摘要
通过对含层间充填土的混凝土模型爆破过程的高速摄像实验,观测爆破作用夹层充填土运动过程,发现爆炸作用下层间充填土的运动规律:距炮孔中心2～4 cm之后的层间充填土的运动速度可以分为3个阶段,即速度迅速降低、速度基本稳定和速度急速降至0;层间充填土运动速度随着药量的增加而增大,且药量大的层间充填土的速度降低段较宽、速度基本稳定段较窄,这为进一步研究爆破对岩体夹层充填物的作用机理及其稳定性研究提供了依据。
Through the high-speed videography for the blasting process of concrete model containing layered filling solids, the motion process of layered filling solids under the action of blasting was observed and the motion law was discovered. The motion velocity variation of layered filling solids 2 - 4 cm away from the blast hole center can be divided into three sections, namely rapid decrease of velocity, basically stabilization of velocity and rapid decrease to zero. The motion velocity of layered filling solids increases with the increase of explosive amount. At a high explosive amount, the velocity decrease section is wider and the velocity stability section, is narrower. The results provide a basis for a further study of the blasting effect on the layered filling solids in rockmass and the rockmass stability.
出处
《金属矿山》
CAS
北大核心
2008年第10期32-34,63,共4页
Metal Mine
基金
国家自然科学基金项目(编号:50574076)
关键词
高速摄像
层间充填土
位移
速度
High-speed videography, Layered filling solids, Displacement, Velocity
