淤泥质软土坝基抗滑稳定性分析及加固处理  

Stability and reinforcement of sludge soft soil dam foundation

作　　者：赵爽 ZHAO Shuang(Anhui Suzhou Water Conservancy Construction Co.,Ltd.,Suzhou234000,China)

机构地区：[1]安徽三洲水利建设有限公司,安徽宿州234000

出　　处：《水科学与工程技术》2020年第2期52-54,共3页Water Sciences and Engineering Technology

摘　　要：以某坝基含有厚层淤泥质土的大坝为例,通过数值模拟分析,加固前坝体安全系数较低,主要产生沿淤泥质土滑动破坏;通过方案比选,选取坝脚压重的坝基处理方案,具有施工速度快、投资低等特点;设计压重体宽15.0m,高8.3m,坝坡系数1∶3,经计算,正常运行工况下游坝坡安全系数由1.08~1.09提升至1.26~1.27,达到规范要求。Taking a dam with thick silty soil as an example,through numerical simulation analysis,the safety factor of dam body before reinforcement is low,which mainly produces sliding failure along silty soil.Through scheme comparison and selection,the dam foundation treatment scheme of dam foot pressure is selected,which has the characteristics of fast construction speed and low investment.The width of the weight body is designed to be 15.0m,8.3m high and 1∶3 dam slope coefficient.The safety factor of downstream dam slope under normal operation condition is increased from 1.08~1.09 to 1.26~1.27,which meets the requirements of the code.

关 键 词：坝基加固 坝脚压重 抗滑 安全系数 

分 类 号：P64[天文地球—地质矿产勘探]