土氡测量在城市断层探测中的应用  

APPLICATION OF SOIL RADON MEASUREMENT IN URBAN FAULT SURVEYING

作　　者：王秋良[1,2] 王恒希[1] 陈圆圆[1] 宋琛[1] 余敏[1] 

机构地区：[1]中国地震局地震研究所,武汉430071 [2]中国地质大学工程学院,武汉430074

出　　处：《大地测量与地球动力学》2010年第1期38-42,共5页Journal of Geodesy and Geodynamics

基　　金：中国地震局地震研究所所长基金(IS200826056);深圳市典型地质灾害点的监测与示范研究项目

摘　　要：对深圳市北东向横岗-罗湖断裂和北北西向大芬断裂的土壤氡射气(Rn)含量的测量结果表明,两条测线的氡异常曲线均为双峰型,主峰异常值与背景值的比值分别为3.85和3.25。结合野外地质露头剖面的对比分析,两条测线氡气主峰、次峰异常值对确定断层位置、规模、走向、倾向及其活动性的强弱和活动年代都能够提供一定的参考依据。土氡测量可以作为城市活动断层探测的一种有效手段。The radon contents of soils in NE ward hen City, are measured. It is shown that the two radon Henggang-Luohu Fault and NNW ward Dafen Fault, Shenzanomaly curves of lines appear to double peak, the radio of main peak and secondary peak to background value are 3.85 and 3.25 respectively. Compared with outcrop sections in field, the anomaly values of radon of main and secondary peaks provide the references basis for location, scale, strike, dip, magnitude and active time of the faults, so it is proved that the soil radon measurement can act as an effective method in urban active fault surveying.

关 键 词：土氡测量 氡异常 断层探测 背景值 异常值 

分 类 号：P629[天文地球—地质矿产勘探]