Research on Ultra-long Haul Scraper Conveying Technology in Yujialiang Thin Coal Seam
In order to solve the transportation problem of 1.4 m coal seam and 350 m wide face coal mining in Yujialiang coal mine,Shendong,the overall supporting scheme of complete sets of equipment for ultra-long face of thin coal seam is formulated.Based on the checking calculation of installed power and chain safety factor,the main technical parameters of scraper conveying equipment are determined.Developed the φ38/86×137 broadband chain and chain drive system,thin coal seam extremely low middle trough,sinking retractable tail,fixed distance end unloading integrated head pushing part,to meet the demand for supporting space of high-power equipment in thin coal seam;the automatic tightening control process of the telescopic tail is optimized,and the intelligent control system of the scraper conveyor is configured,which provides technical support for the unmanned management of the transportation equipment of the working face.The underground industrial practice has proved that the equipment is in good use,and the working face has become a demonstration project of intelligent mining of thin coal seam.
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