Stress of soft rock in deep mining is close to strength limit state, rock is sensitive to outer disturbed loading, research project was put forward in order to study rock rheology disturbed effects.
深井软岩的应力状态接近于岩石强度极限状态，对外部扰动载荷十分敏感，为了研究这种高应力状态下岩石表现出的力学特性，提出了岩石流变扰动效应这一研究课题。
This method is based on reliability idea, and the dam final stability coefficient dam of is defined by the strength reserve coefficient or over loading coefficient at limit equilibrium state.
该方法基于可靠度思想，以达到用极限承载状态时的强度储备系数或超载系数来表征大坝安全度。
The minimum safety coefficient was defined as the reduction coefficient, when the system was fairly close to the limit equilibrium state through decrement of material strength step by step.
此时，系统达到临界平衡状态时所对应的材料强度降低倍数即为整体最小安全系数，临界平衡状态定义为边坡内的塑性屈服区能够形成潜在的滑移通道时的状态。
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