新景矿为提高煤炭资源采出率，在3号煤层中开展了沿空留巷无煤柱开采技术研究。为优化新景矿3109工作面3109辅助进风巷区域应力，改善围岩赋存环境，采用水力压裂技术进行超前卸压，并通过优化柔模混凝土施工方案及工艺，采用水平长孔区域压裂技术，减少巷道变形量，保证回采安全，顺利回收煤柱。本研究对3109工作面附近进行巷道围岩地质力学评估，包括巷道围岩结构观测、强度测试及地应力测试与分析，并据此确定了钻孔的合理层位，制定了水平长孔区域压裂方案。

 In order to improve the recovery rate of coal resources in Xinjing Coal Mine, the technology of gob-side entry retaining without coal pillar mining was studied in No.3 coal seam. In order to optimize the regional stress of 3109 auxiliary air intake roadway in 3109 working face of Xinjing Coal Mine and improve the occurrence environment of surrounding rock, hydraulic fracturing technology is used for advanced pressure relief. By optimizing the construction scheme and process of flexible formwork concrete, the horizontal long hole regional fracturing technology is adopted to reduce the deformation of roadway, ensure the safety of mining and recover the coal pillar smoothly. In this study, the geomechanical evaluation of roadway surrounding rock near 3109 working face was carried out, including the observation of roadway surrounding rock structure, strength test and in-situ stress test and analysis. Based on this, the reasonable horizon of borehole was determined, and the fracturing scheme of horizontal long hole area was formulated.