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中文摘要：
针对黄河北薄煤层回采区矸石量大、采输困难等特点,遵循就地取材原则,通过室内试验分别确定沿空留巷和采空区充填材料的合理配比。根据损伤演化规律,结合矿压理论估算沿空留巷充填体的宽度。通过数值模拟方法分析工作面不同推进距离的围岩位移变化情况,得出充填后巷道及充填体的变形特征与现场监测结果基本一致,验证了本次充填支护技术的合理性,最终实现了矸石不升井的目的,取得了良好的经济效益。
英文摘要：
In view of the large number of waste rocks and the great difficulty of mining and transport in thin coal seam in the North of Yellow River, locally available materials were used in this technology. Laboratory tests were conducted to determine the reasonable ratio of filling materials used for gob-side entry retaining and goaf. The width of the filling body was calculated according to the damage evolution law and mine pressure theory. Numerical simulation was used to analyze the change of surrounding rock displacements with different advance distance away from working face. The results indicate that the simulated value of backfilled roadway and filling body deformation is basically the identical with the field monitoring data,validating the rationality of this backfill support technology. This technology has ultimately achieved the goal of getting no waste rocks out of the mine and has achieved good economic benefits.
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