Application of discrete element method in coal-loading simulation of drum shearer
XU Chan;WANG Yiliang;XIE Jiacheng;YANG Zhaojian;College of Mechanical Engineering;Shanxi Key Laboratory of Fully Mechanized Coal Mining Equipment;
As to the issues such as the low mining face in thin seam,the limited drum diameter and the small outlet area of coal,which seriously decrease the loading efficiency,a discrete element method is used to analyze the coaling process of a shearer drum. According to the drum design theory,the drum model is built in UG. Combining with the actual coaling conditions of the shearer, the particle constitutive model and the matching scheme of the shearer and scraper conveyor in the fully mechanized coal mining face are determined. Through the 3D discrete element software PFC3 D,a co-simulation model is built with Fish language and PFC command,which includes the drum,the coal wall and the chute of scraper conveyor. The drum traction speed is set as 2. 5 m / min,the rotational speed is respectively set as 40,45,50,55 and 60 r / min,and the coal loading efficiency at different rotational speeds and the optimal range of the rotational speed of the drum are obtained.