上覆煤层煤柱下采掘工作面应力分布规律研究

针对回采巷道布置在上覆煤层煤柱下的空间特点，利用FLAC3D数值模拟软件对老石旦煤矿031604综放工作面和031604工作面对接巷道以及上覆的9#、12#煤层的煤柱应力集中区的应力分布情况进行研究，通过数值模拟对上覆煤层煤柱下采掘工作面应力分布规律进行了详细的研究分析，并采取了针对性的防范措施，保证了工作面的安全高效地回采。

Study on stress distribution law of mining face under coal pillar under overlying coal seam

Aiming at the feature that the mining roadway is arranged under the pillar of overlying coal seam,numerical simulation of the stress distribution in stress concentration zone of the 031604 fully mechanized caving face and the 031604 working face the roadway and coal pillars of the overlying 9# and 12# coal seams using FLAC3D numerical simulation technology,through the numerical simulation, the stress distribution law of mining face under coal pillar under overlying coal seam is studied and analyzed in detail and take targeted preventive measures to ensure safe and efficient mining of the work surface.