摘要
非正规垃圾填埋场基本上都是根据自然地形地貌状况进行堆填,简单填埋未经处理的生活垃圾。这不仅对城市环境卫生造成影响,而且还制约了大量土地的直接开发,更重要的是会对地下水造成污染,致使居民生活用水安全受到极大威胁。由于北京市非正规垃圾填埋场数量众多,全部治理所需经费数量庞大,因此,迫切需要对上述非正规垃圾填埋场进行初步勘查与评价,为后期治理的轻重缓急和治理技术方案选择提供科学依据。非正规垃圾填埋场勘查与评价与常规岩土工程勘察不同,目前国内还未颁布针对非正规垃圾填埋场勘查与评价的规范及标准。文中首次根据非正规垃圾填埋场垃圾危害特性和所在场地水文地质条件特征,利用层次分析法对垃圾危害因子和地下水污染环境风险因子进行分层研究,提出了有效隔污厚度MeP和阻隔截污指数PI等实用性概念,建立了非正规垃圾填埋场风险评价分级方法和指标体系,并结合工程实例,探讨了风险评价分级方法的实际应用,总结了垃圾填埋场初步勘查与评价的工作程序和技术要点,在类似勘查中具有重要的参考和借鉴价值。
Unregulated landfill sites largely use ＇natural conditions to fill out the untreated garbage and take over lots of land resources. They not only affect the city environmental sanitation, but also pose significant risks to resident domestic water. Because there are many unregulated landfill sites in Beijing, the needed funds for treating all of them are huge. Therefore, preliminary survey and assessment on the unregulated landfill sites are urgently needed to provide the scientific basis for government decision, precedence order and choice of technical treatments. Survey and assessment on unregulated landfill sites have a remarkable difference with traditional geotechnical investigation, especially in the areas of required investigation, prospecting technique, exploration of arrangements, and inspection and testing projects. China has not yet enacted domestic standards and guidelines about the preliminary survey and as- sessment on unregulated landfill sites. The risk assessment method and the indicator system are established first in this papers. They combine the ground water pollution risks and dangers of garbage itself by hierarchy process method. Also the concepts of anti-contamination effective thickness and anti-contamination index are first put forward. Finally,this paper takes a project in Beijing as an example. It discusses the actual application of the risk assessment method, and summarizes systematically the procedures and techniques for survey and assessments： The practical resuits show that the proposed preliminary survey and method assessment have important reference value to similar unregulated landfill survey.
出处
《工程地质学报》
CSCD
北大核心
2011年第5期771-777,共7页
Journal of Engineering Geology
基金
北京市科学技术委员会项目
关键词
非正规垃圾填埋场
治理
初步勘查与评价
阻隔截污指数
风险分级方法
Unregulated landfill site, Treat, Preliminary survey and assessment, Anti-contamination index, Risk assessment method
