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研究裂纹技术应用于分离脆性块体的分离理论和分离方法。在理论上，着重论述了切口设计、敏感应力场设计、有控断裂设计和临界预荷力计算等重大问题，给出了促使固体材料快速、低能耗有控分离的适宜参数；在实用上，针对石油化工行业报废的大量抽油机铸铁平衡块急待破断这一工程实际课题，提出三点弯曲冲击法和楔形冲击加载法两种适宜预荷方式，基本上解决了大型废旧铸件有效回收利用的问题，经济效益显著。
The separation theory and separation method of crack technology applied to the separation of brittle blocks are studied. In theory, some important problems such as incision design, design of sensitive stress field, controlled fracturing design and critical pre-load calculation are emphatically discussed, and the suitable parameters that promote the controlled separation of solid materials rapidly and with low energy consumption are given. In practice, Aiming at the practical problems that a large number of cast iron balance weights of oil pumping station scrapped to be broken urgently in the petrochemical industry, two suitable preloading modes of three-point bending impact method and wedge impact loading method are proposed, which basically solve the problem of effective recycling of large scale waste castings The problem, significant economic benefits.