基于模糊集理论与CSMR的岩质边坡稳定性分析
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摘要
将模糊集理论中模糊推理系统与CSMR岩质边坡稳定性综合评价方法相结合形成FCSMR评价方法.其步骤为:首先利用模糊推理系统处理岩质边坡稳定性影响因素所具有的模糊性,然后用CSMR评价方法对岩质边坡稳定性进行评价。将此方法评价大朝山水电站进水口边坡稳定性并与CSMR评价方法相比较。研究结果表明:FCSMR法的评价结果是边坡可能发生平面或圆弧形类似土质滑坡,CSMR评价方法的结果是边坡可能发生大规模平面滑动或楔形体滑动;利用理正软件计算得到发生平面滑动的安全系数为1.918,发生圆弧形滑动的安全系数为1.493,说明边坡发生圆弧形滑动的可能性更大,表明FCSMR评价方法比传统的CSMR评价方法的评价结果更加合理。
The FCSMR classification was formed by combining the fuzzy inference system of fuzzy set theory with CSMR classification.Firstly,the fuzzy inference system was used to deal with the factors' fuzziness of rock slope stability.Secondly,the CSMR classification was used to evaluate stability of rock slope.Both the CSMR classification and FCSMR classification were used to assess the stability of Dachaoshan Hydropower Station water inlet slope.A big planar or soil-like failure was validated by using FCSMR classification while a planar of big wedges failure was validated by using CSMR classification.The results show that planar failure's safety factor is 1.918 and soil-like failure's safety factor is 1.493,which indicates that soil-like failure's probability is higher than big planar and FCSMR classification is more reasonable than CSMR classification.
The FCSMR classification was formed by combining the fuzzy inference system of fuzzy set theory with CSMR classification.Firstly,the fuzzy inference system was used to deal with the factors' fuzziness of rock slope stability.Secondly,the CSMR classification was used to evaluate stability of rock slope.Both the CSMR classification and FCSMR classification were used to assess the stability of Dachaoshan Hydropower Station water inlet slope.A big planar or soil-like failure was validated by using FCSMR classification while a planar of big wedges failure was validated by using CSMR classification.The results show that planar failure's safety factor is 1.918 and soil-like failure's safety factor is 1.493,which indicates that soil-like failure's probability is higher than big planar and FCSMR classification is more reasonable than CSMR classification.
引文
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[15]李远耀,殷坤龙,代云霞.基于广义Hoek-Brown准则强度折减法的岩坡稳定性分析[J].岩土力学,2008,29(Z1):347-352.LI Yuan-yao,YIN Kun-long,DAI Yun-xia.Stability analysis ofrock slope by strength reduction method based on generalizedHoek-Brown failure criterion[J].Rock and Soil Mechanics,2008,29(Z1):347-352.
[2]李文秀,梁旭黎,赵胜涛.地下水影响下裂隙岩质边坡变形的Fuzzy测度分析[J].岩石力学与工程学报,2005,24(2):302-306.LI Wen-xiu,LIANG Xu-li,ZHAO Sheng-tao.Fuzzy measuresanalysis for displacements and deformations of jointed rockslope under influence of groundwater[J].Chinese Journal ofRock Mechanics and Engineering,2005,24(2):302-306.
[3]雷远见,王水林.基于离散元的强度折减法分析岩质边坡稳定性[J].岩土力学,2006,27(10):1693-1698.LEI Yuan-jian,WANG Shui-lin.Stability analysis of jointedrock slope by strength reduction based on UDEC[J].Rock andSoil Mechanics,2006,27(10):1693-1698.
[4]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 Wei-ya,JIANG Zhong-ming,SHI An-chi.Slope stabilityanalysis using fuzzy sets theory[J].Chinese Journal ofGeotechnical Engineering,2003,25(4):409-413.
[5]马毅,王希良,刘振,等.基于模糊因素的岩质边坡地震稳定性多模型组合评价[J].岩土力学,2011,32(Z1):624-629.MA Yi,WANG Xi-liang,LIU Zhen,et al.Multiple modelcombination evaluation of seismic stability of rock slopes basedon fuzzy factors[J].Rock and Soil Mechanics,2011,32(Z1):624-629.
[6]冯树荣,赵海斌,蒋中明.节理岩体边坡稳定性分析新方法[J].岩土力学,2009,30(6):1639-1642.FENG Shu-rong,ZHAO Hai-bin,JIANG Zhong-ming.A newmethod of stability analysis of jointed rock slop[J].Rock andSoil Mechanics,2009,30(6):1639-1642.
[7]张晓晖,王辉,戴福初,等.基于关系矩阵和模糊集合的斜坡稳定性综合评价[J].岩石力学与工程学报,2000,19(3):346-351.ZHANG Xiao-hui,WANG Hui,DAI Fu-chu,et al.Comprehensive evaluation of slope stability using interactionmatrix and fuzzy sets[J].Chinese Journal of Rock Mechanicsand Engineering,2000,19(3):346-351.
[8]Romanam.New adjustment ratings for application of Bieniawskiclassification to slopes[C]//International Symposium on the Rolefor Rock Mechanics.Zacatecas:ISRM,1985:49-53.
[9]Bieniawski Z T.Engineering classification of joint rockmasses[J].The Civil Engineer in South Africa,1973,15(12):335-343.
[10]邱恩喜,谢强,石岳,等.修正SMR法在红层软岩边坡中的应用[J].岩土力学,2009,30(7):2109-2113.QIU En-xi,XIE Qiang,SHI Yue,et al.Application of modifiedSMR to redbed soft rock slopes[J].Rock and Soil Mechanics,2009,30(7):2109-2113.
[11]孙东亚,陈祖煜,杜伯辉,等.边坡稳定评价方法RMR-SMR体系及其修正[J].岩石力学与工程学报,1997,16(4):297-304.SUN Dong-ya,CHEN Zu-yu,DU Bo-hui,et al.Modifications tothe RMR SMR system for slop stability evaluation[J].ChineseJournal of Rock Mechanics and Engineering,1997,16(4):297-304.
[12]闻新,周露,李江东,等.MATLAB模糊逻辑工具箱的分析与应用[M].北京:科学出版社,2001:37-46.WEN Xin,ZHOU Lu,LI Jiang-dong,et al.Analysis andapplication of MATLAB fuzzy logic toolbox[M].Beijing:Science Press,2001:37-46.
[13]陈乐求,彭振斌,陈伟,等.基于模糊控制的人工神经网络模拟在土质边坡安全预测中的应用[J].中南大学学报:自然科学版,2009,40(5):1381-1387.CHEN Le-qiu,PENG Zhen-bin,CHEN Wei,et al.Artificialneural network simulation on prediction of clay slope stabilitybased on fuzzy controller[J].Journal of Central of SouthUniversity:Science and Technology,2009,40(5):1381-1387.
[14]周润景,张丽娜.基于MATLAB与fuzzy TECH的模糊与神经网络设计[M].北京:电子工业出版社,2010:73-87.ZHOU Run-jing,ZHANG Li-na.Fuzzy and neural networkdesign based on MATLAB and fuzzy TECH[M].Beijing:Electronics Industry Press,2010:73-87.
[15]李远耀,殷坤龙,代云霞.基于广义Hoek-Brown准则强度折减法的岩坡稳定性分析[J].岩土力学,2008,29(Z1):347-352.LI Yuan-yao,YIN Kun-long,DAI Yun-xia.Stability analysis ofrock slope by strength reduction method based on generalizedHoek-Brown failure criterion[J].Rock and Soil Mechanics,2008,29(Z1):347-352.
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