1987 Fiscal Year Final Research Report Summary

Coupled Stress and Fluid Flow Analysis for Jointed Rock Masses

Research Project

Project/Area Number	61550347
Research Category	Grant-in-Aid for General Scientific Research (C)
Allocation Type	Single-year Grants
Research Field	基礎・土質工学
Research Institution	Faculty of Engineering, Saitama University
Principal Investigator	ODA Masanobu Associate Professor Faculty of Engineering,Saitama University, 工学部, 助教授 (90008855)
Co-Investigator(Kenkyū-buntansha)	YAMADE Tadashi Assistant.Faculty of Engineering,Saitama University, 工学部, 助手 (40125894)
Project Period (FY)	1986 – 1987
Keywords	Rock mass / Deformation analysis / Fluid flow analysis / 地質不連続面
Research Abstract	To provide a set of governing equations for solving the coupled stress and fluid flow, a rock mass, which commonly contains a large number of geological discontinuities, is treated as an anisotropic, elastic porous medium with the corresponding elastic compliance and permeability tensors, hydro-mechanical equivalents to the discontinuous mass. The hydro-mechanical equivalents, with the special emphasis on the permeability tensor, are formulated on the assumption that cracks can be replaced by a set of parallel planar plates connected by two springs. Two-dimensional numerical analyses on seepage flow networks support the validity of the permeability tensor. Some field evidence is analyzed to examine the applicability of the present model for the practical purpose of rock hydraulics.