By high speed photography,detonation propagating of different explosive faults nonel tubes was studied.In faults none1 tubes of 1745m/s,the maximum explosive faults length for the reliable detonation propagation is 20cm,while above 25 cm it definitely results in blasting interruption.Through the analysis of high speed photographs,wave speeds for successful detonation in the tube which consist of long distance explosive faults tends to change from normal to a minimum and then returns to normal,where the knee point does not appear at the junction point of normal nonel and explosive faults nonel,but within a short distance in the normal tube.The conclusion that critical speed of shock wave that keep explosive faults nonel tube reliable is 400m/s has also been obtained.%结合高速摄像技术对不同断药长度导爆管的传爆过程进行了试验研究,得到本试验所用1745m/s爆速导爆管的可靠传爆的最大断药长度为20cm,超过25cm必然断爆的结论.通过对高速摄像图像的分析,发现成功传爆的长间距断药管内及其前后的波速呈现出由正常到最小再到正常的规律,且其拐点并不出现在无药和有药的交界,而是在进入正常有药管一段距离之后.同时得到了维持导爆管可靠传爆的管内冲击波临界速度为400m/s的结论.
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