| 任喜荣,乔得福,全长恒.综合物探技术在地铁施工孤石探测中的应用研究[J].甘肃地质,2026,35(2):80-86 |
| 综合物探技术在地铁施工孤石探测中的应用研究 |
| APPLICATION OF COMPREHENSIVE GEOPHYSICAL PROSPECTING TECHNIQUES IN THE DETECTION OF ISOLATED STONES IN METRO CONSTRUCTION |
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| 中文关键词: 微动勘探 等值反磁通瞬变电磁 浅层地震勘探 花岗岩孤石 |
| 英文关键词:microtremor exploration equivalent counter magnetic flux TEM shallow seismic surveying earthquake impact granite boulder |
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| 中文摘要: |
| 本文通过综合物探方法在福州地铁F1线基岩凸起段左线、右线孤石勘察工作中的应用，体现了不同物探方法在地铁线路浅埋孤石探测中的应用效果，通过分析浅埋孤石具有的速度特征、电阻率特征等，对孤石的埋深及大小进行定性及半定量分析。 结果表明：（1）微动勘探对直径大于 1m的孤石，具有较好的分辨率；（2）等值反磁通瞬变电磁对于孤石直径大于2 m，埋深在10 ～ 100 m以内分辨率较高，且对高阻岩体有较好的识别能力；（3）地震映像对于0 ～ 30 m深度范围内的不同地质体具有较好的识别效果。 |
| 英文摘要: |
| This article demonstrates the application of various geophysical exploration methods in the survey of boulders in the left line and right line of the Fuzhou Metro Line F1, which reflects the effectiveness of different geophysical exploration methods in detecting shallow -buried boulders along the metro line. By analyzing the velocity and resistivity characteristics of shallow-buried boulders, qualitative and semi-quantitative analysis of the burial depth and size of boulders are conducted. The results show that: （1） microtremor exploration has good resolution for boulders with diameters greater than 1 m; （2） equivalent reverse flux transient electromagnetic method has high resolution for boulders with diameters greater than 2 m and burial depths ranging from 10 to 100 m, and has good identification ability for high-resistivity rock masses; （3） shallow seismic exploration has good identification effect for different geological bodies within a depth range of 0 ~ 30 m. |
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