[Oral Presentation]基于地层孔隙形貌的泥浆渗透成膜过程CFD-DEM仿真研究

Organized By

Hohai University

Monash University

Co-organized by

Southeast University

Jiangxi University of Science and Technology

Northeast University

DUT-BSU Scientific Research and Innovation Center

Suzhou University of Science and Technology

State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment

Sponsoring agency

KELI SDEM Software (Dalian) Co., Ltd.

Sugon Smart Computing Information Technology Co., Ltd.

Beijing Paratera Technology Co., Ltd.

Simpop Information Technology Co., Ltd.

Important Dates

Conference Announcement

December 2023, release First Round Announcement
Abstract Submission Deadline
March 31^th, 2024
Paper Submission Deadline
April 30^th, 2024
Registration
From January 1^st, 2024
Conference Schedule
May 31^st (Friday), 2024 On-Site Registration
June 1^st to 3^rd, 2024 Conference

基于地层孔隙形貌的泥浆渗透成膜过程CFD-DEM仿真研究

ID：160 Submission ID：134 View Protection：ATTENDEE Updated Time：2024-04-10 17:21:41 Hits：586 Oral Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

Session：[No Session] » [No Session Block]

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Abstract

了解泥浆渗透的成膜过程对于评估泥水平衡盾构开挖面稳定性起着至关重要的作用。尽管针对泥浆渗透已经有大量的试验研究，也提出了一些理论模型来描述泥浆渗透过程，但基于现有研究中的假定，对于泥浆颗粒的分布、泥膜的厚度和渗透路径等仍然缺乏直观的证据支持。本研究结合CT扫描技术和CFD-DEM数值模拟方法，研究了砂柱渗透柱试验的泥浆渗透特性。首先，在设计的微型渗透柱中进行了一系列泥浆渗透试验。在渗透完成后，使用YXLON FF85计算机断层扫描检测系统对于选定的砂柱进行CT扫描，并通过图像处理技术提取泥浆颗粒和地层孔隙信息。基于此通过开源软件CFDEM在考虑孔隙形貌特征的条件下进行CFD-DEM模拟，对比了试验和模拟中的泥膜形态和泥浆颗粒分布特征。

Keywords

泥浆渗透,CT扫描,CFD-DEM模拟方法,孔隙形貌

Speaker

袁昊祯

同济大学

Submission Author

袁昊祯同济大学

黄昕同济大学

Sponsored By

Hohai University

Panel of Computational Mechanics on Granular Materials, Working Party of Computational Mechanics, Chinese Society of Theoretical and Applied Mechanics

Jiangsu Society of Theoretical and Applied Mechanics