神东矿区地下水变化观测与分析研究

针对西部大规模高强度煤炭开采对地下水的影响，利用神东矿区约1 500 km2区域的200余个钻孔的长期观测结果，研究了超大综采工作面开采工艺对地下水系统的影响规律，地下水流场变化与基岩和含水层空间分布的关系。研究表明，超大综采工作面开采形成了地下水"汇聚带"，开采对基岩和含水层厚度较薄区的地下水系统影响较大，研究区采后含水介质厚度稳定且较厚区域含水层含水厚度损失大部分在30%左右，且逐步趋于稳定。 

Observations and analysis of groundwater change in Shendong mining area

The long-term observation data, from over 200 boreholes in Shendong mining area about 1500 km2, have been used for understanding the mining influence on groundwater system by the super-large mechanized face, characteristics with intensive coal mining in west China. It focuses on the relationship between the groundwater flow field and the spatial distribution of bed rock and aquifers. Results show that the super-large face has induced groundwater "convergence zone" and indicate the significant influence on the groundwater system in the area of thin bed rock and thin aquifer. Statistics reveals about 30% of water loss occurred in area with stable and thick aquifer after mining in the study area, after then the groundwater system has been gradually stabilized. The research is helpful to the scientific prediction of underground water supply and stored volume, for underground reservoir engineering and management.