| 高速黄土滑坡液化-汽化效应定量研究 |
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| 引用本文： | 倪卫达,雍睿,葛云峰,邹宗兴.高速黄土滑坡液化-汽化效应定量研究[J].安全与环境工程,2010,17(5). |
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| 作者姓名： | 倪卫达 雍睿 葛云峰 邹宗兴 |
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| 作者单位： | 中国地质大学工程学院,武汉,430074 |
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| 摘 要： | 以典型高速黄土滑坡——洒勒山滑坡的分析为基础,提出液化-汽化效应作为黄土滑坡高速启动机制的一种解释,并运用数学物理方程定量分析液化-汽化效应,推导出滑动面在滑动过程中的热效应、温度分布函数及孔隙水汽化压强计算公式,对洒勒山滑坡的液化-汽化效应进行计算,结果表明:滑体在滑动过程中,法向总应力主要由超孔隙水压强和孔隙水汽化压强承担,形成极低摩阻力,滑体变形能大量转化为动能,因而形成高速滑坡。
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| 关 键 词： | 高速黄土滑坡 液化-汽化效应 滑动面 极低摩阻力 洒勒山滑坡 |
Quantitative Research on the Liquefaction-vaporization Effect of High-speed Loess Landslides |
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| NI Wei-da,YONG Rui,GE Yun-feng,ZOU Zong-xing.Quantitative Research on the Liquefaction-vaporization Effect of High-speed Loess Landslides[J].Safety and Environmental Engineering,2010,17(5). |
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| Authors: | NI Wei-da YONG Rui GE Yun-feng ZOU Zong-xing |
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| Institution: | NI Wei-da,YONG Rui,GE Yun-feng,ZOU Zong-xing (Faculty of Engineering,China University of Geosciences,Wuhan 430074,China) |
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| Abstract: | This paper proposes the liquefaction-vaporization effect as the interpretation of the trigger mechanism of high-speed loess landslides based on the analysis of Saleshan landslide,a typical high-speed loess landslide.It uses mathematical and physical equations to analyze the liquefaction-vaporization effect quantitatively and derives the formula of thermal effect,the distribution function of temperature and the formula of pore water vapor pressure in the sliding process.It also calculates the liquefaction-va... |
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| Keywords: | high-speed loess landslide liquefaction-vaporization effect sliding surface low friction Saleshan landsilde |
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