为探测导水裂隙带发育特征及高度,以榆神矿区西南部30201工作面为研究对象,采用钻孔水文观测、岩芯地质、物理测井、直流电法、密集分布式光纤感测相结合的导水裂隙带探测技术以及数值模拟,对导水裂隙带发育高度及特征进行研究。结果表明:工作面裂隙带发育高度为135.00m,裂采比为21.43,冒落带发育高度为66.38m,冒采比为10.5,弯曲下沉带高度为94.87m;呈现出沿工作面倾向导水裂隙带在巷道发育最小,在工作面中心位置发育最大的“拱形”形态,冒落带在工作面中心位置发育最大,在巷道位置发育最小的特征;数值模拟精度与建立模型的地质条件参数密切相关,数值模拟与现场实测结果基本吻合。

In order to detect the development characteristics and height of the water-conducting fracturezone, 30201 working face in the southwest of Yushen mining area is taken as the research object, andthe detection technology of water-conducting fracture zone, which combines drilling hydrology observation, core geology, physical logging, direct current method and dense distributed fiber sensing, as well asnumerical simulation are used to examine the development height and characteristics of the water-conducting fracture zone. The results show that the development height of the fracture zone in the workingface is 135. 00 m, the fracture / production ratio is 21. 43, and the development height of the caving zoneis 66. 38 m; the mining ratio is 10. 5, and the bending subsidence zone is 94. 87 m. It is found that theinclined water-conducting fracture zone along the working face develops the smallest in the roadwayand the largest in the center of the working face, and the caving zone develops the largest in the centerof the working face and the smallest in the roadway. The accuracy of the numerical simulation is closelyrelated to the parameters of the geological conditions in which the model is established, and the numerical simulation is basically consistent with the field measured results.