不同工况下水库大坝固化灰浆防渗墙防渗效果数值分析
Numerical Analysis of the Anti-seepage Effect of Solidified Mortar Anti-seepage Walls in Reservoir Dams under Different Working Conditions
董方剑 1钱龙 2胡继洲 2李思远 1郭子轩 1孙树林1
作者信息
- 1. 河海大学地球科学与工程学院,江苏南京 210098
- 2. 南京水科院瑞迪科技集团有限公司,江苏南京 210000
- 折叠
摘要
针对山东东营孤东水库坝体渗漏问题,提出了大坝的防渗加固方案,对加固后的大坝渗流及稳定性进行数值计算.结果表明,固化灰浆防渗墙方案能很好地解决大坝渗漏问题,加固后设计蓄水位下出逸比降低于允许渗透比降.在水位骤降的条件下,大坝内部压力水头线下降,安全系数提高到1.40;在地震荷载的工况下,安全系数提高到1.32～1.44.加固后围坝的安全系数满足规范值,保证满足大坝的防渗要求,各工况的安全系数也都符合规范要求,可为类似加固工程提供可靠参考.
Abstract
A seepage prevention and reinforcement plan for the Gudong Reservoir dam in Dongying,Shandong is proposed,and numerical calculations are conducted on the seepage and stability of the reinforced dam.The results indicate that the solidified mortar anti-seepage wall scheme can effectively solve the problem of dam leakage,and after reinforcement,the outflow ratio under the designed water storage level is lower than the allowable permeability ratio.Under the condition of a sudden drop in water level,the internal pressure head line of the dam decreases and the safety coefficient increases to 1.40;Under seismic loading conditions,the safety factor is increased to 1.32～1.44.The safety factor of the reinforced dam meets the standard value,ensuring that it meets the anti-seepage requirements of the dam.The safety factors of each working condition also meet the standard requirements,providing reliable reference for similar reinforcement projects.
关键词
坝基渗漏/固化灰浆防渗墙/数值分析/渗流计算/安全系数Key words
dam foundation leakage/solidified mortar anti-seepage wall/numerical analysis/seepage calculation/safety factor引用本文复制引用
基金项目
中央高校基本科研业务费专项(2109B42214)
出版年
2024
NETL
NSTL
万方数据