The paper introduces the research and applications of piezoelectric ceramics in ignition and detonation, and summarize some effective methods for improving the properties and ageing of ceramic ma terials.

In order to analyze the effect of material models,arithmetic methods and mesh sizes on the results and precision,the detonation process of covered charge impacted by cylindrical steel fragment with flat head was simulated by non-linear dynamic analysis program LS-DYNA3D.

Detonatiory of charge behind the target plate is then studied, and a formula for calculating the detonation velocity is educed.

Jet initiation process of TATB and X02 (mixture of TATB and HMX)explosives is simulated by means of the Lagrange 2D-FPM code,the equation of state of TATB and the chemical rate function being as listed in reference 1.

Using the method of ALE arithmetic of LS-DYNA to simulation the formation process and the initiation process of shelled explosive of shaped charge jet.

Then, how to detonate dynamite behind of target plate was studied in the paper, and a formula of calculating detonated velocity was deduced.

Through methane simulation experiment on ignition and blasting due to seam roof rock friction in Qinshui Coal Mining District of Yangcheng, it is shown that sparks will be generated through friction while caving ,causing gas and water mixture to fire, it is big hidden sources which cause methane blasting accident in goaf.