Application of Large Angle Rotary Mining Technology in Xiaonan Mine
Abstract：In order to solve the mining gateway layout difficulty,the frequent face equipment removing and the fully mechanized mining efficient lower problems occurred by the four coal mining faces in the previous design layouts for the standby mining area in the north part of the West No.3 Mining Block of Xiaonan Mine,according to the seam deposit features of the mining seam,based on the theoretical analysis,the previous designed four coal mining faces were simplified to one coal mining face（No.W3707） and a large angle rotary combined mining would be conducted.In order to ensure the technology successfully conducted,a 75° mining curve was reconstructed into 6 short strings.After the rotary center confirmed by twice,with the adjustment mining principle of the conveyor head with more advancing forward and the conveyor tail with less advancing,the deep and shallow cutting technique was applied to solve the technical problems of the three face removing and the coal mining rate of the coal mining face was improved about 5%.
Keywords：large anglerotary miningunequal length coal mining facerotary oblique adjustmentcutting cycleXiaonan Mine
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)