微动勘探技术在胶东某金矿采空区探测中的应用研究

Research on the Application of Microtremor Survey Technology in Goafs Detection of a Gold Mine in Jiaodong Region

摘要: 采空区作为诱发重特大事故的重要危险源，其精准探测对人民生命财产安全有着重要意义，然而金矿采空区的识别难度较高，金矿采空区的精准探测一直是金矿安全生产的关键内容之一。近些年来，微动勘探技术凭借其抗干扰能力强、无需人工震源、便捷且环保等众多优势，在地热勘查、隐伏构造勘查、采空区勘查等诸多领域备受关注。本文采用微动勘探技术对胶东某金矿采空区进行探测，通过天然微动信号对地下采空区进行成像分析，结合已有地质资料在横波速度剖面圈画出了9处低速异常体，对其中2处异常体进行了钻探验证，钻探揭示的采空区与横波低速异常体空间位置吻合度高，证明了微动勘探技术在金矿采空区探测上的良好效果。

Abstract: Goafs, being critical hazards that may trigger severe accidents, require precise detection to safeguard lives and property. However, identifying gold mine goafs remains particularly challenging, making their accurate detection a key aspect of mine safety management. In recent years, microtremor survey technology has gained significant attention in geothermal exploration, concealed structure detection, goaf surveys, and other fields due to its strong anti-interference capability, independence from artificial seismic sources, efficiency, and environmental friendliness. This study employs microtremor technology to investigate goafs in a gold mine within the Jiaodong region. By analyzing natural microtremor signals for subsurface goaf imaging, nine low-velocity anomalies were delineated on S-wave velocity profiles in conjunction with existing geological data. Two anomalies were verified by drilling, revealing high spatial correlation between the detected goafs and S-wave low-velocity anomalies. These results demonstrate the efficacy of microtremor surveys in gold mine goaf detection.