Abstract
No matter in metal mines or coal mines, an emulsion pump station has a wide range of application market and can play an important role. In this paper, the frequency conversion constant pressure control system of the mine emulsion pump station is taken as the research object. The two kinds of water-based drawing fluids used are dispersed drawing fluid and emulsion drawing fluid. After the intelligent level of the equipment reaches a very high level, an environmentally friendly, safe, and efficient Internet of Things technology system will be added. Combined with 3D laser scanning technology based on self-scanning of road contours, the blast method is input to the terminals of the emulsion pump station for automatic blast hole positioning and semiautomation of the emulsion pump station. Combined with 5 g communication and other intelligent key technologies, it realizes high-end functions such as fault self-diagnosis, remote operation, and remote monitoring of the emulsion pump station and rock drill, which can be called full intelligent stage. The results show that the initial friction coefficient of drawing fluid A lubrication is 0.21, and then, with the extension of time, the friction coefficient gradually decreases to 0.14. The initial friction coefficient of drawing fluid B is 0.22, then it decreases rapidly to 0.13, then it is stable at 0.17, and then it remains basically unchanged. When the temperature is 55°C, the initial friction coefficient is 0.16 and then decreases to 0.12. Therefore, the frequency conversion constant pressure control system of the mine emulsion pump station should be selected according to the environment and application scenarios.
Highlights
According to the development of domestic emulsion pump station technology, domestic scholars are at or above the level of imported emulsion pump stations in some research directions
There are good use cases in straight wall type, curved wall type, door opening type, and special-shaped excavation section. e research and application of hydraulic fracturing technology are mainly concentrated in the oil and gas industry, but the application of hydraulic fracturing technology in coal mines has been studied and discussed by researchers in the United States, Australia, and Poland
The ZYS series full computer-controlled emulsion pump station developed by CRCC Heavy Industries is in the stage of dissemination and application that can complete automatic positioning, automatic drilling, advanced geological analysis, postblasting contour reconstruction, etc. e control system plays an important role [22]
Summary
Received 8 February 2021; Revised 7 March 2021; Accepted 18 March 2021; Published 8 April 2021. The frequency conversion constant pressure control system of the mine emulsion pump station is taken as the research object. Combined with 3D laser scanning technology based on self-scanning of road contours, the blast method is input to the terminals of the emulsion pump station for automatic blast hole positioning and semiautomation of the emulsion pump station. Combined with 5 g communication and other intelligent key technologies, it realizes high-end functions such as fault self-diagnosis, remote operation, and remote monitoring of the emulsion pump station and rock drill, which can be called full intelligent stage. E initial friction coefficient of drawing fluid B is 0.22, it decreases rapidly to 0.13, it is stable at 0.17, and it remains basically unchanged. Erefore, the frequency conversion constant pressure control system of the mine emulsion pump station should be selected according to the environment and application scenarios When the temperature is 55°C, the initial friction coefficient is 0.16 and decreases to 0.12. erefore, the frequency conversion constant pressure control system of the mine emulsion pump station should be selected according to the environment and application scenarios
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