张庄大坝的渗流稳定、结构稳定分析及其影响因素  

Analysis on Seepage and Structure Stability of Zhangzhuang Dam and Influence Factors Upon Them

作　　者：康迎宾[1] 李琳[1] 李博 

机构地区：[1]华北水利水电学院,河南郑州450011 [2]河南省河务局长垣河务局,河南长垣453400

出　　处：《水利与建筑工程学报》2008年第1期26-29,共4页Journal of Water Resources and Architectural Engineering

摘　　要：对张庄水库大坝的结构安全、渗流稳定性等几方面进行了分析,其中渗流场的分析采用有限单元法计算,渗透坡降采用达西定律计算得到,稳定分析运用有效应力圆弧滑裂面法计算,并比较了瑞典圆弧法和毕肖普法的差异。依据对张庄水库的实测、计算数据分析了本工程影响其渗流稳定性及结构稳定的因素,得出:虽临界水力坡降与计算出的水力坡降的比较得出渗透是稳定的,但是渗透系数较大使坝体存在潜在的渗透流量大的问题;虽计算得到的抗滑稳定安全系数大于临界值,但是实测坝体填土干密度均小于设计干密度,坝体可能产生局部不均匀沉降问题。The structure safety and seepage stability of the dam in Zhangzhuang Reservoir and analyzed. In analyzing, the finite element method is used for calculating the seepage flow field, Darcy＇s law is used for calculating the seepage gradient, and Swedish＇ s arc and Bishop＇s law are used for the stability analysis, at the same time, the differences about two methods are compared. Based on the observed data of Zhangzhuang Reservoir, the influence factors on the seepage stability and structural safety are analyzed. The results show that although the infiltration is more stable found out by comparing the critical hydraulic gradient with the real hydraulic gradient, the greater permeability coefficient would result in the greater seepage flow in the dam body, and although the calculated safety factor of stability against sliding is greater than the critical value, the measured dry density of the earth fill in the dam is less than that of design, so that the dam body could appear the partial non-uniform settlement.

关 键 词：渗流稳定 结构安全 影响因素 

分 类 号：TV641.25[水利工程—水利水电工程]