TRANSIENT POROELASTIC RESPONSE OF EQUIVALENT POROUS-MEDIA OVER A MINING PANEL

被引：10

作者：

BAI, M

ELSWORTH, D

机构：

[1] School of Petroleum, Geological Engineering The University of Oklahoma, Norman

[2] Department of Mineral Engineering The Pennsylvania State University University Park

来源：

ENGINEERING GEOLOGY | 1993年 / 35卷 / 1-2期

关键词：

D O I：

10.1016/0013-7952(93)90069-O

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

A transient poroelastic formulation based on the Biot consolidation theory is presented to study the impact of underground longwall mining of coal on strata deformation and the subsequent modification of hydrogeological properties. A finite-element model is used where the geometric conditions may be complex. The important parameters in this model are identified as pore pressure ratio, alpha1 and relative compressibility, alpha2 with the latter exerting far greater influence on the resulting fluid pressure field than the former. This study indicates that the fluid pressure distribution is strongly controlled by the stress distribution, or the strata deformation induced by mining has a great impact on the change in hydrogeological environment in the mining region.

引用

页码：49 / 64

页数：16

共 25 条

[1]

Bear, Dynamics of Fluids in Porous Media, (1972)

[2]

Biot, General theory of three dimensional consolidation, J. Appl. Phys., 12, pp. 155-164, (1941)

[3]

Booker, The consolidation of a finite layer subject to surface loading, Int. J. Solids Struct., 10, pp. 1053-1605, (1974)

[4]

Booker, Small, A method of computing the consolidation behaviour of layered soils using direct numerical inversion of Laplace transforms, International Journal for Numerical and Analytical methods in Geomechanics, 11, pp. 363-380, (1974)

[5]

Detournay, Cheng, Poroelastic response of a borehole in a non-hydrostatic stress field, Int. J. Rock Mech. Min. Sci. Geomech. Abstr., 25, 3, pp. 171-182, (1988)

[6]

Froier, Nilson, Samuelsson, The rectangular plane stress element by Turner, Pian and Wilson, International Journal for Numerical Methods in Engineering, 8, 2, pp. 433-437, (1974)

[7]

Ghaboussi, Wilson, Flow of compressible fluid in porous elastic media, International Journal for Numerical Methods in Engineering, 5, pp. 419-442, (1973)

[8]

Geertsma, The effect of fluid pressure decline on volumetric changes of porous rocks, Trans. AIME, pp. 331-340, (1957)

[9]

Hasenfus, Johnson, Su, A hydrogeomechanical study of overburden aquifer response to longwall mining, Proc. 7th Int. Conf. Ground Control in Mining, pp. 149-162, (1988)

[10]

Huyakorn, Pinder, Computational Methods in Subsurface Flow, (1983)

← 1 2 3 →