垃圾场填埋气泄漏过程高密度电阻率法监测效能分析  

Performance Analysis of Electrical Resistivity Tomography in Landfill Gas Leakage Process

作　　者：刘慧芳 郭秀军[1,2,3] 吴景鑫 李波 孙浩 丁冠涛 Liu Huifang;Guo Xiujun;Wu Jingxin;Li Bo;Sun Hao;Ding Guantao(College of Environmental Science and Engineering,Ocean University of China,Qingdao 266100,China;Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering,Qingdao 266100,China;The Key Laboratory of Marine Environmental Science and Ecology,Ministry of Education,Ocean University of China,Qingdao 266100,China;801 Institute of Hydrogeology and Engineering Geology,Shandong Provincial Bureau of Geology&Mineral Resources,Jinan 250014,China)

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266100 [2]山东省海洋环境地质工程重点实验室,山东青岛266100 [3]中国海洋大学海洋环境与生态教育部重点实验室,山东青岛266100 [4]山东省地质矿产勘查开发局八〇一水文地质工程地质大队,山东济南250014

出　　处：《中国海洋大学学报（自然科学版）》2023年第2期107-115,共9页Periodical of Ocean University of China

基　　金：青岛市科技发展计划项目(21-1-4-sf-9-nsh)资助。

摘　　要：垃圾场填埋气近年来被开发为一种生物能资源,但开采过程填埋气的泄漏也会带来爆炸、加剧温室效应等环境问题。实时监测填埋气泄漏过程对合理开采填埋气资源具有重要意义。本文基于电阻率法对封场系统中填埋气的逸出过程进行监测实验,探究电阻率法对于该过程的监测能力。实验结果表明,高密度电阻率方法对填埋气泄漏均具有较好的定性监测能力。气体泄漏区域在电阻率监测剖面中表现为高电阻率变化比区域,并且泄漏量可以根据电阻率变化幅度定性表征,该方法可大致确定气体泄漏通道位置及气体泄漏范围。电阻率法易受降雨等外界条件的影响且对含气区域的边界界定不明显,应选择适宜的天气条件进行监测,为得到更精确的结果,可与土壤剖面气体采集探针相结合。Landfill gas from garbage dumps has been developed as a bioenergy resource in recent years,but the leakage of landfill gas during the mining process can also cause environmental problems such as explosions and aggravation of the greenhouse effect.Real-time monitoring of the leakage process of landfill gas is of great significance to the rational exploitation of landfill gas resources.Based on the ERT,this paper conducts a monitoring experiment on the escape process of landfill gas in the closure system,and explores the ability to monitor the process.The experimental results show that the ERT has good qualitative monitoring capabilities for landfill gas leakage.The gas leakage area appears as a high resistivity change ratio area in the resistivity monitoring profile,and the leakage amount can be qualitatively characterized according to the resistivity change range;this method can roughly determine the location of the gas leakage channel and the gas leakage range.The ERT is susceptible to external conditions such as rainfall and does not clearly define the boundary of the gas-bearing area.Appropriate weather conditions should be selected for monitoring.In order to obtain more accurate results,it can be combined with soil profile gas collection probes.

关 键 词：填埋气 电阻率 泄漏 监测 剖面特征 

分 类 号：X131.3[环境科学与工程—环境科学]