针对上层煤残留煤柱集中应力影响下，回采巷道布置难度大、支护困难等一系列问题，以中煤大同能源有限责任公司塔山煤矿30515 综放工作面为背景，采用理论分析、数值模拟、现场实测等方法，研究了上覆煤柱集中应力在底板的传递特征，30515工作面合理煤柱及巷道布置方式，围岩支护参数优化等。研究结果表明：在底板不同深度上，距离煤柱均布载荷越远，应力的分布范围越大，但影响程度越小。3-5号煤层巷道基本布置在距离上层煤底板20 m的层位，此时，上至上覆煤柱中心水平距离25 m以远煤柱应力集中的影响趋近于0。为了最大限度节约煤炭资源，30515大采高综放工作面的回采巷道可以采用沿空掘巷的方式进行掘进，经过计算区段煤柱留设宽度为8 m时,峰值应力小于煤柱的承载极限，煤柱完整性较好，回采巷道不会出现大的变形。“锚网索+钢带”的联合支护方式能够控制回采巷道围岩变形，30515运输巷在掘进过程中全程无明显矿压显现。研究结论对类似条件下巷道的支护提供了指导

ln view of a series of problems such as difficulies in layout of entry and supporting under the influence of concentrated stress ofresidual coal pillars in the upper coal seam, based on the background of No.30515 fully-mechanirzed top-coal caving face in 'Tashan CoalMie of China Coal Datong Energy Co., L.d., theoretical analysis，,numerical simulation , field measurement and other methods have beenused to stuly the transfer characterstics of the concentrated stress of the overlying coal pillar in the floor， the reasonable arrangement ofcoaul pillar and roalway in No.30515 working face , and the optinmization of the surounding rock control support parameters. The resultsshow that at different depths of the flor , the farther away the load is uniformly distributedl fiom the coal pillar, the greater the stress distrihution range and the smaller the inluence degree. The entry layout of No.3-5 coal seam is basically at a level 20 m away from the uppercoal flow.At this time, the stress in all directions appmoaches to 0 at a position 25 m away from the overlying coal pillar. In order to savecoal resources to the maximum extent , the entry of No.30515 large-cuting height fuly-mechanized top-coal caving face can be excavaltedlalong the goh. After calculation， the peak stess is less than the bearing limit of the coal pillar when the width of coal pillar in the sectionis 8 m , the integrity of the cal pillar is better , and the working face will not have large defomation due to mining disturbance.The com-hbined support movde of “anchor mesh cable + steel belt”can control the surrounding rock deformation of the mining roadlway. There is noobvious pressure in the whole process of No.30515 belt driving along the trench.The research conchusions provide a reference for the sup-port of entry under similar conditions.