Results 21 to 30 of about 6,281 (245)

Failure characteristic and fracture evolution law of overburden of thick coal in fully mechanized sub-level caving mining [PDF]

, 2017
In mining process, the height of water flowing fractured zone is important significance to prevent mine of water and gas, in order to further research the failure characteristic of the overlying strata.
Fan, Cunhui, Qin, Qirong, Wang, Xiaolei
core   +2 more sources

Research on Deformation Mechanism of Retracement Channel during Fully Mechanized Caving Mining in Superhigh Seam

Advances in Civil Engineering, 2018
The multichannel retracement in the auxiliary laneway has become one of the key technologies in the high-yield and high-efficiency production of large and extra-large coal mines in western China.
L. Fei, Zhongxiao Jiang
semanticscholar   +3 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

Research on active roof control space of fully mechanized caving support based on motion posture perception [PDF]

Meitan xuebao
The fully mechanized top-coal caving support is a critical device that serves both as a support mechanism and an active means for top-coal caving in fully mechanized top-coal caving mining operations.
Qingliang ZENG, Xiaowan LEI, Zhaosheng MENG, Lirong WAN, Xinliang BAN, Yulong HU   +5 more
doaj   +3 more sources

Study on Flow Field Evolution Law of Goaf in Fully Mechanized Caving Face and Gel Air Leakage Blocking Technology under Withdrawal Condition. [PDF]

ACS Omega
During the retreat period of the fully mechanized coal mining face underground, the intensity of air leakage is high and the distribution of residual coal is widespread, which exacerbate the risk of spontaneous combustion of residual coal in the goaf ...
Xie S, Dong C, Liu X, Li L, Wang G, Hao R.   +5 more
europepmc   +2 more sources

Theory and key technologies for intelligent fully-mechanized top-coal caving faces of annual production of millions of tons [PDF]

Meitan kexue jishu
The research focused on addressing various challenges in intelligent top caving theory, intelligent perception and recognition key technology, intelligent caving comprehensive decision-making technology, and remote caving intelligent control technology ...
Bin YU, Yang TAI, Gang XU, Yong LI, Dongyin LI, Shibo WANG, Tiejun KUANG, Ercun MENG   +7 more
doaj   +3 more sources

Fracture Evolution Mechanisms and Roof Failure Assessment in Shallow-Buried Soft Coal Seams Under Fully Mechanized Caving Mining

Applied Sciences
To address the challenges in the collaborative control of strong mine pressure and surface damage during fully mechanized shallow soft coal seam top-coal caving mining, this study takes the 22,031 working face of Xindeng (Zhengzhou, China) Coal Mine as ...
Yongkang Yang, Xiaoling Fan, Guoyou Hu, Shuai Li, Konghao Zhu   +4 more
semanticscholar   +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
Hao Shi, Bingyuan Hao, Xingyun Ren, Ji Zhang   +3 more
semanticscholar   +2 more sources

Method of tail beam posture prediction of top coal caving hydraulic support based on LSTM [PDF]

Meitan kexue jishu
Fully mechanized caving is the main mining method for extra-thick coal seams in my country. The control accuracy of the caving actuator depends largely on the data feedback of the tail beam posture.
Yupeng YAO, Jinglin ZHANG, Wu XIONG
doaj   +3 more sources

Study on the Partial Paste Backfill Mining Method in a Fully Mechanized Top-Coal Caving Face: Case Study from a Coal Mine, China

Sustainability
Paste backfill mining is an significant part of green coal mining, which can improve resource utilization and extend the service life of mines. It is important for solving the “three under, one above” mining problem and avoiding industrial wastes such as
Z. Du, Deyou Chen, Xuelong Li, Y. Jian, Weizhao Zhang, Dingding Zhang, Yongfeng Tian   +6 more
semanticscholar   +3 more sources