浅埋长壁综采工作面矿压控制技术与实践

Technology and Practices on Mine Strata Pressure Control of Fully Mechanized Longwall Coal Mining Face with Shallow Mining Depth

针对印度巴兰布煤矿P1首采工作面浅埋深、长壁和坚硬上覆岩层的开采特点,通过采场矿压特征分析和UDEC数值模拟计算,针对P1工作面提出了地面爆破方法的矿压控制技术。试验结果表明:P1工作面的顶板岩层属于难冒顶板,采用地面爆破措施可以有效地提高顶板的冒放性,并通过结合相配套的技术管理手段,取得了良好的矿压控制效果。

According to the mining features of the shallow mining depth, longwall and hard over strata in the P1 first coal mining face of Balamb Mine, India, with the analysis on the mine strata pressure features and the analysis on the UDEC numerical simulation calculation, a mine strata pressure control technology with a surface ground blasting method was provided for the P1 coal mining face. The test resuits showed that the strata of the roof above the 191 coal mining face was a difficult falling roof and the surface ground blasting measures applied could be effectively to improve the failing of the roof. With the related technical management means in combined, good strata pressure control results were obtained.