垃圾填埋场灾变过程的温度–渗流–应力–化学耦合效应研究

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摘要针对当前垃圾填埋场灾变过程预测与控制的迫切需求，结合垃圾填埋场及其周围复杂而特殊的环境地质条件，从温度–渗流–应力–化学(T-H-M-C)多场耦合角度深入分析垃圾填埋场灾变过程的演化机制与开展多场耦合研究的必要性。提出填埋气体运移的微生物降解–温度–渗流(B-T-H)耦合模型、考虑好氧和厌氧微生物降解作用的垃圾渗沥液污染物迁移转化渗流–微生物降解–化学(H-B-C)耦合模型、复合衬垫系统污染物运移渗流–化学(H-C)耦合模型以及考虑热量变化和水蒸气迁移过程对开裂过程影响的填埋场封场覆盖系统干燥开裂温度–渗流–应力(T-H-M)耦合模型，为垃圾填埋场灾变过程的预测和安全性评价提供有效的分析手段。提出一套多场耦合测试分析方法与试验技术，开发集监测、控制与数据采集于一体的填埋场中污染物传输的多场耦合测试分析系统。形成一套填埋场污染物多参数远程同步监测方法与技术，研制集实时监测与视频监督于一体的垃圾填埋场污染物远程在线监督系统。针对多场耦合作用下封场覆盖系统开裂问题，提出新型环保的垃圾填埋场封场覆盖生态污泥腾发覆盖技术(EST)。上述研究成果可为垃圾填埋场灾变过程的预防与控制提供科学手段和技术支持，同时对于丰富和拓宽多场多相耦合理论的发展具有重要的理论意义和应用价值。

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关键词 ：环境工程；垃圾填埋场；温度&ndash, 渗流&ndash, 应力&ndash, 化学耦合；多场耦合测试分析系统；远程在线监督

Abstract：According to the urgent demand for prediction and control of catastrophe process of landfill，the evolution mechanism of catastrophe process and necessity of studying on multi-field coupling were both thoroughly analyzed in the view of thermo-hydro-mechanical-chemical(T-H-M-C) coupling theory combining with the complex and special environmental geological conditions of landfill and its surrounding regions. Four models of biological-thermo-hydro(B-T-H) coupling model of landfill gas migration，hydro-biological-chemical (H-B-C) coupling model of leachate migration and transformation in landfill under the effect of aerobe and anaerobe degradation，hydro-chemical(H-C) coupling model of pollutant migration in composite liner system and thermo-hydro-mechanical(T-H-M) coupling model on dry cracking of closure cover system of landfill under the effect of heat quantity changing and vapor migration were established to provide an effective analytical method for predicting and controlling catastrophe process of landfill. Furthermore，the multifield coupling test and analysis system of contaminants transport in rock and soil，integrating monitoring，controlling and data acquisition into one body，was developed based on the proposed measuring methods and test technology. The on-line monitoring system integrating real-time monitoring and video supervising into one body was developed based on the formed multi-parameter remote synchronization monitoring methods and technology of landfill pollutants. Finally，according to the cracking issue of closure cover system of landfill，a new environmental protection technology of ecological sludge evapotranspiration technology was proposed. The above achievements can offer scientific means and technical support to predict and control landfill catastrophe；meanwhile，it also has important theoretical significance and application value in enriching and widening multi-field coupling theory.

Key words： environmental engineering landfill thermo-hydro-mechanical-chemical(T-H-M-C) coupling multifield coupling test and analysis system on-line monitoring system ecological sludge evapotranspiration technology

引用本文:

薛强，赵颖，刘磊，陆海军. 垃圾填埋场灾变过程的温度–渗流–应力–化学耦合效应研究[J]. 岩石力学与工程学报, 2011, 30(10): 1970-1988.
XUE Qiang，ZHAO Ying，LIU Lei，LU Haijun. STUDY OF THERMO-HYDRO-MECHANICAL-CHEMICAL COUPLING EFFECT OF CATASTROPHE PROCESS OF LANDFILL. , 2011, 30(10): 1970-1988.

链接本文:

http://www.rockmech.org/CN/Y2011/V30/I10/1970

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