摘要
采用数值分析法开展降雨作用下高边坡稳定性分析,结合该区域的降雨强度预测模型,揭示了降雨强度对坡稳定性的影响规律。同时开展降雨条件下高边坡变形数值分析,结合强度折减方式获得了现场监测点位移变化趋势,以《公路滑坡防治设计规范:JTG/T3334—2018》中边坡稳定状态判别为依据提出了高边坡变形预警机制,并提出了降雨边坡短期变形预警指标。研究结果建议降雨边坡短期变形预警指标取值为:黄色预警位移阈值1~2mm/h、橙色预警位移阈值3~4mm/h、红色预警位移阈值5~10mm/h。
To evaluate the safety of high slopes under rainfall conditions,uses numerical analysis method to conduct slope stability analysis under rainfall.Combined with the rainfall intensity prediction model in the region,a large number of numerical calculations are conducted to reveal the impact of rainfall on slope stability.Using the numerical analysis based on the strength reduction method obtained the displacement change of each monitoring point.Based on the slope stability state discrimination in the specification,the research on the high slope deformation early warning mechanism was carried out.The short-term deformation early warning indicators of rainfall slope are proposed.The research results suggest that the warning indicators of short-term rainfall slope deformation are as follows:yellow warning displacement threshold of 1~2 mm/h,orange warning displacement threshold of 3~4 mm/h,and red warning displacement threshold of 5~10 mm/h.
作者
王恒亮
渠根启
黄亦佳
潘童
万愉快
WANG Hengliang;QU Genqi;HUANG Yijia;PAN Tong;WAN Yukuai(Nanjing Jiangning District Construction Engineering Quality Supervision Station Nanjing 211134,China;East South-North Water Transfer Project Jiangsu Water Source Co.,Ltd.Xuzhou Branch Xuzhou 221000,China;College of Civil and Transportation Engineering,Hohai University Nanjing 210024,China;Jiangsu Provincial Construction Group First Engineering Co.,Ltd.Yangzhou 225008,China;Civil and Hydraulic Engineering College,Ningxia University Yinchuan 750021,China)
出处
《广东土木与建筑》
2024年第4期37-41,共5页
Guangdong Architecture Civil Engineering
基金
浙江省交通运输厅科研计划项目(2018036)。
关键词
边坡
稳定性分析
数值分析
降雨条件
变形预警
slope
stability analysis
numerical analysis
rainfall conditions
deformation warning
