骡坪隧道洞口山体滑坡稳定性分析及治理措施研究
|
摘要
骡坪隧道洞口山体边坡因暴雨影响出现裂缝,沿隧道顶上方横向贯通发生滑坡,通过地质勘探研究工程地质条件,分析滑坡变形特征及变形原因,使用勘查数据进行滑坡稳定性分析,并确定了治理措施。结果表明:斜坡治理前,天然工况和降雨工况下滑坡的安全系数分别为1.167,1.025;采用削坡、坡体注浆、锚索框架等治理措施后,山体滑坡在天然工况和降雨工况下的安全系数分别为1.360,1.210,降低了边坡地下水位,减小了渗水压力,改善了边坡稳定条件,提高了边坡稳定性,达到设计安全要求。
For the influence of rainstorm on the slope of the entrance of the Luoping tunnel, cracks started appearing and the landslide was transversely occured through the top of the tunnel. The engineering geological condition was found out by geological exploration. The landslide deformation characteristics, deformation reasons and landslide stability are analyzed by using exploration data and the control measures are determined. The results show that before the slope treatment, the safety factor of landslide under natural and rainfall conditions is 1.167 and 1.025 respectively, and the safety factor of landslide is 1.360 and 1.210 respectively under natural and rainfall conditions after cutting slope, slope grouting, anchor frame and other measures. The measures have reduced the underground water level of the slope, reduced the seepage pressure, improved the stability condition of the slope, improved the stability of the slope, and achieved the safety requirements of the design, providing reference and reference for similar projects.
For the influence of rainstorm on the slope of the entrance of the Luoping tunnel, cracks started appearing and the landslide was transversely occured through the top of the tunnel. The engineering geological condition was found out by geological exploration. The landslide deformation characteristics, deformation reasons and landslide stability are analyzed by using exploration data and the control measures are determined. The results show that before the slope treatment, the safety factor of landslide under natural and rainfall conditions is 1.167 and 1.025 respectively, and the safety factor of landslide is 1.360 and 1.210 respectively under natural and rainfall conditions after cutting slope, slope grouting, anchor frame and other measures. The measures have reduced the underground water level of the slope, reduced the seepage pressure, improved the stability condition of the slope, improved the stability of the slope, and achieved the safety requirements of the design, providing reference and reference for similar projects.
引文
[1]谭福林,胡新丽,张玉明,等.不同类型滑坡渐进破坏过程与稳定性研究[J].岩土力学,2016,37(增刊2):597-606.TAN F L,HU X L,ZHANG Y M,et al.Progressive failure process and stability of different types of landslides[J].Rock and Soil Mechanics,2016,37(S2):597-606.
[2]李晓旭.高速公路隧道洞口滑坡稳定性分析及治理研究[J].公路,2017,62(12):292-295.LI X X.Research on stability analysis and treatment of portal landslide for expressway tunnel[J].Highway,2017,62(12):292-295.
[3]李新平,王涛,谢全敏,等.高速公路滑坡稳定性分析及治理优化研究[J].岩土力学,2007,28(5):981-990.LI X P,WANG T,XIE Q M,et al.Study on stability analysis and optimum harness design for expressway landslide[J].Rock and Soil Mechanics,2007,28(5):981-990.
[4]李伟.露天煤矿排土场边坡稳定性分析与治理技术[J].煤炭科学技术,2014,42(10):37-40,5.LI W.Treatment technology and stability analysis of dump slope in open mine[J].Coal Science and Technology,2014,42(10):37-40,5.
[5]路亚妮,吴兴宏,李新平.山区高速公路滑坡稳定性分析及防治对策研究[J].施工技术,2014,43(5):92-96.LU Y N,WU X H,LI X P.Stability analysis and countermeasures on landslide of mountain expressway[J].Construction Technology,2014,43(5):92-96.
[6]朱忠明,关彦斌.山西高沁高速公路填方高边坡滑坡机理分析及治理[J].公路,2017(8):366-369.ZHU Z M,GUAN Y B.Analysis and treatment of landslide mechanism of high slope in Gaoqin Expressway in Shanxi[J].Highway,2017(8):366-369.
[7]蔡建兵,廖小平,刘代文.泉州双安高速公路高路堤边坡稳定性分析及治理设计[J].路基工程,2018(3):234-237,242.CAI J B,LIAO X P,LIU D W.Stability analysis and remedy of high embankment slope of Quanzhou-Shuang’an expressway[J].Subgrade Engineering,2018(3):234-237,342.
[8]陈黎阳.高速公路高边坡滑塌治理方案浅析[J].公路,2016(12):74-76.CHEN L Y.Analysis of treatment plan for highway high slope collapse[J].Highway,2016(12):74-76.
[9]陶连金,沈小辉,王开源,等.某大型高速公路滑坡稳定性分析及锚桩加固的模拟研究[J].工程地质学报,2012,20(2):259-265.TAO L J,SHEN X H,WANG K Y,et al.Stability analysis and supporting effect modeling of a large scale landslide on highway[J].Journal of Engineering Geology,2012,20(2):259-265.
[10]王恭先.滑坡防治方案的选择与优化[J].岩石力学与工程学报,2006,25(增刊2):3867-3873.WANG G X.Choice and optimization of landslide control plan[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(S2):3867-3873.
[2]李晓旭.高速公路隧道洞口滑坡稳定性分析及治理研究[J].公路,2017,62(12):292-295.LI X X.Research on stability analysis and treatment of portal landslide for expressway tunnel[J].Highway,2017,62(12):292-295.
[3]李新平,王涛,谢全敏,等.高速公路滑坡稳定性分析及治理优化研究[J].岩土力学,2007,28(5):981-990.LI X P,WANG T,XIE Q M,et al.Study on stability analysis and optimum harness design for expressway landslide[J].Rock and Soil Mechanics,2007,28(5):981-990.
[4]李伟.露天煤矿排土场边坡稳定性分析与治理技术[J].煤炭科学技术,2014,42(10):37-40,5.LI W.Treatment technology and stability analysis of dump slope in open mine[J].Coal Science and Technology,2014,42(10):37-40,5.
[5]路亚妮,吴兴宏,李新平.山区高速公路滑坡稳定性分析及防治对策研究[J].施工技术,2014,43(5):92-96.LU Y N,WU X H,LI X P.Stability analysis and countermeasures on landslide of mountain expressway[J].Construction Technology,2014,43(5):92-96.
[6]朱忠明,关彦斌.山西高沁高速公路填方高边坡滑坡机理分析及治理[J].公路,2017(8):366-369.ZHU Z M,GUAN Y B.Analysis and treatment of landslide mechanism of high slope in Gaoqin Expressway in Shanxi[J].Highway,2017(8):366-369.
[7]蔡建兵,廖小平,刘代文.泉州双安高速公路高路堤边坡稳定性分析及治理设计[J].路基工程,2018(3):234-237,242.CAI J B,LIAO X P,LIU D W.Stability analysis and remedy of high embankment slope of Quanzhou-Shuang’an expressway[J].Subgrade Engineering,2018(3):234-237,342.
[8]陈黎阳.高速公路高边坡滑塌治理方案浅析[J].公路,2016(12):74-76.CHEN L Y.Analysis of treatment plan for highway high slope collapse[J].Highway,2016(12):74-76.
[9]陶连金,沈小辉,王开源,等.某大型高速公路滑坡稳定性分析及锚桩加固的模拟研究[J].工程地质学报,2012,20(2):259-265.TAO L J,SHEN X H,WANG K Y,et al.Stability analysis and supporting effect modeling of a large scale landslide on highway[J].Journal of Engineering Geology,2012,20(2):259-265.
[10]王恭先.滑坡防治方案的选择与优化[J].岩石力学与工程学报,2006,25(增刊2):3867-3873.WANG G X.Choice and optimization of landslide control plan[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(S2):3867-3873.