补连塔矿12406工作面浅部地层结构地质雷达探测研究

Study on Geological Radar Detection of Shallow Strata Structure in No.12406 Coal Mining Face of Bulianta Mine

利用地质雷达对浅地表地层进行精细探测的优势,对补连塔矿12406工作面进行地质雷达探测,根据雷达相将该研究区地层分为5种不同类型。雷达探测结果表明:浅地表松散层厚度差异大;地质雷达在测线1200～1500m范围的砂层沉积区探测效果良好,有效信号可达10m,可识别粗砂、中砂、细砂分界面;而在有粘土(基岩风化产物)和砾石层的区域,雷达探测深度较浅;分别与粘土和砾石层深度对应,深度均小于10m,有些仅厚几十厘米。结合钻孔资料在雷达探测剖面上划分了该工作面浅部地层的详细地层结构,得到了沿测线的沉积结构图,可为矿区生态复垦提供基础资料。

With the advantages of the geological radar applied to the detail detection on the shallow ground strata, the geological radar detection was conducted on No. 12406 coal mining face of Bulianta Mine and the strata in the study area were divided into five different types according to the radar phase. The radar detection results showed that the thickness difference of the shallow ground loose stratum was high, the geological radar could have a good detection effect in the sand sedimentary zone within a survey line of 1200 -1500m scope, the effective signal could reach 10 m and could distinguish the interfaces of the coarse sand, medium sand and fine sand. But in the regional with clay （ weathered products of base rock） and gravel, the detection depth of the radar was shallow. In corresponding to the depth of the clay and gravel, the detection depth of the radar was all less than 10m and some detection depth was only dozens of centimeters. In combination with the borehole information, detail strata structures of the shallow strata in the coal mining face were divided on the cross section of the radar detection. The sedimentary structure drawings along the survey line were obtained and could provide the basic information to the ecological reclamation of the mining area.