摘要
运用水射流理论与土力学理论,建立了水射流土层扩孔方程.基于室内模拟实验, 研究了射流参数与扩孔效果的关系,并验证了水射流土层扩孔方程的正确性.结果表明,增大射流流量比增大其压力对扩孔效果的提高更有效,实验参数βs主要与扩孔时钻杆的运动有关.
The equation of soil bore enlarging with water jet was established based on the water jet theory and soil mechanical theory. Through indoor simulation test, the relationship between water jet parameters and bore-enlarging effect was studied. The results showed that the equation of soil bore enlarging with water jet is correct. Increasing the water jet flow quantity has more obvious effect on bore enlarging than increasing the water jet pressure. The experimental parameter βs is mainly related to the lifting speed and the rotational speed of the drill pipe.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2005年第3期268-271,共4页
Journal of University of Science and Technology Beijing
关键词
淹没水射流
扩孔
方程
土层
submerged water jet
bore enlarging
equation
soil
