(1. College of Mechanical Engineering，Nanjing University of Science and Technology，Nanjing，Jiangsu 210094，China； 2. State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact，PLA University of Science and Technology，Nanjing，Jiangsu 210007，China)
Based on the methods of physical modeling of large-scaleexcavation explosionsin the vacuum chamber，the similarity conditions forthe experimental material parameters are given. By use of shear cell module of the FT4 multifunctional powder flow tester，the main physical parameters of the quartz sands with particle sizes from 0.3 to 0.6mm have successfully gained for the first time，and the relationships between the shear resistance and particle size，moisture(glycerin) content for the quartz sand are presented. The applicability in the laboratory model of large-scalethrow blasting was also discussed. The results show that，the characteristic grain sizes range from 0.3 to 0.6mm for the experimental materials could be used as the simulation material of the large-scale underground explosions with the equivalent of 0.1–100 kt TNT. The material parameters for theshear strength of quartz sandsare well satisfied the similarity conditions of large scale excavation explosions considering the effect of gravity，and suggested wide applicability to the model test. The material parameters can provide important reference and basis for the experimental simulation and numerical calculation of large scale throw blasting.
徐小辉1，2，邱艳宇1，2，王明洋1，2，赵章泳2. 大当量地下浅埋爆炸真空室模拟相似材料研究[J]. 岩石力学与工程学报, 2018, 37(S1): 3550-3556.
XU Xiaohui1，2，QIU Yanyu1，2，WANG Mingyang1，2，ZHAO Zhangyong2. Similar materials for vacuum chamber model test under large scale throw blasting. , 2018, 37(S1): 3550-3556.
钱七虎. 岩石爆炸动力学的若干进展[J]. 岩石力学与工程学报，2009，28(10)：1945-1971.(QIAN Qihu. Some advances in rock blasting dynamics[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(10)：1945-1971.(in Chinese))
[2]
岳松林，邱艳宇，王德荣，等. 岩石中爆炸成坑效应的模型试验方法及对比分析[J]. 岩石力学与工程学报，2014，33(9)：1925-1932.(YUE Songlin，QIU Yanyu，WANG Derong，et al. Modeling experiment methods for crating effects of explosions in rocks and comparative analysis[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(9)：1925-1932.(in Chinese))
[3]
马立秋，张建民，张 武. 爆炸离心模型试验研究进展与展望[J]. 岩土力学，2011，32(9)：2 827-2 833.(MA Liqiu，ZHANG Jianmin，ZHANG Wu. Development and prospect for centrifugal blasting modeling[J]. Rock and Soil Mechanics，2011，32(9)：2 827-2 833. (in Chinese))
[4]
范一锴，陈祖煜，梁向前，等. 砂中爆炸成坑的离心模型试验分析方法比较[J]. 岩土力学与工程学报，2011，30(增2)：4 123-4 128. (FAN Yikai，CHEN Zuyu，LIANG Xiangqian，et al. Comparison of three methods for geotechnical centrifuge model tests of explosion cratering in sand[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(Supp.2)：4 123-4 128.(in Chinese))
[5]
SADOVSKII M A，ADUSHKIN VV，RODIONOV V N，et al. A method of modeling large cratering explosions[J]. Combustion，Explosion and Shock Waves，1967，3(1)：73-79.
[6]
ADUSHKIN VV，PERNIK LM. Large-scale blasting-down in opening-up the tyrnyauz deposit[J]. Journal of Mining Science，1976，12(4)：381-384.
[7]
ADUSHKIN VV，PERNIK L M. Characteristics of the formation of subsidence craters[J]. Fizika Goreniya IVzryva，1972，8(4)：541-552.
[8]
VAKHRAMEEV Y S.Physical principles of modeling excavationexplosions[J]. Combustion，Explosion and Shock Waves，1995，31(1)：123-130.
[9]
BLINOV I M，VAKHRAMEEV Y S.Method of modelingof large excavation explosions by microexplosionsof explosive[J]. Combustion，Explosion and Shock Waves，1995，31(2)：102-109.
[10]
BLINOV I M.Mechanism andconditions of hill formation at the crater bottom in an excavation explosion[J].Combustion，Explosion and Shock Waves，2004，40(6)：679-685.
[11]
中华人民共和国国家标准编写组. GB/T50123—1999 土工试验方法标准[S]. 北京：中国计划出版社，1999.(The NationalStandardsCompilation Group of People¢s Republic of China. GB/T50123—1999 Standard for soil test method[S]. Beijing：China Planning Press，1999.(in Chinese))
[12]
谈庆明. 量纲分析[M]. 合肥：中国科学技术大学出版社，2005：17.(TAN Qingming. Dimensional analysis[M]. Hefei：University of Science and Technology of China Press，2005：17.(in Chinese))
[13]
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 gravityin large-scale throw blasting[J]. Journal of PLA University of Scienceand Technology：Natural Science，2010，11(2)：103-105.(in Chinese))
2018, Vol. 37 
