土工基础

土工基础 ›› 2020, Vol. 34 ›› Issue (1): 41-44.

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珊瑚钙质砂颗粒形貌研究进展

王步雪岩1，2，孟庆山2，张珀瑜1，2   

  1. （1.桂林理工大学 土木与建筑工程学院，广西桂林 541004；
    2.中国科学院武汉岩土力学研究所 岩土力学与工程国家重点实验室，武汉 430071）
  • 收稿日期:2019-04-08 修回日期:2019-04-26 出版日期:2020-04-20 发布日期:2020-04-20
  • 作者简介:王步雪岩（1994-），男，在读研究生，研究方向为钙质砂等海洋岩土工程。

Research Progress in Particle Morphology of Calcareous Coral Sand

WANG Buxueyan1,2, MENG Qingshan2, ZHANG Poyv1,2   

  1. (1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071;
    2.College of Civil Engineering and Architecture, Guilin University of Technology, Guilin 541004)
  • Received:2019-04-08 Revised:2019-04-26 Online:2020-04-20 Published:2020-04-20

摘要： 与由岩石风化形成的陆源砂土不同，钙质土由海洋中的生物遗骸经过长期的风化作用形成，保留了生物遗骸的部分结构与组分特征，如：碳酸钙含量>50%；形状不规则；易破碎；颗粒易胶结、高内摩擦角、高孔隙比、粒间咬合力大等。其在工程力学性质上不同于一般的陆相、海相沉积物的原因，无非是组分和形貌，针对颗粒形貌方面的研究进行分析，提出了亟待解决的问题。

关键词: 钙质砂, 颗粒形貌

Abstract: Unlike the common land originated quartz sandy soils formed by the weathering rock, the calcareous sand is formed by a long period of weathering of biological remains in the marine environment. Due to the uniqueness of its formation process, the calcareous sand retains some of the structure and component characteristics of biological remains, such as, calcium carbonate content>50%; irregular shape;easy to break; easy cementation of particles, high internal friction angle, high porosity ratio, large intergranular occlusion force, etc. The reason why it is different from the general continental and marine sedimentary objects in engineering mechanical properties is the two aspects; such as, composition and morphology. In this paper, the study of the particle morphology is also presented.

Key words: Calcareous Sand, ParticleShape

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