摘要
三板溪水电站地下厂房4条尾水支洞在岔洞附近与调压井为大型洞室空间立体交叉,彼此与相邻洞室又形成超薄岩柱,洞室成型与围岩稳定问题突出。为确保施工质量和安全,根据现场施工条件和特点,做了一些探索和实践,薄柱成型和围岩稳定达到了预期目标。
A large-scale underground chamber complex forms close to the manifold sections in Sanbanxi hydroelectric project where the four tailrace tunnel branches connects to the two manifolds and the surge shafts. Super-thin rock pillarswalls created between the neighboring tunnels. The problems about chamber forming and rock stability become outstan-ding. In order to ensure the construction quality and safety, some researches and practices are carried out according to the site construction conditions and characteristics. Expected objectives in super-thin pillarwall formation and rock stability have been realized.
出处
《水力发电》
北大核心
2004年第6期34-36,77,共4页
Water Power
关键词
爆破振动
围岩稳定性
锚喷支护
三板溪水电站
blasting vibration
rock stability
shotcrete support
Sanbanxi Hydroelectric Project
