四川西部地区地理环境复杂,滑坡空间结构多样且变形剧烈。为有效预防滑坡灾害,需要探究相关区域滑坡危险性可靠评价方法。利用G1-熵权耦合赋权逼近理想解排序法(technique for order preference by similarity to ideal solution,TOPSIS...四川西部地区地理环境复杂,滑坡空间结构多样且变形剧烈。为有效预防滑坡灾害,需要探究相关区域滑坡危险性可靠评价方法。利用G1-熵权耦合赋权逼近理想解排序法(technique for order preference by similarity to ideal solution,TOPSIS)构建滑坡灾害危险性评价模型,选取高程、降雨、地震动参数等12个评价因子,对雅砻江滑坡灾害危险性进行评价。依据贴近度将滑坡区域分为4个等级,即高危险区(0.75~1)、较高危险区(0.5~0.75)、中等危险区(0.25~0.5)和低危险区(0~0.25)。同时,对比了由差分干涉测量短基线集时序分析(small baseline subset interferometric synthetic aperture radar,SBAS-InSAR)技术得到的4个区域滑坡实测结果和本文评价模型的分析结果。利用G1-熵权耦合赋权TOPSIS得到九龙县烟袋镇桤木林村高生地滑坡、新龙县和平乡甲西村麻西滑坡、德格县年古乡政府滑坡和甘孜县扎科乡达玛滑坡的贴近度分别为0.854、0.686、0.405和0.224,由SBAS-InSAR技术得到滑坡前缘局部变形速率分别为-150、-43、-66、30 mm/a,二者之间有显著的对应关系,证明本文评价模型的准确性。应用G1-熵权耦合赋权TOPSIS法对滑坡危险性评价具有较高的准确性,该方法可为其他地区滑坡地质灾害评价提供参考。展开更多
Add the masking agent and biscyclohexanoneoxalyldihydraone into the diluted clarificd liquid of the landfill leachate which was treatmented by digestion and centrifugal filtration to complexate all heavy metal ion in ...Add the masking agent and biscyclohexanoneoxalyldihydraone into the diluted clarificd liquid of the landfill leachate which was treatmented by digestion and centrifugal filtration to complexate all heavy metal ion in the trcatmented liquid, and extracted using CHCl3 many time, then it were demasking and decomposing respectively, and adjusted different pH and formed Me^n＋-PAN coordination compound when these metal ion reaction with PAN. The Fluoresence quenching of Rh6G （λex/λem=543mn/558nm） when the metal ion coordination compound was add into the Rh6G solution step by step, the quenching intensity was directly proportional to the concentration of the metal ion in the certain range. So a new method of fast and simple for determination of trace metal ion in landfill lcachate was established to determine metal ion in sample of different landfill leachate in Three Gorge Water Reservoir, and comparison the classic assay method with satisfactory results.展开更多
文摘四川西部地区地理环境复杂,滑坡空间结构多样且变形剧烈。为有效预防滑坡灾害,需要探究相关区域滑坡危险性可靠评价方法。利用G1-熵权耦合赋权逼近理想解排序法(technique for order preference by similarity to ideal solution,TOPSIS)构建滑坡灾害危险性评价模型,选取高程、降雨、地震动参数等12个评价因子,对雅砻江滑坡灾害危险性进行评价。依据贴近度将滑坡区域分为4个等级,即高危险区(0.75~1)、较高危险区(0.5~0.75)、中等危险区(0.25~0.5)和低危险区(0~0.25)。同时,对比了由差分干涉测量短基线集时序分析(small baseline subset interferometric synthetic aperture radar,SBAS-InSAR)技术得到的4个区域滑坡实测结果和本文评价模型的分析结果。利用G1-熵权耦合赋权TOPSIS得到九龙县烟袋镇桤木林村高生地滑坡、新龙县和平乡甲西村麻西滑坡、德格县年古乡政府滑坡和甘孜县扎科乡达玛滑坡的贴近度分别为0.854、0.686、0.405和0.224,由SBAS-InSAR技术得到滑坡前缘局部变形速率分别为-150、-43、-66、30 mm/a,二者之间有显著的对应关系,证明本文评价模型的准确性。应用G1-熵权耦合赋权TOPSIS法对滑坡危险性评价具有较高的准确性,该方法可为其他地区滑坡地质灾害评价提供参考。
文摘Add the masking agent and biscyclohexanoneoxalyldihydraone into the diluted clarificd liquid of the landfill leachate which was treatmented by digestion and centrifugal filtration to complexate all heavy metal ion in the trcatmented liquid, and extracted using CHCl3 many time, then it were demasking and decomposing respectively, and adjusted different pH and formed Me^n＋-PAN coordination compound when these metal ion reaction with PAN. The Fluoresence quenching of Rh6G （λex/λem=543mn/558nm） when the metal ion coordination compound was add into the Rh6G solution step by step, the quenching intensity was directly proportional to the concentration of the metal ion in the certain range. So a new method of fast and simple for determination of trace metal ion in landfill lcachate was established to determine metal ion in sample of different landfill leachate in Three Gorge Water Reservoir, and comparison the classic assay method with satisfactory results.
