对老顶高压注水是防治冲击地压的新途径

冲击地压是岩体工程中的一种灾害,特别是在煤矿造成的灾害尤为突出。因此,冲击地压问题引起国内外岩石力学界和采矿界的广泛重视,进行了大量的科学研究工作,取得了一些重要的成果,但防治研究则多以煤体为对象。本文认为,老顶运动是发生冲击地压的主导因素,对老顶进行高压注水压裂软化是防治冲击地压的一种新途径。作者在枣庄矿务局陶庄煤矿对坚硬砂岩顶板进行了高压注水试验,取得了很好的效果。本文重点论述了这次试验取得的一些重要结论和效果。

HIGH PRESSURE WATER INJECTION TO THE MAIN ROOF AS A NEW APPROACH FOR PREVENTING ROCKBURST DISASTERS IN COAL MINES

Rockburst is a kind of disasters in roekmass engineering, especially in coal mines. In the past, however, most attention for preventing the disaster of rockburst in coal mines was focused on coal. In the present paper, the movement of the main roof is considered to be the key factor that causes rockburst to occur, and hydraulic fracturing-softening of the main roof by the method of high-pressure water injection is thought to be a new way for preventing roekburst disasters. The authors have made a successful experiment on the above method for hard thick sandstone roof in the Taozhuang Coal Mine, Zaozhuang Mining Administration. This paper emphatically presents some major results and important conclusions of the experiment.