Abstract
Increasing the jet flow rate and controlling the cutting paths aim to enhance effectiveness of coal-breaking. This research deals with the measurement and optimization of coal mass removal rate in high-flow water jet cutting. The effect of coal mass removal rate in high-flow water jet cutting with controlled movement paths on the influence of jet target distance, jet pressure, horizontal traverse velocity, and vertical oscillation velocity was investigated. The study further discussed the characteristics of coal-breaking and the process of coal mass removal to determine the impact of factors such as jet velocity, water cushion effect, total displacement of the jet, and the number of up and down movements on the trend of coal mass removal rate. Additionally, a regression model was established for coal mass removal rate, revealing the controlling factors and jet characteristics. The study works towards providing a substantial foundation for enhancing the efficiency of coal-breaking.
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