A FEASIBILITY STUDY OF THE HIGH PRECISION MAGNETIC METHOD FOR CHAMBER BLASTING MISFIRE DETECTION
Liu Lian-shen · Engineering Blasting · 2013
In the blasting engineering practice,the explosive unexploded would occupied a certain space after generating misfire.The problem of chamber blasting misfire detection could be attributed to detecting the abnormal physical properties of misfire.High-precision magnetic method was adopted in the chamber preset magnetic body,the magnetic field which generated by magnetic body disappeared after the blasting engineering.The misfire could be detected through the comparison between changes of magnetic field before and after blasting on the ground theoretically.The experiment results showed that high-precision magnetic method in misfire detection was still a difficult problem under current technological and economic conditions,but the feasibility study formed the foundation for detection and recognition of misfire in cham- ber blasting even deep-hole blasting.