掘进面瞬变电磁探测采空区及三维成像技术研究

发布时间：2018-04-10 04:01

本文选题：掘进工作面　切入点：全空间瞬变电磁法　出处：《煤矿开采》2017年01期

【摘要】：为优化掘进工作面前方采空区的全空间瞬变电磁法探测技术,针对晋城矿区不含水、含水采空区条件分别展开二维视电阻率断面图成像分析研究,并对推断结果进行了钻探验证;在此基础上,将采空区进行三维立体精细化成像,根据视电阻率层位切片图及三维等值面图推演采空区的赋存状况;同时,结合实际条件利用裂缝带高度经验公式对三维成像推论加以计算验证。结果表明:全空间瞬变电磁能较为及时准确地对前方有效探测深度内存在的采空区做出响应;三维成像技术能有效结合常规二维成像分析,更直观立体地反映采空区及覆岩破坏情况,指导钻探验证工作的进行;同时,三维成像技术也为裂缝带高度的研究提供了新的直观方式。
[Abstract]:In order to optimize the whole space transient electromagnetic detection technology of the goaf in front of the heading face, the imaging analysis of 2D apparent resistivity sectional map is carried out for the condition of the mining area without water and water in Jincheng mining area.On the basis of this, the goaf is imaged in three dimensions and fine, and the occurrence of the goaf is deduced according to the slice map of apparent resistivity layer and the three dimensional iso-surface map, at the same time,The three dimensional imaging inference is verified by using the empirical formula of fracture zone height in combination with practical conditions.The results show that the full space transient electromagnetic energy can respond to the goaf within the effective detection depth in time and accurately, and the 3D imaging technology can effectively combine with the conventional two-dimensional imaging analysis.More intuitively and stereoscopically reflects the situation of goaf and overburden rock damage, and guides the drilling verification work, at the same time, 3D imaging technology also provides a new visual way for the study of fracture zone height.
【作者单位】：煤炭科学研究总院开采研究分院;煤炭科学技术研究院有限公司安全分院;煤炭资源高效开采与洁净利用国家重点实验室(煤炭科学研究总院);山西晋煤集团技术研究院有限责任公司;
【基金】：中国煤炭科工集团科技创新基金资助项目(2014QN013) 煤科院科技发展基金资助项目(2014JC07)
【分类号】：TD175

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