云南地区强膨胀土路堑高边坡工程设计方案研究
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摘要
针对昆明枢纽东南环铁路路堑工点双侧强膨胀土路堑高边坡,采用挡土墙、锚固桩、锚杆框架格梁、灌草护坡和支撑渗沟等多种措施进行综合支挡防护设计,为干湿交替明显的气候特征地区的高地下水位、强膨胀土挖方边坡治理的典型代表。该工程竣工两年来,已经历了三个雨季的考验,目前边坡稳定、铁路运营良好。
As for the case, both sides of the road cutting on Kunming southeast railway are highly swelling soil road cutting high slope. Various measures have been adopted for comprehensive support and protection design, such as earth-retaining wall, anchor pile, anchor frame beam, shrub-grass protection slope and supporting seeping grooves. Such design is a typical representative for highly swelling soil excavation slope treatment in the obvious climate features region with high groundwater level. Two years after the completion of the project, it has already undergone three rainy seasons. Currently, the slope is stable and the railway operates well. The design thought, protection measures and issues for further consideration of this case can be referenced by peers in the design of similar projects.
As for the case, both sides of the road cutting on Kunming southeast railway are highly swelling soil road cutting high slope. Various measures have been adopted for comprehensive support and protection design, such as earth-retaining wall, anchor pile, anchor frame beam, shrub-grass protection slope and supporting seeping grooves. Such design is a typical representative for highly swelling soil excavation slope treatment in the obvious climate features region with high groundwater level. Two years after the completion of the project, it has already undergone three rainy seasons. Currently, the slope is stable and the railway operates well. The design thought, protection measures and issues for further consideration of this case can be referenced by peers in the design of similar projects.
引文
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[5] 谢云,陈正汉,孙树国,等.重塑膨胀土的三向膨胀力试验研究[J].岩土力学,2007,28(8):1636-1642.XIE Y,CHEN Z H,SUN S G,et al.Test research on three-dimensional swelling pressure of remolded expansive clay[J].Rock and Soil Mechanics,2007,28(8):1636-1642.
[6] 水利水电科学研究院.黏性土抗剪强度译文集[M].南京水利科学研究所,译.北京:科学出版社,1965.
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[8] 蒋忠信,李敏,秦小林.关于南昆铁路膨胀岩路堑边坡设计原则的探讨[J].中国地质灾害与防治学报,1994,5(4):66-74.JIANG Z X,LI M,QIN X L.An explore on design principle of cut slope in expansive rock at Nanning-Kunming railway[J].The Chinese Journal of Geological Hazard and Control,1994,5(4):66-74.
[2] 殷宗泽,袁俊平,韦杰,等.论裂隙对膨胀土边坡稳定的影响[J].岩土工程学报,2012,34(12):2155-2161.YIN Z Z,YUAN J P,WEI J,et al.Influences of fissures on slope stability of expansive soil[J].Chinese Journal of Geotechnical Engineering,2012,34(12):2155-2161.
[3] 铁道部第一勘测设计院.铁路工程设计技术手册·路基[K].北京:中国铁道出版社,1992.
[4] 张颖钧.裂土侧向膨胀力国内外研究现状及述评[J].大坝观测与土工测试,1993,17(3):28-32.ZHANG Y J.Study present situation and review at home and abroad of lateral swelling pressures of expansive soils[J].Dam Observation and Geotechnical Test,1993,17(3):28-32.
[5] 谢云,陈正汉,孙树国,等.重塑膨胀土的三向膨胀力试验研究[J].岩土力学,2007,28(8):1636-1642.XIE Y,CHEN Z H,SUN S G,et al.Test research on three-dimensional swelling pressure of remolded expansive clay[J].Rock and Soil Mechanics,2007,28(8):1636-1642.
[6] 水利水电科学研究院.黏性土抗剪强度译文集[M].南京水利科学研究所,译.北京:科学出版社,1965.
[7] 何满潮,毛利勤,张金风,等.膨胀岩路堑边坡稳定性探讨[J].矿山压力与顶板管理,2004(1):96-98.HE M C,MAO L Q,ZHANG J F,et al.A brief discussion on properties of cut slope of expansive soft rock in Jinlin-Hunchun speedway[J].Grount Pressure and Strata Control,2004(1):96-98.
[8] 蒋忠信,李敏,秦小林.关于南昆铁路膨胀岩路堑边坡设计原则的探讨[J].中国地质灾害与防治学报,1994,5(4):66-74.JIANG Z X,LI M,QIN X L.An explore on design principle of cut slope in expansive rock at Nanning-Kunming railway[J].The Chinese Journal of Geological Hazard and Control,1994,5(4):66-74.