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工程堆积体坡面砾石分布及含量概化
Authors
戎玉博
王森
+4 more
王海燕
谢永生
赵暄
骆汉
Publication date
1 October 2017
Publisher
'UPV/EHU Press'
Doi
Cite
Abstract
为室内试验中更好地模拟工程堆积体,利用图像分析法和经典统计学方法对六大典型水蚀区的368座工程堆积体中粒径D>1 cm的坡面砾石的分布和含量进行概化分析,得到工程堆积体下垫面上中下坡位砾石含量的概化区间。结果表明:工程堆积体坡面各粒径砾石含量大多服从正态分布,且山区和平原丘陵区之间的砾石总含量有显著性差异。工程堆积体坡面砾石重力分选作用明显,且随着砾石粒径的增加,分选程度增大。在室内进行工程堆积体下垫面设计时,山区堆积体的砾石总含量宜设置在50%~60%之间,其中,细粒砾石含量宜设置在20%~30%之间,中粒砾石含量宜设置在10%~15%之间,粗粒砾石和巨粒砾石含量宜设置为10%,堆积体上中下坡位坡面砾石含量配比宜设置为1∶1.3∶1.5;平原丘陵区的砾石总含量宜设置在15%~20%之间,其中细粒砾石、中粒砾石、粗粒砾石、巨粒砾石含量分别宜设置在5%~10%、3%~7%、2%~5%、2%~3%之间,堆积体上中下坡位坡面砾石含量配比宜设置为1∶1.5∶2.5。</p
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018