APPROXIMATE ANALYSIS OF FALLING-HEAD LINED BOREHOLE PERMEAMETER

被引:35
作者
PHILIP, JR
机构
关键词
D O I
10.1029/93WR01688
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The falling-head lined borehole permeameter consists of a snugly fitting tube extending to the base of a vertical borehole in unsaturated soil. Water is suddenly introduced into the tube to standard depth, and the subsequent time course of water depth is observed. Soil-water data in the Amazon basin has been secured with this instrument. We develop an approximate analysis based on a Green-Ampt model, with the flow treated as a gravity-perturbed spherically symmetrical pressure-capillarity-driven flow.
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页码:3763 / 3768
页数:6
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