综合物探技术在潍烟线金矿采空区勘察中的应用

为查明潍烟线灵山蒋家金矿采空区分布,针对测区内采空区空间分布复杂、埋深变化大,以及存在高压线、道路干扰等情况,选用测氡法、重力法、地震映像法以及天然源音频大地电磁法开展工作。测氡法和重力法可以发挥其抗干扰能力强,数据可靠等优势,为采空区平面范围的圈定提供依据;地震映像法可以进一步验证采空区范围;天然源大地电磁法可以满足采空区的勘察深度要求。研究表明,通过4种物探方法的优势互补、联合应用,精确划定了采空区的范围,研究成果对类似铁路采空区勘察研究具有一定的借鉴意义。

Application of Comprehensive Geophysical Technology in Railway Gold Mine Goaf Exploration Based on Weifang-Yantai Passenger Line

In order to find out the distribution of goaf in Lingshanjiangjia Gold Mine of Weifang-Yantai Passenger Line,radon measurement method,gravity method,seismic imaging method and natural source audio frequency magnetotellurics method were adopted.The variation of buried depth,and the interference of high voltage lines and roads in the survey area were taken into consideration.The radon measurement method and gravity method had advantages in terms of strong anti-interference ability and reliable data,which provided a basis for the delineation of the goaf plane range.The scope of goaf was further verified by seismic imaging method.The natural source magnetotellurics method met requirements of prospecting depth in the goaf.The research shows that the scope of goaf is accurately delineated through the complementary advantages and the application of the four geophysical exploration methods,and provides reference for the prospecting and research of similar railway goaf.