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MODERN TUNNELLING TECHNOLOGY 2012, Vol. 49 Issue (5) :123-127    DOI:
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Analysis of and Countermeasures against High Pressure Gushing Water in Fractured Fault Zones of Mountain Tunnels
China Railway Siyuan Survey and Design Group Co., Ltd
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Abstract It is unavoidable for long mountain tunnels to go through unfavorable geology, such as fractured rock and fault zones. Water inflow will likely occur if the area has well developed underground water, good hydraulic conductivity, and sufficient supply, whichi may seriously affect construction safety. A comprehensive analysis of the features and causes of gushing water at the Qingyunshan Tunnel located at the F9 high pressure water-rich fault zone was conducted. This paper discusses the comprehensive construction measures of advanced geological prediction, full face advanced pre-grouting, large pipe-roofs, strengthened water-resist linings, and wholly-covering water proofing systems, etc. These measures have efficiently controlled the loss of underground water caused by tunnel construction and have achieved their designed effect.
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Abstract： It is unavoidable for long mountain tunnels to go through unfavorable geology, such as fractured rock and fault zones. Water inflow will likely occur if the area has well developed underground water, good hydraulic conductivity, and sufficient supply, whichi may seriously affect construction safety. A comprehensive analysis of the features and causes of gushing water at the Qingyunshan Tunnel located at the F9 high pressure water-rich fault zone was conducted. This paper discusses the comprehensive construction measures of advanced geological prediction, full face advanced pre-grouting, large pipe-roofs, strengthened water-resist linings, and wholly-covering water proofing systems, etc. These measures have efficiently controlled the loss of underground water caused by tunnel construction and have achieved their designed effect.
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.Analysis of and Countermeasures against High Pressure Gushing Water in Fractured Fault Zones of Mountain Tunnels[J]  MODERN TUNNELLING TECHNOLOGY, 2012,V49(5): 123-127
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