Results 241 to 250 of about 7,615,775 (267)

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
exaly   +2 more sources

Optimization Research of Hydraulic Support in Fully Mechanized Caving Face [PDF]

open access: yesProcedia Engineering, 2014
According to the problem that the high concentrations of fully mechanized caving face is difficult to control, the mathematical model of solving two-phase flow of gas and dust particles was built by established the k-ɛ-Θ-kp equation.
Lei, Zhang   +5 more
exaly   +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

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   +6 more
openaire   +2 more sources

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