Surrounding Rock Deformation Mechanism and Control Technology for Gob-Side Entry Retaining with Fully Mechanized Gangue Backfilling Mining: A Case Study
Joint Authors
Zhang, Ray R.
Ma, Zhanguo
Gong, Peng
Ni, Xiaoyan
Liu, Fei
Huang, Zhimin
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-05-14
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
To counter the technical difficulties faced by gob-side entry retaining (GER) under multiple complex mining geological conditions in China, this paper introduces a GER method with fully mechanized gangue backfilling mining.
A similar materials simulation experiment was conducted to simulate the gob-backfilled GER process by using the similar model test system containing an independently developed horizontal pushing load device.
The experimental results show that the compaction speed of the backfilling area (BFA) can be improved, and the main roof subsidence can be reduced by increasing the horizontal pushing load and reducing the attenuation rate of the stress in BFA.
The designed roadside backfill body (RBB) containing a flexible cushion is adaptive to the given deformation of the main roof, thus reducing the stress concentration of the RBB.
The field test results show that when a 2 MPa horizontal pushing load is exerted in the BFA, arranging a 200 mm high-water-material flexible cushion can cause the BFA to swiftly change to the compaction stage.
After stabilized deformation, the roadway section satisfies the design and application requirements.
The feasibility and rationality of the GER with the fully mechanized gangue backfilling mining are proved, providing a safe, efficient, and environmentally friendly mining method without using a coal pillar.
American Psychological Association (APA)
Gong, Peng& Ma, Zhanguo& Zhang, Ray R.& Ni, Xiaoyan& Liu, Fei& Huang, Zhimin. 2017. Surrounding Rock Deformation Mechanism and Control Technology for Gob-Side Entry Retaining with Fully Mechanized Gangue Backfilling Mining: A Case Study. Shock and Vibration،Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1204767
Modern Language Association (MLA)
Gong, Peng…[et al.]. Surrounding Rock Deformation Mechanism and Control Technology for Gob-Side Entry Retaining with Fully Mechanized Gangue Backfilling Mining: A Case Study. Shock and Vibration No. 2017 (2017), pp.1-15.
https://search.emarefa.net/detail/BIM-1204767
American Medical Association (AMA)
Gong, Peng& Ma, Zhanguo& Zhang, Ray R.& Ni, Xiaoyan& Liu, Fei& Huang, Zhimin. Surrounding Rock Deformation Mechanism and Control Technology for Gob-Side Entry Retaining with Fully Mechanized Gangue Backfilling Mining: A Case Study. Shock and Vibration. 2017. Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1204767
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1204767