多重影响因素下的边坡稳定性评价方法及应用
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摘要
在边坡稳定性评价方法基础上,分析了边坡稳定性评价方法的某些缺陷,讨论了影响边坡稳定性的因素,并对影响边坡稳定性的几类指标进行分析和归类。从地质条件、自然环境、工程设计等角度考虑,建立了一种考虑多重影响因素并结合层次分析法(AHP)和模糊数学的边坡稳定性评价方法,利用该方法对某露天矿山边坡进行了稳定性评价。新分级体系下的边坡稳定性分级结果表明,中区和南区下盘边坡是潜在不稳定区域,需要进一步分析,而上盘边坡的稳定性明显好于下盘边坡的稳定性,这与CSMR的分级结果相近,验证了指标分类的合理性以及该评价方法的可行性。
Based on the method of slope stability assessment, the disadvantages of the slope stability assessment method has been analyzed. The factors of approach for evaluating rock slopes' stability have been proposed, and the factors that affecting the slope stability have been analyzed and categorized. They have been categorized into three groups, which are geological factor, environmental factor, and engineering factor. Based on these, a new approach for evaluating rock slopes' stability under the comprehensive effect of multiple factors combining Analytic Hierarchy Process (AHP) and fuzzy mathematics has been set up. A certain open-pit's rock slope has been evaluated by this approach. The results under the new classification system of slope stability classification showed that the central and southern district of footwall slope was potentially unstable areas, which need further analysis. Moreover the slope stability of the hanging wall was much better than the footwall, which was similar with CSMR classification results. The results showed that the factors' categorization was rational and the assessment was valid.
Based on the method of slope stability assessment, the disadvantages of the slope stability assessment method has been analyzed. The factors of approach for evaluating rock slopes' stability have been proposed, and the factors that affecting the slope stability have been analyzed and categorized. They have been categorized into three groups, which are geological factor, environmental factor, and engineering factor. Based on these, a new approach for evaluating rock slopes' stability under the comprehensive effect of multiple factors combining Analytic Hierarchy Process (AHP) and fuzzy mathematics has been set up. A certain open-pit's rock slope has been evaluated by this approach. The results under the new classification system of slope stability classification showed that the central and southern district of footwall slope was potentially unstable areas, which need further analysis. Moreover the slope stability of the hanging wall was much better than the footwall, which was similar with CSMR classification results. The results showed that the factors' categorization was rational and the assessment was valid.
引文
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[2]谢全敏,夏元友.岩体边坡治理决策的模糊层次分析方法研究[J].岩石力学与工程学报,2003,22(7):1117-1120.Xie Quanmin,Xia Yuanyou.Chinese Journal of Rock Mechanics and Engineering,2003,22(7):1117-1120.
[3]黄建文,李建林,周宜红.基于AHP的模糊评判法在边坡稳定性评价中的应用[J].岩石力学与工程学报,2007,26(S1):2627-2632.Huang Jianwen,Li Jianlin,Zhou Yihong.Chinese Journal of Rock Mechanics and Engineering,2007,26(S1):2627-2632.
[4]李彰明.模糊分析在边坡稳定性评价中的应用[J].岩石力学与工程学报,1997,16(5):490-495.Li Zhangming.Chinese Journal of Rock Mechanics and Engineering,1997,16(5):490-495.
[5]Liu Y C,Chen C S.A new approach for application of r ock mass classification on rock slope stability assessment[J].Engineering GeologyJournal,2007,89(1-2):129-143.
[6]林立相,徐汉斌.边坡稳定性分析的可靠度方法[J].山地学报,1999,17(3):235-239.Lin Lixiang,Xu Hanbin.Journal of Mountain Science,1999,17(3):235-239.
[7]Chowdhury R N,Xu D W.Rational polynomial technique in slope-reliability analysis[J].Journal of Geotechnical Engineering,1993,119(12):1910-1928.
[8]陈新民,罗国煜.基于经验的边坡稳定性灰色系统分析与评价[J].岩土工程学报,1999,21(5):638-641.Chen Xinmin,Luo Guoyu.Chinese Journal of Geotechnical Engineering,1999,21(5):638-641.
[9]Sah N K,Sheorey P R,Upadhyaya L N.Maximum likelihood estimation of slope stability[J].International Journal of Rock Mechanics and Mining Sciences&Geomechanics Abstracts,1994,31(1):47-53.
[10]马洪生,胡卸文.神经网络在边坡稳定性分析中的应用[J].中国地质灾害与防治学报,1999,10(1):49-53.Ma Hongsheng,Hu Xiewen.The Chinese Journal of Geological Hazard and Control,1999,10(1):49-53.
[11]Wang H B,Xu W Y,Xu R C.Slope stability evaluation using back propagation neural networks[J].Engineering Geology Journal,2005,80(3-4):302-315.
[12]Saaty T L.The analytic hierarchy process[M].New York:McGraw-Hill International Book Company,1980.
[13]鲁光银,朱自强,李华,等.公路隧道岩体质量分级的模糊层次分析法[J].中南大学学报:自然科学版,2008,39(2):368-374.Lu Guangyin,Zhu Ziqiang,Li Hua,et al.Journal of Central South University:Natural Science Edition,2008,39(2):368-374.
[14]丁慧彦,王余庆,孙进忠,等.地震崩滑预测方法及其工程应用研究[J].工程地质学报,2000,8(4):475-480.Ding Huiyan,Wang Yuqing,Sun Jinzhong,et al.Journal of Engineering Geology,2000,8(4):475-480.
[15]沈良峰,张永红,廖继原.边坡稳定性分析预测的综合指标模型[J].建筑科学,2003,19(3):30-33.Shen Liangfeng,Zhang Yonghong,Liao Jiyuan.Building Science,2003,19(3):30-33.
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