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为研究地下水对平面滑动边坡的影响,归纳了平面滑动边坡常见的3种水压分布形式,并阐述了其分布假设的合理性。根据极限平衡理论,采用Matlab编制程序,通过有无张裂缝两个算例,定性与定量分析相结合,就不同滑动面水深、滑动面倾角、坡高、坡顶倾角、裂缝水平夹角等影响因子进行敏感性分析,重点探讨了在不同水压分布时影响因子对边坡安全系数影响的动态演绎规律。研究表明,平面滑动边坡临界倾角可通过极限平衡理论编制程序计算,并考虑地下水得出临界倾角变化趋势,取经验值10%为浮动范围;边坡影响因子对安全系数的影响随着地下水位的升高而变大,其中坡高对安全系数影响显著,坡顶倾角、张裂缝水平夹角和坡顶距张裂缝距离等对安全系数影响不明显。
In order to study the influence of groundwater on plane sliding slope, three common forms of pressure distribution on plane sliding slope are summarized, and the rationality of its distribution hypothesis is expounded. According to the theory of limit equilibrium, the program is compiled by Matlab. By combining two qualitative and quantitative analysis with qualitative and quantitative analysis, the effects of different depths of sliding surface, inclination of sliding surface, slope height, inclination angle and crack angle Factor sensitivity analysis, focusing on the impact of different water pressure distribution factors on the slope safety factor dynamic deduction. The study shows that the critical inclination angle of plane slip slope can be calculated by the theory of limit equilibrium theory and the trend of critical inclination angle is obtained by considering groundwater. The empirical value of 10% is the floating range. The influence of slope influence factor on safety factor varies with the groundwater level The slope height has a significant impact on the safety factor. The slope angle, the angle between the cracks and the distance between the top and the top of the crack have no significant effect on the safety factor.