摘要
为了研究煤岩层低阻异常区含水量,采用矿井瞬变电磁技术,建立合理观测系统,绘制煤层顶板不同层位视电阻率图,评价煤层顶板岩层富水性。通过统计疏放水钻孔出水位置及出水量,经过回归分析,探讨了典型侏罗系煤层顶板低阻异常区含水量与视电阻率的关系式;分析了基岩与裂隙带发育特征关系。通过研究认为,采用矿井瞬变电磁技术评价煤层顶板富水性,通过视电阻率数值变化预测岩层含水量,为煤矿防治水工程提供技术支撑。
In order to study water content in low resistivity anomalous area of coal seam, a reasonable observation system is established by using mine transient electromagnetic technology, and apparent resistivity maps of different strata of coal seam roof are drawn to evaluate water-rich of coal seam roof rock. The relationship between water content and apparent resistivity in low resistivity anomalous area of typical Jurassic coal seam roof is discussed by statistical analysis of water level and water output of drainage boreholes, and the relationship between bedrock and fracture zone development characteristics is analyzed. Through the study, it is considered that the water-rich roof of coal seam is evaluated by the mine transient electromagnetic technology, and the water content of rock stratum is predicted by the change of apparent resistivity value, which provides technical support for the water prevention and control project of coal mine.
作者
张军
ZHANG Jun(Xi′an Research Institute Co.,Ltd.,China Coal Technology and Engineering Group Corp.,Xi′an 710077,China)
出处
《煤炭技术》
CAS
2020年第4期149-152,共4页
Coal Technology
关键词
矿井瞬变电磁
视电阻率
顶板富水
回归分析
涌水量
mine transient electromagnetic
apparent resistivity
roof water
regression analysis
water inflow
