In order to research the decay laws of pressure wave and positive pressure actuation duration with the increasing propagation distance under the repeated penetration and explosion of conventional weapons in rock,the tests with varying scale charge and scale distance of the first drilled explosion and the repeated drilled explosion are completed.

In order to explore the breakage and damage effect problems of the underground protective engineering in rock under repeated penetration and explosion by precision guided weapons,the contrastive experiments of single-time drilled explosion and secondary drilled explosion have been accomplished.