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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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

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https://rockmech.whrsm.ac.cn/EN/Y2011/V30/I10/1970

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