乌尉高速公路边坡稳定性综合评价
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摘要
针对乌尉(乌鲁木齐至尉犁)高速公路地处高寒、高海拔、高地震烈度区,地质环境条件复杂的特点,提出一种基于多判据的边坡稳定性模糊综合评价方法。首先,分析研究三高地区公路沿线工程地质条件、边坡岩体结构特征及其变形破坏模式。在此基础上,以TSMR评价体系为框架,考虑地震荷载对边坡稳定性的影响,引入地震作用影响系数β,建立了适用于"三高"地区公路边坡岩体质量分级体系THRSMR;基于边坡可靠性分析理论,归纳总结Monte Carlo法的操作步骤,并借助GEO-SLOPE软件,给出各研究边坡的可靠度指标与失效概率;最后,将定性评价、极限平衡分析、可靠度分析和数值计算的结果分别作为基础指标,采用模糊综合评价方法对每一边坡的边坡稳定性,给出进一步量化结论。其结果对类似地区高速公路边坡稳定性评价具有一定的参考价值。
A fuzzy comprehensive evaluation method for slope stability based on multi-criteria is proposed for the characteristics of Wu—Yu highway,which is located in the frigid,high altitude,high seismic intensity area with complicated geological environment condition. Firstly,the engineering geological conditions,the structural characteristics of the slope rock and the deformation and failure modes of the slope along the highway are analyzed. The TSMR evaluation system is taken as the framework,the influence of the seismic load on the slope stability is taken into account,and the seismic coefficient β is introduced and the slope rock mass classification system THRSMR suitable for the "three high"highway is also established. Based on the theory of slope reliability analysis,the steps of the Monte Carlo method are summarized,and the reliability index and failure probability of each typical slope are given by GEO-SLOPE software. Finally,the results of qualitative evaluation,limit equilibrium analysis,reliability analysis and numerical calculation are taken as the basic indexes,and the fuzzy comprehensive evaluation method is used to give further quantitative conclusions on the slope stability of each slope. The results have certain reference value for highway slope stability evaluation in the "three high"region.
A fuzzy comprehensive evaluation method for slope stability based on multi-criteria is proposed for the characteristics of Wu—Yu highway,which is located in the frigid,high altitude,high seismic intensity area with complicated geological environment condition. Firstly,the engineering geological conditions,the structural characteristics of the slope rock and the deformation and failure modes of the slope along the highway are analyzed. The TSMR evaluation system is taken as the framework,the influence of the seismic load on the slope stability is taken into account,and the seismic coefficient β is introduced and the slope rock mass classification system THRSMR suitable for the "three high"highway is also established. Based on the theory of slope reliability analysis,the steps of the Monte Carlo method are summarized,and the reliability index and failure probability of each typical slope are given by GEO-SLOPE software. Finally,the results of qualitative evaluation,limit equilibrium analysis,reliability analysis and numerical calculation are taken as the basic indexes,and the fuzzy comprehensive evaluation method is used to give further quantitative conclusions on the slope stability of each slope. The results have certain reference value for highway slope stability evaluation in the "three high"region.
引文
[1]张彪,戴兴国.基于有限区间云模型和距离判别赋权的岩体质量分类模型[J].水文地质工程地质,2017,44(5):150-157.[ZHANG B,DAI X G.A classification model of rock mass based on finite interval cloud model and distance discrimination weighting[J].Hydrogeology&Engineering Geology,2017,44(5):150-157.(in Chinese)]
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[6]张元才,黄润秋,赵立冬,等.天山公路边坡岩体质量评价TSMR体系研究[J].岩石力学与工程学报,2010,29(3):617-623.[ZHANG Y C,HUANG R Q,ZHAO L D,et al.Study of Tianshan slope rock mass rating(TSRM)system[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(3):617-623.(in Chinese)]
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[9]宋新龙,王宇,汪灿.岩质边坡随机楔体稳定性分析的Monte-Carlo模拟[J].安全与环境工程,2012,19(1):112-116.[SONG X L,WANG Y,WANG C.Random wedge block stability analysis with MonteCarlo simulation for rock slope[J].Safety and Environmental Engineering,2012,19(1):112-116.(in Chinese)]
[10]王宇,李晓.基于GH-B准则的节理边坡模糊破坏概率研究[J].水文地质工程地质,2013,40(3):41-47.[WANG Y,LI X.Research on the joint slope fuzzy failure probability based on General Hoek-Brown criterion[J].Hydrogeology&Engineering Geology,2013,40(3):41-47.(in Chinese)]
[11]徐卫亚,蒋中明,石安池.基于模糊集理论的边坡稳定性分析[J].岩土工程学报,2003,25(4):409-413.[XU W Y,JIANG Z M,SHI A C.Slope stability analysis using fuzzy sets theory[J].Chinese Journal of Geotechnical Engineering,2003,25(4):409-413.(in Chinese)]
[12]李元松,陈文峰,李新平,等.基于模糊神经网络的边坡稳定性评价方法[J].武汉理工大学学报,2013,25(1):113-118.[LI Y S,CHEN W F,LI X P,et al.Stability assessment of rock slope based on fuzzy neural network[J].Journal of Wuhan university technology,2013,25(1):113-118.(in Chinese)]
[13]张军,陈征宙,刘登峰.基于云模型的岩质边坡稳定性评估研究[J].水文地质工程地质,2014,41(6):44-50.[ZHANG J,CHEN Z Z,LIU D F.Stability evaluation of a rock slope based on the cloud model[J].Hydrogeology&Engineering Geology,2014,41(6):44-50.(in Chinese)]
[14]刘艳辉,刘传正,唐灿,等.基于确定性系数模型的地质灾害多因子权重计算方法[J].中国地质灾害与防治学报,2015,26(1):92-97.[LIU Y H,LIU C Z,TANG C,et al.CF-based multi-factor overlay method to determine weights of the factors for geohazards[J].The Chinese Journal of Geological Hazard and Control,2015,26(1):92-97.(in Chinese)]
[15]王俊豪,金华丽,倪天翔,等.基于层次分析法的模糊综合评判模型在康乐县泥石流沟危险性评价中的应用[J].中国地质灾害与防治学报,2017,28(3):52-57.[WANG J H,JIN H L,NI T X,et al.The application of fuzzy comprehensive evaluation model based on analytic hierarchy process in risk assessment of debrisflow gully in Kangle County[J].The Chinese Journal of Geological Hazard and Control,2017,28(3):52-57.(in Chinese)]
[16]陈桂忠.模糊综合分析在场地土壤重金属评价中的应用[J].水文地质工程地质,2015,42(4):141-143.[CHEN G.Fuzzy comprehensive assessment of heavy metal pollution[J].Hydrogeology&Engineering Geology,2015,42(4):141-143.(in Chinese)]
[2]黄勇.高寒山区岩体冻融力学行为及崩塌机制研究-以天山公路边坡为例[D].成都:成都理工大学,2012.[HUANG Y.Research on Freeze-thaw mechanical behavior of rock mass and collapse formation mechanism along the highway located in alpine and strong earthquake regions-taking side slope of Tianshan highway as an example[D].Chengdu:Chengdu University of Technology,2012.(in Chinese)]
[3]石豫川,王哲,万国荣,等.山区高等级公路边坡岩体分级研究[J].岩石力学与工程学报,2005,24(6):939-944.[SHI Y C,WANG Z,WAN G R,etal.Study of mountain highway slope mass rating[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(6):939-944.(in Chinese)]
[4]许宏发,陈锋,王斌,等.岩体分级BQ与RMR的关系及其力学参数估计[J].岩土工程学报,2014,36(1):195-198.[XU H F,CHEN F,WANG B,et al.Relationship between RMR and BQ for rock mass classification and estimation of its mechanical parameters[J].Chinese Journal of Geotechnical Engineering,2014,36(1):195-198.(in Chinese)]
[5]GB18306—2015中国地震动参数区划国[S].北京:中国计划出版社,2016.[GB18306—2015Seismic ground motion parameters zonation map of China[S].Beijing:China Planning Press,2016.(in Chinese)]
[6]张元才,黄润秋,赵立冬,等.天山公路边坡岩体质量评价TSMR体系研究[J].岩石力学与工程学报,2010,29(3):617-623.[ZHANG Y C,HUANG R Q,ZHAO L D,et al.Study of Tianshan slope rock mass rating(TSRM)system[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(3):617-623.(in Chinese)]
[7]邬爱清,柳赋铮.国标《工程岩体分级标准》的应用与进展[J].岩石力学与工程学报,2012,31(8):1531-1523.[WU A Q,LIU F Z.Advancement and application of the standard of engineering classification of rock masses[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(8):1531-1523.(in Chinese)]
[8]张菊连,沈明荣.改进的水电边坡岩体稳定性分级法[J].水文地质工程地质,2011,38(2):39-45.[ZHANG J L,SHEN M G.Modified hydropower slope rock mass stability rating system[J].Hydrogelogy&Engineering Geology,2011,38(2):39-45.(in Chinese)]
[9]宋新龙,王宇,汪灿.岩质边坡随机楔体稳定性分析的Monte-Carlo模拟[J].安全与环境工程,2012,19(1):112-116.[SONG X L,WANG Y,WANG C.Random wedge block stability analysis with MonteCarlo simulation for rock slope[J].Safety and Environmental Engineering,2012,19(1):112-116.(in Chinese)]
[10]王宇,李晓.基于GH-B准则的节理边坡模糊破坏概率研究[J].水文地质工程地质,2013,40(3):41-47.[WANG Y,LI X.Research on the joint slope fuzzy failure probability based on General Hoek-Brown criterion[J].Hydrogeology&Engineering Geology,2013,40(3):41-47.(in Chinese)]
[11]徐卫亚,蒋中明,石安池.基于模糊集理论的边坡稳定性分析[J].岩土工程学报,2003,25(4):409-413.[XU W Y,JIANG Z M,SHI A C.Slope stability analysis using fuzzy sets theory[J].Chinese Journal of Geotechnical Engineering,2003,25(4):409-413.(in Chinese)]
[12]李元松,陈文峰,李新平,等.基于模糊神经网络的边坡稳定性评价方法[J].武汉理工大学学报,2013,25(1):113-118.[LI Y S,CHEN W F,LI X P,et al.Stability assessment of rock slope based on fuzzy neural network[J].Journal of Wuhan university technology,2013,25(1):113-118.(in Chinese)]
[13]张军,陈征宙,刘登峰.基于云模型的岩质边坡稳定性评估研究[J].水文地质工程地质,2014,41(6):44-50.[ZHANG J,CHEN Z Z,LIU D F.Stability evaluation of a rock slope based on the cloud model[J].Hydrogeology&Engineering Geology,2014,41(6):44-50.(in Chinese)]
[14]刘艳辉,刘传正,唐灿,等.基于确定性系数模型的地质灾害多因子权重计算方法[J].中国地质灾害与防治学报,2015,26(1):92-97.[LIU Y H,LIU C Z,TANG C,et al.CF-based multi-factor overlay method to determine weights of the factors for geohazards[J].The Chinese Journal of Geological Hazard and Control,2015,26(1):92-97.(in Chinese)]
[15]王俊豪,金华丽,倪天翔,等.基于层次分析法的模糊综合评判模型在康乐县泥石流沟危险性评价中的应用[J].中国地质灾害与防治学报,2017,28(3):52-57.[WANG J H,JIN H L,NI T X,et al.The application of fuzzy comprehensive evaluation model based on analytic hierarchy process in risk assessment of debrisflow gully in Kangle County[J].The Chinese Journal of Geological Hazard and Control,2017,28(3):52-57.(in Chinese)]
[16]陈桂忠.模糊综合分析在场地土壤重金属评价中的应用[J].水文地质工程地质,2015,42(4):141-143.[CHEN G.Fuzzy comprehensive assessment of heavy metal pollution[J].Hydrogeology&Engineering Geology,2015,42(4):141-143.(in Chinese)]