›› 2010, Vol. 31 ›› Issue (3): 875-880.

• Geotechnical Engineering • Previous Articles     Next Articles

Propagation laws of blast wave in saturated soils with high saturation degree

MU Chao-min 1 2,4，REN Hui-qi3，LI Yong-chi1，XIN Kai3   

  1. 1. School of Energy Resources and Safety, Anhui University of Science and Technology, Huainan 232001, China; 2. Key Lab of Mining Coal Safety and Efficient Constructed by Anhui Province and Ministry of Education, Huainan 232001, China; 3. Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, China; 4. The Third Research Institute of the Corps of Engineering, General Staff of CPLA, Luoyang 470123, China
  • Received:2008-11-27 Online:2010-03-10 Published:2010-03-31

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Abstract:

An experiment of the explosion wave propagation in saturated soils is accomplished in the ? 2.5×5 m pothole. Measured pressure waveforms in different burial depths are gained in the saturated soils. The loads of the shock wave and the elastic wave are measured in the experiment. The boundary is obviously different between the shock wave and the elastic wave. A comprehensive analysis shows that the saturated soil has the nature of liquid-dynamic area appearing and the shock wave forming when the blast wave spreads in saturated soils. The bilinear progressively increasing-hardening constitutive relation in saturated soils is established. Dividing pressure is determined when the shock wave changes into the elastic wave.

Key words: mechanics of explosion, saturated soil, blast shock wave, constitutive relation

CLC Number: 

  • 0382+.2
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