【摘要】 四川省目前已建成各类水库近7000座。"5.12"汶川大地震对四川的水利工程造成了很大的灾害。根据四川震损水库基本情况,以苍溪县红旗水库的典型震损土石坝为例,对其进行除险加固分析。分析表明,整治前校核、设计、正常水位降至死水位的3种工况坝坡稳定最小安全系数仅为1.098~1.145,小于规范要求值1.15~1.25,经整治后提高到1.262~1.698,满足了要求,最后对整治后的大坝进行地震工况坝坡稳定计算,其抗震稳定安全系数为1.451~1.654,满足规范的要求。研究为震损水库的整治和处理提供了借鉴。更多还原

【Abstract】 Wenchuan Earthquake caused many reservoirs damaged.According to the basic situation of earthquake-damaged reservoirs in Sichuan province,the Hongqi reservoir in Cangxi county was taken as a typical earth-rockfilled dam example for renovation analysis.Before renovation,the minimum safety factors against sliding of dam slope were only 1.098 ~ 1.145,less than the specification required values(1.15 ~ 1.25),as the water level dropped from exceptional flood level,design flood level and normal water level to dead water level.Through treatment and reinforcement,the values improved to 1.262 ~ 1.698 and met the requirements of specification.Finally,seismic resistance analysis was carried out to study the stability of the dam slope after renovation,and the seismic safety factors were 1.451 ~ 1.654 which met the specification requirements.The results of the statistical data and the renovation of a typical earth-rockfilled dam provided a reference for other similar earthquake-damaged reservoir.更多还原