Hydraulic calculation of gravity transportation pipeline system for backfill slurry

Taking cemented coal gangue pipeline transportation system in Suncun Coal Mine, Xinwen Mining Group, Shandong Province, China, as an example, the hydraulic calculation approaches and process about gravity pipeline transportation of backfill slurry were investigated. The results show that the backfil...

Full description

Saved in:
Bibliographic Details
Published inJournal of Central South University of Technology. Science & technology of mining and metallurgy Vol. 15; no. 5; pp. 645 - 649
Main Authors Zhang, Qin-li, Hu, Guan-yu, Wang, Xin-min
Format Journal Article
LanguageEnglish
Published Changsha Central South University 01.10.2008
Subjects
Engineering
Metallic Materials
backfill capability
critical velocity
hydraulic calculation
pipe length-backfill depth ratio
working velocity
Online AccessGet full text

Cover

More Information
Summary:Taking cemented coal gangue pipeline transportation system in Suncun Coal Mine, Xinwen Mining Group, Shandong Province, China, as an example, the hydraulic calculation approaches and process about gravity pipeline transportation of backfill slurry were investigated. The results show that the backfill capability of the backfill system should be higher than 74.4 m 3 /h according to the mining production and backfill times in the mine; the minimum velocity (critical velocity) and practical working velocity of the backfill slurry are 1.44 and 3.82 m/s, respectively. Various formulae give the maximum ratio of total length to vertical height of pipeline ( L/H ratio) of the backfill system of 5.4, and then the reliability and capability of the system can be evaluated.
ISSN:1005-9784
1993-0666
DOI:10.1007/s11771-008-0120-x