摘要
斜坡是山区、冻土地区,以及黄土地区广泛发育的一类地质形态。斜坡具有滑动深度小、滑动面易于确定、易受降雨和滑动面上水分影响的浅层滑坡特点。一般地,将地下水流线概化成与斜坡互相平行的直线和流线相互平行的水平线。从两类特殊渗流条件下的孔隙水压力入手,应用有效应力原理得出了无限斜坡稳定性安全系数的统一解,并通过工程实例对所得出的统一解进行了验证。文中提出的考虑渗流影响的无限斜坡稳定性分析方法对类似滑坡分析有一定的参考价值,尤其对于复杂渗流条件下的、流场研究程度较高的重要道路工程地段及桥涵附近边坡稳定性分析、坝基抗滑稳定性分析与验算等问题的研究具有实践指导意义。
The slope exists widely at mountains, permafrost and loess area. The landslide of the slope is characterized by shallow sliding, easily defining slide face and effect from rainfall and groundwater. In general stability anly-sis, the groundwater streamline was treated as parallel line with slope surface and horizontal line. Based on pore water pressure of two kinds of special seepage conditions for infinite slope, a unified safety factor formula has been derived acoording to the effective stress principle, then integrated stability analysis method of infinite slope was obtained and verified by engineering examples. The stability analysis method presented may be taken as the reference for landslide of infinite slope with similar conditions, especially to the slope of important highway , nearby bridge opening, with complicated seepage conditions and clear seepage flow net. It is also practical guideline for stability analysis and checking calculation against sliding for dam foundation.
出处
《地下空间与工程学报》
CSCD
2007年第z2期1537-1540,共4页
Chinese Journal of Underground Space and Engineering
