›› 2010, Vol. 31 ›› Issue (5): 1574-1578.

• Geotechnical Engineering • Previous Articles     Next Articles

Experiment study of explosion energy coupling coefficient with different burial depths in saturated soils

MU Chao-min 1, 2, 3, 4, REN Hui-qi4, LI Yong-chi3, XIN Kai4   

  1. 1. School of Energy Resources and Safety, Anhui University of Science and Technology, Huainan Anhui, 232001, China; 2. Key Laboratory of Mining Coal Safety and Efficiently Constructed by Anhui Province and Ministry of Education, Huainan Anhui, 232001, China; 3. Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, China; 4. Luoyang Institute of Hydraulic Engineering and Technology, Luoyang Henan, 470123, China
  • Received:2009-09-01 Online:2010-05-10 Published:2010-05-24

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Abstract:

The experiment of explosion wave propagation in saturated soils is accomplished in the ? 2.5 m×5 m pothole. Free-field experiments of explosion with different burial depths in saturated soils are carried out. The macro characteristics of explosion and recorded waveforms of pressure are presented. The recorded results are interpreted. The propagation laws of shock wave in saturated soil, the data of coupling coefficient and the coupling coefficient curve are obtained. The experiments show that the minimal scaled buried depth is 2.62 m/kg1/3 for close explosion in free-field. When the minimal scaled buried depth exceeds 2.62 m/kg1/3, the peak pressure and momentum influenced by the scaled buried depth is very little. At this point the mostly energy of explosion is closed in saturated soils.

Key words: mechanics of explosion, explosion in saturated soils, experimental study, coupling coefficient

CLC Number: 

  • O 382+.2
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