School of Energy science and Engineering, Henan Polytechnic University Shanxi Coal Import and Export Group Company Limited
Research Institute of Safety and Environment Technology, Engineering Institute, North China Oil and Gas Branch .

为探讨沁水煤田和顺矿区15号煤层采动覆岩导水特性,预防透水事故对煤矿安全生产的影响,利用相似材料模拟与数值模拟的方法对工作面采动覆岩导水特性进行研究,通过分析垮落带与断裂带导水通道的发育及分布特征对3号煤层老空水的渗流规律进行总结。结果表明:工作面推至175 m时覆岩主关键层破断,断裂带发育至3号煤层老空区,为顶板透水提供了导水通道,导水通道边界最大流速为9.70×10-4m/s,以此为参考,对15号煤层顶板突水危险区域进行划分,为和顺矿区顶板透水事故的预防提供依据。

In order to discuss water conductivity features of a mining overburden strata above No. 15 seam in Heshun Mining Area of Qinshui Coalfield and to prevent the water inrush a ccident affected to the mine safety production, the similar material simulation method and the numerical software simulation method were applied to study the water conductivity features of themining overburden strata above the coal mining face. With the analysis on the development and distribution features of the water flow channel in the collapsed zone and the fracture zone, a summarization was conducted on the seepage law of the water in the goaf of No.3 seam. The results showed that when the coal mining face was pushed forward to 175 m, the major key layer of the overburden strata broke and the broken zone was developed to the goaf in No. 3 seam. Thus a water flow channel was provided to the water inrush from the roof. A max water flow velocity at the boundary of the water flow channel was 9.70 x 10-4 m/s. Based on the above stated as the references, a division was conducted on the water inrush danger zone of the roof above N0.15 seam and could provide the basis to the prevention of the water inrush accident occurred from the roof in Heshun Mining Area.

国家自然科学基金青年基金资助项目(51604093)；河南理工大学博士基金自然科学类资助项目(B2017-42)；