古运河浅埋暗挖超前支护效果影响因素分析

摘要

Ac cording to the engineering ge ological conditions of the shallow tunnel and consolidation grouting theory, analyzes the main cause of small duct grouting effect is not obvious in advance, and puts forward suggestions to improve the grouting effect.%根据浅埋暗挖区工程地质条件和固结注浆原理，分析了超前小导管注浆效果不明显的主要原因，并为改善注浆效果提出了建议。