scholarly journals Numerical simulation to determine the critical safe thickness of water-resisting rock wall based on FLAC3D

2017 ◽  
Author(s):  
Fan Chen ◽  
Jiaqi Guo
Keyword(s):  
Numerical Simulation ◽  
Rock Wall ◽  
Safe Thickness

Study on Safe Thickness of Comparatively Intact Rock Ahead of Karst Tunnel Face

2011 ◽  
Vol 90-93 ◽  
pp. 2456-2459 ◽  
Author(s):  
Jia Qi Guo ◽  
Lian Wei Ren ◽  
Xi Liang Liu
Keyword(s):  
Mechanical Model ◽  
Water Pressure ◽  
Water Inrush ◽  
Intact Rock ◽  
Tensile Fracture ◽  
Karst Tunnel ◽  
Tunnel Face ◽  
Rock Wall ◽  
Safe Thickness ◽  
Tension Strength

Under the effect of water pressure in karst cave before tunnel face, water inrush happens when excavation face enters into the minimal value of safe thickness. Aiming at comparatively intact rock ahead of karst tunnel face, rock wall often appears to be tensile fracture. With some hypotheses, a mechanical model of water inrush for tunnel face instability has been established, furthermore, the analytical expression to calculate safe thickness of rock wall has been given based on the criteria of tension strength through elastical theories. Combined with Maluqing tunnel in Yiwan line, applicability and reliability of formula is discussed.

Study on Safe Thickness of Stope Roof and Ground Subsidence Based on Numerical Simulation

2014 ◽  
Vol 1065-1069 ◽  
pp. 71-75
Author(s):  
Shuai Hua ◽  
Yun An Li ◽  
Yue Wei Wang ◽  
Qin Gang Wang ◽  
Wei Wang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Calculation Model ◽  
Simulation Software ◽  
Ground Subsidence ◽  
Minimum Thickness ◽  
Finite Element Software ◽  
Whole Process ◽  
Mechanics Model ◽  
Mine Excavation ◽  
Safe Thickness

It is mainly discussed that the minimum safe thickness of the stope roof and the ground subsidence deformation during mine excavation. The concrete method is deducing the theoretical calculation formula of minimum thickness of the stope roof according to the bending and shearing structural mechanics model respectively so as to gain the minimum safe thickness; A detailed engineering geological 3d model for mining concessions is built by using Auto CAD,and next a numerical calculation model is established by using ANSYS finite element software,following by importing it to numerical simulation software FLAC3D for calculation. By this method,the whole process of mine excavation can be simulated. Finally,the ground subsidence deformation obtained by simulation satisfies the specification requirements.

Water uptake by substituted amylose tablets: experimentation and numerical simulation

2009 ◽  
Vol 00 (00) ◽  
pp. 090904073309027-8
Author(s):  
H.W. Wang ◽  
S. Kyriacos ◽  
L. Cartilier
Keyword(s):  
Numerical Simulation ◽  
Water Uptake
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