(1. State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact，PLA University of Science and Technology，Nanjing，Jiangsu 210007，China；2. Nanjing University of Science and Technology，Nanjing，Jiangsu 210094，China；3. College of Field Engineering，PLA University of Science and Technology，Nanjing，Jiangsu 210007，China)
Abstract：The similitude law and the dimensionless equations of cratering explosions were derived. Some basic principles essential to the centrifugal modeling system and the vacuum chamber modeling system were described according to the similitude law of cratering explosions. Some characteristics of the two kind modeling systems were revealed through the parametrical sensitivity analyses. The sizes of centrifugal modeling box are proportional to both the scaled depth-of-burial(SDOB) and the scaled explosive weight，and the centrifugal acceleration is proportional to both the prototype explosive weight and scaled explosive weight. There are no special requirements about the modeling materials，the external pressures and the explosion source. Generally，the centrifugal modeling system has clear advantages in simulating the small-scale and shallow-depth explosions；while it can not simulate the large-scale explosions. Actually，the vacuum chamber modeling system is more controllable and variable as there is no need to provide additional acceleration. Therefore，the vacuum chamber modeling system has superiorities in simulating the large-scale cratering explosions；but it does not consider the physical process of rock crushing and can not simulate the cavity formations and the impact effects.
钱七虎. 大型抛掷爆破中重力的影响[J]. 解放军理工大学学报：自然科学版，2010，11(2)：103-105.(QIAN Qihu. Influence of gravity in large-scale throw blasting[J]. Journal of PLA University of Science and Technology：Natural Science，2010，11(2)：103-105.(in Chinese))
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2014, Vol. 33 
