弹道学报2018，Vol.30Issue(2)：54-59,6.DOI:10.12115/j.issn.1004-499X(2018)02-10
球形装药内爆岩体破坏效应的准静态模型
Quasi-static Model for Rock Damage Caused by Closed Explosion of Spherical Charge
刘先斌 1蒋志刚 1詹昊雯1
作者信息
- 1. 国防科学技术大学 基础教育学院,湖南 长沙410072
- 折叠
摘要
Abstract
Aiming at the closed explosion in rock,a model for predicting breakage zones caused by spheri-cal charges was established. The radii of explosion cavity,comminuted region and cracked region in rock were obtained based on the elastic-comminuted-cracked response model,and the adiabatic relation of the detonation gas before and after explosion was considered. The Hoek-Brown criterion was used to describe the material in comminuted region. The blasting cavity results from the proposed model agree well with the experiment in references with relative error range from -5.8% to 5.5%. The results of quasi-static model based on the Mohr-Coulomb criterion are smaller, and the formula of cylindrical blasting cavity is not applicable to the spherical blasting cavity. As the value of dimensionless coefficient m in the Hoek-Brown criterion increases,the size of blasting cavity decreases. The predicted results in radius of comminuted region and crack region are reasonable and less affected by m.关键词
岩石介质/防护工程/准静态理论/爆腔Key words
rock medium/protective engineering/theory of quasi-static/blasting cavity分类
数理科学引用本文复制引用
刘先斌,蒋志刚,詹昊雯..球形装药内爆岩体破坏效应的准静态模型[J].弹道学报,2018,30(2):54-59,6.
