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This paper studies a landfill where there are three faults running through.As serious pollution has occurred to the geological environment,the landfill is to be closed up and renovated.The paper aims to explore the role of fracture structure in leachate pollution at the landfill.The research was carried out in several stages.First,mathematical models of the pre-renovation landfill with three faults running through and the landfill after renovation were established.And then,the boundary conditions and parameters of the two mathematical models were determined.The groundwater level of the landfills was simulated in order to modify the two mathematical models.As a result,a feasible mathematical model was achieved.Based on this model,a comparison was made of the COD concentration variations in the inside leachate and outside leachate between the two landfills. Accordingly,the impacts of the fracture structure on the pollution of leachate at the landfills could be identified.The study results show that while faults contribute to the migration of leachate,they also serve as a confluence of leachate,thus further deteriorating the environment.The COD concentrations of the inside leachate and the outside leacbate of the pre-renovation landfill are respectively 800 mg/L and 220 mg/L higher than those of the post.renovation landfill.Therefore,measures must be taken to handle the leachate seepage in areas where there are faults as well as the neighboring areas so as to get the environmental pollution under control. 相似文献
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This paper studies a landfill where there are three faults running through. As serious pollution has occurred to the geological environment, the landfill is to be closed up and renovated. The paper aims to explore the role of fracture structure in leachate pollution at the landfill. The research was carried out in several stages. First, mathematical models of the pre-renovation landfill with three faults running through and the landfill after renovation were established. And then, the boundary conditions and parameters of the two mathematical models were determined. The groundwater level of the landfills was simulated in order to modify the two mathematical models. As a result, a feasible mathematical model was achieved. Based on this model, a comparison was made of the COD concentration variations in the inside leachate and outside leachate between the two landfills. Accordingly, the impacts of the fracture structure on the pollution of leachate at the landfills could be identified. The study results show that while faults contribute to the migration of ieachate, they also serve as a confluence of leachate, thus further deteriorating the environment. The COD concentrations of the inside leachate and the outside leachate of the pre-renovation landfill are respectively 800 mg/L and 220 mg/L higher than those of the post-renovation landfill. Therefore, measures must be taken to handle the ieachate seepage in areas where there are faults as well as the neighboring areas so as to get the environmental pollution under control. 相似文献
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1．课前准备。要求每位同学用①课本最后一页的中国政区空白图贴在硬纸片上。用胶水均匀地粘贴在硬纸上，并用水彩笔，把不同的省级轮廓着上不同颜色，便于区别各省；②待纸片干后，首先沿图界剪好中国图形的硬纸片，(台湾和海南两省分别沿着海上疆界剪下)；其次再沿各省、自治区、直辖市界线，剪好各省级行政区的图形硬纸片，(北京市、天津市可与河北连在一起，上海市与江苏省连在一起)。③将剪好的图形硬纸片装入塑料袋内，以备活动课上用。 相似文献
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分析新重庆市的市情特征，探讨重庆城市发展战略必须走“城市—区域”共同发展的新路子，提出重庆城市发展与区域整合的战略决策。 相似文献
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2000年1—5月,中国地质学会以通讯方式召开了中国地质学会第九次会员代表大会。由各省、自治区、直辖市地质学会产生代表416名,以通讯投票方式选举了第三十七届理事会,145名理事候选人全部当选,其中各省、市、自治区学会推荐的理事30名,中国地质学会各专业(工作)委员会推荐的理事45名,科研、院校与各部门推荐的理事70名。4月29日, 相似文献
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