Characterization of blast-induced craters in low-moistureand saturated sand from field experiments

Jia Yongsheng; Wang Weiguo; Xie Xianqi; Yang Gui; Yao Yingkang

doi:10.11883/1001-1455(2017)05-0799-08

Volume 37 Issue 5

Jul. 2017

Turn off MathJax

Article Contents

Article Navigation > Explosion And Shock Waves > 2017 > 37(5): 799-806

Jia Yongsheng, Wang Weiguo, Xie Xianqi, Yang Gui, Yao Yingkang. Characterization of blast-induced craters in low-moistureand saturated sand from field experiments[J]. Explosion And Shock Waves, 2017, 37(5): 799-806. doi: 10.11883/1001-1455(2017)05-0799-08

Citation:

Jia Yongsheng, Wang Weiguo, Xie Xianqi, Yang Gui, Yao Yingkang. Characterization of blast-induced craters in low-moistureand saturated sand from field experiments[J]. Explosion And Shock Waves, 2017, 37(5): 799-806. doi: 10.11883/1001-1455(2017)05-0799-08

Citation:

PDF( 6553 KB)

Characterization of blast-induced craters in low-moistureand saturated sand from field experiments

doi: 10.11883/1001-1455(2017)05-0799-08

Jia Yongsheng¹,
Wang Weiguo^{2
,
,},
Xie Xianqi^{1, 3},
Yang Gui³,
Yao Yingkang^{1, 3}

1.
Wuhan Municipal Construction Group, Wuhan 430023, Hubei, China
2.
Ningbo Communication Construction Engineering Testing Center Co. Ltd, Ningbo 315124, Zhejiang, China
3.
College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, Jiangsu, China

Received Date: 2016-01-04
Rev Recd Date: 2016-06-07
Publish Date: 2017-09-25

Abstract

Abstract

Craters are the main response-induced form of underground explosion loadings. A series of field experiments were conducted in low-moisture and saturated sand in a large-scale experiment pit to study crater formation induced by underground explosions. The influence of charge mass, burial depth and moisture content on the crater diameter were analyzed. The results showed that, for a crater in sand with a low-moisture content, the eventual form may fall into one of the three types, formed respectively by enclosed explosion, cast blasting and soil collapse. The critical scaled burial depth for a crater from the enclosed explosion is about 2.3 m/kg^1/3, that for crater from cast blasting is 1.5 m/kg^1/3 or less, and that for a crater from soil collapse is 1.5~2.3 m/kg^1/3. For a crater in saturated sand, the soil particles close to the crater were liquefied due to porewater pressure rise under explosion loadings. Thus, the lateral dimension of a crater was enlarged due to the flow and the collapse of the soil particles. The diameter of the crater in saturated sand can extend up to 1.25~1.35 times that of the crater in low-moisture sand under the same explosion loading. The greatest scaled burial depth of an enclosed explosion in saturated sand may reach 2.5 m/kg^1/3 based on the experiments.
- low-moisture sand,
- saturated sand,
- filed experiment,
- crater formation,
- dimension of crater,
- burial depth

FullText(HTML)

References(12)

References

[1]	连峰, 龚晓南, 徐杰, 等.爆夯动力固结法加固软基试验研究[J].岩土力学, 2009, 30(3):859-864. doi: 10.3969/j.issn.1000-7598.2009.03.052 Lian Feng, Gong Xiaonan, Xu Jie, et al. Experimental research on soft foundation treatment by blasting ramming dynamic consolidation[J]. Rock and Soil Mechanics, 2009, 30(3):859-864. doi: 10.3969/j.issn.1000-7598.2009.03.052
[2]	Gohl W B, Martin T, Elliott R J. Explosive compaction of granular soils and in situ liquefaction testing using sequential detonation of explosives[C]//Proceedings of the 1st International Symposium on Ground Improvement Technologies and Case Histories. Singapore, 2010: 199-207.
[3]	穆朝民, 任辉启, 辛凯, 等.变埋深条件下土中爆炸成坑效应[J].解放军理工大学学报(自然科学版), 2010, 11(2):112-116. http://d.old.wanfangdata.com.cn/Periodical/jfjlgdxxb201002003 Mu Chaomin, Ren Huiqi, Xin Kai, et al. Effects of crater formed by explosion in soils[J]. Journal of PLA University of Science and Technology (Natural Science Edition), 2010, 11(2):112-116. http://d.old.wanfangdata.com.cn/Periodical/jfjlgdxxb201002003
[4]	穆朝民, 任辉启, 李永池, 等.变埋深条件下饱和土爆炸能量耦合系数的试验研究[J].岩土力学, 2010, 31(5):1574-1578. doi: 10.3969/j.issn.1000-7598.2010.05.039 Mu Chaomin, Ren Huiqi, Li Yongchi, et al. Experiment study of explosion energy coupling coefficient with different burial depths in saturated soils[J]. Rock and Soil Mechanics, 2010, 31(5):1574-1578. doi: 10.3969/j.issn.1000-7598.2010.05.039
[5]	施鹏, 辛凯, 杨秀敏, 等.土中装药不同埋深爆炸试验研究[J].工程力学, 2006, 23(12):171-174. doi: 10.3969/j.issn.1000-4750.2006.12.030 Shi Peng, Xin Kai, Yang Xiumin, et al. Experimental study of explosion with different burial depths in soil[J]. Engineering Mechanics, 2006, 23(12):171-174. doi: 10.3969/j.issn.1000-4750.2006.12.030
[6]	Simpson P T, Zimmie T F, Abdoun T B. Explosion tests on embankment models in the geotechnical centrifuge[C]//Proceedings of International Conference on New Developments in Geoenvironmental and Geotechnical Engineering. Incheon, Korea: Korean Institute of Construction Technology Education, 2006: 1-8.
[7]	钱七虎, 王明洋.岩土中的冲击爆炸效应[M].北京:国防工业出版社, 2010.
[8]	钱七虎.大型抛掷爆破中的重力影响[J].解放军理工大学学报(自然科学版), 2010, 11(2):103-105. http://d.old.wanfangdata.com.cn/Periodical/jfjlgdxxb201002001 Qian Qihu. Influence of gravity in large-scale throw blasting[J]. Journal of PLA University of Science and Technology (Natural Science Edition), 2010, 11(2):103-105. http://d.old.wanfangdata.com.cn/Periodical/jfjlgdxxb201002001
[9]	Ambrosini R D, Luccioni B M, Danesi R F. Influence of the soil properties on craters produced by explosions on the soil surface[J]. Mecánica Computacional, 2004, 73(3):1-20.
[10]	Luccioni B M, Ambrosini R D, Nurick G N, et al. Craters produced by underground explosions[J]. Computers and Structures, 2009, 87(21/22):1366-1373.
[11]	Wang P, Xei X A, He W D. Preparation and performance of a novel water gel explosive containing expired propellant grains[J]. Central European Journal of Energetic Materials, 2013, 10(4):495-507.
[12]	Hyde D W. Microcomputer programs of TM5-855-1: ConWep[Z]. Army Engineers Waterways Experimentation Station, US Army, 1988.