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钻孔灌注桩作为灌注桩施工技术的典型,在水利工程中的应用较为广泛。一般情况下,钻孔灌注桩工作多在水下完成,施工过程难以控制,也不可能挖开水下地基或者抽干水而进行检验。因此,如何控制施工过程以及关键技术,对确保整个水利工程质量至关重要。以下结合笔者实际工作经验,就灌注桩技术在水利工程中的应用问题,谈几点体会。一、钻孔灌注桩施工钻孔灌注桩施工基本程序是:施工准备→钻机就位→护筒埋设→钻头和孔口管施工→护壁泥浆→混凝土浇筑→钢筋笼
As a typical construction technology of bored pile, bored pile is widely used in hydraulic engineering. Under normal circumstances, the bored pile mostly under water to complete the construction process is difficult to control, it is impossible to dig underwater foundation or pumping dry water for testing. Therefore, how to control the construction process and the key technologies are crucial to ensure the quality of the entire water project. The following combination of the author’s actual work experience, on the pile filling technology in water conservancy projects, talk about some experience. First, the basic procedures for construction of cast-in-place bored pile Construction of the basic procedures are: construction preparation → rig in place → buried casing → drill and orifice tube construction → protective wall mud → concrete pouring → reinforced cage