本文選題：邊坡穩(wěn)定性 + 安全系數(shù)��； 參考：《山地學(xué)報》2016年05期

【摘要】：以蘭州九洲開發(fā)區(qū)某邊坡為例,采用Slide軟件中的Sensitivity Analysis模塊,對邊坡進(jìn)行敏感性分析,得出素填土a的重度和粘聚力是影響穩(wěn)定性的主要因素,而其他巖土體的物理力學(xué)性質(zhì)對計(jì)算結(jié)果影響不大;利用Probabilistic Analysis模塊,進(jìn)行了基于Monte-Carlo方法的安全系數(shù)與可靠度計(jì)算,評價了該邊坡的穩(wěn)定性,并與確定性計(jì)算結(jié)果進(jìn)行了對比。結(jié)果表明:盡管安全系數(shù)基本一致,但從破壞概率來說,該邊坡在自重狀態(tài)下,坡體處于穩(wěn)定狀態(tài),破壞概率最大為0.4%;在暴雨工況下,坡體均處于不穩(wěn)定狀態(tài),破壞概率最小為70.3%;而在地震作用下,東段和南段的部分仍可穩(wěn)定,破壞概率極小,僅為2.7%,評價結(jié)論更加可靠和直觀,有利于邊坡治理方案的優(yōu)化設(shè)計(jì)。
[Abstract]:Taking a slope of Jiuzhou Development Zone in Lanzhou as an example, the sensitivity of slope is analyzed by using Sensitivity Analysis module in Slide software. It is concluded that the degree and cohesion of the plain fill a are the main factors that affect the stability of the slope. However, the physical and mechanical properties of other rock and soil have little effect on the calculation results. The safety factor and reliability calculation based on Monte-Carlo method are carried out by using Probabilistic Analysis module, and the stability of the slope is evaluated and compared with the deterministic calculation results. The results show that, although the safety factor is basically the same, the slope is in a stable state with the maximum failure probability of 0.4 under the condition of deadweight, and the slope is in an unstable state under the condition of heavy rain. The minimum damage probability is 70.3, but under the earthquake, the parts of the eastern and southern sections are still stable, and the damage probability is only 2.7.The evaluation conclusion is more reliable and intuitive, which is beneficial to the optimal design of the slope treatment scheme.
【作者單位】： 甘肅省科學(xué)院地質(zhì)自然災(zāi)害防治研究所;中國科學(xué)院水利部成都山地災(zāi)害與環(huán)境研究所;
【基金】：甘肅省科學(xué)院應(yīng)用研究與開發(fā)項(xiàng)目(2012JK-06);甘肅省科學(xué)院科技產(chǎn)業(yè)化項(xiàng)目(2014CY02) “西部之光”訪問學(xué)者(2015年)~~
【分類號】：P642.22

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