摘要
为了避免钻孔桩在钻进中出现坍孔，应在钻孔前对水头压力、护壁泥浆的性能、钻进土层的物理性能指标进行验算和分析。文中提出了钻进中预防出现坍孔的分析方法，并结合工程实例，进行了说明。
In order to prevent the hole collapse during the hole drilling, this paper pointed out that before drilling.hydraulic head, the properties of mud pulp of protective wall and physical properties of soil must be calculated and analysed. The method of prevention of collapse in the process of drilling is pat forward and described with the practical engineering example.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1994年第6期94-99,共6页
Journal of Northeast Forestry University
关键词
正循环
钻孔桩
预防
坍孔
Normal circulation
Drilled pile
Prevention
Hole collapse
