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An application of CSAMT for detecting weak geological structures near the deeply buried long tunnel of the Shijiazhuang-Taiyuan passenger railway line in the Taihang Mountains
  • 2024-01-08
元数据
名   称 An application of CSAMT for detecting weak geological structures near the deeply buried long tunnel of the Shijiazhuang-Taiyuan passenger railway line in the Taihang Mountains
科技资源标识 CSTR:11738.14.NCDC.XDA14.PP6173.2024
DOI 10.1016/j.enggeo.2020.105517
数据共享方式 开放下载
摘   要 The Shijiazhuang-Taiyuan (ShiTai) high-speed railway line is designed to cross the Taihang Mountains. The line will
include the construction of a 27.85 km long tunnel with a maximum depth of 450 m. The Taihang Mountain Tunnel is
the key to the successful construction of the railway. The geological structure of the tunnel is highly complex and the
lithology changes dramatically throughout. Fault zones, karst, and groundwater ingress are the main geological engineering problems for the tunnel construction. However, conventional geophysical methods are not effective for detecting these geological structures in a region with such a complex terrain. Therefore, the controlled source audiofrequency magnetotellurics (CSAMT) method was used to effectively characterize the resistivity distribution of the
underground rock. This technique is highly sensitive to low resistivity geological structures, such as fault zones, and it is
effective for studying the geological engineering conditions of the tunnel. Various corrections, designed denoising, and
inversion methods are used in CSAMT data processing to obtain the resistivity profile of the entire tunnel. Based on the
resistivity results and existing core information, the underground lithological distribution is inferred. The location of the
fault zone is determined and the distribution of dangerous geological bodies is delineated. The interpretation of the
CSAMT results is verified by boreholes and related geological information. These results are important for understanding the subsurface geological engineering conditions and have provided stability, safety, and cost evaluation
support for the construction of a long deeply buried tunnel in Taihang Mountains
学科分类
170.20
关键词
Deeply buried long tunnel Geophysical exploration Electromagnetic sounding CSAMT Resistivity section
作者 底青云,付长民,安志国,王若,王光杰,王妙月,梁鹏飞
数据量 4.8 MiB
论文类型： journal
论文网址： https://doi.org/10.1016/j.enggeo.2020.105517
期刊名称： Engineering Geology
出版时间： 2020-04-01
引用和标注
数据引用
底青云,付长民,安志国,王若,王光杰,王妙月,梁鹏飞. An application of CSAMT for detecting weak geological structures near the deeply buried long tunnel of the Shijiazhuang-Taiyuan passenger railway line in the Taihang Mountains. 国家冰川冻土沙漠科学数据中心(http://www.ncdc.ac.cn), 2024. https://cstr.cn/CSTR:11738.14.NCDC.XDA14.PP6173.2024.
底青云,付长民,安志国,王若,王光杰,王妙月,梁鹏飞. An application of CSAMT for detecting weak geological structures near the deeply buried long tunnel of the Shijiazhuang-Taiyuan passenger railway line in the Taihang Mountains. 国家冰川冻土沙漠科学数据中心(http://www.ncdc.ac.cn), 2024. https://www.doi.org/10.1016/j.enggeo.2020.105517.
许可协议
知识共享许可协议   本作品采用 知识共享署名 4.0 国际许可协议进行许可。
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