煤矿开采不断向深部拓展，地应力、构造应力急剧增加，巷道及工作面围岩地质环境恶化，煤层中瓦斯含量大且赋存异常，回采工作面瓦斯超限问题严重威胁着煤矿的安全生产。沿空留巷能消除煤柱护巷时煤柱下方应力集中对巷道支护的不利影响，使巷道长期处于应力降低区；实现回采工作面Y型通风，有利于解决瓦斯超限问题；还能实现无煤柱安全开采，提高煤炭资源回收率，降低矿井掘进率等。因此，沿空留巷现今已经成为了我国煤炭开采技术的发展趋势。 　　　本文采用理论研究、数值模拟和现场工业试验相结合的方法，系统研究了大埋深厚煤层回采空间应力分布规律、沿空留巷采空区顶板活动规律、巷旁充填体支护设计等多个沿空留巷关键性问题。应用FLAC数值计算软件详细分析了大埋深条件下沿空留巷围岩的应力分布情况，特别是在不同宽度条件下巷旁充填体的应力情况进行了对比分析，得出了薛湖煤矿大埋深厚煤层条件下巷旁充填体的合理宽度。 　　　柔模混凝土沿空留巷技术在河南神火集团薛湖煤矿2307工作面进行了成功应用，实现了将柔模泵注混凝土技术成功应用于820米埋深、高地压、高瓦斯的厚煤层沿空留巷中。所留巷道断面保持在10m2以上，满足了生产、运输和设计要求。制定了沿空留巷监测方案，对沿空留巷进行全过程动态监测，掌握所留巷道的矿压显现规律，为优化沿空留巷设计提供科学依据，保证留巷效果。它开创了在大埋深厚煤层中高效快速沿空留巷的创新工程。

The coal mining is going to large buried depth of coal resources development, in-situ stress and tectonic stress having increased dramatically, roadway and working face surrounding rock geological environmental degradation. At the same time, it is high of abnormal occurrence coal seam gas content, and working face gas overrun problem seriously threaten the safe production of coal mine. The gob-side entry retaining can eliminate adverse effect of under roadway protection coal pillar stress concentration for roadway support, make roadway be in reducing chronic stress area; realize the working face of Y type ventilation, which is beneficial to solving the problem of gas overrun; realize no security coal pillar mining to improving the recovery rate of coal resources and reducing mine drivage rate and so on. So nowadays the gob-side entry retaining has become the development trend of coal mining technology in China. 　　　This paper combines theoretical research, numerical simulation and on-site industrial test, system study the large buried deep coal seam mining spatial stress distribution law, the gob-side entry retaining goaf roof for motion law, gob-side filling wall supporting design and so on for multiple the gob-side entry retaining key issues. FLAC numerical software are analyzed detailly under the condition of large buried depth for the surrounding rock stress distribution, especially analyzed filling wall stress distribution under the condition of gob-side filling wall different width, it is concluded that The Xue Hu Coal Mine's the reasonable width of gob-side filling wall under the condition of large buried depth thick coal seam. 　　　The gob-side entry retaining of Flexible Formwork Concrete has been successfully applied in Xue Hu Coal Mine 2307 working face, which realize the support technology of Flexible Formwork Concrete has successfully having been applied in the 820 meters of buried depth thick coal seam, high pressure, high gas the gob-side entry retaining. The gob-side entry retaining stay above 10m2, satisfying the requirements of production, transportation and design. Established the plan of the mine pressure monitoring, for the whole process of dynamic pressure along the gob-side entry retaining, master the mine pressure appear law of roadway, which will provide a scientific basis for optimizing the design for the gob-side entry retaining and ensure the gob-side entry retaining.This started efficient fast innovation project of the gob-side entry retaining under large buried deep thick coal seam.