大型矿井多煤层分阶段配采开拓优化设计OA

In view of the difficult technical problems such as large well field range,numerous coal seams,uneven resource distribution and others in large-scale mines,taking the lower coal group deepening(matching mining)project in Tang'an Coal Mine as the research background.By analyzing the existing limitations of the mine production system and the resource conditions of the lower coal group,and through technical and economic comparison and selection of development schemes,it is finally determined that the lower coal group adopts a newly built"No.2 auxiliary inclined shaft,No.2 return air vertical shaft+deepening main inclined shaft+tape subinclined shaft"development layout scheme.Meanwhile,under the condition of scientifically analyzing factors such as resource conditions,distribution laws,production capability,service life and others of No.3,9,and 15 coal seams in the mine,by optimizing the development scheme layout and system capabilities,the three coal seams are divided into three stages for matching mining and production,meeting the production requirements of 1.8 Mt/a in the mine,achieving a"layered,partitioned,and independent system"matching mining pattern for multiple coal seams,and ensuring safe,efficient,green and environmentally friendly production in the mine.