爆炸破碎区域划分的模糊数学方法

本文以最大径向应力,最大剪应力和最大切向应力为主要的破碎准则,利用二元分配法分析了诸破碎准则间权的分配,采用正态函数、降正态函数和升正态函数为各个破碎准则的录属函数,由此提出了爆炸破碎的过粉碎区,初始裂缝区和纯粹拉断区划分的综合评价方法。实例证明,对于大药量或小药量爆炸,以上方法均可成立。

CLASSIFICATION OF CRACK ZONES BY BLASTING USING THE METHOD OF FUZZY THEORY

In (his paper, a method of Fuzzy theory for the classification of the crack zones by blasting is developed. The authors adopt the maximum radial stress. maximum shear stress and maximum tangential stress as the main crack criterions. By the method of two element distribution, the authors analysed the distribution of the weights among the crack criterions, by using the normal distribution function, descending normal distribution function and the ascending normal distribution function as the subordinate function of the crack critri ion respectively, they divide the crack zones in three classes: the super crack zone ,the initial crack zone and the pure tensile zone.Then a synthesized evaluating method is proposed. As exapmples. it is demonstrated that this method may be used for large or small amount of explosives.