渣土填埋场滑坡风险等级评估——以杭州某渣土场为例  

Landslide Risk Level Assessment of A Landfill:A Case Study of A Landfill in Hangzhou

作　　者：张帅 王帅茸 雷孟麟 代聪 詹良通[1] ZHANG Shuai;WANG Shuairong;LEI Menglin;DAI Cong;ZHAN Liangtong(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou Zhejiang 310058)

机构地区：[1]浙江大学建筑工程学院,浙江杭州310058

出　　处：《环境卫生工程》2024年第1期1-8,共8页Environmental Sanitation Engineering

基　　金：国家重点研发计划项目(2019YFC1806001);国家自然科学基金资助项目(51988101,52278376)。

摘　　要：“渣土围城”是我国城镇化发展以来最大的障碍之一,渣土场滑坡给周边环境带来了极大的安全隐患。针对渣土场滑坡风险评估的复杂性,建立了一种渣土场滑坡风险等级评估方法,该方法以定性和半定量的方式将渣土自身特性和滑坡特点考虑在滑坡风险评估的各个物理过程中,构建边坡安全系数与失稳概率等级的对应关系,将边坡失稳概率等级与危害性等级分为极高、高、中、低4级,并建立4×4的风险等级矩阵;提出贯穿渣土场建设全过程的滑坡风险管控对策,涉及渣土场选址、建设和治理、监测和预警、应急响应4个部分;以杭州某渣土场为例详细说明该方法在实际场地中的应用,通过对研究区域进行边坡稳定性分析、运移距离估计和危害性结果统计,评估了该渣土场在堆填结束后的滑坡风险等级。“Waste soil siege”is a major obstacle to rapid urbanization in China,posing potential safety hazards to the surrounding environment due to the landslide of landfills.In terms of the complexity of the landslide risk assessment of landfills,a method to evaluate the landslide risk level of landfills was proposed.In this method,the characteristics of waste soil and landslides were considered in each physical process of landslide risk assessment in a qualitative and semi-quantitative way.The method established a corresponding relationship between the slope safety factor and the failure probability grade,which divided the failure probability and damages of the landfill slope into four grades of extremely high,high,medium,and low,meanwhile,a risk level matrix of 4×4 was established.Landslide risk control countermeasures for the entire process of landfill construction were proposed,including site selection,construction and management,monitoring and early warning,as well as emergency response.A landfill in Hangzhou was taken as an example to illustrate the application of this method in an actual site.Through the slope stability analysis,migration distance estimation,and damage result statistics of the study area,the landslide risk level of the landfill after the filling was evaluated.

关 键 词：渣土场 滑坡 边坡稳定性 风险评估 风险管控 

分 类 号：TU43[建筑科学—岩土工程] P642.22[建筑科学—土工工程]