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Investigations into mechanism of crack formation for grooved hole well blasting

Zong Qi (Department of Civil Engineering, Huainan Mining Institute,Huainan ,232001)  
Based on the theory of rock fracture mechanics and function of explosion gas,the beginning and end condition as well as the developing direction, speed and length are analysed when decoupling charge is adopted for symmetric grooved hole well. Crack dynamic effects of grooved blasting are preliminary investigated. Theoretical reference is offfered for the determination of grooved blasting parameters.
【CateGory Index】: TD235,
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