬压力的主要因素。Based on 3^# section of Pandao dam observed data, the uplift pressure of dam foundation was analyzed. Statistics model of uplift pressure was built combined by actual conditions. It showed that uplift pressure before the impervious curtain had negative correlation with upstream water level which increased with the rise of water level. While pressure decreased rapidly with little annual variation on curtain back. Consequently, seepage control measures were very effective in deep channel dam section. Water level and time effect especially up - stream water level had a great influence on uplift pressure in river bed.

关 键 词：坝基扬压力 浆砌石坝 统计模型 盘道水库 

分 类 号：TV64[水利工程—水利水电工程]