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.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
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)
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
super-large working face
full mining process
geo-radar
moisture inversion
self restoration
