The case of the Kolk coal mine of Yili Shenda Industrial Co., Ltd

Equipment ConditionModel: EBZ160J Time of use: June 9, 2008 - March 2009 Place of use: Nileke County, Yili Prefecture Unit of use: Yili Shenda Industrial Co., Ltd. Kolk Coal Mine Roadway and its geological conditions 1. The total length of the roadway is 800 meters. 2. The roadway is a coal and rock roadway, the hardness of the coal seam is about F4, and the rock joints are fully developed. Roadway support section and form Section: 4.1 meters× 3.0 meters Support: anchor rods, anchor cables, anchor nets, etc. The mining area is located on the northern slope of the eastern section of Aulal, in the north of the Tianshan Mountains, and the coal quality of this mine is gas coal, which is coking coal, with reserves of about 26.43 million tons. Sany EBZ160J is excavating the main transportation roadway, and the main geological structure of the roadway is all coal rock. This excavation task is mainly divided into 3 classes, and all three classes are excavation classes, because the roof is not very good, it is easy to appear that the phenomenon of rising to the top, most of the time is used in the support work, the support form adopts anchor rod, anchor cable and anchor net and U-shaped steel beam, an average of a steel beam every half a meter, in this case, *8981 high monthly footage can still reach about 80 meters, and the average monthly footage is generally 60-70 meters. The dust removal effect of the equipment has reached a relatively ideal state. In addition, the mine regularly maintains the equipment, so the failure rate of the equipment is relatively small.