摘要
某水电站拦河枢纽工程泄洪建筑物为三孔敞开式泄洪冲砂闸,为了观测闸室基础渗流情况,在闸基沿水流方向埋设了5支渗压计,工程蓄水后闸基各渗压计的观测值持续增大。为了验证闸基渗流对实际工程安全的影响,通过收集该工程地质及基础处理相关资料,利用国产有限元分析软件AutoBank对泄洪闸建立了二维渗流有限元计算模型,对水闸基础渗流进行了理论计算,并对闸基础渗压计自安装后的实际观测资料进行分析,得到闸基各监测点渗流相对于闸前水位的时间滞后效应、扬压力折减系数以及实测扬压力分布情况,综合相关计算成果对闸基做出了渗透稳定评价。分析成果对该工程今后的实际运行管理有一定的指导意义,对同类型工程设计具有一定的参考价值。
A hydroelectric power station barrier hub project spillway building for the three-hole open flood flood floodgates,in order to observe the basic seepage of the gate room,in the direction of the floodgates along the water flow buried 5 seepage gauges,the gate base of each seepage gauge observation value continues to increase after the project storage water.In order to verify the impact of the gate-based seepage on the actual engineering safety,this paper,by collecting the geological and basic processing-related data of the project,uses the domestic finite-unit analysis software AutoBank to establish a two-dimensional seepage finite-effect calculation model of the floodgates,theoretical calculate the floodgates′basic seepage,and analyse the actual observation data since the installation of the gate-based seepage gauge,obtain the time lag effect of the floodgates relative to the water level before the gate,the coefficient of pressure reduction and the actual pressure distribution.The comprehensive and related calculation results make a permeable and stable evaluation of the gate base.The results of the analysis have a certain guiding significance to the actual operation and management of the project in the future,and have a certain reference value to the same type of engineering design.
作者
麻自学
宋海霞
张威
MA Zixue;SONG Haixia;ZHANG Wei(Beijing Huakecy Engineering Technical Co.,Ltd.,Beijing 100025,China)
出处
《水利水电技术（中英文）》
北大核心
2022年第S01期139-143,共5页
Water Resources and Hydropower Engineering
关键词
AutoBank
渗流计算
扬压力
渗透稳定
AutoBank
seepage calculation
increase the pressure
structural stability
