Abstract: Chensilou coal mine 21401 fully mechanized working face showed monoclinal structure, two-roadway fall head nearly 57 m, the average slope of workface is 16.5 °. Through the multi-angle analysis of the reasons and harm of flying and down sliding, targeted put forward the technical measures to control the scraper conveyor flying and down sliding,ensure the safety and high efficiency of coal resources. By summarizing the relevant experience, for fully-mechanized face under similar conditions to control the scraper conveyor flying and down sliding to provide good technical support.

Key words: fully-mechanized face, monoclinal structure, scraper conveyor, flying and down sliding, control measures