沿空留巷符合安全开采和完全开采的发展方向，具有广阔的应用前景，但已有的研究成果多是建立在浅部薄和中厚煤层沿空留巷的基础上，实践证明深部开采与浅部开采在矿压与显现、瓦斯涌出等方面有很大不同。因此，浅部煤层沿空留巷的理论成果与实践经验难以满足深部煤层沿空留巷的需要。 　　　本文采用理论研究和现场工业试验相结合的方法，系统研究了柔模混凝土沿空留巷围岩与支护刚度匹配、深井厚煤层沿空留巷支护、Y型通风与瓦斯防治技术，取得了如下研究成果： 　　　首次将柔模泵注混凝土支护技术成功应用于大埋深（820m）、大采高（5.2m）的高地压煤层沿空留巷，实测留巷顶底板最大移近量72mm，两帮最大移近量56mm。 　　　将沿空留巷直接顶、巷旁支护和底板简化为具有不同刚度的弹性体，建立了支围系统刚度结构模型，分析了各部分对系统刚度的影响，研究认为：单纯提高巷旁支护刚度对控制围岩变形效果不明显，必须保证直接顶刚度、巷旁支护刚度和底板相匹配。 　　　利用相邻工作面开切眼和顺槽实现Y型通风，建立了Y型通风主副进风巷配比和配风量的计算公式，揭示了采空区“U”型圈漏风通道是上隅角瓦斯超限的根本原因，提出减小采空区漏风和留巷埋管瓦斯抽放相结合的瓦斯综合防治技术。 　　　威特克提出的“分离岩块法”沿空留巷计算模型具有原理简单和易操作的特点，但是该方法没有考虑开采深度对沿空留巷围岩压力的影响，所以在深井沿空留巷条件下应用时误差较大。在考虑了开采深度的影响后，修正了“分离岩块法”计算模型，进而提出了修正后的沿空留巷围岩压力计算公式。 　　　深井厚煤层开采时矿压显现剧烈，加之试验工作面顶板松软破碎，移架后浇墙区顶板随即垮落，导致沿空留巷难以施工。为了防止浇墙区顶板垮落，提出一种在工作面煤壁附近对留巷浇墙区顶板进行锚网索永久加强支护的新方法；为了及时有效地切断直接顶，阻挡采空区矸石冲入留巷，提出一种在超前架间进行切顶挡矸支护的新工艺。

The gob-side entry retaining with safety mining and mining development direction, and has wide application prospect, but the existing research results mostly based on shallow thin and medium thick coal seam roadway retained along the base of the empty, practice has proved that the deep mining and shallow mining in the mine pressure and appearance, gas gushing out there are different. Therefore, shallow coal gob theoretical achievements and practical experience to meet the deep coal roadway along goaf needs. 　　　This paper combines theoretical research and on-site industrial test, system of deep and thick coal seam along the moving rule of surrounding rock, empty tunnel support design, ventilation and gas prevention and control technology of Y, and has been successfully applied in Henan Shenhuo Coal & electricity Xuehu Coal Mine 2307 working face, the results are as following: 　　　（1）The first flexible formwork-pumped concrete technology has been applied to the depth of 820 meters, 5.2 meters high wall of high pressure coal gob-side entry retaining, leaving roadway roof and floor maximum near 72mm, two for maximum near 56mm. 　　　（2）The gob-side entry retaining direct roof, roadway support and the bottom plate are simplified as elastic different stiffness of the body, has established branches in the system stiffness structure model, analyzed the influence of each part of the system, the stiffness of the research that: improve roadway support stiffness to control the surrounding rock deformation effect is not apparent, must guarantee direct roof stiffness, roadway support stiffness and the bottom plate matching. 　　　（3）The adjacent working face open-off cut and slot Y type ventilation, calculation formula of Y type ventilation main side into the airway and air distribution ratio was established, reveals the mined-out area "U" ring leakage channel is the upper corner gas overrun the root cause, is proposed to decrease the mining comprehensive gas control technology of air leakage area and Liu Xiang buried pipe gas drainage combined. 　　　（4）Witek proposed "separation of rock block method" of gob-side entry model, has the characteristics of simple principle and easy operation, but this method does not consider the influence of mining depth on gob-side roadway surrounding rock pressure, so the larger error along goaf under the conditions of application in deep well. In consideration of the influence of the mining depth, amendments to the "separation of calculation model of rock block method", the revised formula of roadway surrounding rock pressure along the gob and puts forward. 　　　（5）Deep and thick coal seam mining are pressure severe appearance, coupled with the roof test face soft and broken, moving frame post-cast wall caving roof immediately, leading to the construction of gob-side entry. In order to prevent the concrete wall area roof caving, near a proposed in working face coal wall on the left lane pouring wall area roof cable anchor permanent new method of strengthening support; in order to effectively cut off the direct roof, stop the waste rock in goaf into the left lane, put forward a kind of cutting top new technology support gangue branch in advance between frames.