Optimisation of soil-agent particle distribution in a new chain plate soil remediation device based on discrete element method

IF 2.4 3区工程技术

Granular Matter Pub Date : 2024-12-04 DOI:10.1007/s10035-024-01483-7

Zhipeng Wang, Tong Zhu, Youzhao Wang, Dezheng Liu, Feng Ma, Chaoyue Zhao, Xu Li, Yanping Zhang

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Abstract

To improve the working efficiency of in-situ soil remediation equipment, this paper designs a new type of chain plate soil remediation equipment based on the working principle and technical requirements. The mixing process of soil and chemicals under different parameters was investigated using the discrete element method and the orthogonal test method. The experimental designs were all based on horizontal movement speed, chain knife speed, screw speed, and homogeneous mixing pitch as test factors and discrete coefficient and soil fragmentation rate as indices. The test method uses a unidirectional test to determine the value of the reference centre level for the orthogonal test and a combined balancing method to determine and validate the optimum parameters of the soil remediation device. The optimised parameters were determined as follows: the horizontal movement speed of the mechanism is 0.15 m/s, the rotational speed of the chain knife is 5.25 m/s, the rotational speed of the screw is 187.5 rpm, and the homogeneous mixing pitch is 98 mm, respectively. The dispersion coefficient was reduced by 7.43% and the soil fragmentation rate increased by 5.45% compared to the operating parameters of the baseline group.

Graphical abstract

Abstract Image

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基于离散元法的新型链板土壤修复装置中土壤剂颗粒分布优化

为提高原位土壤修复设备的工作效率，本文根据其工作原理和技术要求，设计了一种新型链板土壤修复设备。采用离散元法和正交试验法研究了不同参数下土壤与药剂的混合过程。试验设计均以水平移动速度、链刀速度、螺杆速度和均匀混合间距为试验因素，以离散系数和土壤破碎率为指标。试验方法采用单向试验确定参考中心水平值进行正交试验，采用组合平衡法确定并验证土壤修复装置的最佳参数。优化后的参数确定为：机构水平运动速度为0.15 m/s，链刀转速为5.25 m/s，螺杆转速为187.5 rpm，均匀混合节距为98 mm。与基线组相比，分散系数降低了7.43%，土壤破碎化率增加了5.45%。图形抽象

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来源期刊

Granular Matter MATERIALS SCIENCE, MULTIDISCIPLINARY-MECHANICS

CiteScore

4.30

自引率

8.30%

发文量

期刊介绍： Although many phenomena observed in granular materials are still not yet fully understood, important contributions have been made to further our understanding using modern tools from statistical mechanics, micro-mechanics, and computational science. These modern tools apply to disordered systems, phase transitions, instabilities or intermittent behavior and the performance of discrete particle simulations. >> Until now, however, many of these results were only to be found scattered throughout the literature. Physicists are often unaware of the theories and results published by engineers or other fields - and vice versa. The journal Granular Matter thus serves as an interdisciplinary platform of communication among researchers of various disciplines who are involved in the basic research on granular media. It helps to establish a common language and gather articles under one single roof that up to now have been spread over many journals in a variety of fields. Notwithstanding, highly applied or technical work is beyond the scope of this journal.