摘要
介绍某多层中间覆盖层填埋场边坡滑移过程的现场监测结果,包括渗滤液水位、表面水平位移和深层侧向位移.基于监测数据,开展稳定性分析,验证顶层降水、分层降水及近边坡区域降水的稳定控制效果.结果表明:最大滑移面积达到34 760m^2,第10平台的平均表面水平位移量为1.77m;近边坡区域的堆载是其失稳的主要原因;距堆载区越近,滑移程度越大,水位上升更显著;受中间覆盖层的影响,该类型填埋场的主要失稳模式是堆体内部的局部滑动;近边坡区域降水对其稳定控制效果明显.
A field monitoring program was carried out to record the slope failure process of a landfill with multiple intermediate covering layers.The monitored items include the leachate level,the surface horizontal displacement and the deep lateral displacement.Based on the monitoring data,analysis was carried out to verify the stability control effects of leachate drainage on the top layer,leachate drainage in different layers,and near-slope leachate drainage.The results show that the maximum slip area is 34 760 m 2 and the average surface horizontal displacement of the 10th platform is 1.77 m.Dumping near the slope is the main reason for the instability.The closer to the dumping area,the greater the degree of slip and the more significantly the leachate level rises.Affected by the intermediate covering layers,the failure mode is the local sliding inside the landfill,and the effect of near-slope leachate drainage on the stability control is obvious.
作者
何海杰
兰吉武
陈云敏
肖电坤
左欣茹
马鹏程
He Haijie;Lan Jiwu;Chen Yunmin;Xiao Diankun;Zuo Xinru;Ma Pengcheng(Institute of Geotechnical Engineering,Zhejiang University,Hangzhou 310058,China;Key Laboratory of Soft Soils and Geoenvironmental Engineering of Ministry of Education,Zhejiang University,Hangzhou 310058,China)
基金
The National Basic Research Program of China(973Project)(No.2012CB719800)
the National Natural Science Foundation of China(No.41502276)
关键词
填埋场
多层中间覆盖层
滑移
稳定性分析
控制措施
landfill
multiple intermediate covering layers
slip
stability analysis
control measures