导水裂隙带发育高度作为保水开采的关键技术参数，直接决定着煤炭开采对含水层的影响程度，也决定着是否有必要采取保水采煤工艺开展保水开采。榆神矿区一期和三期规划区位于榆神矿区核心地带，属浅埋煤层区与中深埋深煤层区的过渡区域，区内萨拉乌苏组潜水含水层广泛分布，是重要水源涵养区，这些因素决定了该区成为了需要开展保水开采的重点区域。因此，在即将大规模开发之前，通过获取已采工作面导水裂隙带实测参数，总结适宜本区域地质条件的导水裂隙带发育规律，科学预测未采区导水裂隙带发育特征，是区内实现生态环境保护和绿色矿山建设目标的基础问题。 本文以榆神矿区榆树湾煤矿、杭来湾煤矿、金鸡滩煤矿、曹家滩煤矿、大保当煤矿、郭家滩井田和小保当一号井为研究区，以首采煤层2-2煤层开采导水裂隙带发育高度为研究重点，采用采空区钻探实测、数值模拟实验、相似材料模拟实验等手段，研究特定的地质条件下导水裂隙带发育特征，揭示了导水裂隙带发育规律，总结并提出了科学预判未采区导水裂隙带发育高度的预计公式。主要研究结论如下： （1）采用现场实测、数值模拟、物理模拟等多种手段，综合研究了榆神矿区首采煤层开采导水裂隙带发育规律，导水裂隙带高度总体分布在24-28倍采厚之间。 （2）分析了导水裂隙带发育特征，单一工作面煤层开采导水裂隙带和冒落带发育规律为工作面中心位置最大，向两侧顺槽位置略有变小，顶界轮廓向工作面内侧延伸，且沿工作面倾向高度变化不大，空间形态表现为沿工作面倾向呈中间最大两边略低的“平底锅形”。 （3）以导水裂隙带最大高度为母因素，以采深、采高、岩土比、砂泥比、砂层系数、砂岩平均厚度、覆岩综合硬度等7个因素为自变量，建立了导水裂隙带最大高度多元线性预计方程。

As a key technical parameter of water-preserved mining，the development height of diversion fissure zone directly determines the degree of influence of coal mining on the aquifer, and also determines whether it is necessary to adopt the water-retaining coal mining process to carry out water-retaining mining. The first and third phase planning areas of Yushen Mining Area are located in the core zone of Yushen diggings, which belong to the transitional area between shallow seam area and deep seam area. The widely distributed submerged aquifer of the Salawusu Formation in the area is an important source of water conservation area. These factors have determined that the area has developed into a key area for water conservation mining. Therefore, before the large-scale development, the basic problems for realizing the goal of ecological environment protection and green mine construction in the region are obtaining the measured parameters of the water-conducting fractured zone in the mined face, summarizing the development law of the water-conducting fractured zone suitable for the geological conditions of the region, and scientifically predicting the development characteristics of the water-conducting fractured zone in the unmining area. In this paper, Yushuwan Coal Mine, Hanglaiwan Coal Mine, Jinjitan Coal Mine, Caojiatan Coal Mine, Dabaodong Coal Mine, Guojiatan Coal Mine Field and Xiaobaodang No. 1 Well in Yushen mining area are taken as the research areas. The research focus is on the development height of the water-conducting fracture zone in No. 2-2 coal seam of the first mining coal seam. The development characteristics of water-conducting fractured zones under specific geological conditions in Yushen mining area are studied by drilling survey in goaf, numerical simulation experiment and similar material simulation experiment. The development law of water flowing fractured zone is revealed, and the prediction formula for scientifically predicting the development height of water-conducting fractured zones in unmined areas is summarized and put forward. The main conclusions are as followings: (1) Field measurement, numerical simulation, physical simulation and other means were used to comprehensively study the development law of the water flowing fractured zone in the first coal seam mining in the Yushen mining area. And the height of the water-conducting fracture zone is generally between 24 and 28 times mining thickness. (2)The development characteristics of the water flowing fractured zone are analyzed. The development law of the water flowing fractured zone and the caving zone in the single-face coal seam mining are as follows: The central position of the working face is the largest, and the slot position along both sides is slightly smaller. The top boundary contour extends to the inside of the working face, and there is little change along the inclined height of the working face. The spatial form is "pan-shaped" with the maximum in the middle and slightly lower on both sides along the inclination of the working face. (3)The multivariate linear prediction equation is established by taking the maximum height of the water flowing fractured zone as the primary factor and seven factors as independent variables，which are mining depth, mining height, rock-soil ratio, sand-mud ratio, sand layer coefficient, average thickness of sandstone and comprehensive hardness of overburden.