JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2012, Vol. 42 ›› Issue (1): 81-86.

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The precursor law of inrush of clay and water  in a high-risk karst tunnel and its application

XIE Dong-sheng1,2, SHI Shao-shuai3, CHEN Shi-lin4, LI Li-ping3,5, ZHOU Zong-qing3, HU Cong3   

  1. 1. Engineering Institute of Engineering Corps, PLA University of Science and Technology, Nanjing 210007, China;
    2. The 4th Engineering Design & Research Institute General Staff, PLA, Beijing 100036, China;
    3. Geotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, China;
    4. Engineering Quality Supervision Station Of Navy, Beijing 100161, China;
    5. State Key Laboratory of HydrologyWater Resources and Hydraulic Engineering,
    Nanjing Hydraulic Research Institute, Nanjing 210098, China
  • Received:2011-09-21 Online:2012-02-20 Published:2011-09-21

Abstract:

Tunnel inrush of clay and water,which has become the key technology that needs to be solved for the construction of high risk karst tunnels, brings huge security risks and economic losses. On the basis of many examples of karst water inrush and sudden mud of tunnels, ground water, petrofabric, geological structure surface structures, attitude of rocks, deposition of ancient erosion surface, topography and geomorphology and rainfall were the main geological influence factors on water inrush and sudden mud. The response characteristics of karst water and unfavorable geological condition in the geophysical field have been researched. That is the particular type of precursor signal information when the seismic waves and electromagnetic waves encounter the karst water and unfavorable geological condition in its propagation process. The response characteristics of the karst aquifer and unfavorable geological body in the geophysical information field were interpreted. The precursor signal information that led to the disaster was recognized. This was successfully applied in the tunnel construction and was significant in the prediction of water inrush and sudden mud of tunnels.

Key words: karst tunnel, inrush of clay and water, influencing factors, the precursory of geological, geophysical field, precursor law

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