Transient Functions for Land Drainage

by S. Abdollah Jenab,
A. Alvin Bishop,
Dean F. Peterson, Jr.,


Serial Information: Journal of the Irrigation and Drainage Division, 1969, Vol. 95, Issue 3, Pg. 361-374


Document Type: Journal Paper

Abstract:

Solution of the diffusion equation for a line sink in a plane yields the error function, erfc. By superposition and integration functions, D(u_n) and q(u_n) which describe the transient position and rate of fall of a water table under artificial drainage for multiple drains and the transient discharge of the drains, are developed. These may be used to determine in situ vaules of transmiss ivity and storage coefficient as well as for drainage design. A means of using the method for any initial water table position is presented and some design examples are given.

Subject Headings: Transient response | Drainage | Water discharge | Water table | Diffusion | Errors (statistics) | Field tests | Hydraulic design

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