深部大倾角特厚煤层综放面回采巷道布置位置分析与实践

摘要

In order to solve the problem of extremely unstable situation for the mining drift surrounding rock in the fully mechanized working face of the Deep Steeply Dipping Thick coal seam,Aiming at the problem of whole section to press for the transport drift,putting forward the scheme of arrangement for transport drift along with the top of roof;Meanwhile putting forward the five possible scheme of arrangement for re-turn air drift:The position of Negative coal pillar,The position of Negative Zero coal pillar,the Position of just below coal pillar, The position of positive Zero coal pillar, The position of positive coal pillar,After analysis on the corresponding,putting forward the best scheme of the return air drift layout is the arrangement of Positive Coal pillar and broking floor 1 meters. the scheme of arrangement improved the system of mining in the Deep Steeply Dipping Thick coal seam,solved the problem of extremely unstable situation for the mining drift surrounding rock control.%为了解决深部大倾角特厚煤层综放工作面回采巷道围岩极不稳定的问题, 针对运输平巷的全断面来压问题,提出运输平巷沿顶板掘进;同时提出了回风平巷布置的五种可能:负煤柱布置、负零煤柱布置、正下方布置、正零煤柱布置和正煤柱布置,进行了相应的分析后,提出回风平巷应破底板平距1m掘进、在正煤柱位置布置. 该布置方案完善了深部大倾角特厚煤层综放开采体系,解决了回采巷道围岩控制的难题.