摘要
从静力学出发，根据弹性力学和结构力学理论，推导出了一个包含岩石和炸药性质、爆破几何参数以及被爆岩石的破碎程度等因素。
Deduces a formula about the minimum charge quantity that apply to two freedom surfaces bench blasting,it includes the factors such as the characters of the stone blasted and the explosive,the geometric parameters,the fracture degree of the stone blasted,from the statics and based on the theory of the elastic mechanics and the structural mechanics
