| 垃圾填埋场封盖及衬里多界面力学特性的研究进展 |
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| 作者姓名： | 苏薇 徐超 叶为民 陈永贵 |
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| 作者单位： | [1]同济大学岩土及地下工程教育部重点实验室,上海200092 [2]教育部城市环境与可持续发展联合研究中心,上海200092 |
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| 基金项目： | 国家自然科学基金（41272287）;上海市浦江人才计划（13PJD029） |
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| 摘 要： | 为了人类社会的可持续发展，对产量惊人的生活垃圾进行合理地处置成为世界各国亟待解决的问题之。垃圾填埋法是符合处置经济性和技术可行性的理想方案。垃圾填埋场投八运营后，如何防止被填埋垃圾及其次生有害物质进八周围环境，是垃圾填埋场设计环节必须考虑的关键问题之。在城市垃圾填埋场底部衬里系统及封盖系统中设置水力屏障，能有效防止填埋场中所产生的废液、废气向周围环境中迁移。水力屏障通常由土工合成材料与膨润土防水垫或压实粘土组成，形成个多界面的复合衬里或复合封盖体系。这种多界面力学特性以及潜在薄弱面对垃圾填埋场的稳定性具有控制作用，因此成为业界的研究重点。本文依据填埋场封盖和衬里土工合成材料多界面力学特性的最新研究，对所取得的研究成果进行分析和讨论。
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| 关 键 词： | 城市环境地质 废弃物处置 垃圾填埋场 复合界面 水力屏障 衬里封盖系统 土工合成材料 多界 面力学 膨润土防水垫 非饱和土 研究综述 |
Advances in the investigation of the mechanical properties of landfill multi-layer cover and liner systems |
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| Authors: | SU Wei XU Chao YE Wei Min CHEN yong Gui |
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| Institution: | SU Wei, XU Chao, YE Wei Min, CHEN yong Gui |
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| Abstract: | Disposing of the increasing amounts of municipal solid waste in an appropriate manner is one of the urgent issues that must be tackled if sustainable development is to be achieved. Landfill is one waste management option that is both economically and technically attractive. However, how best to prevent the waste, and its harmful byproducts, from migrating into the surrounding environment during landfill operations remains a key problem, and requires careful consideration during the design stage of such facilities. A multiple hydraulic barrier consists of geocomposite and geosynthetic clay liner sheets that must be placed in both the cover and liner systems of landfills to prevent contamination of the surrounding environment. The mechanical properties of these composite interfaces and the potential failure surfaces, which are of crucial importance in the safety of the whole lan drill, have been the focus of industry research efforts. This paper focuses on recently published research into the mechanical properties of the composite interface in the base liner and cover systems of landfills, and presents related theoretical analysis and discussion. |
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| Keywords: | urban environment geology disposal of castoff landfill composite interface hydraulic barrier liner and coversystems geosynthetics composite interface mechanics geosynthetic clay liner （GCL） unsaturated soil research review |
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