摘要
在概述坝体渗流及坝坡抗滑稳定分析原理的基础上,以地处新疆和田地区皮山县境内的波斯干水库为例,应用Van Genuchten模型进行水库大坝坝体加固前后渗透系数计算,并通过的Bishop法分析该水库土石坝抗滑稳定性。根据分析结果,波斯干水库大坝所采用的“清淤+削坡+新建排水棱体”的除险加固措施切实可行,加固措施实施后上游坝坡安全系数增大,下游坝坡失稳概率降低,加固措施对于坝体渗流及坝坡稳定性具有显著改善和提升作用。
This paper summarizes the principle of dam seepage and dam slope anti-sliding stability analysis.At the same time,this paper takes the Bosgan Reservoir in Pishan County,Hotan,Xinjiang as an example,and applies the Van Genuchten model to calculate the permeability coefficient of the reservoir dam before and after reinforcement.The anti-sliding stability of the reservoir earth-rock dam is analyzed by the Bishop method.According to the analysis results,the reinforcement measures of"dredging&slope cutting&new drainage prism"adopted by the Bosgan Reservoir dam are practical and feasible.After the reinforcement measures are implemented,the safety factor of the upstream dam slope increases,and the instability probability of the downstream dam slope decreases.The reinforcement measures can significantly improve and enhance the seepage of the dam body and the stability of the dam slope.
作者
张奇
Zhang Qi(Guangdong Yuantian Engineering Co.,Ltd.,Guangzhou 511340,Guangdong)
出处
《陕西水利》
2022年第4期18-20,共3页
Shaanxi Water Resources
关键词
坝体加固
渗流
坝坡稳定
土石坝
BISHOP法
Dam body reinforcement
seepage
dam slope stability
earth-rock dam
Bishop method
