THERMAL SCIENCE

International Scientific Journal

Shiyang Liu

,

Xuefu Zhang

,

Feng Gao

,

Yun Yu Li

,

Saeed Hameed Kurdi Al Dulaimi

PARAMETER OPTIMIZATION OF ANTI-CRYSTALLIZATION FLOCKING DRAINAGE PIPE BASED ON MACRO FORCE AND DISPLACEMENT CHARACTERISTICS OF VILLUS

ABSTRACT
The crystal blockage of tunnel drainage pipe seriously affects the smoothness of the whole drainage system. Therefore, it is very important to effectively prevent crystal plugging in tunnel drainage system to ensure the safety and stability of lining structure during tunnel operation. Based on the macro force and displacement characteristics of villus, the optimization of villus diameter and villus length of flocked drainage pipe at low flow rate was studied by numerical simulation. The results show that: there is a difference of 1-2 orders of magnitude between the 3-D displacements of the bottom villus and one order of magnitude between the 3-D displacements of the side villus of the flocked drainage pipe; with the increase of villus length, the 3-D displacement of villus increased parabola and with the increase of villus diameter, the 3-D displacement of villus decreased gradually; the results show that the first and third principal stresses of the bottom villus increase linearly with the increase of villus length, while the first and third principal stresses of the side villus increase parabola with the increase of villus length; when the flow rate is 2 cm/s, the diameter of villus is 0.6 mm and the length of villus is 20 mm. Flocking drainage pipe anti crystal plugging technology fills the blank of tunnel drainage pipe anti crystal plugging research. This technology can reduce the maintenance cost of tunnel drainage system during operation, and ensure the safe and normal operation of the tunnel.
KEYWORDS
tunnel, crystal plugging, flocking drainage pipe, Villus, principal stress, 3-D displacement
PAPER SUBMITTED: 2021-03-05
PAPER REVISED: 2021-06-12
PAPER ACCEPTED: 2021-07-07
PUBLISHED ONLINE: 2021-10-17
DOI REFERENCE: https://doi.org/10.2298/TSCI2106127L
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 6, PAGES [4127 - 4135]
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Parameter optimization of anti-crystallization flocking drainage pipe based on macro force and displacement characteristics of villus

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence