摘要
TBM是现代隧道开挖的主要工具,掘进开挖在许多隧道中已得到了成功应用。目前,在国内许多施工过程中,由于地质条件极其复杂,岩体坚硬并且岩性变化大,导致TBM刀圈出现卷刀、崩口、断裂、刀圈移位磨蚀度偏大及空磨刀等现象,严重影响了挖掘进度和挖掘效益。针对这些问题,阐述TBM破岩的一般机理。在此基础上用DDA简单模拟岩体在各种结构面组合下有荷载作用的破坏,更直观反映破岩过程。
TBM is the main tool of the modern tunneling, tunneling excavation in the many tunnels have been successfully applied. In many domestic construction process, due to the extremely complex geological conditions, hard rock and lithologic changes, TBM rims appear to be turned, chipping, fracture, abrasion degree of knife ring shift too large and empty sharpening etc, and it has seriously affected the mining progress and mining efficiency. In order to solve these issues, the general mechanism of TBM rock is described, based on this, the DDA simple simu- lation of rock in a variety of combinations of structural plane loads of damage, more directly reflect the process of breaking rock.
出处
《科学技术与工程》
北大核心
2012年第20期5101-5104,5116,共5页
Science Technology and Engineering
