期刊论文

中文

南华大学学报(自然科学版)

1673-0062

2016

30

1

88-92

10.3969/j.issn.1673-0062.2016.01.018

国家级大学生创新创业训练计划基金资助项目（20140555004）； 国家自然科学基金资助项目（51204098）； 湖南省科技厅重点研发计划基金资助项目（2015SK2058-4）；

本校为第一机构

地下岩体工程经常承受动态荷载,进行岩体的动态力学特性研究迫不及待.本文以落锤冲击试验机进行动态加载,通过相似材料预制试验岩石模型,开展了不同节理倾角与无节理岩体模型试件共四组冲击加载试验,对比分析岩石试验样品冲击过程中的力时程曲线与压缩位移时程曲线,得出在落锤冲击荷载作用下节理的存在降低了岩体所能承受的冲击力峰值,增加了其动态压缩位移,岩体节理倾角越小其动态压缩位移越大.

Underground rock mass engineering is often subjected to dynamic loads, and the dynamic mechanical properties of rock mass are studied. The paper is under dynamic loading by drop hammer impact test machine and prefabricates test rock model with similar material.The impact loading test of four groups of different joint inclination and non jointed rock mass model is carried out.The stress time history curve and the curve of the compres- sion displacement in the impact process of rock samples are analyzed comparatively. It is drawn that under drop impact loading joint has reduced the peak impact f...