Results 101 to 110 of about 3,856,015 (196)

Numerical Simulation Study of Support Pressure around the Fully Mechanized Caving Face

World Journal of Engineering and Technology, 2023
Peihao Li, Linchao Zhang, Pan Chi, Jinhai Gao   +3 more
openaire   +1 more source

Simulation Study of Gas Seepage in Goaf Based on Fracture–Seepage Coupling Field

Fire
In order to solve the problem of gas overrun in the fully mechanized caving face and the upper corner of high gas and extra-thick coal seam, the fracture and caving process of the roof in the goaf is analyzed and studied by using the relevant theories of
Hongsheng Wang, Huaming An, Xin Zhang
doaj   +1 more source

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
Shi, Hao, Hao, Bingyuan, Ren, Xingyun, Zhang, Ji   +3 more
openaire   +1 more source

Key technologies and demonstration of unmanned steeply inclined short-wall fully mechanized top-coal caving intelligent mining [PDF]

Since the 14th Five-Year Plan, my China’s coal mine digital intelligence technology has developed rapidly, especially in thin coal seam mining. However, the unmanned intelligent mining technology of steeply inclined short-wall fully mechanized caving is ...
Xin TIAN, Wu XIONG, Qing LIU, Kunlun LIU, Yupeng YAO, Yanyi SUN, Xinping BAO, Ruibing YAN, Haodang LI, Junfei WU, Bin GU   +10 more
core   +1 more source

Analysis of overburden structure and support working resistance of working face in fully-mechanized top coal caving with large mining height in ultra thick coal seam

矿业科学学报, 2017
In order to grasp the overburden structure and support working resistance of working face in fully-mechanized top coal caving with large mining height in ultra thick coal seam, this paper study the ultra thick coal seam in Tongxin coal mine.The fracture ...
Hou Yunbing, He Shangsen, Zhou Dianqi, Han Shuai, Zhou Yu   +4 more
doaj  

A research study of lightweight state perception algorithm based on improved YOLOv5s‐Tiny for fully mechanized top‐coal caving mining

Real‐time monitoring of the coal caving process in fully mechanized mining is crucial for achieving intelligent and efficient top‐coal caving. While the coal gangue identification method, employing vision and deep learning, has advanced in the realm of ...
PengFei Shan, Tong Yang, XiaoChen Wu, HaoQiang Sun   +3 more
core   +1 more source

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

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   +1 more source

Analysis of Ground Behavior Regularity of Fully Mechanized Face with Extra Thick Coal Seam

Gong-kuang zidonghua, 2011
The paper used methods of field strata control observation and RFPA numerical simulation to analyze and study ground behavior regularity of fully mechanized face with extra thick coal seam of easy spontaneous combustion in Gengcun Coal Mine.
REN Yong-kang, LI Bao-fu, WANG Fu-li
doaj  

Study on mechanism of air distribution volume's influence on airflow, dust migration and spray dust reduction in fully mechanized caving face. [PDF]

Sci Rep
Hongjie Z, Shaocheng G, Tian Z, Deji J, Xi C, Xingyu C.   +5 more
europepmc   +1 more source

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
Xie S, Dong C, Liu X, Li L, Wang G, Hao R.   +5 more
europepmc   +1 more source