Original Paper

Journal of Engineering Research

, 3:32

First online:

Open Access This content is freely available online to anyone, anywhere at any time.

The effect of sand layer thickness and moisture content on underground structures behavior due to surface blasting

  • R. BasiratAffiliated withRock Mechanics Engineering, Mining and Metallurgical Engineering Department, Amirkabir University of Technology Email author 
  • , G. A. Dehghan NiriAffiliated withCivil Engineering, Civil Engineering Department, Yazd University
  • , R. A. IzadifardAffiliated withCivil Engineering Department, Imam Khomeini International University

Abstract

Surface and underground explosions make extensive destruction and damage to structures. These explosions can generate heavy shocks to ground. There are several approaches to reduce these effects. One way to reduce these damages is by sand layer, which is the most economically viable method. As the sand layer reduces highfrequency stress waves effectively, it decreases damage to structure. In this paper, the behavior of tunnels (underground structures) with different thickness of sand layer and moisture content under surface explosion are investigated by finite element method (FEM). Numerical results indicate that with increasing of sand layer thickness and moisture, the effect of surface explosions on the underground structures is decreased.

Keywords

FEM sand layer surface blasting underground structures