The effect of the parameters of the NAM hydrological model on the depth of runoff volume, flood peak discharge and flood peak appearance time was researched by GRA (grey relation analysis).

Although the peak value of return shock is relatively low, the effect time is long and sometimes the scope excesses the maximal overpressure of some deflagration condition.

The pulsed current peak value and EP time have a important effect on removal of the surface oxide, the lower frequency should be adopted for thin sheet of aluminium alloy.