Parametric modeling study for blown-dust secondary pollution and optimal ventilation velocity during tunnel construction.
Blown dust pollution rate
Dust critical flow
Mechanical ventilation
Optimal ventilation velocity
Underground tunnel construction
Journal
Environmental pollution (Barking, Essex : 1987)
ISSN: 1873-6424
Titre abrégé: Environ Pollut
Pays: England
ID NLM: 8804476
Informations de publication
Date de publication:
15 Oct 2023
15 Oct 2023
Historique:
received:
17
04
2023
revised:
23
06
2023
accepted:
20
07
2023
medline:
18
9
2023
pubmed:
24
7
2023
entrez:
23
7
2023
Statut:
ppublish
Résumé
Tunnel construction often relies on drilling and blasting. High dust pollution is one of the primary problems of drilling and blasting construction. The level of secondary blown dust pollution caused by ventilation matches that of dust pollution caused by drilling construction. In this study, a critical flow model and blown dust rate model for deposited dust were established via force analysis, which was validated against the test data. The research results showed that the characteristic airflow velocity for blowing dust particles with a 100 μm diameter reached approximately 0.42 m/s for tunnel diameter is 10 m, and the ventilation Re values under smooth and rough conditions were 2.3 × 10
Identifiants
pubmed: 37482333
pii: S0269-7491(23)01241-1
doi: 10.1016/j.envpol.2023.122239
pii:
doi:
Substances chimiques
Dust
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
122239Informations de copyright
Copyright © 2023 Elsevier Ltd. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.