| 孔令伟,吕海波,王稔,单华刚.湛江海域结构性海洋土的工程特性及其微观机制[J].水利学报,2002,33(9): |
| 湛江海域结构性海洋土的工程特性及其微观机制 |
| Engineering properties and micro-mechanism of structural marine soil in Zhanjiang sea area |
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| DOI： |
| 中文关键词: 海洋土 土的结构性 淤泥 工程特性 微观结构 |
| 英文关键词: marine soil soil structure muck engineering properties micro-structure |
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| 中文摘要: |
| 对琼州海峡湛江海域的一种海洋土的基本性质进行了系统的试验研究。该海洋土的物理性质较差，按土质分类属于淤泥，但其压缩变形特征与强度指标有别于一般性淤泥或淤泥质土，表观先期固结压力pc值为100～125kPa，无侧限抗压强度qu达50kPa左右，灵敏度大于12，抗剪强度也相对较高，具有一定的结构强度，是一种结构性软土。初步从矿物组成、物理化学性质、胶结特性与孔隙结构特征几方面分析了其特殊工程性质的微观机制，揭示了其影响爆炸挤淤施工的机理。 |
| 英文摘要: |
| The fundamental properties of the structural marine soil in Zhanjiang sea area are studied experimentally. The soil has poor properties and belongs to muck according to the soil classification system, but its compressive deformation characteristics and strength parameters are different from that of muck or muck soil. The pre-consolidation pressure determined by the Cassagrande method is about 100-125kPa,the corresponding unconfined compressive strength reaches 50kPa and sensitivity is more than 12.Moreover,the shear strength is also relatively high. Therefore, this soil is a kind of extra sensitive clay with certain structural strength. The micro-mechanisms of special engineering properties, including mineral composition, physicochemical properties, colloidal behavior are analyzed and their effects on underwater explosion are illustrated. |
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