|
Abstract 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. The experimental results show that the peak pressure and positive pressure actuation duration by the first drilled explosion on the same measuring points are less than those by repeated drilled explosion；the decay speeds of peak pressure and positive pressure actuation duration by the first drilled explosion are lower than those by repeated drilled explosion，and their decay tendency are in agreement with the decay laws of pressure wave in rock under the same experiment conditions. The decay curves of peak pressure and positive pressure actuation duration with increasing scale distance have been given by the analysis of test results，and the corresponding empirical formulas have been presented. The exponential decay laws of peak pressure and positive pressure actuation duration with increasing scale distance have been discovered.
|
|
Received: 18 April 2007
|
|
|
|
