煤层注水预防冲击地压的研究

煤层注水防治冲击地压的方法简易、价廉、适应性广 ,同时具有降尘、降温及软化煤层功用 ,一举数得 ,可以作为冲击地压防治的首选措施。煤层注水防治冲击地压的机理以及注水过程中 ,对水在煤层中的运动规律还缺乏研究 ,因而工艺参数决定只能依靠经验 ,存在很大盲目性 ,必然影响防治效果。因此 ,笔者从水对煤物理力学性质的影响 ,对煤层注水防治冲击地压的机理等方面进行了分析和研究 ,认为煤层注水过程 ,实际上是水驱气的驱替过程 ,是有动界面的渗流力学问题 ,为此 ,进一步研究了水在煤层中的运动规律。研究的结果和有关数据 ,为制订煤层注水防治冲击地压的工艺参数提供依据 ,为有效地防治冲击地压的发生 ,提供了新的手段。

Study on Water Pouring into Coal Seam to Prevent Rock-burst

The method of water pouring into coal seam is simple to operate, low cost and has good adaptability with multi functions of dust suppression, temperature lowering, and coal seam softening, which is the first choice for controlling the rock-burst. Due to the rareness in the research of its mechanism and moving regularity of water in coal seam, process parameters could only be determined by experience with great blindness and low efficiency. According to effects of physical and mechanical properties, the preventive mechanism of rock burst by water pouring technique is described. The process of water pouring into coal seam is actually a process of forcing the gas out by water, which is a problem of seepage mechanics in the moving interface. The results of study on moving regularity of water in coal seam could provide criteria for relevant technical parameters, which in turn might be useful in efficiently controlling the occurrence of rock burst.