The influence of permeability characteristics of rock mass on hydrogeological engineering

The permeability characteristics of rock mass discontinuities are important in the stability of hydropower station projects. We propose a large-scale in situ seepage testing method and use this method to test gently dipping bedding faults (C3 zone) and steep faults (F14) in a hydropower station construction field in China. The in situ test results are compared with those of both undisturbed and reconstituted specimens. The comparison indicates that the largest critical hydraulic gradient and the smallest seepage permeability coefficient are obtained via in situ tests because they are performed under stress states that simulate the natural stress of the surrounding rock mass. The natural stress of the surrounding rock mass cannot be reflected in tests of undisturbed and reconstituted specimens.

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Permeability characteristics of fractured rock mass: a case study of the Dongjiahe coal mine

Geomatics Natural Hazards and Risk ◽

10.1080/19475705.2020.1811403 ◽

2020 ◽

Vol 11 (1) ◽

pp. 1724-1742 ◽

Cited By ~ 1

Author(s):

Ke Ma ◽

Longjiang Wang ◽

Yilin Peng ◽

Liji Long ◽

Sujian Wang ◽

...

Keyword(s):

Rock Mass ◽

Coal Mine ◽

Fractured Rock ◽

Fractured Rock Mass ◽

Permeability Characteristics

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Physical Properties of Isolated Perfused Renal Tubular Basement Membranes

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100065997 ◽

1971 ◽

Vol 29 ◽

pp. 390-391

Author(s):

Jared Grantham ◽

Larry Welling

Keyword(s):

Basement Membrane ◽

Basement Membranes ◽

Transport Mechanisms ◽

Permeability Characteristics ◽

Peritubular Capillaries ◽

Strategic Location ◽

Tubular Lumen ◽

Glomerular Filtrate ◽

Urine Formation ◽

Renal Tubular

In the course of urine formation in mammalian kidneys over 90% of the glomerular filtrate moves from the tubular lumen into the peritubular capillaries by both active and passive transport mechanisms. In all of the morphologically distinct segments of the renal tubule, e.g. proximal tubule, loop of Henle and distal nephron, the tubular absorbate passes through a basement membrane which rests against the basilar surface of the epithelial cells. The basement membrane is in a strategic location to affect the geometry of the tubules and to influence the movement of tubular absorbate into the renal interstitium. In the present studies we have determined directly some of the mechanical and permeability characteristics of tubular basement membranes.

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