Application of Ground Freezing Method to Repai r Project of River Bottom Water Taking Tunnel
HAO Ming-qiang
SHI Zhi-ming
Abstract：During a construction of a river bottom shield water taking tunnel for Changshu Power Ge-neration Plant ,a backfill ground freezing method was applied to form a temporary freezing sealing wall after a water inrush and sand burst accident occurred. Then the standing water in the tunnel was drained and a permanent sealing wall was build to provide a protection to the following safety and suc-cessful construction of the tunnel project. The practices showed that in comparison with the application of a concrete pouring in water method in the tunnel to build a temporary sealing wall ,under the com-plicated geological condition ,the application of the backfill ground freezing method to build the tem-porary sealing wall could effectively prevent a water inrush and sand burst accident occurred ,would have a less damage to the tunnel structure ,a less influence to the neighboring buildings and would have no person required to work in the tunnel with standing water. Thus the backfill ground freezing method could have a high control and high safety with a promotion and application value.
Keywords：ground freezing methodriver bottom tunnelshieldtemporary sealing wallrepair
Publication Date：2014-06-06
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 12-16 )