微动H/V谱比法在城市浅层地质勘查与探测中的应用
The Application of HVSR in the Shallow Geological Exploration and Detection of Urban
曹鹏涛 1裴洪军 1周鹏 2韦义师 1张家声3
作者信息
- 1. 深圳市水务规划设计院股份有限公司,广东深圳 518022
- 2. 深圳市新通物探工程有限公司,广东深圳,518109
- 3. 中国地质科学院地球物理地球化学勘查研究所,河北廊坊 065000
- 折叠
摘要
近年来在城市地下空间开发利用过程中,如何克服常规地球物理探测方法在场地条件受限与强干扰情况下,勘查与探测效果较差的难题.微动H/V谱比探测方法具有场地适应能力强、抗干扰、施工快捷方便的优点,是一种城市地球物探测方法补充手段.为了探索该方法在城市浅层地质勘查与地下异常体探测中的有效性及其特性,本文开展了地下不同岩土层结构以及地下异常体的H/V谱比法正演模拟,分析总结了不同岩土层结构中地下异常体的H/V谱比变化规律.在正演模拟的基础上,通过实测微动H/V谱比法物探成果与地质资料验证对比,说明了微动H/V谱比法在城市浅层地质勘查与探测中具有一定的勘查效果,尤其对地下土层中空洞、孤石、疏松体、富水区域等地下病害体具有较强的识别能力,为城市强背景噪声环境下浅层地质勘查与地下病害体探测提供了一种快速、准确的补充解决方案.
Abstract
In recent years,in the process of urban underground space development and utili-zation,how to overcome the problem of poor exploration and detection results caused by conventional geophysical exploration methods under limited site conditions and strong inter-ference is calling for immediate attention.The micro motion H/V spectral ratio detection method has the advantages of strong site adaptability,anti-interference,fast and convenient construction,and is a supplementary means of urban geophysical detection.In order to ex-plore the effectiveness and characteristics of this method in urban shallow geological explora-tion and underground anomaly detection,this paper carried out forward simulation of H/V spectral ratio method for different underground rock and soil layer structures and under-ground anomaly bodies,analyzed and summarized the variation patterns of H/V spectral ra-tio of underground anomaly bodies in different rock and soil layer structures.On the basis of forward simulation,the comparison between the physical exploration results of the measured micro motion H/V spectral ratio method and geological data verification shows that the micro motion H/V spectral ratio method has a certain exploration effect in urban shallow geological exploration and detection,especially in identifying underground disease bodies such as voids,solitary stones,loose bodies,and water rich areas in the underground soil layer,Which pro-vides a fast and accurate supplementary solution for shallow geological exploration and un-derground disease detection in urban environments with strong background noise.
关键词
H/V谱比法/微动探测/工程探测Key words
HVSR/microtremor measurements/engineering detection引用本文复制引用
基金项目
深圳市水务规划设计院股份有限公司科技项目(B202207)
出版年
2024
NETL
NSTL
万方数据