Research on Key Technologies of Floor Heave Control in Soft Rock Roadway
Joint Authors
Zhang, Haidong
Shi, Lei
Wang, Peng
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-09-03
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Aiming at the floor heave of transportation concentrated roadway on the West Wing (TCRWW) of No.
1 Coal Seam in Danhou Mine, it affects underground coal transportation and mine safety production.
First, the lithology and structure of the roadway floor were sampled and tested, and it was found that it contained clay minerals with high hydrophilicity.
Secondly, starting from the mechanical mechanism of the roadway floor, a mechanical model of the roadway floor is established.
By increasing the floor anchoring layer thickness m1, the floor deformation can be effectively controlled to guarantee the stability of the surrounding rock of the roadway.
Thirdly, the FLAC3D numerical simulation analysis of the roadway deformation under the existing support scheme of the roadway is consistent with the measured deformation results on-site, thereby revealing that the existing support scheme and parameters are not reasonable.
Finally, the unreasonable support scheme and parameters of the existing roadway were disclosed, and an antifloor arch structure was proposed: “quicklime bottom paving + prestressed anchor cable + concrete arc beam + metal mesh + C20 high-strength concrete filling.” This floor treatment plan is adopted for the industrial verification of the test section of TCRWW.
Engineering practice shows that the optimized roadway support scheme has a better effect on the deformation control of the roof-to-floor and rib-to-rib, thereby effectively ensuring safe and efficient production in the mine.
American Psychological Association (APA)
Shi, Lei& Zhang, Haidong& Wang, Peng. 2020. Research on Key Technologies of Floor Heave Control in Soft Rock Roadway. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1124279
Modern Language Association (MLA)
Shi, Lei…[et al.]. Research on Key Technologies of Floor Heave Control in Soft Rock Roadway. Advances in Civil Engineering No. 2020 (2020), pp.1-13.
https://search.emarefa.net/detail/BIM-1124279
American Medical Association (AMA)
Shi, Lei& Zhang, Haidong& Wang, Peng. Research on Key Technologies of Floor Heave Control in Soft Rock Roadway. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1124279
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1124279