摘要:
[目的] 煤电一体化模式是近年来火力发电厂的一个发展方向,对有些规划建在煤矿产区的火力发电厂,其厂址区内存在的煤矿采空区对电厂的安全带来很大威胁,而采空区探测是其评价和治理的基础,因此采空区探测是一项十分重要的工作。 [方法] 针对贵州煤电一体化大方电厂厂址内煤矿采空区的特点,开展综合物探技术在煤矿采空区探测中的研究,克服单一物探技术的缺点,根据地质体的电性和弹性差异,采用高密度电法、瞬变电磁法和浅层地震映像法相结合的方法,开展采空区探测。 [结果] 通过物探技术的综合解译,给出了采空区巷道和空间分布并进行了钻探验证,取得了较好的效果,为后续煤电一体化电厂采空区探测积累了宝贵经验。 [结论] 采空区的探测需根据所在煤矿的地形、地质特点及其地球物理特征选择物探技术,并且应进行多种方法的试验,发挥各方法的优点,才能得到符合实际的探测结果。
Abstract:
[Introduction] The coal-electricity integration mode is a development direction of coal-fired power plant in recent years, some planning power plant built in the coal mined area, the goaf is a big threat to the safety of power plant, and goaf detection is the basis of evaluation and treatment, so the goaf detection is a very important work. [Method] According to the characteristics of the goaf in Guizhou Dafang coal-fired power plant, the comprehensive geophysical exploration technology in coal mine goaf detection, overcome the single geophysical technology shortcomings. according to the electrical and elastic geological differences, using the method of high density resistivity method, transient electromagnetic method and seismic imaging method combining the development of goaf detection. [Result] Through comprehensive interpretation of geophysical technology, this work provide achieved good results, gives the goaf roadway and the spatial distribution and drilling verification, and accumulated experience for the subsequent detection of the integration of coal power plant in the goaf. [Conclusion] The detection of goaf need to choose the geophysical techniques which based on the topography, geological features, and geophysical characteristics of the coal mines, and a variety of methods should be tested to give full play to the advantages of each method, so as to obtain an actual detection result.
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