| 青藏高原融冻泥流型滑坡灾害及其稳定性评价方法 |
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| 引用本文： | 靳德武,牛富俊,陈志新,倪万魁.青藏高原融冻泥流型滑坡灾害及其稳定性评价方法[J].煤田地质与勘探,2004,32(3):49-52. |
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| 作者姓名： | 靳德武 牛富俊 陈志新 倪万魁 |
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| 作者单位： | 1. 煤炭科学研究总院西安分院, 陕西 西安 710054; |
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| 基金项目： | 国家自然科学基金项目 (编号 :5 0 0 0 80 16 ) |
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| 摘 要： | 青藏高原多年冻土地区融冻泥流型滑坡属于长度与深度之比为无限大的浅层滑坡,应用无限斜坡分析方法研究滑坡的稳定性是完全合适的。考虑渗流方向与斜坡方向一致的情况,应用有效应力原理,本文推导出不同含水条件下融冻泥流型滑坡安全系数的解析表达式,绘制出了干土坡和完全饱水土坡稳定性分析图表,并对青藏公路K30 35里程融冻泥流型滑坡进行了稳定性分析及评价。
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| 关 键 词： | 融冻泥流 滑坡 稳定性 无限斜坡 青藏高原 |
| 文章编号： | 1001-1986(2004)03-0049-03 |
| 收稿时间： | 2003-10-08 |
| 修稿时间： | 2003年10月8日 |
Landslide hazard from gelifluction in Qinghai-Tibet plateau and stability analysis method |
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| JIN De-wu ,NIU Fu-jun ,CHEN Zhi-xin ,NI Wan-kui.Landslide hazard from gelifluction in Qinghai-Tibet plateau and stability analysis method[J].Coal Geology & Exploration,2004,32(3):49-52. |
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| Authors: | JIN De-wu NIU Fu-jun CHEN Zhi-xin NI Wan-kui |
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| Institution: | 1. Xi'an Branch, Central Coal Research Institute, Xi'an 710054, China;2. State Key Lab of Frozen Soil Engineering, CAREERI, CAS, Lanzhou 73000, China;3. Department of Geology Engineering & Surveying Engineering Changan University, Xi'an 710054, China |
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| Abstract: | Landslide in gelifluction is a new geological hazard caused by human activity in permafrost region of Qinghai-Tibet plateau. It belongs to shallow landslide with small length-width ratio. In general, infinite slope analysis method is applied to it. According to identical seepage direction to slope surface,with the effective stress principle,the analytical expression of safety factor of the landslide in gelifluction with different water content conditions is derivated and stability analysis chart of dry and fully saturated water soil are plotted. Lastly,taking the Landslide in gelifluction in milestone K3035 of Qinghai-Tibet highway as an example,the paper analyzes and evaluats the stability of the landslide. |
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| Keywords: | gelifluction landslide stability analysis and evaluation infinite slope Qinghai-Tibet plateau |
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