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Full-decay induced polarization multi-parameter tomography method for tunnel water inrush ahead prospecting: A case study
Tunnelling and Underground Space Technology ( IF 6.7 ) Pub Date : 2024-01-18 , DOI: 10.1016/j.tust.2024.105589
Lichao Nie , Zhicheng Song , Wei Zhou , Zhiqiang Li , Xuecai Du , Liang Ma

The geological structure, hydrology, and geomorphology of the Gaoligongshan tunnel are very complex due to its location in the zone where the Indian and Eurasian plates collide. Therefore, several water inrushes and jams were encountered during the construction process using TBMs. The application of geological prospecting can effectively reduce the occurrence of geological hazards. However, locating adverse structures relying on one geophysical parameter is prone to bias. In order to ensure the safety of tunnel construction while ensuring construction efficiency, a multi-parameter inversion imaging method based on full-decay induced polarization (IP) is proposed. Combined with geological analyses, the proposed method can image multiple geophysical parameters and determine the size, scale and area of water-bearing structures from a single test. With proposed method, the Gaoligongshan tunnel was passed through the detection section successfully. Herein, we present a case study that provides a valuable reference for the speed regulation of TBM construction under similar geological conditions.



中文翻译:

隧道突水超前勘探全衰减激发极化多参数层析成像方法实例研究

高黎贡山隧道地处印度板块与欧亚板块碰撞地带,地质结构、水文地貌十分复杂因此,TBM施工过程中多次出现突水、堵塞等情况地质勘探的应用可以有效减少地质灾害的发生。然而,依靠一种地球物理参数来定位不利结构很容易出现偏差。为了在保证施工效率的同时保证隧道施工安全,提出了一种基于全衰减激发极化(IP)的多参数反演成像方法。结合地质分析,该方法可以对多个地球物理参数进行成像,并通过一次测试确定含水结构的尺寸、规模和面积。采用该方法,高黎贡山隧道成功通过探测断面。在此,我们提供一个案例研究,为类似地质条件下TBM施工的调速提供有价值的参考。

更新日期:2024-01-20
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