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介绍了置换注浆技术在中厚以下流砂层，乃至厚层流砂中的应用机理和适用条件、参数选取、施工工艺、关键技术突破和注浆效果。
The application mechanism, application conditions, parameter selection, construction technology, key technical breakthroughs and grouting effects of displacement grouting technology in middle and thick sandstorms and even in thick sandstones are introduced.