the ratio of the breaking stress of a structure to the estimated maximum stress in ordinary use

the factor of safety is the function of slip surface, only the minimal factor of safety can describe the slope stability.

边坡安全系数是可能滑面的函数，而只有最小安全系数才可代表边坡的安全程度。

the factor of safety of the geomembrane against the mobilized tensile stresses of laogang msw landfill of shanghai is 2.9, is safe for the liners system.

上海老港垃圾填埋场四期衬垫系统工程的土工膜抵抗拉伸应力的安全系数为2.9，为安全。

this paper set up limit equation of reliability analysis for factor of safety method in the stability analysis method of slope.

本文针对土坡稳定分析方法中的安全系数法建立了可靠度分析的极限方程。

on the other side, the proposed method can also consider the influence of the change of stress fields and pore pressure field on the minimum factor of safety by the finite element analysis.

同时，本方法利用有限元法分析的应力和孔隙水压力结果，按有效应力法计算边坡安全系数，可分析施工过程中应力和孔隙水压力变化对边坡最小安全系数的影响。

it is indicated that the factor of safety of slope after stabilization is 1.33 when it is excavated to the designing roadbed; and it can meet the safe demand of the engineering.

计算结果表明，支护后开挖到设计路基的安全系数是1.33，可满足工程安全的需要。

the engineer is well advised to exercise caution in the choice of the parameters used in the factor of safety calculation.

我们诚恳地劝告工程师注意安全系数计算中所用参数的选择。

the choice of a suitable value for the factor of safety also presents great difficulties.

选择适当的安全系数值也存在大的困难。

in slope project, the traditional evaluating method is factor of safety method.

在边坡工程中，传统的评价方法是安全系数法。

in addition, considering that dda could accurately solve the tangential sliding force, the reasonable factor of safety could be obtained by combining strength reduction method.

此外，考虑到dda可以準确解决的切线的滑动力，合理的安全系数可以通过以下方式获得结合强度降低的方法。

so factor of safety based on that soil, load and calculated model are certainty can not quantitatively, objectively reflect the true safe degree of slope.

因而将土、荷载与计算模式都视为确定性的现象所求得的安全系数，就不能定量地、客观地反映土坡的真实安全程度。

a high factor of safety should be used because this method is only a rough approximation and stress concentration is present.

译成：因为此方法只是一种近似的方法，而且存在应力集中，所以应选取较大安全系数。

with limit equilibrium method, the factor of safety can be readily derived, but its precision is limited due to over-assumptions.

极限平衡法计算安全系数概念明确、过程简单，但假设过多，精度又受到限制。

slope stability is the key factor of safety in production in surface mine.

边坡稳定性是确保露天矿安全生产的重要因素。

the minimum factor of safety of an unsaturated soil slope is analyzed with the changes of different parameters.

通过具体算例，对安全系数比和重度对最小安全系数的影响进行分析。

we get the form and position of failure surface, and then calculate factor of safety with general limit equilibrium method.

确定了滑动面的位置和形式，然后用刚体极限平衡法计算安全系数。

finally, a relations of slope stability factor of safety with the slope of the parameters was discussed by using the genetic algorithm optimization model which is mentioned above.

最后运用此优化模型分别计算并分析了边坡各参数的变化对边坡稳定安全系数和危险滑裂面圆心的平面位置的影响。

the method not only can consider behavior of stress strain of soil, but also can determine the most dangerous slip surface and its factor of safety at any time.

该方法不仅能够考虑土的应力应变性质，而且能够在任意时刻确定最危险滑动面的位置及安全系数。

the global minimum factor of safety can be found by comparing the results of a number of trial slip surfaces.

通过比较一定数量的试算滑动面，确定边坡临界滑动面及其对应的最小安全系数。

we used the digital computers to locate the topographic profile of slides automatically and calculate the factor of safety by intergration.

它应用电子计算机自动确定滑面位置和用积分方法计算稳定系数。

a new factor of safety for hydraulic fracturing is defined; and it can be conveniently used to assess the safety of dam core hydraulic fracturing.

定义一种判定水力劈裂的安全系数，可方便利用此系数进行水力劈裂判定及不同方法比较。

the factor of safety is calculated with the aid of stress fields and the pore pressure field obtained from the finite element analysis.

根据有限元分析的应力和孔隙水压力结果计算给定滑动面的安全系数。

the process in calculation of the contact forces between blocks is firstly introduces, and a method about the factor of safety calculation in discontinuous deformation analysis(dda) is then presented.

首先，介绍dda方法中关于块体接触力的计算过程，提出计算沿潜在滑动面稳定性安全系数的计算方法；

the paper points out the factor of safety by means of finite element method, the strength reduction method and limit equilibrium method decreases in turn.

表明有限元法、强度折减法、极限平衡法得出的安全系数依次降低；