摘要
层状土释水除受水分蒸发、水位降速的影响外,还受岩层结构、岩层的组合关系及岩层厚度等因素影响。这些因素也必然影响层状土给水度的确定。笔者认为,层状土给水度既不能用单一岩性的给水度代替,也不能简单地把各层岩性的给水度值加权平均。本文通过分析层状土释水机制,结合室内外实验,提出了一种确定层状土给水度的新方法。
Besides evaporability of moisture and drop-velocity of groundwater table, such factors as structure, constitution and thickness of soil also interfere with the value of specific yield of layered soils. We consider that specific yield of layered soils is deter mined, based neither on single layer nor on weighted-average value of specific yield to every single layer. According to the studies of the mechanism of water released from saturated layered soils, a new method is suggested to determine the specific yield of layered soils, based on experiments done in laboratory.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1990年第2期196-202,共7页
Earth Science-Journal of China University of Geosciences
关键词
层状土
给水度
抽水
试验
进气值
layered soils, specific yield, entering-air value.
