Results 21 to 30 of about 5,124 (199)

Overlying rock movement and mining pressure in a fully mechanized caving face with a large dip angle

Frontiers in Earth Science, 2022
The overlying rock movement and mining pressure in the fully mechanized caving face with a large dip angle were systematically investigated according to theoretical analysis, similar material simulation, numerical calculation, and field monitoring.
Ying Chen, Ying Chen, Zhiwen Wang, Qianjia Hui, Zhijie Zhu, Dequan Sun, Dequan Sun, Yang Chen, Xiufeng Zhang, Zhaoyi Wang, Jian Wang, Jian Zhao   +11 more
openaire   +3 more sources

Mechanism and Application of Static Stress Intervention for Controlled Directional Roof Caving in Fully Mechanized Mining Faces

Processes
To address roof overhang hazards (e.g., rock bursts and gas accumulation) in high-gas coal mines, this study proposes a static stress intervention method for controlled directional roof collapse. Using the 150110 fully mechanized face at Yiyuan Coal Mine as a case study, we investigate the mechanical mechanism of static stress intervention-induced roof
Hao Shi, Bingyuan Hao, Xingyun Ren, Ji Zhang   +3 more
openaire   +2 more sources

The Influences of Key Strata Compound Breakage on the Overlying Strata Movement and Strata Pressure Behavior in Fully Mechanized Caving Mining of Shallow and Extremely Thick Seams: A Case Study

Advances in Civil Engineering, 2019
In order to analyze the impact of compound breakage of key strata on overlying strata movement and strata pressure behavior during the fully mechanized caving mining in shallow and extremely thick seams, this paper took the 1322 fully mechanized caving ...
Junmeng Li, Yanli Huang, Jixiong Zhang, Meng Li, Ming Qiao, Fengwan Wang   +5 more
doaj   +2 more sources

Automatic control system of top coal caving on fully-mechanized coal mining face

Gong-kuang zidonghua, 2015
In view of problems of large randomness, low efficiency of coal caving of artificial operation for top coal caving mining face, an automatic control system of top coal caving on fully-mechanized coal mining face was designed.
WEI Wenya
doaj   +2 more sources

Research on the Distribution Law of Air Flow and Dust in Multi‐Process Operations of Coal Mine Fully Mechanized Caving Face

Energy Science &Engineering, Volume 13, Issue 11, Page 5247-5267, November 2025.
ABSTRACT The aim of this study is to examine the intricate dynamics involved in the production, movement, and settling of dust particles, as well as the interconnected mechanisms at play during various processes within fully automated coal mining fronts.
Yibo Li, Xiangjun Chen, Yunfei Du, Lin Li, Peiqi Zuo, Mengke Liu   +5 more
wiley   +2 more sources

Effects of caving–mining ratio on the coal and waste rocks gangue flows and the amount of cyclically caved coal in fully mechanized mining of super-thick coal seams

International Journal of Mining Science and Technology, 2015
Aimed at determining the appropriate caving–mining ratio for fully mechanized mining of 20 m thick coal seam, this research investigated the effects of caving–mining ratio on the flow fields of coal and waste rocks, amount of cyclically caved coal and ...
Ningbo Zhang, Changyou Liu, Mengsong Pei
doaj   +3 more sources

Numerical and in-situ investigation on the ground behavior of the end roof in fully mechanized caving face [PDF]

E3S Web of Conferences, 2021
Fully mechanized top coal caving is a major high-yield and high-efficiency coal mining method for thick seam mining. At present, it is affected by the further popularization and application of fully mechanized caving mining because the recovery rate is ...
Zang Chuanwei, Chen Miao, Chen Yang, Zhuang Xuean, Zhai Chenming, Zhu Hongmo   +5 more
doaj   +1 more source

Research on overburden structural characteristics and support adaptability in cooperative mining of sectional coal pillar and bottom coal seam [PDF]

Scientific Reports
In the mining process of the II1 coal seam at Zhaogu No. 2 coal mine, a method of stratified mining is employed, leaving relatively wide coal pillars in sections.
Du Feng, Fan Xuan, Li Zhenhua, Cao Zhengzheng, Wang Wenqiang, Lu Feifei, Jiang Yufei   +6 more
doaj   +2 more sources

Effect of Face Length in Initial Mining Stage of Fully Mechanized Top-coal Caving Face With Large Mining Height [PDF]

Geotechnical and Geological Engineering, 2021
Abstract Based on the field measurement of the end resistance of the support during the initial weighting of the basic roof and the macroscopic mine pressure behavior during the weighting period of 101,22211,103 and 301 fully mechanized caving face in Changchun Xing Coal Mine, the mine pressure law of the working face is summarized and compared,
Jianhang Wang, Yao Lu, Changxiang Wang, Guangwei Xu, Chengran Zhang   +4 more
openaire   +1 more source

A multifactor coupling prediction model for the failure depth of floor rocks in fully mechanized caving mining: a numerical and in situ study. [PDF]

R Soc Open Sci, 2019
To study the mining-induced failure depth of floor rocks in a fully mechanized mining caving field affected by different coal seam pitches, mining face lengths, burial depths and aquifer water pressures, multifactor-coupled orthogonal numerical tests on ...
Jiang Y, Cai T, Zhang X.
europepmc   +2 more sources