摘要
以温州市鹿城区丰门河水系清淤疏浚工程为依托,利用Geo-studio软件对拓宽前后的河道岸坡稳定性进行数值模拟分析,以期发现丰门排涝河道在疏浚拓宽前后的岸坡稳定性变化规律。研究发现,原河道的岸坡安全系数在小于所规定安全系数的区间内仍然有分布,河道有潜在的坍塌风险,而疏浚拓宽后的河道岸坡安全系数全部位于安全区间,河道已经具备足够的稳定性。拓宽开挖后,河道岸坡稳定对水位变化的敏感性降低,只有在水位超过3.7 m高程时,岸坡稳定性才会出现明显变化。经过分析得出,疏浚拓宽在显著增强排涝河道岸坡稳定性的同时,也有效降低了岸坡稳定性对水位变化的敏感度。
Relying on the dredging project of Fengmen River in Lucheng District,Wenzhou,numerical simulation analysis of the bank slope stability before and after the widening was carried out by using Geo-studio software so as to find out the changing regularity of bank slope stability of the drainage channel before and after dredging and widening.The research found that the bank slope safety factor of the original channel still had a distribution within the interval below the specified safety factor,indicating potential collapse risk.However,after the dredging and widening,the bank slope safety factors of the channel were all within the safe range,indicating that the river channel has achieved sufficient stability.After the excavation and widening,the sensitivity of the bank slope stability to water level changes decreased.Only when the water level exceeded an elevation of 3.7 meters did the stability of the slope significantly change.Through analysis,it was concluded that the dredging and widening significantly enhanced the bank slope stability of the drainage channel,effectively reducing the sensitivity of the slope stability to water level changes.
作者
李娟
蒋宁
陈强
万俊
周林真
LI Juan;JIANG Ning;CHEN Qiang;WAN Jun;ZHOU Linzhen(Lucheng Water Conservancy Engineering Construction Center,Wenzhou 325088,China;School of Hydraulic Engineering,Zhejiang University of Water Resources and Electric Power,Hangzhou 310018,China)
出处
《浙江水利水电学院学报》
2024年第5期36-41,共6页
Journal of Zhejiang University of Water Resources and Electric Power
基金
浙江省水利厅科技计划项目(RB2222)。
关键词
拓宽疏浚
岸坡稳定
水位变化
渗流
widening and dredging
bank slope stability
water level changes
seepage
