水利水电科技进展2001，Vol.21Issue(1)：49-52,4.
发电洞竖井外壁围岩爆破对混凝土质量的影响
Impact of Outer Sldewall Adjoining Rock Burst atShaft Section of Power Tunnel on Concrete Quality
董安建 1邓铭江 2周小兵 2贺建国2
作者信息
- 1. 水利部水利水电规划设计总院,
- 2. 新疆额尔齐斯河流域开发工程建设管理局,
- 折叠
摘要
Abstract
In order to protect the cast concrete at the shaftwell section of the power tunnel against corrosion byseveral strong corrosive mediums, a protection project atthe outer sidewall of the shaft well is needed. Inaccordance with the structural features of the shaft, anengineering scheme of excavating ring-shaped raiseraround the adjoining rock of the outer sidewall of the shaftwell while maintaining the previously-cast concrete isadopted to ensure the stability of the shaft and the dam onthe shaft. The burst and excavation scheme of the ring-shaped raiser is discussed here, for safety, it is proposedthe vibration speed of the shaft well burst be less than 7cm/s,and that the safe vibration speed of the newly-castconcrete (within 7 days)be less than 3cm/s. The concretesidewall acoustic tests before and after the burst prove, thefeasibility and safety of the proposed burst scheme to begood.关键词
竖井/围岩/爆破开挖/安全振速分类
建筑与水利引用本文复制引用
董安建,邓铭江,周小兵,贺建国..发电洞竖井外壁围岩爆破对混凝土质量的影响[J].水利水电科技进展,2001,21(1):49-52,4.
