超大综采工作面开采地表层含水性自修复研究

研究超大综采工作面开采对地表层（0~15 m）含水性影响规律是确定生态修复策略的基础。针对西部风积沙区大规模高强度煤炭开采的特点，采用时移高分辨率探地雷达探测方法进行了开采全周期（采前-采中-采过-趋稳后）观测，获得了基于现代ARMA谱分析的风积沙区地表层含水率反演方法。研究表明：研究区内地表层含水性与地下潜水含水层没有直接的水力联系；风积沙区超大综采工作面开采对地表层起到\

Aqueous self-healing of surface layer in mining area of super-large mechanized face

In large-scale coal mining of western aeolian sand area, determining the ecological restoration strategy depends mostly on surface layer variation caused by extensive mining of super-large mechanized face. The water content of surface layer (0~15 m) during full-process was detected by using Geo-radar. Result shows that the super-large face mining has significant influence on the content of aeolian-sand surface layer in area without impermeable layer, but not significant influence on the water bearing behaviour in area with a impermeable clay layer. Also it indicates that the moisture content tendency has obvious self-healing feature under loosening due to mining. The cycle of the self-restoration of aquiferous behaviour of surface layer is less one year. The precipitation is the important external factor for enhancement and restoration of aquiferous behaviour of surface layer.