小导管预注浆技术

Small Duct Pre grouting Construction Techniques

摘要:

在围岩自稳能力差或无自稳能力地层中开挖隧道及地下工程，提出了预注浆机理与分类、参数选择、材料选择与配比等关键问题进行了综述，展示了注浆在工程中应用的广阔前景。

Abstract:

This paper discusses mechanism and classification, parameter selection, material selection and mixture ratio of pre-grouting during tunnelling in less or no self stable surrounding rock and presents the application prospect of grouting in engineering.