摘要
为探究爆破荷载下胶结充填体的裂纹扩展规律,论文基于高速摄影技术对强度为0.45MPa(水泥添加量为100kg/m^(3))的胶结充填体模型进行观测,得到该强度下胶结充填体的裂纹扩展长度为18cm,裂纹扩展持续时间为30.4ms,裂纹初始扩展速度为2.85×10^(3)cm/s。
In order to explore the crack propagation law of cementing backfill body under blasting load,the paper observes the cementing backfill body model with a strength of 0.45MPa(the cement addition is 100kg/m^(3))based on the high-speed photography technology.It is concluded that the crack propagation length of the cementing backfill body at this strength is 18cm,the crack propagation duration is 30.4ms,and the initial crack propagation speed is 2.85×10^(3)cm/s.
作者
喻圆圆
刘跃
隋显毅
吴霄
YU Yuan-yuan;LIU Yue;SUI Xian-yi;WU Xiao(Zhejiang Gaoneng Corporation of Blasting Engineering,Hangzhou 310012,China)
出处
《中小企业管理与科技》
2021年第17期175-176,共2页
Management & Technology of SME
关键词
爆破
胶结充填体
裂纹
高速摄影
blasting
cementing backfill body
crack
high-speed photography
