川藏公路田妥—怒江段某滑坡稳定性分析与整治
|
摘要
结合国道318线川藏公路田妥一怒江段K3668+700～K3668+790滑坡的基本状况,对滑坡的成因进行了分析。对K3668+715断面建立了有限元分析模型,利用有限元强度折减法,计算分析了该段滑坡在重力场和地震作用下的稳定性,计算分析求得该滑坡整治前在重力场和地震作用下的稳定安全系数分别为0.99和0.93,滑坡处于不稳定的滑动状态,应及时对该段滑坡进行整治。提出了合理的整治方案并进行了安全性评价,结果表明整治后滑坡的安全系数大于设计安全系。
With a combination of basic conditions for the landslide in section from Tiantuo to Nujiang on Sichuan-Tibet State Road 318,that is K3668 +700 - K3668 +790,the causes of the landslide have been analyzed.The finite element analysis model of the landslide in K3668 +715 section is established.The stability of the landslide in gravitational field and earthquake has been analyzed by using the finite element strength reduction method.The calculation indicates that the safety coefficients of the landslide in gravitational field and earthquake respectively are 0.99 and 0.93 respectively before regulation. So the landslide is in an unstable state and the regulation project should be taken in time.Advisable regulation scheme of the landslide is put forward and the results show that the stability safety coefficients are greater than the design ones after the regulation.
With a combination of basic conditions for the landslide in section from Tiantuo to Nujiang on Sichuan-Tibet State Road 318,that is K3668 +700 - K3668 +790,the causes of the landslide have been analyzed.The finite element analysis model of the landslide in K3668 +715 section is established.The stability of the landslide in gravitational field and earthquake has been analyzed by using the finite element strength reduction method.The calculation indicates that the safety coefficients of the landslide in gravitational field and earthquake respectively are 0.99 and 0.93 respectively before regulation. So the landslide is in an unstable state and the regulation project should be taken in time.Advisable regulation scheme of the landslide is put forward and the results show that the stability safety coefficients are greater than the design ones after the regulation.
引文
[1]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.
[2]郑颖人,赵尚毅,肖佑昆.用有限元强度折减法分析具有非贯通结构面岩质边坡稳定性[J].地质与勘探,2003,39(8):12- 16. ZHENG Ying-ren,ZHAO Shang-yi,XIAO You-kun.Jointed rock slope stability analysis by strength reduction FEM[J].Geology and Prospecting,2003,39(8 ):12 - 16.
[3]Zienkiewicz 0 C,Humpheson C,Lewis R W.Associated and non-associated visco-plasticity in soil mechanics[J].Geotechnique, 1975,25(4):671 -689.
[4]田振刚.有限元强度折减法在边坡计算中失稳判据的讨论[J].公路交通技术,2009,4(11):29-31. TIAN Zhen-gang.Discussion on destabilization criteria of finite element strength reduction method in slope calculation[J].Technology of Highway and Transport,2009,4(11):29 - 31.
[5]郑颖人,赵尚毅.岩土工程极限分析有限元法及其应用[J].土木工程学报,2005,38(1):91-98. ZHEN Ying-ren,ZHAO Shang-yi,Limit state finite element method for geotechnical engineering analysis and its applications[J]. China Civil Engineering Journal,2005,38(1 ):91 -98.
[6]郑颖人,赵尚毅.有限元强度折减法在土坡与岩坡中的应用[J].岩石力学与工程学报,2004,23(19):3381-3388. ZHEN Ying-ren,Zhao Shang-yi.Application of strength reduction fem in soil and rock slope[J]Chinese Journal of Rock Mechanics and Engineering,2004,23(19):3381 -3388.
[7]董玉文,任青文.屈服准则对边坡稳定有限元分析的影响研究[J].水电能源科学,2009,27(1):137-139. DONG Yu-wen,REN Qing-wen.Influence of yield criterion on anlysis of slope stabilization by FEM[J].Water Resources and Power, 2009,27(1).137 -139.
[8]李垠,苏凯,李杰.Mohr-Coulomb等面积圆屈服准则在边坡稳定分析中的应用[J].大地测量与地球动力学,2009,29(1):135 -139. LI Yin,SU Kai,LI Jie.Application of mohr-coulomb equivalent area yield criterion to slope stability analysis[J].Journal of Geodesy and Geodynamics,2009,29(1):135 - 139.
[9]廖麦秋.预应力锚索-抗滑桩联合支护技术在高速公路路堤边坡加固工程中的应用[J].重庆建筑,2009,22(1):22-25. LIAO Mai-qiu.Application of prestressed anchor-cable and antislide pile combined support technology in highway embankment slope reinforcement project[J].Chongqing Architecture,2009,22 (1):22 -25.
[10]巨能攀,赵建军,邓辉,等.公路高边坡稳定性评价及支护优化设计[J].岩石力学与工程学报,2009,28(6):1152-1161. JU Neng-pan,ZHAO Jian-jun,DENG Hui.et al.Stability evaluation of high slope for highways and optimized support design[J]. Chinese Journal of Rock Mechanics and Engineering,2009,28 (6).1152 -1161
[11]Singh V K,Singh J K,Kumar A.Geotechnical study for optimizing the slope design of a deep open-pit mine,India[J].Bulletin of Engineering Geology and the Environment,2005,64(3 ):303 - 309.
[12]王宏,钟宁,王志超.重庆市高速公路挖断村滑坡的成因分析与治理措施[J].重庆交通大学学报:自然科学版,2010,29(1): 85-89. WANG Hong.ZHONC Ning.WANG Zhi-chao.Causes analysis and control measures of waduan village landslide on feng-yun expressway in Chongqing[J].Journal of Chongqing Jiaotong University: Natural Science,2010,29(1):85 - 89.
[2]郑颖人,赵尚毅,肖佑昆.用有限元强度折减法分析具有非贯通结构面岩质边坡稳定性[J].地质与勘探,2003,39(8):12- 16. ZHENG Ying-ren,ZHAO Shang-yi,XIAO You-kun.Jointed rock slope stability analysis by strength reduction FEM[J].Geology and Prospecting,2003,39(8 ):12 - 16.
[3]Zienkiewicz 0 C,Humpheson C,Lewis R W.Associated and non-associated visco-plasticity in soil mechanics[J].Geotechnique, 1975,25(4):671 -689.
[4]田振刚.有限元强度折减法在边坡计算中失稳判据的讨论[J].公路交通技术,2009,4(11):29-31. TIAN Zhen-gang.Discussion on destabilization criteria of finite element strength reduction method in slope calculation[J].Technology of Highway and Transport,2009,4(11):29 - 31.
[5]郑颖人,赵尚毅.岩土工程极限分析有限元法及其应用[J].土木工程学报,2005,38(1):91-98. ZHEN Ying-ren,ZHAO Shang-yi,Limit state finite element method for geotechnical engineering analysis and its applications[J]. China Civil Engineering Journal,2005,38(1 ):91 -98.
[6]郑颖人,赵尚毅.有限元强度折减法在土坡与岩坡中的应用[J].岩石力学与工程学报,2004,23(19):3381-3388. ZHEN Ying-ren,Zhao Shang-yi.Application of strength reduction fem in soil and rock slope[J]Chinese Journal of Rock Mechanics and Engineering,2004,23(19):3381 -3388.
[7]董玉文,任青文.屈服准则对边坡稳定有限元分析的影响研究[J].水电能源科学,2009,27(1):137-139. DONG Yu-wen,REN Qing-wen.Influence of yield criterion on anlysis of slope stabilization by FEM[J].Water Resources and Power, 2009,27(1).137 -139.
[8]李垠,苏凯,李杰.Mohr-Coulomb等面积圆屈服准则在边坡稳定分析中的应用[J].大地测量与地球动力学,2009,29(1):135 -139. LI Yin,SU Kai,LI Jie.Application of mohr-coulomb equivalent area yield criterion to slope stability analysis[J].Journal of Geodesy and Geodynamics,2009,29(1):135 - 139.
[9]廖麦秋.预应力锚索-抗滑桩联合支护技术在高速公路路堤边坡加固工程中的应用[J].重庆建筑,2009,22(1):22-25. LIAO Mai-qiu.Application of prestressed anchor-cable and antislide pile combined support technology in highway embankment slope reinforcement project[J].Chongqing Architecture,2009,22 (1):22 -25.
[10]巨能攀,赵建军,邓辉,等.公路高边坡稳定性评价及支护优化设计[J].岩石力学与工程学报,2009,28(6):1152-1161. JU Neng-pan,ZHAO Jian-jun,DENG Hui.et al.Stability evaluation of high slope for highways and optimized support design[J]. Chinese Journal of Rock Mechanics and Engineering,2009,28 (6).1152 -1161
[11]Singh V K,Singh J K,Kumar A.Geotechnical study for optimizing the slope design of a deep open-pit mine,India[J].Bulletin of Engineering Geology and the Environment,2005,64(3 ):303 - 309.
[12]王宏,钟宁,王志超.重庆市高速公路挖断村滑坡的成因分析与治理措施[J].重庆交通大学学报:自然科学版,2010,29(1): 85-89. WANG Hong.ZHONC Ning.WANG Zhi-chao.Causes analysis and control measures of waduan village landslide on feng-yun expressway in Chongqing[J].Journal of Chongqing Jiaotong University: Natural Science,2010,29(1):85 - 89.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心