Abstract: The essence of green blasting is to improve the utilization level of explosion energy,increase the beneficial work related to rock breaking effect as much as possible,and reduce harmful work,ineffective work,heat loss and energy loss.Based on the theory of thermodynamics,the mechanism of explosion energy conversion is preliminary studied under the detonation gas loading.The stage,condition,path,cost and influencing factors of the conversion of internal heat energy carried by explosive gas into work is also explored.The physical and mechanical model of explosion energy conversion process including three conversion processes is established.The study reveals the distribution law of explosion energy in the near,middle and far areas of blasting.Four main final transformation forms of explosion energy are pointed out:rock breaking work,heat exchange loss,gas leakage loss and dynamics energy loss.On this basis,the implementation path of green blasting is discussed.

Key words: green blasting,explosion energy conversion,energy utilization,energy distribution