| 花岗岩残积土工程类型划分体系研究 |
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| 引用本文：张永波,张云,陈戈,殷密英.1997.花岗岩残积土工程类型划分体系研究[J].地球学报,18(2):200-204. |
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| 基金项目:地矿部“八五”科技攻关项目 |
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| 中文摘要:花岗岩残积土是一种特殊性土体，工程分类问题一直没有得到合理的解决。作者在充分分析现有分类方案及其存在问题的基础上，以大量的实验资料为基础，确立了以该类土体中粗砂粒（Φ＞０．５ｍｍ）百分含量为指标的工程类型划分体系，其内容是以粗砂粒含量１５％、３５％为界限值，将花岗岩残积土划分为残积粘性土、残积砂质粘性土、残积砂砾质土三类。这套分类方案和现有的分类方案相比，在分类方案选择、野外及室内可操作性、分类指标的确定以及分类界限值选择的合理性等方面具有较大的优点和特色，为正确合理地对该类土体进行工程地质问题评价奠定了基础。 |
| 中文关键词:花岗岩残积土 工程类型划分 粒度成分 |
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| The System of Engineering Category Dividing of Granite Residual Soil |
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| Abstract:Granite residual soil has its specific characteristics .Its engineering category has not been solved so far. Based on amount of laboratory data and analysis of available category scheme, the engineering category system was established according to the percentage of coarse sand grain in the soil by the author.Granite residual soil can be divided into three types with dividing line of 15%, 35% of coarse sand grain content, e.g. residual viscous soil, residual sandy viscous soil and residual gravely soil. Comparing the category scheme with available programme, it has characteristics and advantage in the field of choice of category scheme, running of indoor and field and determination of dividing line target. It lay a foundation for the correct engineering geological assessment. |
| keywords:granite residual soil engineering category granulometric composition |
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