| 银西铁路驿马黄土滑坡工程特性与变形研究 |
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| 作者单位： | ;1.中铁第一勘察设计院集团有限公司 |
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| 摘 要： | 银西铁路途经黄土梁峁沟壑区,不良地质非常发育。通过现场地质调查、钻探、原位测试及室内土工试验等综合勘察手段,查明驿马滑坡的工程地质条件。驿马滑坡为一大型中深层-深层黄土质古滑坡,滑坡前缘临空,后缘发育陡坎,后缘后部黄土塬面发育陷穴,侧缘分布冲沟,且受灌溉、排水等人为扰动影响。采用地层宏观评判,土体物理参数细部数据分析,有限元数值模拟的方法,研究滑坡工程特性及变形规律,评价滑坡潜在危害,为铁路选线提供参考。
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| 关 键 词： | 黄土滑坡 铁路选线 地层结构 工程特性 数值模拟 |
Study on Engineering Characteristics and Deformation of Yima Loess Landslide of Yinchuan-Xi'an Railway |
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| Institution: | ,China Railway First Survey & Design Institute Group Co.,Ltd. |
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| Abstract: | Yinchuan- Xi'an Railway passes through loess flat-topped ridge replat and gully area,and adverse geological phenomena are common. The engineering geological condition of the landslide is identified though field survey,drilling and laboratory soil test. Yima landslide is a large deep loess ancient landslide,the front part of the landslide is suspended and developed scarps are on the rear part with loess settlement caves on tableland behind landslide and gullies on side edge. The landslide is affected by human activities such as irrigation and drainage. The engineering characteristics and deformation law of landslide are studied by means of formation macroscopic evaluation, physical parameters analysis of soil mass and finite element numerical simulation,and the potential landslide hazards are evaluated to provide references for railway line selection. |
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| Keywords: | Loess landslide Railway line selection Stratum structure Engineering characteristics Numerical simulation |
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