Research On Field Measurement Technology Of Detonation Pressure For Industrial Explosive

Explosive has an irreplaceable role in the military field. Also, compared with the mechanical operation, explosive detonation owns higher efficiency, greater economic benefit, better effect, bigger safety, more simple and convenient process in some civil field. The application of industrial explosive is becoming more and more common. The velocity and pressure of explosive detonation are the important parameters for studying explosive, there are many methods for theoretical calculating and experimental measuring. The measurement of detonation velocity is more convenient, higher precision. But the measurement of detonation pressure is more complex, usually, it is only measured indirectly. And the measurement is often performed under laboratory conditions, there is none related articles about the field measurement on industrial explosives. This paper will take experiment research on field measurement technology of industrial explosive detonation pressure.Through transforming the probe, which is originally used for continuous measuring the underwater explosion (changing the core components, replace the skeleton materials, choose paraffin as medium material), take continuous measurement research on stabile detonation and shock wave propagation of anfo explosives in the large diameter hole (Φ=115 mm), obtain continuous variation signal. According to the C-J model of detonation wave, the law of mass conservation and momentum conservation, the calculation formula of detonation pressure and shock wave pressure can be deduced. Then detonation pressure and velocity, shock wave velocity and pressure are computed. According to the shock-state equation of porous materials generalized along equal-pressure, the parameters of the shock wave in paraffin containing micro bubbles are solved corrected.Through the fold design probe and detonating cord experiments, analyze the data from three aspects, distortion is verified exist in the signal. The logical cause can be inferred:the work frequency of the internal electronic components cannot meet data sampling frequency of the instrument. The self-calibration continuous resistance wire probe is designed, it can be applied for calibrating many kinds of signal collceting device.