| 姚荣辉.兰州市浅层地质地球物理探测应用试验研究[J].甘肃地质,2025,34(4):70-78 |
| 兰州市浅层地质地球物理探测应用试验研究 |
| EXPERIMENTAL STUDY ON THE APPLICATION OF SHALLOW GEOLOGICAL AND GEOPHYSICAL DETECTION IN LANZHOU |
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| DOI： |
| 中文关键词: 探地雷达法 地震映像法 等值反磁通瞬变电磁法 微动法 精细探测 兰州市 |
| 英文关键词:ground penetrating radar method seismic imaging method opposite coils transient electromagnetic method microtremor survey method detailed detection |
| 基金项目:甘肃省地矿局创新项目“精细物探新技术在城市地质中的应用研究”（2021CX11）。 |
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| 中文摘要: |
| 本研究探讨了地质雷达法、地震映像法、微动法、等值反磁通瞬变电磁法在城市地质勘探中的应用。地质雷达以其高分辨率和强抗干扰能力，被广泛用于城市道路病害检测和路基厚度检测。但是其探测深度相对较浅，需要丰富的经验进行数据解释。地震映像法在城市病害探测方面应用较多，具有高效、便捷、成本相对低的特点，尤其在与地质雷达相结合时，可以精细划分道路病害潜在隐患。 等值反磁通瞬变电磁法工作效率一般，成本较低，但在市区抗干扰能力弱。 微动勘探工作效率最低、成本最高，勘探深度与台阵直径相关，大台阵市区布局难，受环境干扰显著。 为解决这些问题，笔者针对兰州市各类地质条件，探究出了浅层地质地球物理探测的最佳方法组合。这项研究为城市地质探测工作提供了切实可行的指导建议与参考依据。 |
| 英文摘要: |
| Abstract：This study investigates the application of ground penetrating radar （GPR）, seismic imaging method, microtremor survey method, and opposite coils ransient electromagnetic method （OCTEM） in urban geological exploration. GPR, known for its high resolution and strong anti-interference capability, is widely used for detecting urban road hazards and measuring subgrade thickness. However, its detection depth is relatively shallow and requires extensive experience for data interpretation. The seismic imaging method is frequently applied in urban hazard detection, offering high efficiency, convenience, and relatively low cost. Particularly when combined with GPR, it enables detailed identification of potential road hazards. The OCTEM method offers moderate efficiency and low cost but exhibits weak anti-interference capabilities in urban areas. The microtremor survey method has the lowest efficiency and highest cost; its exploration depth is related to the array diameter, and deploying large arrays in urban settings is challenging due to significant environmental interference. To address these issues, the authors explored the optimal combination of shallow geological and geophysical detection methods tailored to various geological conditions in Lanzhou City. This research provides practical guidance and references for urban geological detection work. |
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