隧道工程施工中高压水平旋喷桩超前支护技术的应用研究

Research on Application of Advanced Support Technology of High Pressure Horizontal Jet Grouting Pile in Tunnel Construction

针对隧道工程施工过程中富含地下水、围岩稳定性差等导致地表沉降、隧道变形等问题,使用高压水平旋喷桩超前支护技术。此支护的主要特点为可控性强、均匀性强、强度高,将实际工程为例,对高压水平旋喷桩超前支护的施工方式分析。结果表示,使用高压水平旋喷桩超前支护技术,能够避免隧道施工过程中地表沉降的问题。

In order to deal with the problems of surface settlement and tunnel deformation caused by rich groundwater and poor stability of surrounding rock during the construction of tunnel engineering,the advanced support technology of high-pressure horizontal jet grouting piles is used.The main features of this support are strong controllability,uniformity,and high strength.Taking the actual project as an example,the construction method of the high-pressure horizontal jet-grouting pile advanced support is analyzed.The results show that the use of high-pressure horizontal jet-grouting pile advanced support technology can avoid the problem of surface settlement during tunnel construction.