超大综采工作面开采地表层含水性自修复研究  

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

作　　者：张建民[1] 杨峰[2] 李能考 何瑞敏 

机构地区：[1]神华集团有限责任公司,北京100011 [2]中国矿业大学(北京),北京100083 [3]神华神东煤炭集团公司研究院,陕西神木719315

出　　处：《煤田地质与勘探》2013年第6期38-42,共5页Coal Geology & Exploration

基　　金："十二五"国家科技支撑计划课题(2012BAC10B03)

摘　　要：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＂疏松＂作用,对含有粘土隔水层区域的含水性影响不显著,而对不含隔水层区域的含水性影响相对较强;地表层含水性自修复周期小于一个自然年,而大气降水是提升和修复地表层含水性的重要外因。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 su- per-large face mining has significant influence on the content of aeolian-sand surface layer in area without imper- meable 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.

关 键 词：超大工作面 开采全周期 探地雷达 含水率反演 自修复 

分 类 号：P641.4[天文地球—地质矿产勘探]