Application Study on Active Advanced Support Technology in Deep Roadway under Mine Goaf
Joint Authors
Zhao, Peng
Wang, Ge
Jiang, Pengfei
Meng, Fanbao
Jing, Suolin
Zhang, Jingkai
Xiao, Peng
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-11-24
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
To solve the problems of the rapid advance of the working face was delayed by complicated working procedure and high labor intensity, and the severe damage of roof bolt (anchor cable) induced by advanced hydraulic support, the deformation characteristics of surrounding rock, and the supporting principle of grouting truss anchor cable were analyzed theoretically by taking the roadway of 3_(down) coal seams 2326# working face in Sanhekou coal mine as the research object; then, the mechanical model of supporting structure of roadway under goaf was established.
Based on this model, the optimal supporting scheme was determined, and the active advanced support technology scheme of “advanced grouting truss anchor cable” was proposed to take the place of the existing single pillar.
The deformation and failure characteristics of surrounding rock of the working face leading roadway were observed and analyzed on-site.
Within the allowable range of reading error, the results showed that the maximum displacement of medium-deep base point and shallow base point of two roadways was 15.2 cm and 10.9 cm, respectively; the pressure value had a more obvious jump increase when the distance between each measuring point and the working face was about 35 m, which means the range is strongly affected by the advance mining, and the area affected by advanced mining was 35 m ahead of the working face.
It was observed that the lowest position of roof separation development ranged from 0.71 m to 2.73 m.
The separation layer was generally distributed in the range of 0.73 m-2.49 m, and the fracture area was roughly distributed in the range of 0.01 m-0.62 m.
Under the condition of overlying goaf, there was a complete stress structure, which can meet the requirements of suspension support.
American Psychological Association (APA)
Jiang, Pengfei& Xiao, Peng& Meng, Fanbao& Jing, Suolin& Zhang, Jingkai& Wang, Ge…[et al.]. 2020. Application Study on Active Advanced Support Technology in Deep Roadway under Mine Goaf. Geofluids،Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1166068
Modern Language Association (MLA)
Jiang, Pengfei…[et al.]. Application Study on Active Advanced Support Technology in Deep Roadway under Mine Goaf. Geofluids No. 2020 (2020), pp.1-13.
https://search.emarefa.net/detail/BIM-1166068
American Medical Association (AMA)
Jiang, Pengfei& Xiao, Peng& Meng, Fanbao& Jing, Suolin& Zhang, Jingkai& Wang, Ge…[et al.]. Application Study on Active Advanced Support Technology in Deep Roadway under Mine Goaf. Geofluids. 2020. Vol. 2020, no. 2020, pp.1-13.
https://search.emarefa.net/detail/BIM-1166068
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1166068