水利行业土的工程分类探讨

Exploration of the engineering classification of soil in the water conservancy industry

我国水利行业现行的土的分类方法错综多样且复杂,使用统一的规范、标准对水利行业的土进行专门分类对指导施工实践、避免使用混乱有着重要的意义。疏理了不同水利工程类型标准中土的分类和现行《水闸设计规范》(SL 265—2016)中碎石土分类建议修正部分,简述了无明确专业术语的砂土砂砾石等分散在不同的标准中,详细述评了细粒土塑性指数分类的液限问题、三角坐标分类的黏粒含量低于6%的细分问题、塑性图分类的优缺点、黏性土少黏性土无专业术语规定及少黏性土黏粒含量上限不一的现象。阐明了水利行业土的工程分类的复杂性,提出目前水利行业土的工程分类标准修订建议。

China′s water conservancy industry existing soil classification method are intricate and complex,the use of uniform norms,standards for water conservancy industry soil specialized classification to guide the construction practice,to avoid the use of confusion is of great significance.This paper sorted out the classification of soil in different water conservancy engineering type standards,the current Design Specifications for Sluices(SL 265—2016)in the gravel soil classification is proposed to be amended,a brief description of no clear terminology of sandy soil gravel,etc.dispersed in different standards,a detailed description of the classification of fine-grained soil plasticity index of the liquid limit of the issue of triangular coordinate classification of the viscous particles of the content of less than 6%of the subdivision of the issue of the classification of the plasticity diagram of the advantages and disadvantages of classification of clayey soils and clayey soil with less viscous soils no terminology regulations and the phenomenon of varying upper limit of clay content for less viscous soils.This paper clarifies the complexity of soil engineering classification in water conservancy industry,and proposes that it is very urgent to revise the standard of soil engineering classification in water conservancy industry at present.