云龙水库初蓄期大坝渗流观测资料分析

Analysis on dam seepage of Yunlong Reservoir during the first storing-up period

云龙水库是昆明市掌鸠河引水供水工程的水源工程,水库大坝为黏土心墙堆石坝,属大(二)型水库.工程于2000年8月开工,2004年3月下闸蓄水,至2006年10月水位已超过正常蓄水位.为评价云龙水库在首次正常蓄水位下的渗流安全状况,根据云龙水库从开工到首次正常蓄水位下的渗流安全监测资料,对云龙水库初蓄期大坝的渗流压力、渗透水位、绕坝渗流以及渗流量等进行了分析,绘制了观测断面的浸润线.综合分析结果表明,云龙水库大坝在首次正常蓄水位下的渗流状况是安全的.

Yunlong Reservoir is the headstream of Zhangjiuhe water supply project for Kunming city. The dam of the reservoir is a 77.33 m high clay-core rock fill dam, and the total storage capacity of the reservoir is 4.84×10s m^3. The project began in August 2000, and the water level had exceeded the normal water level in October 2006 since the closing of the sluice gates in March 2004. To judge the safety rank of Yunlong Reservoir during the first storing-up period, based on the data monitored from the beginning of the project to the time when the water level reached the normal water level, the seepage pressure, seepage water level, seepage around the dam abutment and seepage discharge of the dam are analyzed in this paper, and seepage lines are also drawn. The results indicate that the seepage state of Yunlong Reservoir is safe during the first storing-up period.