作　　者： ; ; (岳尊彩）;

机构地区： 中国矿业大学北京资源与安全工程学院

出　　处： 《岩石力学与工程学报》 2009年第2期342-347,共6页

摘　　要： 由于封堵不良钻孔形成的导水通道而造成煤矿突水事故时有发生,特别是奥陶系石灰岩含水层(简称"奥灰")钻孔隐性封孔不良,其形成的水害隐患更具有突发性、隐蔽性,对安全生产影响严重。以兴隆庄煤矿为例,通过对三灰地层的一采区石门巷道新增出水点、出水水样呈奥灰水质特征以及奥灰、十下灰水位异常等水文地质异常现象的分析研究,可以判断奥灰钻孔具有隐性漏水。主要原因是由于地质条件变化,在未下套管前的钻孔意外进入奥灰富水区,从而导致高压、高流速水流向其他含水层排泄,使得水泥封孔效果不佳形成隐性导水通道。据此提出井下钻孔化学注浆的防治方法,可对该类水害的防治有指导意义和借鉴价值。 Some of the water inrush accidents in mining are caused by unfavorable blocking of boreholes： and water inrush caused by unfavorable blocking of boreholes in aquifer of Ordovician limestone is the most harmful. Taking Xinglongzhuang coal mine for example, the potential water leakage of the boreholes in aquifer is introduced according to the hydrogeological data collected from the new water exits in coal crosscut of mining area I in Ordovician limestone. Water samples show that the water is located in Ordovician limestone and abnormal water level in X-down stratum of Ordovician limestone is found; and the potential leakage passage is determined, which may be caused by unfavorable cement blocking of boreholes. Because of the changes of the geological conditions of the boreholes＇ positions, the boreholes may penetrate into the water-enriched area of the Ordovician limestone; and then water drainages toward other aquifers with high pressure and high velocity will be formulated, which are the main factors induced by the unfavorable cement blocking of boreholes with the potential leakage passage. A chemical grouting method is presented; and it is found valuable references can be provided with the method for treating the water inrush hazards.

关 键 词： 采矿工程 奥陶系石灰岩含水层钻孔 隐性漏水 突水防治

领　　域： [矿业工程]