基于水位变推法的采空区注浆效果即时分析  

Real-time analysis of goaf grouting effect using speculative method ground on water level change

作　　者：赵文 ZHAO Wen(CCTEG Ecological Environment Technology Co.,Ltd.,Beijing 100013,China;CCTEG Circular Industry Research Institute(Shandong)Co.,Ltd.,Jining 272000,China)

机构地区：[1]中煤科工生态环境科技有限公司,北京100013 [2]中煤科工循环产业研究院(山东)有限公司,山东济宁272000

出　　处：《煤炭工程》2025年第3期50-57,共8页Coal Engineering

基　　金：中国煤炭科工集团有限公司科技创新创业资金专项重点项目(2018-2-ZD007);天地科技股份有限公司科技创新基金(0206TDST0001)。

摘　　要：为解决全充水采空区注浆治理过程中面临的质量控制难题,以济宁岱庄煤矿充水采空区为研究对象,对注浆充填过程中地下水位变化规律及其影响因素进行了研究,借此来即时分析采空区注浆效果。依据钻孔水位、冲洗液漏失位置、注浆量等实时数据,并结合区域水文地质条件,查明了研究区地下水位动态变化特征,掌握了注浆充填对充水采空区地下水位影响规律,同时提出采用水位变推法即时评价采空区注浆效果,并动态调整注浆工艺参数,以改善注浆充填质量。结果表明:在注浆之前,采空区勘查钻孔水位埋深基本相同,导水裂缝带有较好的水力联系;在注浆前期,采空区地下水位变化不明显,注浆所引起的地下水位抬升具有滞后性。随着持续注浆,采空区钻孔水位不断升高,且区域之间差别明显,这表明采空区覆岩导水裂隙有所减少,采空区岩层渗透性显著降低,注浆效果逐渐显现,钻孔水位与采空区注浆效果密切相关。更进一步可根据后序钻孔水位变化特征,预测钻孔可注性,即时分析注浆效果,优化后续注浆方案。To solve the quality control problem of grouting treatment process in water-filled goaf,we took a water-filled goaf of Daizhuang Coal Mine in Jining as the object,to study the variation law and influencing factors of groundwater level in the goaf during grouting,and analyze the grouting effect in real-time.Based on real-time data such as drilling water level,flushing fluid leakage location and grouting volume,combining with regional hydrogeological conditions,the dynamic change characteristics of groundwater level in the study area were identified,and the impact of grouting on the groundwater level in the water-filled goaf was mastered,the speculative method ground on water level change was proposed to evaluate the goaf grouting effect in real-time,dynamically adjust and optimize the grouting process parameters,and improve the grouting quality.The results show that before grouting,the water level buried depth of the exploration borehole in the goaf is basically the same,the water conducting cracks have good hydraulic connections;In the early stage of grouting,the change of groundwater level in goaf is not obvious,and the groundwater level rise caused by delayed grouting effect.With continuous grouting,the borehole water level in the goaf continues to rise and the regional difference is obvious,indicating that the water conducting cracks in the overlying rock of the goaf are reduced,the permeability of the rock strata in the goaf is significantly reduced,and the grouting effect gradually becomes apparent,the borehole water level is closely related to the grouting effect in the goaf.Furthermore,according to the change characteristics of water level in subsequent boreholes,the groutability of the borehole can be predicted,the grouting effect can be analyzed in real-time,thus to optimize the subsequent grouting schemes.

关 键 词：充水采空区 水位变推法 地下水位 注浆效果 

分 类 号：TD325[矿业工程—矿井建设]