测量的土壤-水特性曲线的变化与标本数量有关
Hao Wang1, Zhiwei Gao1, RuChen Ma2
1College of information engineering, Xizang Minzu University, Xianyang, China.
Scientific reports
|August 9, 2024
概括
确定土壤水特性曲线 (SWCC) 需要仔细考虑样本数量. 这项研究发现,对于工程土壤,一个样本就足够了,而对于残留土壤,至少需要两个样本才能准确地确定SWCC.
科学领域:
- 地质技术工程 地质技术工程
- 土壤力学 土壤力学
- 环境科学 环境科学
背景情况:
- 土壤水特性曲线 (SWCC) 对于不和土壤机理至关重要,它将土壤水含量与土壤吸收联系起来.
- 精确的SWCC测定对于估计液压导电性和剪切强度功能至关重要.
- SWCC测量是昂贵和耗时的,需要优化样品要求.
研究的目的:
- 为了确定准确的SWCC确定所需的最低数量的土壤样本.
- 为了比较工程土壤和残留土壤之间的SWCC变化.
- 为SWCC测试协议提供实际指导.
主要方法:
- 土壤样本是使用工程砂-高混合物和来自新加坡Bukit Timah形成的残余土壤准备的.
- 在准备好的土壤样本上进行了SWCC测量.
- 数据分析的重点是获得的SWCC的一致性和分散性.
主要成果:
- 来自工程土壤样本的SWCC显示出高的一致性.
- 来自残留土壤样本的SWCC显示出轻微的分散.
- 对于工程土壤,一个样本就足够了,而对于残留土壤,至少需要两个样本.
结论:
- 对于SWCC测试所需的标本数量因土壤类型而异.
- 工程土壤需要比残留土壤更少的样本来进行可靠的SWCC确定.
- 优化样本数量可以平衡SWCC测试中的准确性和实验成本.
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