为探究煤矿未采区地面水平井不同层位压裂效果差异，揭示瓦斯治理全周期各阶段工程施工效果的相互作用机制，结合朱集东矿ZJ2−1与ZJ2−2井施工现状，从压裂施工规模、压裂施工曲线和测压降数据角度，分析各段及各层位压裂效果的差异，并与微地震监测结果对比验证；分析钻井、压裂效果对气水产出效果的影响及停产诱因，揭示地面水平井钻井、压裂与排采工程全周期之间的相互作用机制，提出煤矿未采区地面水平井瓦斯治理过程面临的关键问题及建议。结果表明：ZJ2−2井较ZJ2−1井与ZJ2−1井的煤层较顶、底板压裂的裂缝打开效果好，而微地震结果显示顶底板压裂较煤层压裂效果好，这是由于压裂效果好不但需要裂缝均匀打开，还需要确保裂缝持久性高。钻井效果体现在钻井轨迹与井筒稳定2个方面，钻井轨迹不仅会直接影响井筒稳定，还会影响压裂效果，压裂施工会降低井筒稳定，而井筒稳定是保障排采工程顺利进行的基础。井筒稳定性受钻井层位、压裂施工、储层岩层与长期浸水等因素的影响均不可忽视，压裂效果好只是排采效果好的必要条件，排采效果的好坏很大程度上还受井筒稳定性与排采制度精细化程度的影响。两口井排采阶段均可划分为返排、上产、稳产、停产和再产气5个阶段，ZJ2−1井的返排率较大且大于1，说明存在邻近水源的侵入，导致压裂效果较好的ZJ2−1井的产气效果较差。最后，从地面水平井瓦斯治理技术优选、钻井轨迹精准控制、井筒稳定性控制、排采制度优化和水赋存环境探测等角度总结了煤矿未采区地面水平井瓦斯治理过程中存在的关键问题，并给出相应的开发建议，以期为煤矿未采区地面水平井瓦斯治理提供思路。

To explore the differences in fracturing effects of different levels of ground level wells in unmined coal mines, and to reveal the interaction mechanism of construction effects in various stages of gas control throughout the entire cycle, combined with the construction status of ZJ2−1 and ZJ2−2 wells in Zhujidong Mine, the differences in fracturing effects of each section and level were analyzed from the perspectives of fracturing construction scale, fracturing construction curve, and pressure drop data, and compared and verified with microseismic monitoring results; Analyze the impact of drilling and fracturing effects on gas and water production efficiency, as well as the reasons for production shutdown, reveal the interaction mechanism between the entire cycle of surface horizontal well drilling, fracturing, and drainage engineering, and propose key issues and suggestions for gas control in surface horizontal wells in unmined coal mines. The results showed that the fracture opening effect of the coal seam in ZJ2−2 well was better than that of the top and bottom plate fracturing in ZJ2−1 well and ZJ2−1 well, while the microseismic results showed that the top and bottom plate fracturing had better fracture opening effect than the coal seam fracturing. This is because the fracturing effect is not only good, but also requires uniform crack opening and high crack persistence. The drilling effect is reflected in two aspects: drilling trajectory and wellbore stability. Drilling trajectory not only directly affects wellbore stability, but also affects fracturing effect. Fracturing construction will reduce wellbore stability, and wellbore stability is the foundation for ensuring the smooth progress of drainage projects. The stability of the wellbore cannot be ignored due to factors such as drilling layer, fracturing construction, reservoir rock layers, and long-term immersion. Good fracturing effect is only a necessary condition for good drainage effect, and the quality of drainage effect is largely influenced by the stability of the wellbore and the refinement of drainage system. The production stages of both wells can be divided into five stages: backflow, upward production, stable production, shutdown, and re production of gas. The backflow rate of ZJ2−1 well is relatively high and greater than 1, indicating the invasion of adjacent water sources, resulting in poor gas production of ZJ2−1 well with better fracturing effect. Finally, the key issues in the gas control process of surface horizontal wells in unmined areas of coal mines were summarized from the perspectives of optimal selection of surface horizontal well gas control technology, precise control of drilling trajectory, stability control of wellbore, optimization of drainage system, and detection of water storage environment. Corresponding development suggestions were provided in order to provide ideas for gas control of surface horizontal wells in unmined areas of coal mines.