Fuzzy Measure Research Of The Blasting Vibration Effect On Open-pit Slope

In this paper, Using Fuzzy Measures Theory, the blasting vibration effect on the slope stability of Tonglushan north open-pit mine is studied and to the practical slope situation the universal significant analysis model of Fuzzy Measures Theory is established. It offeres the new method and way in order to analyse and study the question on open-pit slope project.The slope stability question is influenced by many kinds of inherent factors, for instance geological structure, intensity of rock body, development state of joint and crack, cohesive force (C) of the rock, interior angle of friction (f), groundwater, etc., these objective factors reflect generally their sizes with some quantitative parameter indexes in the past. But in fact their quantity values of the parameter indexes are often difficultly confirmed and they have fuzzy characteristics by theirself. In this paper, using fuzzy measures theory and method, the fuzzy parameters that influence the slope stability are systematically researched and the characteristic function expression formula on the main factors that influence the slope stability is set up.Blasting earthquake effect on slope stability of open-pit is an extremely obvious and complicated problem. It is influenced by various kinds of factors related to blasting, such as the position of the blast source, a detonating blasting quantity, detonating way, etc. Blasting shaking as an important external factor on slope destroy is a important subject that engineers and technicians study, but for a long time, no matter of inherent factor of slope unstability and blows up the external factor of blasting shaking, people continue to research using the method of definite value and judge the slope stability under the safety coefficient of definite value. In fact, it is often difficult to fix these influence factors using accurate definite value because they are fuzzy. This paper sets up the membership functionof the effect on blasting shaking to open-pit slope stability.According to characteristic function and membership function, fuzzy measures model on slope stability analysis is set up. And the fuzzy measure on slope unstability (unstability probability) is calculated. It reflects well the objective reality of slope stability.