路堑边坡传递系数法与改进
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摘要
传统的边坡稳定性系数计算方法假定滑坡块条间相互作用力方向与上一块条底滑面的方向相同,但当滑面较陡与较缓或有地下水作用时,条间力方向不能保证一直与底移滑面方向相同,从而使计算有所偏差。为此提出了改进的传递系数法,推导出静水和动水作用情况下传递系数法的计算公式。最后通过新传递系数法对假定边坡稳定性系数进行计算,并与其他稳定性系数计算法计算出的系数进行对比,结果显示改进的传递系数法具有一定的精度及可靠性。
The traditional calculation method of slope stability coefficient assumes that the direction of the interaction force between slide blocks is same with that of the sliding surface of last block. However,when the sliding surface is relatively steep or gradual,or when the ground water is involved,the same direction cannot be guaranteed,which leads to the calculation deviation. Thereupon an improved calculation method of the transfer coefficient is put forward in which the effect of still water and flowing water is taken into consideration. Finally it comes to a conclusion that the result from the calculation method of the transfer coefficient is accurate and reliable to a certain extent since the assumed slope stability coefficient obtained from this calculation method is more precise in contract with that from other calculation methods.
The traditional calculation method of slope stability coefficient assumes that the direction of the interaction force between slide blocks is same with that of the sliding surface of last block. However,when the sliding surface is relatively steep or gradual,or when the ground water is involved,the same direction cannot be guaranteed,which leads to the calculation deviation. Thereupon an improved calculation method of the transfer coefficient is put forward in which the effect of still water and flowing water is taken into consideration. Finally it comes to a conclusion that the result from the calculation method of the transfer coefficient is accurate and reliable to a certain extent since the assumed slope stability coefficient obtained from this calculation method is more precise in contract with that from other calculation methods.
引文
[1]陈祖义.岩质边坡稳定性分析——原理方法程序[M].北京:中国水利水电出版社,2005.CHEN Zu-yi.Stability analysis of rock slope:Principle,method and procedure[M].Beijing:China Water&Power Press,2005.
[2]景锋.岩质高边坡稳定性研究[D].武汉:武汉大学,2008.JING Feng.Stability study on rock high slope[D].Wuhan:Wuhan University,2008.
[3]冯文娟,李建林,杨学堂.岩土体边坡稳定性分析计算方法的研究进展[J].黑龙江水专学报,2005,32(2):10~13.FENG Wen-juan,LI Jian-lin,YANG Xue-tang.Study on the calculation methods of the slope stability analysis[J].Journal of Heilongjiang Hydraulic Engineering College,2005,32(2):10~13.
[4]黄志斌.濒危岩质高陡边坡稳定性及处置技术研究[D].长沙:中南大学,2007.HUANG Zhi-bin.Study on stability of dangerous rock high slope and processing technology[D].Changsha:Central South University,2007.
[5]赵尚毅,郑颖人,时卫民,等.用有限元强度折减法求边坡稳定安全系数[J].岩土工程学报,2002,24(3):343~346.ZHAO Shang-yi,ZHENG Ying-ren,SHI Wei-min,et al.Analysis on safety factor of slope by strength reduction FEM[J].Chinese Journal of Geotechnical Engineering,2002,24(3):343~346.
[6]王肇慧,肖盛燮,刘文方.边坡稳定性计算方法的对比分析[J].重庆交通学院学报,2005,24(6):99~103.WANG Zhao-hui,XIAO Sheng-xie,LIU Wen-fang.Comparison of analytical methods for slope stability[J].Journal of Chongqing Jiaotong University,2005,24(6):99~103.
[7]朱大勇,李焯芬,黄茂松,等.对3种著名边坡稳定性计算方法的改进[J].岩石力学与工程学报,2005,24(2):183~194.ZHU Da-yong,LI Chao-fen,HUANG Mao-song,et al.Modifications to three well-known methods of slope stability analysis[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(2):183~194.
[8]刘才华,陈从新,冯夏庭,等.地下水对库岸边坡稳定性的影响[J].岩土力学,2005,26(3):419~422.LIU Cai-hua,CHEN Cong-xin,FENG Xia-ting,et al.Effect of groundwater on stability of slopes at reservoir bank[J].Rock and Soil Mechanics,2005,26(3):419~422.
[9]邓科.边坡稳定性计算方法的适用条件及分析比较[J].灾害与防治工程,2005,(2):12~16.DENG Ke.Comparison of analytical methods for slope stability[J].Disaster and Control Engineering,2005,(2):12~16.
[10]李领先.基于极限平衡法的边坡稳定性计算[J].科技信息,2009,(12):258~259.LI Ling-xian.Slope stability calculation based on limit equilibrium method[J].Science and Technology Information,2009,(12):258~259.
[11]邓海政.公路高边坡稳定性计算方法的对比分析[J].黑龙江科技信息,2008,(20):222.DENG Hai-zheng.Comparison analysis of calculating methods for high slope stability along highway[J].Heilongjiang Science and Technology Information,2008,(20):222.
[2]景锋.岩质高边坡稳定性研究[D].武汉:武汉大学,2008.JING Feng.Stability study on rock high slope[D].Wuhan:Wuhan University,2008.
[3]冯文娟,李建林,杨学堂.岩土体边坡稳定性分析计算方法的研究进展[J].黑龙江水专学报,2005,32(2):10~13.FENG Wen-juan,LI Jian-lin,YANG Xue-tang.Study on the calculation methods of the slope stability analysis[J].Journal of Heilongjiang Hydraulic Engineering College,2005,32(2):10~13.
[4]黄志斌.濒危岩质高陡边坡稳定性及处置技术研究[D].长沙:中南大学,2007.HUANG Zhi-bin.Study on stability of dangerous rock high slope and processing technology[D].Changsha:Central South University,2007.
[5]赵尚毅,郑颖人,时卫民,等.用有限元强度折减法求边坡稳定安全系数[J].岩土工程学报,2002,24(3):343~346.ZHAO Shang-yi,ZHENG Ying-ren,SHI Wei-min,et al.Analysis on safety factor of slope by strength reduction FEM[J].Chinese Journal of Geotechnical Engineering,2002,24(3):343~346.
[6]王肇慧,肖盛燮,刘文方.边坡稳定性计算方法的对比分析[J].重庆交通学院学报,2005,24(6):99~103.WANG Zhao-hui,XIAO Sheng-xie,LIU Wen-fang.Comparison of analytical methods for slope stability[J].Journal of Chongqing Jiaotong University,2005,24(6):99~103.
[7]朱大勇,李焯芬,黄茂松,等.对3种著名边坡稳定性计算方法的改进[J].岩石力学与工程学报,2005,24(2):183~194.ZHU Da-yong,LI Chao-fen,HUANG Mao-song,et al.Modifications to three well-known methods of slope stability analysis[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(2):183~194.
[8]刘才华,陈从新,冯夏庭,等.地下水对库岸边坡稳定性的影响[J].岩土力学,2005,26(3):419~422.LIU Cai-hua,CHEN Cong-xin,FENG Xia-ting,et al.Effect of groundwater on stability of slopes at reservoir bank[J].Rock and Soil Mechanics,2005,26(3):419~422.
[9]邓科.边坡稳定性计算方法的适用条件及分析比较[J].灾害与防治工程,2005,(2):12~16.DENG Ke.Comparison of analytical methods for slope stability[J].Disaster and Control Engineering,2005,(2):12~16.
[10]李领先.基于极限平衡法的边坡稳定性计算[J].科技信息,2009,(12):258~259.LI Ling-xian.Slope stability calculation based on limit equilibrium method[J].Science and Technology Information,2009,(12):258~259.
[11]邓海政.公路高边坡稳定性计算方法的对比分析[J].黑龙江科技信息,2008,(20):222.DENG Hai-zheng.Comparison analysis of calculating methods for high slope stability along highway[J].Heilongjiang Science and Technology Information,2008,(20):222.