期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Simultaneous effects of joint spacing and joint orientation on the penetration rate of a single disc cutter 被引量:13
1
作者 bejari hadi Kakaie Reza +1 位作者 Ataei Mohammad Khademi-Hamidi Javad 《Mining Science and Technology》 EI CAS 2011年第4期507-512,共6页
This paper describes the influence of joint spacing and joint orientation on the penetration rate of a Tunnel Boring Machine (TBM) disc cutter as modeled by the Discrete Element Method (DEM). The input data for th... This paper describes the influence of joint spacing and joint orientation on the penetration rate of a Tunnel Boring Machine (TBM) disc cutter as modeled by the Discrete Element Method (DEM). The input data for the siLmulations were obtained from the sandstone along the AIborz tunnel that is currently being excavated in Iran using a 5.2 m diameter open TBM. Three joint spacings, 150, 200, and 300 mm, were modeled together with seven values of joint orientation; 0°, 15°, 30°, 45°, 60°, 75°, and 90°. The results show that the penetration increases when joint orientation increases from 0° to 75°, but it decreases as the joint orientation increases further from 75° to 90°. This is true for each joint spacing. In addition, for a given joint orientation increasing the joint spacing causes the TBM penetration to decrease. The optimum joint orientation, from the viewpoint of TBM penetration, is about 60-75°. 展开更多
关键词 Joint orientation Joint spacing TBM DEM
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部