Application of Gob-Side Entry Driving in Fully Mechanized Caving Mining: A Review of Theory and Technology

Dongdong Chen, Jingkun Zhu, Qiucheng Ye, Xiang Ma, Shengrong Xie (), Wenke Guo, Zijian Li, Zhiqiang Wang, Shaohua Feng and Xiangxiang Yan
Additional contact information
Dongdong Chen: School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
Jingkun Zhu: School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
Qiucheng Ye: School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
Xiang Ma: School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
Shengrong Xie: School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
Wenke Guo: School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
Zijian Li: School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
Zhiqiang Wang: School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
Shaohua Feng: School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
Xiangxiang Yan: School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China

Energies, 2023, vol. 16, issue 6, 1-26

Abstract: China has abundant coal resources, and the distribution of coal seams is complex. Thick coal seams account for more than 45% of all coal seams. Fully mechanized top coal caving mining has the advantages of large production, high efficiency, and low cost. In fully mechanized caving mining, especially in fully mechanized caving mining of extra-thick coal seams, the mining space is ample, the mine pressure is severe, and the roadway maintenance is complex. As a result, it is necessary to summarize and discuss the gob-side entry driving of fully mechanized caving in theory and technology, which will help to promote the further development of fully mechanized caving gob-side entry driving technology. First, in recent years, the research hotspots of gob-side entry driving have focused on the deformation mechanism and the control method of the roadway surrounding rock. Secondly, this paper discusses the theoretical models of the “triangle-block” and “beam” for the activity law of the overlying strata in gob-side entry driving, including the lateral breaking “large structure” model, compound key triangle block structure model in the middle and low position, the high and low right angle key block stability mechanics model, elastic foundation beam model, low-level combined cantilever beam + high-level multilayer masonry beam structure model, and the vertical triangular slip zone structure model. It introduces the “internal and external stress field theory” and the “stress limit equilibrium zone model”. Thirdly, it summarizes several numerical simulation analysis methods in different conditions or research focuses and selects appropriate constitutive models and simulation software. Finally, it introduces surrounding rock control technology, including two ribs, the roof, and under challenging conditions. It provides a method reference for support in similar projects.

Keywords: fully mechanized top coal caving mining; gob-side entry driving; triangle-block structure; beam structure; cable truss; support (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/16/6/2691/pdf (application/pdf)
https://www.mdpi.com/1996-1073/16/6/2691/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:16:y:2023:i:6:p:2691-:d:1096288

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().