[Poster Presentation]带电颗粒堆积体渗透系数预测方法

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

带电颗粒堆积体渗透系数预测方法

ID：300 Submission ID：325 View Protection：ATTENDEE Updated Time：2024-05-17 13:50:01 Hits：579 Poster Presentation

Start Time：Pending （Asia/Shanghai）

Duration：Pending

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

No files

Abstract

渗透性是土壤的重要特性，在岩土工程领域相当重要。目前，针对砂土的渗透性能预测研究已十分成熟。然而，黏土颗粒由于带电，其堆积体拥有复杂的性质，渗透性能预测十分困难。传统的Kozeny-Carman ( K-C )方程因对砂土渗透率的准确预测而闻名。然而，由于双电层效应导致的结合水的存在，以及颗粒形状引起的孔隙结构差异，对于黏土，K-C方程渗透率的预测出现了严重的偏差。本研究通过讨论高岭石、蒙脱石、伊利石和二氧化硅颗粒等土样在不同介电常数液体介质中渗透率的试验结果，确定了双电层效应对黏土渗透性的影响。综合实验数据和理论分析，提出了考虑了结合水影响的适用于黏土的修正K-C方程并提供了描述结合水贡献与介质介电常数关系的定量公式。同时，通过压汞( MIP )试验对堆积体进行了孔隙分析，讨论了修正后K-C方程中迂曲度的取值。使得修正后的K-C方程对黏土渗透性有更准确的预测能力。

Keywords

黏土,渗透,双电层,带电颗粒

Speaker

叶朝晖

浙江工业大学

Submission Author

叶朝晖浙江工业大学

徐山琳浙江工业大学

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