lecture_08 - n, S AND S y r K i Cd 2 Q KA ( h 1...

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LECTURE 8 - GROUNDWATER 8.1 GROUNDWATER TERMS METEORIC WATER CONNATE WATER MAGMATIC OR JUVENILE WATER RECHARGE 8.2 USES OF GROUNDWATER IRRIGATION INDUSTRY PUBLIC WORKS RURAL 8.3 ZONES OF VERTICAL DISTRIBUTION UNSATURATED ZONE (ZONE OF AERATION) SOIL WATER PELLICULAR AND GRAVITATIONAL WATER CAPILLARY WATER SATURATED ZONE GROUNDWATER WATERTABLE 8.4 HYDROLOGIC PARAMETERS POROSITY n
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n 100 V v V v % s S y 100 V d V v % s S r 100 V r V v % s WHERE: V = VOLUME OF VOIDS v V = VOLUME OF VOIDS AND SOLID v+s UNITS: PERCENT OR DECIMAL EXAMPLES EFFECTIVE POROSITY n e SPECIFIC YIELD S y WHERE: V = VOLUME OF DRAINED PORES (24HR) d UNITS: PERCENT OR DECIMAL EXAMPLES: SPECIFIC RETENTION S r ` WHERE: V = VOLUME OF UNDRAINED PORES 24HR r UNITS: PERCENT OR DECIMAL EXAMPLE OF SPECIFIC RETENTION RELATIONSHIP BETWEEN
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Unformatted text preview: n, S AND S y r K i Cd 2 Q KA ( h 1 & h 2 ) ) l & KA ) h ) l & K Q A dh dl INTRINSIC PERMEABILITY WHERE K =f(media) i C = SHAPE FACTOR d = MEAN PORE DIAMETER HYDRAULIC CONDUCTIVITY K WHERE: K = f(media, fluid) Q = DISCHARGE A = AREA l = LENGTH h , h = HEAD AT 1 AND 2 1 2 UNITS L/T (M/S; CM/SEC; GPD/FT ) 2 EXAMPLES: K K i ( K i ( D ) g K v & K h 10 RELATION BETWEEN K and K i WHERE: ( = SPECIFIC WEIGHT = DYNAMIC VISCOSITY D = DENSITY UNITS: L (CM ; DARCY) 2 2 EXAMPLES: 8.4 ANISOTROPY AND INHOMOGENEITY Where: K = VERTICAL HYDRAULIC CONDUCTIVITY v K = HORIZONTAL HYDRAULIC CONDUCTIVITY h...
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This note was uploaded on 07/25/2008 for the course GLG 411 taught by Professor Larson during the Fall '06 term at Michigan State University.

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lecture_08 - n, S AND S y r K i Cd 2 Q KA ( h 1...

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