基于离散元的深海集矿车履带土体动态作用机理

doi:10.6040/j.issn.1672-3961.0.2022.352

山东大学学报 (工学版) ›› 2024, Vol. 54 ›› Issue (2): 153-162.doi: 10.6040/j.issn.1672-3961.0.2022.352

• 土木工程 • 上一篇

基于离散元的深海集矿车履带土体动态作用机理

刘钦¹,刘磊¹,张宁^2*,赵红宇¹,王哲¹,黄坤鹏¹

1.长安大学建筑工程学院, 陕西西安 710061;2.华北电力大学水利与水电工程学院, 北京 102206

发布日期:2024-04-17
作者简介:刘钦(1983— ),男,陕西山阳人,博士,副教授,主要研究方向为岩土与地下工程. E-mail:lq0719@163.com. *通信作者简介:张宁(1983— ),男,河南商丘人,副教授,硕士生导师,博士,主要研究方向为海洋岩土. E-mail:zning1125@ncepu.edu.cn
基金资助:
国家自然科学基金资助项目(U1906234)

Dynamic mechanism of tracked soil of deep-sea mining vehicle based on discrete element method

LIU Qin¹, LIU Lei¹, ZHANG Ning^2*, ZHAO Hongyu¹, WANG Zhe¹, HUANG Kunpeng¹

1. School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China;
2. School of Water Conservancy and Hydropower Engineering, North China Electric Power University, Beijing 102206, China

Published:2024-04-17

摘要/Abstract

摘要： 针对深海集矿车在软底质土上行驶困难的问题,配制模拟底质土进行直剪试验,通过离散元土体模拟压陷与剪切试验,验证离散元模拟底质土的可靠性。在此基础上构建履带-土体相互作用系统,在重心偏移下,分析集矿车履带接地长宽比和支重轮数对接地压力和土体沉降的影响。结果表明,随履带接地长宽比增大,偏心效应越显著,履带初始接地压力分布不均匀,履带整体沉降增大,但对履带梯形不均匀沉降形式无明显影响。支重轮数n≤3时,增加支重轮数可适当减小偏心效应,履带初始接地压力不均匀分布明显,履带整体沉降降低;n>3时,支重轮数变化对偏心效应影响较小,履带初始接地压力分布逐渐均匀,但对履带整体沉降无明显影响。不同履带接地长宽比与支重轮数的土体压陷关系近似符合Bekker压陷公式。

关键词: 深海履带式集矿车, 履带接地压力, 土体沉降, 压力沉降关系, Bekker压陷模型

中图分类号:

P751

刘钦,刘磊,张宁,赵红宇,王哲,黄坤鹏. 基于离散元的深海集矿车履带土体动态作用机理[J]. 山东大学学报 (工学版), 2024, 54(2): 153-162.

LIU Qin, LIU Lei, ZHANG Ning, ZHAO Hongyu, WANG Zhe, HUANG Kunpeng. Dynamic mechanism of tracked soil of deep-sea mining vehicle based on discrete element method[J]. Journal of Shandong University(Engineering Science), 2024, 54(2): 153-162.

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基于离散元的深海集矿车履带土体动态作用机理

Dynamic mechanism of tracked soil of deep-sea mining vehicle based on discrete element method

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