Mitigation of surface impact loading effects on the underground structures with geofoam barrier: Centrifuge modeling

2018 ◽  
Vol 80 ◽  
pp. 128-142 ◽  
Author(s):  
Mohammad Hassan Baziar ◽  
Habib Shahnazari ◽  
Mohammad Kazemi
Keyword(s):  
Impact Loading ◽  
Centrifuge Modeling ◽  
Underground Structures ◽  
Loading Effects

Centrifuge Modeling of Surface Blast Effects on Underground Structures

2007 ◽  
Vol 30 (5) ◽  
pp. 100656 ◽  
Author(s):  
L. D. Suits ◽  
T. C. Sheahan ◽  
Anirban De ◽  
Thomas F. Zimmie
Keyword(s):  
Centrifuge Modeling ◽  
Underground Structures ◽  
Blast Effects

Blast and impact loading effects on glass and steel elements and materials

2019 ◽  
Vol 134 ◽  
pp. 384-394 ◽  
Author(s):  
Michael V. Seica ◽  
Jeffrey A. Packer ◽  
David Z. Yankelevsky
Keyword(s):  
Impact Loading ◽  
Loading Effects

Modelling Of Transport And Capture Of Particles In A Porous Medium

2019 ◽  
pp. 56-60
Keyword(s):  
Porous Medium ◽  
Asymptotic Solution ◽  
Retention Mechanism ◽  
Inverse Filtering ◽  
Underground Structures ◽  
Loose Soil ◽  
Monodisperse Suspension ◽  
Homogeneous Porous Medium ◽  
Model Equations ◽  
Pass Through

The study of the transport and capture of particles moving in a fluid flow in a porous medium is an important problem of underground hydromechanics, which occurs when strengthening loose soil and creating watertight partitions for building tunnels and underground structures. A one-dimensional mathematical model of long-term deep filtration of a monodisperse suspension in a homogeneous porous medium with a dimensional particle retention mechanism is considered. It is assumed that the particles freely pass through large pores and get stuck at the inlet of small pores whose diameter is smaller than the particle size. The model takes into account the change in the permeability of the porous medium and the permissible flow through the pores with increasing concentration of retained particles. A new spatial variable obtained by a special coordinate transformation in model equations is small at any time at each point of the porous medium. A global asymptotic solution of the model equations is constructed by the method of series expansion in a small parameter. The asymptotics found is everywhere close to a numerical solution. Global asymptotic solution can be used to solve the inverse filtering problem and when planning laboratory experiments.

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