本文较详细地介绍了渝怀铁路回梁山隧道毛坝向斜高压富水区DK354+255～+280深埋充填粉质粘性土溶洞的注浆加固技术及其具体施工工艺过程，有效地降低了隧道工程中发生串浆的频率，能确保注浆加固效果。是一种值得推广的方法.

This paper describes the strengthening technique by grouting and concrete construction process for deep burying karst cave with filling silty clay of Yuanliang Mountain Tunnel on Chongqing-Huaihua, The frequency of crossgrout occurring in tunnel construction can be reduced and the strengthening feeect by grouting can be ensured by adapting this technique. The technique is worth being widely adapted.