| 巫峡神女溪滑坡土体特性试验研究 |
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| 引用本文： | 赵先涛,向杰,唐红梅,梁学战,胡君.巫峡神女溪滑坡土体特性试验研究[J].土木建筑与环境工程,2012,34(Z2):33-38. |
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| 作者姓名： | 赵先涛 向杰 唐红梅 梁学战 胡君 |
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| 作者单位： | 重庆交通大学 岩土工程研究所,重庆 400074;重庆交通大学 岩土工程研究所,重庆 400074;重庆交通大学 岩土工程研究所,重庆 400074;重庆交通大学 岩土工程研究所,重庆 400074;重庆交通大学 岩土工程研究所,重庆 400074 |
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| 基金项目： | 国家自然科学基金项目（41071017）;重庆市国土资源和房屋管理局科技计划项目(201107) |
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| 摘 要： | 滑坡土体各指标参数的准确获取是进行滑坡稳定性评价和工程治理的关键环节。文章以重庆巫山县神女溪滑坡为例，对其不同高程的土样进行了X射线衍射矿物成分分析和不固结不排水直剪试验，实施了库岸滑坡土体各指标对水位变化的敏感性试验。研究表明，滑坡土体所含矿物主要为方解石、石英和粘土矿物，粘土矿物中亲水性矿物对滑坡稳定性具有极大影响；含水量主要通过影响土体的粘结力，来降低抗剪强度；粘结力与含水量近似成二次曲线关系急剧降低，当含水量达到约18.21%时，其变化趋于稳定，而内摩擦角与含水量近似成线性关系小幅度递减。研究成果对类似滑坡土体强度参数的合理取值具有一定的参考价值。
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| 关 键 词： | 神女溪滑坡 X射线衍射 直剪试验 抗剪强度参数 含水量 |
Experiment Study on Soil Properties of Shennv Stream Landslide in Wu Gorge |
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| ZHAO Xiantao,XIANG Jie,TANG Hongmei,LIANG Xuezhan and HU Jun.Experiment Study on Soil Properties of Shennv Stream Landslide in Wu Gorge[J].土木建筑与环境工程,2012,34(Z2):33-38. |
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| Authors: | ZHAO Xiantao XIANG Jie TANG Hongmei LIANG Xuezhan and HU Jun |
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| Affiliation: | Institute of Geotechnical Engineering, Chongqing Jiaotong University, Chongqing 400074, P. R .China;Institute of Geotechnical Engineering, Chongqing Jiaotong University, Chongqing 400074, P. R .China;Institute of Geotechnical Engineering, Chongqing Jiaotong University, Chongqing 400074, P. R .China;Institute of Geotechnical Engineering, Chongqing Jiaotong University, Chongqing 400074, P. R .China;Institute of Geotechnical Engineering, Chongqing Jiaotong University, Chongqing 400074, P. R .China |
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| Abstract: | Accurate obtainting soil parameters of landslide is the key links for landslide stability evaluation and project management . This article takes Shennv Stream landslide in Chongqing Wushan County as an example, implementing unconsolidated and undrained shear test and mineral composition analysis by X ray diffraction for soil in different elevations of landslide ,conducting sensitivity test for various soil parameters of reservoir landslide change with different water level.Study shows that : Mineral composition of soil mainly contains Calcite, Quartz and clay mineral. Hydrophilic minerals in clay mineral have great effect on stability of landslide. Shear strength decreases by influence of water content on cohesion. Cohesion decreases sharply in a quadratic function relation with water content increasing .When water content comes to 18.21% ,change of cohesion tends to be stable.But the internal friction angle of landslide soil decreases linearly in small amplitude with an increase of water content. Research results may provide some important references for rationally choosing strength parameters of soil in similar landslide. |
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| Keywords: | Shennv Stream landslide X ray diffraction direct shear test parameters of shear strength water content |
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