科技创新与应用2024，Vol.14Issue(5)：73-76,4.DOI:10.19981/j.CN23-1581/G3.2024.05.018
动静组合加载下岩石-充填体破坏特征研究
朱晓玺 1孙文诚 2杨曦3
作者信息
- 1. 唐山三友矿山有限公司,河北 唐山 063000
- 2. 承德广兴矿业有限责任公司,河北 承德 067000
- 3. 华北理工大学 矿业工程学院,河北 唐山 063210||河北省矿业开发与安全技术实验室,河北 唐山 063210
- 折叠
摘要
Abstract
When mining by filling method,blasting disturbance is bound to cause varying degrees of damage to the filling body.In order to better protect the stability of the filling body,it is necessary to study its failure mode and clarify its damage degree.Based on the actual situation of the mine,the combined specimen of rock and filling body was prepared,and the dynamic and static combined loading experiment was carried out.The results of the study show that the application or non-application of axial load leads to a change in the damage pattern of rock-fill specimens.When no axial pressure is applied,the specimen is more prone to tensile damage.When certain axial pressure is applied,the damage mode of the filler part of the specimen changes from tensile damage to compression-shear damage due to the end effect.This further results in a change in the degree of damage of the backfill,which gradually decreases with the increase of axial pressure.Tensile damage causes more severe damage to the backfill,and compression shear damage causes less damage to the backfill compared to tensile damage.关键词
岩石-充填体/动静载荷/破坏模式/平均粒径/分形维数/破坏程度Key words
rock-filling body/dynamic and static load/failure mode/average particle size/fractal dimension/failure degree分类
矿业与冶金引用本文复制引用
朱晓玺,孙文诚,杨曦..动静组合加载下岩石-充填体破坏特征研究[J].科技创新与应用,2024,14(5):73-76,4.
