Results 11 to 20 of about 277,436 (279)

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
doaj   +3 more sources

Trial of small gateroad pillar in top coal caving longwall mining of large mining height

International Journal of Mining Science and Technology, 2016
Abstract Coal seams in Tashan Mine of Datong Coal Group in China average 15 m thick and have been mined by the top coal caving longwall mining method of large mining height. Mining height was 3.8 m and the top coal caving height was 11.2 m. The gateroad pillar between panels was 38 m.
Huamin Li, Peng Syd, Huigui Li, Yongxiang Xu, Ruifu Yuan, Shuaishuai Yue, Kun Li   +6 more
openaire   +3 more sources

Fracture Mechanical Behavior of Cracked Cantilever Roof with Large Cutting Height Mining [PDF]

Shock and Vibration, 2020
Accurately predicting the roof collapse span is crucial in ensuring the safe production of thick seam mining with large mining height, which is easy in forming a “cantilever beam” structure.
Zenghui Zhao, Wei Sun, Mingzhong Zhang, Xiaojie Gao, Shaojie Chen   +4 more
doaj   +2 more sources

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

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   +3 more sources

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
doaj   +2 more sources

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   +2 more sources

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   +2 more sources

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

Int J Environ Res Public Health, 2023
Li X, Zhang X, Shen W, Zeng Q, Chen P, Qin Q, Li Z.   +6 more
europepmc   +2 more sources

Surrounding rock control technology of 10 m super large mining height working face in Caojiatan Coal Mine

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
doaj   +2 more sources

Dust Distribution of PM5 and PM10 in Large Mining Height Fully-Mechanized Face

Meikuang Anquan, 2020
In order to obtain the dust distribution of PM5 and PM10 in large mining height fully-mechanized face, the dust concentration around the shearer drum and along the downwind side of the shearer are measured under the conditions of the following wind and ...
SU Shilong, HAO Yongjiang
doaj   +2 more sources