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紫色土表土结皮发育特征的试验研究
Authors
卜崇峰
吴淑安
+4 more
程琴娟
范云涛
蔡强国
马廷
Publication date
1 January 2007
Publisher
Abstract
通过模拟降雨试验,探讨了紫色土表土结皮的发育特征。结果表明:有、无雨滴打击下,紫色土在30min内均形成稳定结皮层,厚度约7~8mm;淋移作用是紫色土形成结皮的主导作用,降雨打击使表土在降雨前期迅速形成致密薄层,抑制了淋移作用并使盖网处理的结皮容重略高;孔隙的剖面分布对入渗、抗剪强度有较大影响,表现在发生层总孔隙度低但分布均匀的盖网处理具有更强的入渗能力,且由于降雨初期未发生致密上层使其抗剪强度略低
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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oai:ir.iswc.ac.cn/:361005/1459
Last time updated on 21/09/2018
Institutional Repository of Institute of Geographic Sciences and Natural Resources Research, CAS
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Last time updated on 29/11/2016