摘要
拟建青藏高原某水电站地下厂房开挖区域地质条件复杂,厂址区埋深大、岩体初始应力高,由此对地下厂房开挖方案比选尤为重要。在区域构造背景及坝址区基本工程地质条件研究成果的基础上,着重考虑岩体质量、地应力、围岩稳定性3个因素,采用数值分析方法对比选方案进行研究。通过对拟建水电站的A方案地下厂房和B方案地下厂房比选方案的稳定性进行对比,得到A方案地下厂房稳定性最好,为推荐比选方案。
The excavation of underground powerhouse of a hydropower station in Qinghai-Tibet Plateau has complex geological conditions. The site area is deeply buried, and the initial stress of the rock mass is high. Therefore, the comparison and selection of the underground powerhouse excavation plan is particularly important. Based on the research results of regional tectonic background and basic engineering geological conditions of dam site area, three factors, namely rock mass quality, in-situ stress and surrounding rock stability, are emphatically considered. The numerical analysis method is adopted to study comparison and selection of schemes. By comparing the stability of the underground powerhouse of scheme A and scheme B of the proposed hydropower station, the underground powerhouse of scheme A has the best stability and is the recommended comparison scheme.
作者
杨伟强
巨广宏
王立志
Yang Weiqiang;Ju Guanghong;Wang Lizhi(Northwest Engineering Corporation Limited,Xi'an 710065,Shaanxi)
出处
《陕西水利》
2022年第10期110-112,共3页
Shaanxi Water Resources
关键词
水电站
地下厂房
围岩稳定性
数值分析
方案比选
Hydropower station
underground powerhouse
numerical simulation
surrounding rock stability
scheme comparison and selection
