Results 51 to 60 of about 24,399 (150)

Roof Fracture Characteristics and Strata Behavior Law of Super Large Mining Working Faces

Geofluids, 2021
Exploiting the working face in coal mines using a super long mining length and large mining height has become important for intensive production with high yield and high efficiency.
Guozhen Zhao, Baisheng Zhang, Lihong Zhang, Chao Liu, Shuai Wang   +4 more
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

Theory of coal wall spalling and cooperative control by “support-destressing” in 10 m ultra-large mining height working face

Meitan xuebao
Coal wall spalling is one of the main factors restricting the safe production of 10 m ultra-large mining height working face.In response to the problem of unclear mechanism of coal wall spalling and difficult control of surrounding rock in the 10 m ultra-
Jiangbin LIU, Zhizeng HUANG, Qianjin LIU, Zhen ZHANG, Cundi HAN, Xingyu LIN, Rongshan MA, Zhen ZHAO   +7 more
doaj   +1 more source

Research on gob-side entry retaining technology inclined fully mechanized mining face with large mining height

Meitan kexue jishu
In order to solve obvious dynamic pressure and support problems of gob-side entry retaining in steeply inclined fully-mechanized mining face with large mining height, taking 31111 fully-mechanized mining face in Shidonggou Coal Mine of Sichuan Coal Group
Teng LI, Yongdong JIANG, Huajun LIU, Yong ZOU, Tao GUI, Fei CHEN   +5 more
doaj   +1 more source

Stability of a Face Guard in a Large Mining Height Working Face

International Journal of Simulation Modelling, 2021
D. L. Wang, X. T. Zeng, G. F. Wang, R. Li   +3 more
openaire   +1 more source

Research on the Dust Transport Law in Large Mining Height Fully Mechanized Mining Face

Scientific Journal of Technology
The fully mechanized mining face with high mining height has always been a high-risk area for coal mine dust pollution. In order to further understand the spatiotemporal transport law of dust in the zoning of the high mining height fully mechanized mining face, the 122109 high mining height fully mechanized mining face of Caojiatan Coal Mine was taken ...
openaire   +1 more source

Key Stratum Structure and Support Working Resistance of Longwall Face with Large Mining Height in the Shallow Coal Seams, China

Advances in Civil Engineering, 2020
The fully mechanized mining with large mining height is the main method for high yield and efficient coal mining in China. The key stratum structure (KSS) is the basis of revealing the mechanism of roof weighting and determination of support working ...
Qingxiang Huang, Jinlong Zhou, Jian Cao
doaj   +1 more source

Developmental pattern of water flowing fractured zones in the soil-bedrock-type overburden and water-controlled mining strategy under a super-large mining height

Meitian dizhi yu kantan
BackgroundThe heights of water flowing fractured zones represent a key concern in the prevention and control of water disasters occurring in mining face roofs and water resource protection of coal mines.
Yujun ZHANG, Zhaolai HUA, Yejie SONG, Haoyu HU, Jiawei LI   +4 more
doaj   +1 more source

Overburden Behavior and Coal Wall Spalling Characteristics Under Large-Mining-Height Conditions

Applied Sciences
Large-mining-height technology has been increasingly applied in thick seam mining to enhance productivity and resource recovery. However, it also intensifies strata pressure and complicates surrounding rock control, leading to greater overburden movement,
Wenze Fan, Lijun Han
doaj   +1 more source

Research on the Laws of Destructive Patterns and Control Measures of Overlying Rock in High‐Efficiency Large‐Scale Mining Faces

Energy Science & Engineering
With the continuous advancement of coal mining technology, the mining height and length of working faces in China have increased, and ultra‐long fully mechanized mining faces with large‐mining heights have become the prevailing layout trend in modern ...
Chen Gong, Peilin Gong, Kang Yi, Kaijie Duan, Lizhu Liu, Peng Li   +5 more
doaj   +1 more source