충격진동 예측방법에 관한 연구

Abstract

Generally, in case that we predict the vibration by blasting, we compute it on the basis of the charge weight per delay but in case of shocking vibration breaking out by blasting demolitions, we apply the weight and falling height of the structure. Vibration level is determined by blasting site, geometrical forms of nearly structures and both geologic features and dynamic factors of the rock mass, such conditions are similar conditions in blasting vibration. All such conditions affect shocking vibration and preceding features and among them ;weight and height of the structure the distance of a security building(a surverying station) are the most important factors to effect. Because blasting demolition is mostly in use for the removal of the high building in the downtown area it causes serious problems to damage safety stuff by the vibration from the falling shock. To make up for such problems, the study about the vibration-control measure and shocking vibration by falling weight has been going on. This study suggests new equation that use impact power for the parameter for the method of shocking vibration prediction by falling weight, and it tries to prove by falling test. Also it suggest a method of the shocking vibration prediction to adopt vibration superposition theory according to the delay time that shocks on surface by falling weight.