地球物理学进展 ›› 2018, Vol. 33 ›› Issue (5): 2126-2133.doi: 10.6038/pg2018BB0422

• 应用地球物理学Ⅱ(海洋、工程、环境、仪器等) • 上一篇    下一篇

基于航空瞬变电磁法的宝清地区含水体分布特征研究

何怡原1(),梁盛军1,连晟2   

  1. 1. 中国国土资源航空物探遥感中心,北京 100083
    2. 中国地质调查局水文地质环境地质调查中心,河北保定 071051
  • 收稿日期:2017-12-13 修回日期:2018-08-13 出版日期:2018-10-20 发布日期:2019-01-11
  • 作者简介:何怡原,女,1989年生,四川绵阳人,工程师,理学博士,主要从事地震勘探、航空电磁勘探理论及应用研究.
  • 基金资助:
    中国地质调查“秦岭及天山等重点成矿区带航空物探调查”(121201203000160006);中国地质调查“渤海海岸带航空物探遥感调查及应用”(121201203000160016)

Investigation of water distribution in Baoqing area using airborne transient electromagnetic technique

HE Yi-Yuan1(),LIANG Sheng-Jun1,LIAN Sheng2   

  1. 1. Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing 10083, China
    2. Center for Hydrogeology and Environmental Geology, CGS, Hebei Baoding 071051, China
  • Received:2017-12-13 Revised:2018-08-13 Online:2018-10-20 Published:2019-01-11

摘要:

航空瞬变电磁法具有数据采集速度快、分辨率高、可大面积覆盖等优势,是一种高效的电磁勘查手段.黑龙江宝清地区第四系孔隙含水层亚系统分布范围广泛,补、径、排条件良好,是三江平原内水文地质研究价值较高的含水层亚系统.本文旨在应用航空瞬变电磁技术调查宝清地区含水体的分布,为水文地质调查提供新的技术参考.文中采用电阻率-深度快速成像方法研究测区电性结构,参考地面钻探、物探工作结果,进行岩性推断并预测地下含水体分布,建立三维地质模型,计算测区第四系底面深度.研究表明:航空瞬变电磁技术可以详细反映第四系内地层的电性差异,对含水体的响应明显,在水文地质勘查方面有很大的应用前景.

关键词: 航空瞬变电磁法, 电性结构, 含水体分布, 三维地质模型, 第四系底面深度

Abstract:

With advantages of fast data acquisition, high resolution and large coverage, airborne transient electromagnetic technique is an efficient electromagnetic exploration means. The porous aquifer subsystem of Quaternary, which is widely distributed in Baoqing, Heilongjiang, has stable recharge, runoff and discharge conditions, thus it has relatively high academic value among aquifer systems in Sanjiang Plain. This paper aims to apply airborne transient electromagnetic technique to investigate water distribution in Baoqing area, and offer technical reference to hydrogeological research. In this paper, resistivity-depth imaging method is adopted to explore regional electrical structure, thereby inferring rock formation and water distribution with the reference of ground drilling and geophysical work. Thus, a 3D geological model could be built and depth of Quaternary bottom is estimated. This research indicates that airborne transient electromagnetic method can reveal electrical difference of Quaternary layers in detail, and has significant response to water body, so it has large application prospect in hydrogeological survey.

Key words: airborne transient electromagnetic method, electrical structure, groundwater distribution, 3D geological model, depth of Quaternary bottom

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