综合物探在淮北覆盖区煤田采空区勘查中的应用  

Application of Comprehensive Geophysical Prospecting in the Exploration of Coal Mined Areas in Huaibei Covered Area

作　　者：陈广涛[1,2] CHEN Guangtao(Institute of Geophysical and Geochemical Survey Technology of Anhui Province;School of Resources and Environmental Engineering,Hefei University of Technology)

机构地区：[1]安徽省地球物理地球化学勘查技术院,安徽省合肥市230022 [2]合肥工业大学资源与环境工程学院

出　　处：《现代矿业》2021年第11期24-29,共6页Modern Mining

摘　　要：淮北某拟建的金融服务中心场地位于岱河煤矿井田范围内,工程场地下赋存多层可采煤层。为了确保工程建设安全,在充分收集地质资料、采矿资料的基础上开展工程地质调查、地球物理勘探、钻探等采空区勘察工作。其中,地球物理勘探采用微动、EH4综合物探勘查手段。微动采用了自主编制的高分辨率频率—波数法处理软件,提取频散曲线及视S波速度分层,刻画了地层的速度结构。将微动和EH4成果对比分析后,推断了采空区的具体分布特征,且在后期的钻探中得到了验证。结果证实了微动、EH4综合勘探在煤田采空区勘查上有较好的勘探效果。A proposed financial service center site in Huaibei is located within the Daihe coal mine field,and there are multiple mineable coal seams under the engineering site.In order to ensure the safety of engineering construction,on the basis of fully collecting geological data and mining data,carry out engineering geological survey,geophysical prospecting,drilling and other mined-out area surveys.Among them,geophysical prospecting adopts micro-motion and EH4 comprehensive geophysical prospecting methods.The micro-motion adopts the self-made high-resolution frequency-wavenumber method processing software to extract the dispersion curve and apparent S-wave velocity layering,which depicts the velocity structure of the formation.After comparing and analyzing the fretting and EH4 results,the specific distribution characteristics of the mined-out area were inferred,which was verified in the later drilling.The results confirmed that the micro-movement and EH4 comprehensive exploration has a good exploration effect in the exploration of coal mined areas.

关 键 词：煤矿 采空区 微动 EH4电磁勘探系统 

分 类 号：P631[天文地球—地质矿产勘探] TD325.3[天文地球—地质学]