钻孔桩施工中防止钻头泥包的办法

• 出 处: 探矿工程(岩土钻掘工程)
• 发表日期: 1995年02期
• 关键词: 钻头泥包 钻孔桩施工 钻头结构 反循环钻进 桩基质量 水化层 生产效率 粘土层 钻进参数 油基泥浆

钻孔桩施工中防止钻头泥包的办法钻孔灌注桩施工，其地层大多为第四系，由于粘土层的存在，施工中常常发生泥包钻头现象，不但影响了生产效率，造成工期延长，成本提高，而且对桩孔质量也有不良影响．从Ｂ前的研究资料看，钻头表面具有水化层是形成泥包的最主要因素，而要...

Bored pile construction to prevent the drill bit mud package bored pile construction, the strata are mostly Quaternary, due to the presence of clay layer, often occur during construction mud drill, not only affects the production efficiency, resulting in extended duration, Cost increases, but also adversely affect the quality of pile holes. From B before the research data, the drill bit surface with hydration layer is the most important factor in the formation of mud pack, but to ...