Basing on the study of the daily time and energy metabolism budgets in various types of production and non-production activities it has been established that in summer the daily energy consumption in the drivers of mechanized columns amounts to not more than 3200 kcal, being equal to 3500 kcal in winter. These data form the basis of the determination of energy and food requirements of the group of workers under consideration.
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Front Plant Sci
July 2024
Nanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing, China.
Sci Rep
November 2023
School of Mechanical Electronic and Information Engineering, China University of Mining and Technology - Beijing, Beijing, 100083, China.
Emulsion pump station is widely used to provide power for full-mechanized coal mining face equipment. With the development of the mining technique of longwall face and the extensive use of large mining height and high working resistance of the hydraulic support, the fluid supply pressure is more unstable and the pressure impact is increasingly intensified. The intelligent control of the emulsion pump station is the key to the development of the stable fluid supply technology at the working face.
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October 2023
Faculty of Modern Agricultural Engineering, Kunming University of Technology, Kunming, China.
Aiming at the low mining rate in mines, Xingelao, Dabianyao, and Dongliang Coal Mines in Shenmu Mining Area, Shaanxi Province, China were taken as research objects. Based on this, this study constructed an evaluation index system for the mining capacity of the mines from the perspectives of geological factors, mechanical equipment, humans, and mining design. Moreover, the factors influencing the mining capacity of the mines were evaluated using a combination weighting approach based on an improved analytic hierarchy process and an entropy weight method.
View Article and Find Full Text PDFSci Prog
April 2022
School of Safety Science and Engineering, Liaoning Technical University, Fuxin, China.
Existing studies of the structural strength of longwall mining hydraulic support are mainly focused on the force acting on individual supports instead of the general mechanical characteristics of the support group in a fully mechanized coal seam working face. This study combines theoretical analyses and experiments to investigate the mechanical characteristics of a longwall mining hydraulic support group and the stiffness of key support components under different working conditions. The theory of a beam on an elastic foundation was applied to construct a mechanical model for the hydraulic support group.
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