摘要
大金坪引水隧洞位于高山峡谷区,受断裂带附近应力集中影响的洞段、软硬岩相间的洞段、硬脆岩质洞段、围岩具备岩爆灾害形成的基本条件,应当予以预测评估。通过评估,可预防岩爆灾害对施工人员、设备的伤害。
Diversion tunnels of Dajinping hydropower project are located in valley area. At tunnel sections affected by stress concentration near the fracture zones, alternated with soft and hard rocks, or composed of hard fragile rocks, the hazard of surrounding rock burst is likely. Therefore prediction and evaluation shall be made so as to protect construction workers and equipment from rock burst hazard.
出处
《西北水电》
2009年第1期6-8,共3页
Northwest Hydropower
关键词
引水隧洞
应力作用
硬脆围岩
岩爆灾害
headrace tunnel
stress effect
hard fragile surrounding rock
rock burst hazard
