Design and Application of Large Buried Depth and Ultra Long Stoping Working Face Under Complex Structural Conditions
In view of the current situation of complex geological and hydrological conditions of the first mining and stoping working face in the 11th mining area of Shandong Energy Luxi Mining Industry Xinjulong Company,such as large buried depth,thin bedrock,coal seam hidden outcrops,synclinal axis penetration and so on,adhering to the concept of"mining what should be mined,storing particles which should be stored",the cutting eyes layout of the working face is optimized and designed.The traditional vertical groove layout mode is abandoned,and a 120° angle arrangement mode between the cutting eyes and the tape groove is proposed,adjust the azimuth angle of the air intake groove three times,and adjust mining according to the combination way of virtual and solid.Adjust mining immediately after the initial mining,increasing the effective recoverable reserves of the working face by 168 000 tons and creating an efficiency of 239 million yuan.
stoping working facecomplex geological hydrological conditionadjusting mining
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