摘要
利用GEOSTUDIO软件中SEEP/W和SLOPE/W模块对某水库上游围堰合拢位置出现渗漏情况进行稳定变形分析。结果表明:设计水位条件下,围堰下游的渗漏量比当前水位及坝高情况下的渗漏量增加量不大,围堰的上、下游坝坡最危险滑动面稳定安全系数满足规范要求,围堰主要变形发生在2月1日之前,此后的累计变形趋于平缓,目前已进入稳定状态。建议在围堰下游漏水处设置压渗平台,在龙口前面铺盖位置顺河向和横河向大于龙口宽度一定范围内先抛填麻袋装粘土,再抛填粘土;在超标洪水条件下,加强监测、险情监测与巡查、启用备用设备等应急预案,以确保围堰安全稳定运行,为工程建设提供保障。
The SEEP/W and SLOPE/W modules in the GEOSTUDIO software were used to analyze the leakage of the upstream cofferdam in a reservoir. The results show that under the design water level condition, the leakage amount downstream of the cofferdam is not much larger than that of the current water level and dam height. The safety factor of the most dangerous sliding surface of the upper and lower dam slopes of the cofferdam meets the requirements of the specification. The main deformation of the cofferdam occurred before February 1st, and the cumulative deformation thereafter became flat and has now entered a stable state. It is recommended to install a pressure infiltration platform at the water leakage downstream of the cofferdam. In the front of the Longkou, the direction of the river and the horizontal river are larger than the width of the dragon mouth. The clay is first filled and then filled with clay. Under the condition of excessive flooding, the monitoring is strengthened. Emergency plans such as monitoring and inspection of dangerous situations and the activation of spare equipment to ensure the safe and stable operation of the cofferdam and provide guarantee for the construction of the project.
作者
姜从伟
漆文邦
费文平
虎珀
米韵潭
Jiang Congwei;Qi Wenbang;Fei Wenping;Hu Po;Mi Yuntan(School of Water Resources and Hydropower,Sichuan University,Chengdu 610065,Sichuan)
出处
《陕西水利》
2019年第7期8-10,共3页
Shaanxi Water Resources
关键词
围堰
GEOSTUDIO
坝坡稳定
变形
处理措施
Cofferdam
GEOSTUDIO
the dam slope stability
the deformation and the treatment measures
