Results 101 to 110 of about 5,124 (199)

Effect of roof movement on gas flow in an extremely thick coal seam under fully mechanized sublevel caving mining conditions

Energy Science & Engineering, 2019
The abnormal emission of gas in coals is the main factor that induces serious gas disasters in coal mines. During the coal mining process, roof movement has important effects on the gas emission law and gas flow characteristics.
Haijun Guo, Xianzhang Li, H. Cui, Kai Chen, Yuanyuan Zhang   +4 more
semanticscholar   +1 more source

Research and exploration of longwall fully mechanized mining in steeply dipping coal seams

Meitan kexue jishu
To address the challenges of safe and efficient mining in steeply dipping coal seams in China and support the intelligent transformation of the coal industry, this article focuses on fully mechanized longwall mining technology for such seams.
Yongping WU, Panshi XIE, Dongfeng YUN, Hongwei WANG, Xicai GAO, Wenyu LYU, Shenghu LUO, Ding LANG, Bosheng HU, Hao ZHANG, Yingyi ZHANG   +10 more
doaj   +1 more source

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

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   +1 more source

Key technologies and practices for safe, efficient, and intelligent mining of deep coal resources

Meitan kexue jishu
The geological conditions of deep coal resources are complex, and intelligent mining is the only way for the safe, efficient, and green development of deep coal resources. The complete set of intelligent mining technology and equipment that adapts to the
WEI LI, Xikui SUN
doaj   +1 more source

Research and application of top coal caving characteristics at end of fully mechanized caving working face in hard and thick coal seam with super large mining height

Meitan xuebao
Fully-mechanized caving mining with super-large mining height is an effective method for safe and efficient mining of thick and extra-thick coal seams. Aiming at the problem of poor top coal caving ability at the end of fully-mechanized caving mining in ...
Ying MA, Shijun LIU, Ziyan MA, Duanzhi MA   +3 more
doaj   +1 more source

Paste Filling Technology and Its Application in Fully Mechanized Caving Mining Under Aquifer

Meikuang Anquan, 2020
In view of the problem that water inrush is easy to occur in the mining of coal seam under aquifer, taking a mine in Shaanxi Province as an engineering background, this paper proposes a paste filling technology behind transitional support in fully mechanized top-coal caving mining, expounds its technical principle and technological process, and ...
openaire   +1 more source

The Synergistic Mechanism of Blending–Mining Coordination and Ash Content Traceability Control in Fully Mechanized Top-Coal Caving Mining: A Case Study

Sustainability
As a primary associated by-product of coal mining, the comprehensive utilization of coal gangue has become a core pathway for the green transformation of the energy system and the establishment of a resource recycling system. The fully mechanized top-coal caving mining method used in China lacks a quality linkage mechanism between underground matched ...
Qun Wang, Xipeng Gu, Mengtao Cao
openaire   +1 more source

Research on dynamic movement law of hydrogen sulfide on fully mechanized caving face of coal mine

Gong-kuang zidonghua, 2020
In view of problems such as difficulty in verifying reliability of research results, the single method is often used to study distribution law of hydrogen sulfide (H2S) concentration in fully mechanized caving face of coal mine, taking a coal mine working face in Shaanxi as research background, H2S concentration distribution and dynamic movement law of
JIN Yongfei, XU Yaqi, LIU Yin, ZHANG Dian, GUO Jun   +4 more
openaire   +1 more source

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

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   +1 more source

Grouting failure mechanism and new pre-grouting reinforcement technology of narrow coal pillar in fully-mechanized caving gob-side entry. [PDF]

Sci Rep
With the wide application of large machinery in coal mining, the influence of mine pressure is large and wide. Therefore, it is very important to retain and maintain the strength of coal pillars in the working face section.
Chen D, Zhang Z, Yue S, Tian C, Jia Q, Xie S, Zhao W, Chang J, Yang X, Xie F, Pan H.   +10 more
europepmc   +2 more sources