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.
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.
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
2019, Vol. 56 