摘要
建造垃圾填埋场通常采用粘土作为防渗体或作为GCL/GM的保护层共同构成复合防渗系统,但粘土材料应用于西北干旱、半干旱、干湿冻融交替循环环境,存在抗剪强度低及料源匮乏等问题.本文综述了国内外填埋场GCL/GM与保护层接触面抗剪强度研究进展,针对西北干旱、半干旱地区填埋场防渗问题,提出了宽级配砾石土代替粘土作为GCL/GM防渗垫的保护层的新型防渗方案,并就该方案在下一步验证试验中可能遇到的一些问题进行了讨论.
Clay is used for constituting a seepage-proof system or the protective layer of GCL/GM in landfill construction. However, this soil material, if applied in arid, semi-arid, or freeze-thaw areas in Northwestern China, it will be subjected to a weak shearing strength and a shortage of this material. The research developments on the shearing strength of the interface of GCL/GM and protective layer for landfill at home and abroad are summarized. Aiming at solving the seepage-proof problems of landfill in Northwestern China, a new scheme taking a wide size distribution of gravel soil instead of clay as the protective layer of the impermeable pad of GCL / GM is proposed; and possible problems in further verification tests are discussed.
出处
《三峡大学学报(自然科学版)》
CAS
2012年第3期77-79,共3页
Journal of China Three Gorges University:Natural Sciences
基金
国家自然科学基金2010年地区科学基金项目(41062004)
宁夏回族自治区2011年大学生创新实验资助项目
关键词
接触面抗剪强度
砾石土保护层
GCL/GM
填埋场
shearing strength of the interface
protective layer of gravel soil
GCL/GM
landfill
作者简介
通信作者:彭飞(1985-),男,硕士生,助理工程师,主要从事岩土工程相关研究.E-mail:308304198@qq.com