广惠高速公路路堑高边坡变形原因分析及治理措施
|
摘要
由于降雨造成原设计工程发生变形破坏、地表水下渗浸泡产生膨胀变形以及自身黏土质岩类受各种作用产生的位移变形,导致广惠高速公路路堑高边坡发生变形破坏现象。边坡在平行和垂直于道路的方向有分离、倾斜的现象,坡体上有较明显的裂缝,并且部分锚索的钢绞线被拉断从锚头端飞出,需要对原边坡进行治理。通过边坡稳定性分析,计算得出边坡在天然工况和暴雨工况下的安全系数分别为1.135和0.989,表明边坡安全储备不足,已发生失稳破坏。对其采用预应力锚索、随机锚杆、微型注浆钢管以及地梁等对原边坡进行再加固处理,同时修复整个边坡的排水系统。通过治理效果良好,满足运营要求。
Due to the deformation and destruction of the original design project caused by rainfall, the expansion deformation caused by surface water infiltration and soaking, and the displacement deformation of the self-clay rock by various actions, the deformation and failure of the high cutting slope of Guanghui expressway occurred. The slope is separated and tilted in the direction of parallel and perpendicular to the road. There are obvious cracks on the slope, and some strand cables are broken off from the anchor ends, so the original slope needs to be treated. Through the stability analysis of the slope, the safety factor of the slope under natural conditions and rainstorm conditions are 1.135 and 0.989 respectively by calculating. It indicates that slope safety reserve is insufficient, and instability failure may occur. The pre-stressed anchor cable, random anchor rod, micro grouting steel pipe and ground beam are used to reinforce the original slope, and the drainage system of the whole slope is repaired at the same time. Good effect is achieved through the treatment measures and it meet the operation requirement.
Due to the deformation and destruction of the original design project caused by rainfall, the expansion deformation caused by surface water infiltration and soaking, and the displacement deformation of the self-clay rock by various actions, the deformation and failure of the high cutting slope of Guanghui expressway occurred. The slope is separated and tilted in the direction of parallel and perpendicular to the road. There are obvious cracks on the slope, and some strand cables are broken off from the anchor ends, so the original slope needs to be treated. Through the stability analysis of the slope, the safety factor of the slope under natural conditions and rainstorm conditions are 1.135 and 0.989 respectively by calculating. It indicates that slope safety reserve is insufficient, and instability failure may occur. The pre-stressed anchor cable, random anchor rod, micro grouting steel pipe and ground beam are used to reinforce the original slope, and the drainage system of the whole slope is repaired at the same time. Good effect is achieved through the treatment measures and it meet the operation requirement.
引文
[1]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):234-237,242.
[2]李靖.浅析高速公路高边坡病害原因及治理对策[J].工程建设与设计,2018(17):58-60.LI J.Causes and governance countermeasures of high slope disease in expressway[J].Construction & Design for Project,2018(17):58-60.
[3]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):367-369.ZHU Z M,GUAN Y B.Analysis and treatment of landslide mechanism of high slope in Gaoqin Expressway in Shanxi[J].Highway,2017(8):367-369.
[4]付贤炜.某运营高速公路边坡病害评价分析及治理[J].土工基础,2015,29(2):21-24.FU X W.Evaluation,Analysis and Treatment of the Slope Diseases of an Expressway[J].Soil Engineering and Foundation,2015,29(2):21-24.
[5]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.
[6]冯文凯,石豫川,柴贺军,等.缓倾角层状高边坡变形破坏机制物理模拟研究[J].中国公路学报,2004,17(2):32-36.FENG W K,SHI Y C,CHAI H J,et al.Study of mechanism of deformation failure of a low-angle bedded high slope with physical simulation method[J].China Journal of Highway and Transport,2004,17(2):32-36.
[7]李龙起,罗书学,魏文凯,等.降雨入渗对含软弱夹层顺层岩质边坡性状影响的模型试验研究[J].岩石力学与工程学报,2013,32(9):1772-1778.LI L Q,LUO S X,WEI W K,et al.Model tests of rainfall infiltration effect on bedding rock slope with weak interlayer[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(9):1772-1778.
[8]刘发祥,何鹏,唐升贵.基于赤平极射投影法的岩质边坡破坏模式预测[J].科学技术与工程,2014,14(20):172-176,185.LIU F X,HE P,TANG S G.Prediction based on the stereographic projection principle for rock slope failure modes[J].Science Technology and Engineering,2014,14(20):172-176,185.
[9]韦生根,罗筠.贵州晴兴高速公路K30路基边坡滑坡分析与治理[J].公路,2016(5):47-49.WEI S G,LUO J.Landslide analysis and treatment of K30 roadbed slope in Qingxing Expressway in Guizhou[J].Highway,2016(5):47-49.
[10]彭学军,问建学,韩孝峰.高速公路高边坡病害防治思路及实例分析[J].公路,2017(6):39-43.PENG X J,WEN J X,HAN X F.Prevention and treatment of high slope diseases on expressway and case study[J].Highway,2017(6):39-43.
[2]李靖.浅析高速公路高边坡病害原因及治理对策[J].工程建设与设计,2018(17):58-60.LI J.Causes and governance countermeasures of high slope disease in expressway[J].Construction & Design for Project,2018(17):58-60.
[3]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):367-369.ZHU Z M,GUAN Y B.Analysis and treatment of landslide mechanism of high slope in Gaoqin Expressway in Shanxi[J].Highway,2017(8):367-369.
[4]付贤炜.某运营高速公路边坡病害评价分析及治理[J].土工基础,2015,29(2):21-24.FU X W.Evaluation,Analysis and Treatment of the Slope Diseases of an Expressway[J].Soil Engineering and Foundation,2015,29(2):21-24.
[5]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.
[6]冯文凯,石豫川,柴贺军,等.缓倾角层状高边坡变形破坏机制物理模拟研究[J].中国公路学报,2004,17(2):32-36.FENG W K,SHI Y C,CHAI H J,et al.Study of mechanism of deformation failure of a low-angle bedded high slope with physical simulation method[J].China Journal of Highway and Transport,2004,17(2):32-36.
[7]李龙起,罗书学,魏文凯,等.降雨入渗对含软弱夹层顺层岩质边坡性状影响的模型试验研究[J].岩石力学与工程学报,2013,32(9):1772-1778.LI L Q,LUO S X,WEI W K,et al.Model tests of rainfall infiltration effect on bedding rock slope with weak interlayer[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(9):1772-1778.
[8]刘发祥,何鹏,唐升贵.基于赤平极射投影法的岩质边坡破坏模式预测[J].科学技术与工程,2014,14(20):172-176,185.LIU F X,HE P,TANG S G.Prediction based on the stereographic projection principle for rock slope failure modes[J].Science Technology and Engineering,2014,14(20):172-176,185.
[9]韦生根,罗筠.贵州晴兴高速公路K30路基边坡滑坡分析与治理[J].公路,2016(5):47-49.WEI S G,LUO J.Landslide analysis and treatment of K30 roadbed slope in Qingxing Expressway in Guizhou[J].Highway,2016(5):47-49.
[10]彭学军,问建学,韩孝峰.高速公路高边坡病害防治思路及实例分析[J].公路,2017(6):39-43.PENG X J,WEN J X,HAN X F.Prevention and treatment of high slope diseases on expressway and case study[J].Highway,2017(6):39-43.