复杂地质条件下孤岛工作面覆岩活化程度高、采场应力集中程度大、围岩破坏程度高、巷道围岩变形量大,导致工作面推进效率低下、巷道维护困难、采场返修工作冗杂等问题愈发严重,时刻威胁着煤矿企业的安全高效生产以及井下作业人员的生命安全。为此,本文以安阳煤矿1506孤岛工作面为工程背景,结合现场监测、理论分析、室内试验、数值仿真计算和现场工程实践的研究方法,开展安阳煤矿孤岛工作面矿山压力显现规律与巷道支护技术的研究，结果表明：
(1)基于现场实测,随着1506孤岛工作面的推进,工作面项板初次来压步距约为25m， 周期来压步距约为 16m：来压时支架阻力为 3554kN-3865kN，平均为 3731kN：来压时动载系数为1.07-1.26,平均为1.15;上覆岩层出现裂隙、离层、破断等周期性规律,中高位基本顶不再发生破断,下位基本顶呈现出“断而不均”的周期性结构特征回采完毕后工作面顶板整体呈现采空区中部低、工作面两端高的马鞍形应力分布形态,围岩裂隙的发育呈现出采空区两侧竖向裂隙为主,中部横向裂隙为主的特征。
(2)总结出影响孤岛工作面回采巷道围岩稳定性的主要因素，包括围岩岩性、采矿活动以及巷道支护：孤岛工作面回采期间垂直应力分布呈现为马鞍形，护巷煤柱的应力峰值较大且集中，超前支承压力峰值均出现在距离煤壁前方约 8m 处，峰值大小约为14.8MPa.
(3)使用极限平衡法计算得需要的补强支护强度为 103kN/m2，采用了在巷道顶部与帮部每排补强 2 根 中18.9mm 锚索的补强措施。同时基于数值模拟与现场监测对巷道补强支护效果的评估结果，发现补强支护后，巷道稳定性得到提升，巷道所受应力降低变形量减少，整体离层量控制在可控范围内，表明补强支护方案可以有效增加巷道稳定性，控制围岩变形，保证孤岛工作面的正常回采。研究成果为孤岛工作面的安全高效生产提供了一定工程及借鉴意义。

Complex geological conditions under the island face cover rock activation degree is high,the stope stress concentration degree, high rock damage degree, roadway surrounding rock deformation, this has led to increasingly serious problems such as low efficiency in advancing the working face, difficulty in roadway maintenance, and cumbersome repair work in the mining area, threatening the safety of coal mining enterprises and efficient production, the life
safety of underground workers. Therefore, based on the engineering background of the 1506 isolated island working face in Anyang Coal Mine. This paper uses research methods such as
on-site monitoring, theoretical analysis, laboratory tests, numerical simulation calculations, and on-site engineering practice to study the law of mining pressure manifestation and roadway support technology of the isolated island working face of Anyang Coal Mine. The results show:
(1) Based on the field measurement, with the advancement of the 1506 island working face, the initial weighting step of the working face roof is about 25 m, and the periodic weighting step is about 16 m. The support resistance is 3554kN-3865kN, with an average of 3731kN, and the dynamic load coefficient is 1.07-1.26, with an average of 1.15. There are periodic laws such as cracks, separation and breaking in the overlying strata. The middle and high basic roofs are no longer broken, and the lower basic roofs show the periodic structural characteristics of' breaking but not collapsing'. After the mining is completed, the roof of the working face shows a saddle-shaped stress distribution pattern with low in the middle of the goaf and high at both ends of the working face. The development of surrounding rock cracks shows the characteristics of vertical cracks on both sides of the goaf and horizontal cracks in
the middle.
(2) The main factors affecting the stability of the rock mass surrounding the mining roadway of the island working face are summarized, including the rock properties of the surrounding rock mass, mining activities, and roadway support. During the backfilling period of the island workface, the vertical stress distribution presented an saddle shape, and the stress peak of the protective roadway coal pillar was relatively large and concentrated. The peak value of the overlying pressure occurred at a distance of about 8m in front of the coal wall. with a peak value of about 14.8MPa.
(3) The limit equilibrium method is used to calculate the required reinforcement support strength of 103 kN/m?, and two p18.9mm anchor rods were installed in each row of reinforcement at the top and side of the roadway.Based on numerical simulation and on-site
monitoring, the effect of roadway reinforcement and support was evaluated, and it was found that the stability of roadway was greatly improved after roadway reinforcement and support.
The overall separation amount was within the controllable range. It shows that the reinforcement support scheme could effectively increase the stability of roadway, control the deformation of surrounding rock of roadway and ensure the normal mining advance of working face.The research results provide some engineering and reference significance for the safe and efficient production of the island working face.

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