1.State Key Lab of Coal Resources and Safe Mining,China University of Mining and Technology (Beijing),Beijing ,China; 2.School of Geosciences and Surveying Engineering,China University of Mining and Technology (Beijing),Beijing ,China

为保证煤矿安全施工与开采,落实"有掘必探"原则,达到准确识别矿井灾害源、降低风险的目的,采用地质雷达方法进行超前探测具有探测精度高、施工方便及处理解释高效的特点。通过对山西某煤矿进风巷和回风巷地质雷达探测的实际应用,分析了地质雷达的工作原理、探测方法及数据处理流程。采用50、200 MHz两种频率雷达对掘进巷道掘进工作面面进行超前探测,准确探测了前方50 m范围内地质情况。通过与掘进段实际揭露进行验证,探测显示的陷落柱、破碎带及煤岩交界面均与实际对应较好。结果表明,矿井地质雷达超前探测具有较好的探测效果,可以为巷道掘进提供有力的技术支持,是矿井超前探测的高效、高精度探测新方法。

In order to ensure a safety construction and mining in the coal mine,to implement the principle of an “excavation with a exploration” and to reach a goal to accurately identify the mine disaster sources and the reduced rick,the geological radar method was applied to conduct the advanced detection with a high detection accuracy,convenient construction,high efficient interpretation and other features. With the actual application of the geological radar to detect a air income gateway and an air returning gateway in a coal mine of Shanxi Province,the paper had an analysis on the working principle,detection method and data processing flow of the geological radar. The geological radar with two frequencies of 50 MHz and 200 MHz was applied to the advanced detection at the gateway heading face and to accurately detect the geological condition within the front 50 m scope. With the verification conducted on the actual exposure of the heading section,the sink hole,broken zone and coal-rock interface displayed by the detection were well fitted with the actual condition. The study results showed that the mine geological radar could have obvious reaction on the sink hole,fault,broken zone and other hidden disaster sources and could realize the high efficient and high accurate detection of the mine. In comparison with the 50 MHz radar,the 200 MHz radar would have a high accuracy,but a short detection distance. Therefore with a comprehensive application of the two frequency antennas,a long detection distance and high accurate detection effect could provide a powerful technical support to the gateway heading and would be a new method of the mine advanced detection.

国家科技重大专项资助项目(2016ZX05066-001)；国家自然科学基金煤炭联合资助项目(U1261203)；