Discussion on the nonlinear seepage model of the fractured Rock mass under excavating

Author

Ni, Xiaodong ; Xia, Zhihao ; Wang, Yuan

Author_Institution

Tunnel & Urban Rail Transit Res. Inst., Hohai Univ., Nanjing, China

fYear

2011

fDate

22-24 April 2011

Firstpage

4933

Lastpage

4936

Abstract

The process of surrounding rock crushing and water rushing under excavating or mining contains four phase, Darcy laminar flow in the aquifer, High velocity(relativity) Non-Darcy flow in transitional zone and fracture zone, and the Navier-Stokes turbulence in drift. In this paper, a model was suggested to simulate the process of fluid flows surround the fractured rock mass, in which Darcy flow and non-Darcy flow in Rock mass have been considered together. In this model, the aquifer, transitional zone, fracture zone and drift was connected together by coupling the Darcy Equation, Brinkman Equation, Forchheimer Equation and Navier-Stokes Equation. Some examples were performed, and the results show the reliability of this model.

Keywords

Navier-Stokes equations; laminar flow; mining; Brinkman equation; Darcy laminar flow; Forchheimer equation; Navier-Stokes equation; Navier-Stokes turbulence; aquifer; excavation; fracture zone; fractured rock mass; high velocity non-Darcy flow; mining; nonlinear seepage model; rock crushing; transitional zone; water rushing; Equations; Fluid flow; Jacobian matrices; Mathematical model; Media; Nickel; Rocks; Brinkman equation; Darcy equation; Forchheimer Equation; Navier-Stokes equation; Nonlinear Seepage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Technology and Civil Engineering (ICETCE), 2011 International Conference on

Conference_Location

Lushan

Print_ISBN

978-1-4577-0289-1

Type

conf

DOI

10.1109/ICETCE.2011.5776356

Filename

5776356