An energy method for calculate borehole pressure under decoupled charging

In this paper,Firstly,current calculation formula for calculate borehole pressure under decoupled charging is appraised and the doubtful points are pointed out.Secondly,based on the concept of instantaneous detonation as well as considering the procedure of explosive loading exerted on borehole as the quasi-static isentropic dilation,the formula for calculate borehole pressure under decoupled charging is educed.Finally,the method proposed by this paper and the current formulas are compared.It is believed that the Increase Factor is not a constant but increases with the coefficient of decoupled charging.