程升, 单红仙, 朱超祁, 王振豪, 焦欣然, 刘晓磊, 贾永刚. 2018: 颗粒离散元在岩土体细观特性及边坡变形中的研究应用. 工程地质学报, 26(s1): 547-553. DOI: 10.13544/j.cnki.jeg.2018083
    引用本文: 程升, 单红仙, 朱超祁, 王振豪, 焦欣然, 刘晓磊, 贾永刚. 2018: 颗粒离散元在岩土体细观特性及边坡变形中的研究应用. 工程地质学报, 26(s1): 547-553. DOI: 10.13544/j.cnki.jeg.2018083
    CHENG Sheng, SHAN Hongxian, ZHU Chaoqi, WANG Zhenhao, JIAO Xinran, LIU Xiaolei, JIA Yonggang. 2018: THE RESEARCH AND APPLICATION OF PARTICLE DISCRETE ELEMENT MODELLING IN ROCK AND SOIL MESOSCOPIC CHARACTERISTICS AND SLOPE DEFORMATION. JOURNAL OF ENGINEERING GEOLOGY, 26(s1): 547-553. DOI: 10.13544/j.cnki.jeg.2018083
    Citation: CHENG Sheng, SHAN Hongxian, ZHU Chaoqi, WANG Zhenhao, JIAO Xinran, LIU Xiaolei, JIA Yonggang. 2018: THE RESEARCH AND APPLICATION OF PARTICLE DISCRETE ELEMENT MODELLING IN ROCK AND SOIL MESOSCOPIC CHARACTERISTICS AND SLOPE DEFORMATION. JOURNAL OF ENGINEERING GEOLOGY, 26(s1): 547-553. DOI: 10.13544/j.cnki.jeg.2018083

    颗粒离散元在岩土体细观特性及边坡变形中的研究应用

    THE RESEARCH AND APPLICATION OF PARTICLE DISCRETE ELEMENT MODELLING IN ROCK AND SOIL MESOSCOPIC CHARACTERISTICS AND SLOPE DEFORMATION

    • 摘要: 离散元法作为研究散体材料特性的一种工具,应用面很广,优势明显。本文简要介绍颗粒离散元的基本原理,概述细观参数校准的过程,探讨了对砂土、黏性土、节理岩体以及天然气水合物的细观特性研究应用及进展,同时讨论了颗粒离散元在边坡变形中的研究应用。进行岩土体颗粒离散元模拟时,不同细观参数对宏观参数有一定的影响但没有确定的线性关系。颗粒离散元在研究多相固体介质细观特性方面具有优势,能够赋予材料多种接触模型和细观参数。因此对水合物的研究会促进颗粒离散元算法的改进和对含水合物沉积物特性的深入研究。通过将颗粒离散元与其它方法耦合取长补短,对复杂的工程地质问题的研究将会迎刃而解。并且本文对颗粒离散元在海洋工程地质领域的进一步应用做了展望。

       

      Abstract: As a tool for studying the characteristics of bulk materials, granular discrete element method is widely used and has obvious advantages. This paper briefly introduces the basic principle of particle discrete element, an overview of the mesoscopic parameters calibration process, discusses the sandy soil and clayey soil, joint rock and the characteristics of natural gas hydrate, the research application and progress, and discussed the granular discrete element applied in study of slope deformation. When the discrete element simulation of rock and soil particles is carried out, the different parameters have certain influence on the macro parameters but there is no definite linear relation. Particle discrete element has the advantage in studying the mesoscopic properties of multiphase solid media, and can endow the material with various contact models and microscopic parameters. Therefore, the study of hydrate will promote the improvement of granular discrete element algorithm and further study on the characteristics of hydrate sediment. By coupling the particle discrete element with other methods, the research on complex engineering geological problems will be solved. In this paper, the further application of granular flow discrete element in Marine geotechnical engineering is prospected.

       

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