摘要
以西南某水电站为例,依据坝址区工程地质条件构建了边坡三维模型,模拟了地形地貌、岩层分级和主要地质结构面,借鉴锦屏一级等类似工程资料确定雾化雨强度和影响范围,以年均河床水位与地下水位为控制边界条件进行三维饱和非饱和降雨入渗计算。分析渗流结果表明,坡面平缓和坡脚处的压力水头明显上升,距离坝址越远雾化降雨对边坡影响越小。该方法结果合理,实用性强。
Based on geological conditions of a hydropower station dam site in the southwest region, a three-dimension al slope model is established to simulate topography, landform, rock quality classification and dominating geological struc- tural planes. The intensity and the range of the atomized rain are determined with reference to similar projects like Jinpin I hydropower station. Three dimensional saturated unsaturated infiltration is calculated by taking the riverbed average an nual water level and underground water level as the controlling boundary conditions. The analysis of the resuhs shows that the pressure head of gentle and bottom areas in the slope have an obvious rise; the regions near the dam site are less influenced by the atomized rain than the ones away from the darn site. Therefore, the proposed method is reasonable and has strong practicality.
出处
《水电能源科学》
北大核心
2011年第12期88-91,166,共5页
Water Resources and Power
基金
国家自然科学基金资助项目(50879063
50979081)
"十一五"国家科技支撑计划基金资助重大项目(2008BAB29B01)
关键词
水电站
边坡
雾化雨
三维渗流分析
hydropower station
slope
atomized rain
three-dimensional seepage analysis
