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Capital in Agriculture: Its Formation and Financing Since 1870 [PDF]

Alvin S. Tostlebe
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Research on air curtain dust control technology for environmental protection at fully mechanized working faces

Environmental Science and Pollution Research, 2022
The development of coal industry is restricted by dust pollution. Air curtain dust control technology was proposed as a solution to the serious problem of pollution. A mixture of numerical modeling and field tests has been used to study this technology.
Wen Nie, Xu Zhang, Huitian Peng, Dawei Chen, Tao Du, Bo Yang, Chengyi Liu   +6 more
openaire   +2 more sources

Study on the fully mechanized longwall face working condition in China colliery

2020
At present, the coal production of the fully mechanized longwall face accounts for more than 40 percent of the whole amount in China. In order to improve the working condition of the fully mechanized longwall face, the investigation started in February, 1994.
Jiang Xueyun, M.D. Xie Yaoshe
openaire   +1 more source

Reliability Analysis of Fully Mechanized Working Face Based on Appraisal and Distribution Method

Advanced Materials Research, 2015
Through the system reliability theory, the reliability of each subsystem of fully mechanized working face was got. The reliability of the working face was 0.82. By using the reliability of redistribution, the reliability of weak links of the system was improved to 0.966, so that the reliability of the working face was raised to 0.86. The reliability of
Guang Peng Zhang, Jun Liu
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Finite Element Analysis of Abutment Pressure Distribution Characteristic of Working Faces in Fully Mechanized Sublevel Caving Face

Applied Mechanics and Materials, 2011
The elastic-plastic constitutive relationship and the Drucker-prager yielding criterion are used to simulate the behaviour of non-linear geo- materials. Dynamic change laws of abutment pressure of S2S2 work face of xiaokang coal mine is simuluted by the ansys program.
Hong Chun Xia, Zhen Qi Song, Li Jing Ru
openaire   +1 more source

Experimental study of the effects of air volume ratios on the air curtain dust cleaning in fully mechanized working face

Journal of Cleaner Production, 2021
Weimin Cheng
exaly  

Study on dust diffusion characteristics of continuous dust sources and spray dust control technology in fully mechanized working face

Powder Technology, 2022
Yapeng Wang, Zhong-an Jiang
exaly  

Research and Application of Automatic Mining Technology in Fully Mechanized Unmanned Working Face

Foreign Language Science and Technology Journal Database Engineering Technology, 2021
openaire   +1 more source

CFD modeling of coal dust migration in an 8.8-meter-high fully mechanized mining face

Energy, 2020
Wen Nie, Qiang Liu
exaly