竹城公路顺层岩质边坡稳定性及工程设计研究
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摘要
层状结构边坡分为:水平坡、顺层坡和逆层坡,其中顺层坡最容易发生失稳破坏。对于顺层岩质边坡,国内外目前对其的失稳机理、稳定性评价与工程设计己有一定的研究,取得了一定的认识,但尚不能将研究成果很好的用于实际工程中。
论文对顺层岩质边坡稳定性的影响因素进行了归纳总结;根据顺层岩质边坡结构特征进行了分类,并对其破坏模式进行了探讨;介绍了常用的一些顺层岩质边坡稳定性分析方法,分析了这些方法的适用性及优缺点;对顺层岩质边坡的工程设计进行了研究,归纳了顺层岩质边坡的工程设计流程及10条工程设计建议,以便于指导工程设计施工;最后将研究成果应用于竹城公路K82-K83段边坡,在对该段边坡采用赤平极射投影方法和FLAC3D数值模拟方法进行稳定性分析评价后,综合考虑多方面因素对不稳定边坡段提出了全长注浆锚杆长短交错布置的支护方案。
Layered slopes included: The level slopes, bedding slopes and inverse slopes, in which bedding slopes are destroyed early. As to bedding slopes, at present the collapsing mechanism, the stability appraises and the project designs were preliminary researched at home and abroad, certain cognition was gotten, but still not put studying achievement into actual project with good effects.
Firstly stability effect factor of bedding rock slopes were summarized; secondly, according to structure pattern bedding rock slopes were classified, and destroying models were discussed; subsequently some stability analysis methods of bedding rock slopes were introduced, applicability and merits and faults of these methods were analyzed; then the engineering design of bedding rock slopes were studied, engineering design technological process and 10 design advice were summarized, which was easy to guide engineering design and construction. In the end research production were applied in slopes of Zhucheng highway K82-K83, after stability analysis appraisal of this slopes with stereographic projection methods and FLAC3D numerical value simulation methods, wholly grouted bolts supporting system was put forward to unsteady crisscrossing slope.
论文对顺层岩质边坡稳定性的影响因素进行了归纳总结;根据顺层岩质边坡结构特征进行了分类,并对其破坏模式进行了探讨;介绍了常用的一些顺层岩质边坡稳定性分析方法,分析了这些方法的适用性及优缺点;对顺层岩质边坡的工程设计进行了研究,归纳了顺层岩质边坡的工程设计流程及10条工程设计建议,以便于指导工程设计施工;最后将研究成果应用于竹城公路K82-K83段边坡,在对该段边坡采用赤平极射投影方法和FLAC3D数值模拟方法进行稳定性分析评价后,综合考虑多方面因素对不稳定边坡段提出了全长注浆锚杆长短交错布置的支护方案。
Layered slopes included: The level slopes, bedding slopes and inverse slopes, in which bedding slopes are destroyed early. As to bedding slopes, at present the collapsing mechanism, the stability appraises and the project designs were preliminary researched at home and abroad, certain cognition was gotten, but still not put studying achievement into actual project with good effects.
Firstly stability effect factor of bedding rock slopes were summarized; secondly, according to structure pattern bedding rock slopes were classified, and destroying models were discussed; subsequently some stability analysis methods of bedding rock slopes were introduced, applicability and merits and faults of these methods were analyzed; then the engineering design of bedding rock slopes were studied, engineering design technological process and 10 design advice were summarized, which was easy to guide engineering design and construction. In the end research production were applied in slopes of Zhucheng highway K82-K83, after stability analysis appraisal of this slopes with stereographic projection methods and FLAC3D numerical value simulation methods, wholly grouted bolts supporting system was put forward to unsteady crisscrossing slope.
引文
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[7]郭志华,盛谦,梅松华.层状复合岩体宏观力学参数的计算机模拟试验[J].岩石力学与工程学报,2004,23,(增2):4902-4906
[8]陈沅江,潘长良,曹平.层状岩质边坡蠕变破坏及其影响因素分析[J].勘察科学技术,2001,(6):43-48
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[11]房定旺,许传华,毛权生.岩石边坡的滑劈破坏[J].岩土工程学报,2003,25(6):688-691
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[13]闫莫明,徐祯详,苏自约.岩土锚固技术手册[M].北京:人民交通出版社,2004
[14]孙东亚,彭一江,王兴珍.DDA数值方法在岩质边坡倾倒破坏分析中的应用[J].岩石力学与工程学报,2002,21(1):39-42
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[17]Cueto E,Doblare M,Gracia L.Imposing essential boundary conditions in the natural element method by means of density-scaled α-Shapes [J].Int J Num Meth Eng,2000,49:519-546
[18]Braun J,Sambridge M.A numerical method for solving partial differential equations on highly irregular evolving grids[J].Nature,1995,376:655-660
[19]朱大勇,李焯芬.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
[20]徐青,陈士军,陈胜宏.滑坡稳定分析剩余推力法的改进研究[J].岩土力学,2005,26(3):465-470
[21]边树兴,李克民,朱玉生.Sarma法中稳定性检验的分析及改进[J].矿冶,2004,13(2):14-16
[22]张国祥,刘新华,魏伟.二维边坡滑动面及稳定性弹塑性有限元分析[J].铁道学报,2003,25(2):79-83
[23]郑颖人,时卫民.不平衡推力法与Sarma法的讨论[J].岩石力学与工程学报,2004,23(17):3030-3026
[24]张国祥,刘宝琛.潜在滑移面理论及其在边坡分析中的应用[M].长沙:中南大学出版社,2003.7
[25]朱以文,吴春秋,蔡元奇.基于滑移线场理论的边坡滑裂面确定方法[J].岩石力学与工程学报,2005,24(15):2609-1616
[26]张永强,范文,俞茂宏.边坡极限荷载的统一滑移线解[J].岩石力学与工程学报,2000,19(增):994-996
[27]李育超,凌道盛,陈云敏等.蒙特卡洛法与有限元相结合分析边坡稳定性[J].岩石力学与工程学报,2005,24(11):1933-1941
[28]王均星,王汉辉,吴雅峰.土坡稳定的有限元塑性极限分析上限法研究[J].岩石力学与工程学报,2004,23(11):1867-1873
[29]王汉辉,王均星,王开治.边坡稳定的有限元塑性极限分析[J].岩土力学,2003,24(5):733-738
[30]李爱兵.边坡中地下水渗流的边界元分析[J].矿业研究与开发,1994,14(1):29-35
[31]孙秀山,黄立新,刘应华等.二维正交各向异性结构弹塑性问题的边界元分析[J].复合材料学报,2005,22(3):156-161
[32]周焕林,牛忠荣,王秀喜等.正交各向异性位势问题边界元法中几乎奇异积分的解析算法[J].应用力学学报,2005,22(2):193-197
[33]郑书彦,李占斌,李甲平等.滑坡侵蚀离散元分析研究[J].岩石力学与工程学报,2005,24(12):2124-2128
[34]王涛,盛谦,陈晓玲.基于直接法节理网络模拟的三维离散单元法计算[J].岩石力学与工程学报,2005,24(10):1649-1653
[35]鲍鹏,姜忻良,崔奕.可变形体离散元模型[J].天津大学学报,2005,38(6):552-555
[36]Belytschko T,Lu Y Y,Gu L.Element-free Galerkin method[J].Int J Num Meth Eng,1994,37:229-56
[37]T.G.Sitharam,G.Madhavi Latha.Simulation of excavations in jointed rock masses using a practical equivalent continuum approach[J].International Journal of Rock Mechanics and Mining Sciences,2002,39:517-525
[38]简文彬,姚环,焦述强等.漳州—龙岩高速公路石崆山高边坡稳定性评价[J].岩石力学与工程学报,2002,21(1):43-47
[39]张奇华,邬爱清,石根华.关键块体理论在百色水利枢纽地下厂房岩体稳定性分析中的应用[J1.岩石力学与工程学报,2004,23(15):2609-2614
[40]刑建营,刑义川,陈祖煜.岩质边坡楔形体破坏的离心模型试验方法研究[J].水土保持通报,2005,25(3):15-19
[41]李爱兵,周先明.露天采场三维楔形滑坡体的稳定性研究[J].岩石力学与工程学报,2002,21(1):52-55
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