冲击映像法在沉管隧道基础灌砂监测中的应用

摘要

在沉管隧道工程中，采用无损检测技术对基础灌砂施工效果实施实时、经济、有效的监测，是施工监测必须要解决的难题。本文结合南昌红谷隧道监测实例，系统地介绍了冲击映像法在基础灌砂施工中的应用情况，包括测线布设、数据采集、分析与评定方法、监测结果以及相关的结论与施工建议。监测结果表明：冲击映像法能够对基础灌砂效果进行实时有效地评判，是一种新的基础灌砂施工监测与灌砂效果评价方法。%The nondestructive monitoring of gravel filling effect of foundation of immersed tunnel timely,economically and effectively is a key problem to be solved.The impact imaging method used in gravel filling effect monitoring of foundation of Honggu Tunnel is systematically introduced in terms of monitoring line arrangement,data collection, analysis and assessment and suggestions.The monitoring results show that impact imaging method is feasible and effective in monitoring gravel filling effect of immersed tunnel foundation.