采矿与安全工程学报2012，Vol.29Issue(2)：245-249,5.
顶爆作用下锚固硐室围岩动态裂纹分布及产生机理
The Distribution of Cracks and Its Mechanism of Tunnel Reinforced by Bolts Under Top Explosion
摘要
Abstract
Distribution of cracks and its mechanism of the tunnel reinforced by bolts were studied by numerical analysis. It is proved that numerical results are reliable by comparing the law of stress wave propagation and distribution of cracks. With stress wave propagation, cracks produced by stress waves were formed in free surface of top and tunnel, and some cracks were distributed in two sides of arch foots and between bolts. Comparing cracks of the tunnel with no support and the tunnel reinforced by bolts, the cracks of the tunnel with no support are wider and thicker than anchored tunnel. As a result, it shows that the anchored effect is very good.关键词
岩石力学/隧道工程/锚固硐室/动态裂纹/数值分析Key words
rock mechanics/ tunnel projects/ tunnels reinforced by bolts/ dynamic cracks/ numerical analysis分类
建筑与水利引用本文复制引用
王光勇,任连伟,郭佳奇..顶爆作用下锚固硐室围岩动态裂纹分布及产生机理[J].采矿与安全工程学报,2012,29(2):245-249,5.基金项目
河南省教育厅自然科学基金项目(2011A580003) （2011A580003）
河南理工大学博士基金项目(B2010-58) （B2010-58）
