大佛寺煤矿复合煤层开采条件下的水害防治技术研究

Study on water disaster prevention and control technology under the condition of composite seam in Dafosi Coal Mine

复合煤层开采条件下,工作面回采受到上覆老空积水、离层水、含水层水影响,同时洛河组含水层作为其他充水水源的的补给来源,水害类型相互叠加影响,对下分层工作面的安全回采有着严重的威胁。以大佛寺煤矿40109工作面为例,分析工作面涌水原因和涌水通道,针对水害问题制定工作面安全开采的综合防治水措施,确保工作面安全回采,对相似条件下工作面水害防治具有借鉴作用。

Under the condition of composite seam mining,the working face is influenced by the overlying goaf water,the separated water and the aquifer water.Meanwhile,the aquifer of Luohe formation is used as the recharge source of other water-filled sources,interact with the water disaster types,which seriously threat the safety of mining in the lower slicing face.This paper takes the 40109 working face of Dafosi Coal Mine as an example,through the analysis of the causes of water gushing and the passage of water gushing,the comprehensive water prevention measures for the safe mining of working face have been worked out to ensure the safe mining of working face,which has an important guiding significance for the water disaster prevention and control of the working face under similar conditions.