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MODERN TUNNELLING TECHNOLOGY 2019, Vol. 56 Issue (4) :38-42    DOI:
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Geological Survey on Breakthrough Section of the Large-section Karst Tunnel by Radio Wave Penetration Method
(China Coal Technology Engineering Group Chongqing Research Institute, Chongqing 400039)
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Abstract It has high risks for the construction of breakthrough section of a large-section karst tunnel, and water burst, mud burst and collapse are often encountered. Accurate geological survey is one of the key measures to realize safe and efficient breakthrough of a tunnel, however it is difficult to meet the accuracy requirement of exploration by traditional geophysical prospecting of reflective seismic wave or electromagnetic wave. A penetration prospecting of geological condition of breakthrough section of a large-section karst tunnel was conducted by radio wave penetration method considering the high reliability of penetration geophysical prospecting and spatial characteristics of the breakthrough section of the tunnel, a small dot pitch based radio wave penetration prospecting for the large-section tunnel was proposed and successfully applied in the construction of Huayingshan tunnel, and good results were obtained and no water burst occured.
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LI Hao
Keywords： Radio wave penetration method   Large-section karst tunnel   Breakthrough section   Geological condi? tion   Penetration prospecting   Case application     
Abstract： It has high risks for the construction of breakthrough section of a large-section karst tunnel, and water burst, mud burst and collapse are often encountered. Accurate geological survey is one of the key measures to realize safe and efficient breakthrough of a tunnel, however it is difficult to meet the accuracy requirement of exploration by traditional geophysical prospecting of reflective seismic wave or electromagnetic wave. A penetration prospecting of geological condition of breakthrough section of a large-section karst tunnel was conducted by radio wave penetration method considering the high reliability of penetration geophysical prospecting and spatial characteristics of the breakthrough section of the tunnel, a small dot pitch based radio wave penetration prospecting for the large-section tunnel was proposed and successfully applied in the construction of Huayingshan tunnel, and good results were obtained and no water burst occured.
Keywords： Radio wave penetration method,   Large-section karst tunnel,   Breakthrough section,   Geological condi? tion,   Penetration prospecting,   Case application     
Cite this article:   
LI Hao .Geological Survey on Breakthrough Section of the Large-section Karst Tunnel by Radio Wave Penetration Method[J]  MODERN TUNNELLING TECHNOLOGY, 2019,V56(4): 38-42
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http://www.xdsdjs.com/EN/      或     http://www.xdsdjs.com/EN/Y2019/V56/I4/38
　
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