Results 1 to 10 of about 494 (107)

Research on Overburden Movement Characteristics of Large Mining Height Working Face in Shallow Buried Thin Bedrock [PDF]

Energies, 2019
The overburden movement of the large mining height working face of shallow buried thin bedrock (SBTB) is a complex engineering problem with “time-space-intension”, which is of great significance to realize efficient and safe mining in the ...
Qingxiang Huang, Yanpeng He
doaj   +9 more sources

Floor Disturbance and Failure Characteristics of Super-Large Mining Height Working Face

Geofluids, 2022
The failure depth of the working face floor caused by mining is a key parameter to predict water inrush from the working face floor. Extensive research has been conducted on the floor failure zone of the working face. However, in recent years, there have
Cunjin Lu, Jinpeng Xu, Hui Zhao, Heng Zhang, Yian Zhang, Mingyue Chen   +5 more
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Coal Wall Spalling Mechanism and Grouting Reinforcement Technology of Large Mining Height Working Face

Sensors, 2022
To control the problem of coal wall spalling in large mining height working faces subject to mining, considering the Duanwang Mine 150505 fully mechanized working face, the mechanism of coal wall spalling in working faces was investigated by theoretical ...
Hongtao Liu, Yang Chen, Zijun Han, Qinyu Liu, Zilong Luo, Wencong Cheng, Hongkai Zhang, Shizhu Qiu, Haozhu Wang   +8 more
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The Roof Safety under Large Mining Height Working Face: A Numerical and Theoretical Study

Minerals (Basel, Switzerland), 2022
As an important technology of thick coal seam mining, fully mechanized mining with a large mining height has high mining efficiency. In order to study the roof safety control of large mining height working face, the 122106 working face of Caojiatan coal mine is taken as the engineering background.
Xiaofang Wo, Sen Yang, Haoran Hao
exaly   +3 more sources

Research on the Mechanism and Control Technology of Coal Wall Sloughing in the Ultra-Large Mining Height Working Face

International Journal of Environmental Research and Public Health, 2023
One of the primary factors affecting safe and effective mining in fully mechanized mining faces with large mining heights is coal wall sloughing. This paper establishes the mechanical model of the coal wall and uses the deflection theory for the mechanics of materials to find the maximum point of the deflection of the coal wall, which is the most ...
Xuelong Li, Wenlong Shen, Qingdong Zeng   +2 more
exaly   +4 more sources

Study on Surrounding Rock Control and Support Stability of Ultra-Large Height Mining Face

Energies, 2022
Surrounding rock control and support stability in the process of coal seam mining in ultra-large height mining face are the key to normal mine operation.
Sheng Wang, Xuelong Li, Qizhi Qin
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Surrounding rock control technology of 10 m super large mining height working face in Caojiatan Coal Mine [PDF]

Meitan xuebao
The 10 m ultra-large mining height of Caojiatan Coal Mine is a world’s first in terms of single mining height and mining intensity, and the effective control of surrounding rock in the stope is crucial for safe and efficient mining at the working face ...
Rui WANG, Gang XU, Hongpu KANG, Zhen ZHANG, Yajun LEI, Yanjun FENG, Ying MA, Zhizeng HUANG, Qianjin LIU, Xiaogang LIU, Xingyu LIN, Rongshan MA, Zhen ZHAO, Zhengjie LI   +13 more
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Strong mine pressure appearing mechanism and control at deep buried working face with large mining height [PDF]

Meitan kexue jishu
During the mining of the adjacent working face, the strong mine pressure caused by the hard thick roof has obvious zoning characteristics due to the mining of the previous deeply buried large mining height working face.
Zhaoyuan LEI, Maoping ZHAO, Tuanjie LI, Feng LI, Lei LI   +4 more
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Research on Surface Failure Law of Working Faces in Large Mining Height and Shallow Buried Coal Seam [PDF]

Advances in Civil Engineering, 2020
In the process of high-intensity and large-space mining in Shendong mining area, various surface cracks are generated on the surface, resulting in serious damage to the surface buildings and the local ecological environment.
Zhenhua Li, Yingkun Pang, Yongsheng Bao, Zhanyuan Ma   +3 more
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Research on key technologies of intelligent fully mechanized mining on working face with large mining height

Gong-kuang zidonghua, 2018
In order to solve problems of large number of workers and high labor intensity on fully mechanized mining face with large mining height, according to actual situation of No.2 Coal Mine of Huangling Mining Group Co., Ltd., technical difficulties such as ...
FAN Jingdao
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