微动谱比法在构造发育地区试验效果的应用研究  

Research on effect of micro-seismic&spectrum ratio method application to the structure-developed areas

作　　者：闫国钰 韩艳军[1] 穆建强 YAN Guoyu;HAN Yanjun;MU Jianqiang(Geophysical Exploration Academy of China Metallurgical Geology Bureau,Baoding 071000,Hebei,China)

机构地区：[1]中国冶金地质总局地球物理勘查院,河北保定071051

出　　处：《地质找矿论丛》2023年第1期118-122,共5页Contributions to Geology and Mineral Resources Research

摘　　要：微动-谱比探测方法的联合应用可以克服传统物探方法在山区、植被茂密地区或地质情况复杂地区勘探效果不佳的缺陷,微动-谱比探测法具有地形适应能力强、施工快捷安全并具备一定抗干扰能力的优点,成为山区物探技术的重要补充手段。文章选择东南沿海某构造发育地区开展微动-谱比法的试验工作,布置微动测线2条,谱比法测线1条,分别拾取频散曲线和计算H/V谱曲线,获得横波速度剖面和微动-谱比法联合反演剖面。通过与试验区地质资料和大功率电法资料对比,证实微动谱比法技术在山区浅层(0~120 m)具备一定的勘查效果,尤其对构造、侵入岩体反应灵敏,可区分大套地层,所得横波速度信息可直接为工程建设提供弹性参数,为在山区复杂地形地质条件下确定构造、侵入岩体和地层分布情况提供了快速准确的解决方案。The integrated micro-seismic-spectrum ratio method is superior to the traditional geophysical method in prospecting in mountains,areas with dense vegetation and complex geology.It is adapted to various terrains and fast and safely operated with certain degree of anti-interference.And it is now an important supplementary method for geophysical techniques in mountainous areas.A structure-developed area near ocean in the southeast China is selected to test the micro-seismic-spectrum ratio method and 2 micro-seismic survey lines and 1 spectrum ratio survey line laid out and the dispersion curve and H/V spectrum curve picked up to draw shear wave velocity profile and the integrated micro-seismic-spectrum ratio inversion profile.Comparison of the integrated micro-seismic-spectrum ratio data with geological and high power electric data of the test area proves that the integrated method is certainly effective for shallow prospecting(0~120 m)in mountainous areas,especially sensitive to structure and intrusive bodies.Thick strata sequences can be distinguished with the data and the shear wave velocity data can directly provide elastic parameters for project construction,especially for fast and accurate solution to determine structure,intrusive body and strata distribution of mountainous areas with multiply variable relief.

关 键 词：微动探测 谱比法 联合反演 构造发育区 

分 类 号：P631.3[天文地球—地质矿产勘探] P624[天文地球—地质学]