钱营孜煤矿E3213里段工作面“两带”高度探测与分析

Detection and analysis of the “two belts” height of the working face in the E3213 section of Qianyingzi Coal Mine

为了指导钱营孜煤矿防治水工作,实现顶板富水区下工作面安全回采,该矿在E313里段布置施工了两个“两带”观测孔,通过利用钻井液消耗量和孔内电视成像联合分析的方法,测出了实际地质数据,将实测结果与经验公式计算、数值模拟结果对比分析,表明应用经验公式计算、数值模拟得出的钱营孜煤矿E313里段工作面“两带”高度,实测获得的数据更可靠。本文通过对钱营孜煤矿E313里段工作面“两带”高度探测分析,以便正确指导开采上限的合理确定和保证矿井的安全合理开采,为其提高回采上限提供可靠技术依据。

In order to guide the water prevention and control work of Qianyingzi Coal Mine and realize the safe mining of the working face under the water-rich area of the roof, two “two belts” observation holes are arranged and constructed in the E313 section of the mine. By using the method of joint analysis of drilling fluid consumption and in-hole video imaging, the actual geological data was measured, and the measured results were compared with empirical formula calculations and numerical simulation results.It shows that the “two belts” height of the working face in the E313 middle section of Qianyingzi Coal Mine is calculated by the empirical formula and numerical simulation, and the measured data is more reliable.In this paper, through the detection and analysis of the height of the “two belts” in the working face of the E313 middle section of Qianyingzi Coal Mine, in order to correctly guide the reasonable determination of the mining upper limit, ensure the safe and reasonable mining of the mine, and provide a reliable technical basis for improving the mining upper limit.