瞬变电磁法在敏东二矿水文地质勘察中的应用研究

发布时间：2018-04-27 11:34

本文选题：瞬变电磁法 + 水文物探　；参考：《河北工程大学》2015年硕士论文

【摘要】：水害一直是困扰大水矿井的主要问题，故建井前期在水文地质勘察工作中查明区域内主要含水层富水性、含水层间的水力联系及构造的导水性是煤田水文地质研究的重要课题。瞬变电磁法具有成本低、效率高、对低阻敏感、体积效应小等优势，，近年来被广泛应用于水文地质和工程勘察领域。传统的水文地质勘察工作主要采用钻探与抽水试验相结合的方式，该方法成本高，施工周期长。本文以敏东二矿水文勘探工作为依托，充分利用瞬变电磁法的优势，将其运用到水文地质勘查中，指导钻孔布置；并与抽水试验相结合，在抽水前后分别进行探测，将所得数据用时移性反演手段进行处理，以期得到含水层间的水力联系；在含水层富水性分析过程中，将探测数据用方差属性分析的方法处理；最后通过瞬变电磁勘探成果与抽水试验成果的比较，来共同说明测区的含水层范围以及富水性强弱的问题。分析结果表明：充分利用瞬变电磁与抽水试验各自的优势，全方位、多角度进行推断、分析、评价，得到了更加准确直观的水文地质资料；探测数据的时移性反演能够一定程度上说明地下水的水力联系；综合对比利用物探与抽水试验的结果，更加直观准确的说明了含水层范围、富水性强弱以及含水层水力联系等问题，为煤矿的下一步工作提供了有利的技术支撑。
[Abstract]:Water damage has been the main problem that plagued the big water mine, so it is important to find out the water rich in the main aquifers in the area of hydrogeological survey, the hydraulic connection between the aquifers and the water conductivity of the structure in the early period of the construction of the well. The transient electromagnetic method has the advantages of low cost, high efficiency, low resistance and small volume effect. These advantages have been widely used in hydrogeology and engineering investigation in recent years.
The traditional hydrogeological prospecting work mainly adopts the way of combination of drilling and pumping test. This method has high cost and long construction period. Based on the hydrological exploration work of Min Dong two mine, this paper makes full use of the advantages of transient electromagnetic method and applies it to the hydrogeological exploration to guide the drilling layout, and combined with the pumping test. When the water is detected before and after the water, the data is processed with time shift inversion, so as to get the hydraulic connection between the aquifers. In the process of water rich analysis of the aquifer, the detection data are processed by the method of variance attribute analysis. Finally, the comparison of the transient electromagnetic exploration results and the pumping test results is used to illustrate the measurement. The area of aquifer and the problem of water rich and weak.
The analysis results show that the hydrogeological data can be obtained more accurately and intuitively, and the time-lapse inversion of the detection data can explain the water force connection of the groundwater to a certain extent, and the comprehensive comparison of geophysical and pumping tests is made by the advantages of the transient electromagnetic and pumping tests. The results show that the range of aquifers, the strength of water rich and the hydraulic connection of aquifers are more intuitively and accurately, which provide favorable technical support for the next work of the coal mine.

【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631.325

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