However, the crack of rock in pre-split blasting is relevant to kind, geology, explosive and drill's distance, can hardly express each factor. So result in the rock to explain the process of crack, and the empirical formula can hardly expanded.
工程实践中多采用经验公式来设计和指导施工，由于岩石预裂爆破成缝过程受岩石性质、地质条件、装药量、孔间距等多种因素的制约，很难用一个精确的公式来表达各因素之间的关系，故造成岩石预裂爆破成缝不理想，经验公式很难推广。
参考来源 - 岩石预裂爆破成缝分析及爆破参数确定的智能研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Results indicate that the residual stress is useful to form the cracks between the shot-holes for smooth blasting, but not for pre-split blasting.
结果为：原岩应力的存在有利于光面爆破的炮孔间贯通裂纹的形成，不利于预裂爆破的炮孔间贯通裂纹的形成。
This paper presents a fracture mechanics model of smooth blasting and pre-split blasting, analyzes the function of stress waves and quasi-static pressure of explosion in blasting process.
本文提出了光面爆破和预裂爆破的断裂力学模型，分析了应力波、爆生气体准静态压力在爆破破裂过程中的作用。
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