【摘要】 介绍了抛石层上冲孔灌注桩成孔施工的特点 ,就其成孔施工的准备工作及技术要点进行了阐述 ,针对常见的漏浆、塌孔、涌泥涌砂等事故 ,提出了具体的预防处理措施。更多还原

【Abstract】 According to the construction features of cast-in-site bored pile in riprap layer the preparation work and technical skills are elaborated for hole building construction. As regards the common quality defects such as mud leakage, hole collapsing and quick sand practical treatment measures are proposed.更多还原