摘要
周宁水电站地下厂房埋深250～300m,开挖尺寸为66.82m×17.9m×42.2m,分6层开挖,厂房开挖采用控制爆破,根据各层围岩的具体情况,分别确定了爆破参数及施工方法;由于岩壁吊车梁在厂房下部开挖期间进行施工,因此施工中对其采取了保护措施。
The embedded depth of the underground power house of the Zhouning Hydropower Station is 250-300 m, and the excavation dimension is 66.82 m×17.9 m×42.2 m. The underground power house is excavated in six floors. This paper introduces the blasting parameters and construction method which are determined respectively in accordance with the actual conditions of the various layers of surrounding rocks. As the construction of the rock bolted beam is carried out during the excavation of the lower part of the powerhouse, therefore this paper also introduces the pretection measures for the rock bolted beam. Finally this paper summaries the issues needing attention during the excavation.
出处
《水力发电》
北大核心
2006年第12期76-78,共3页
Water Power
关键词
地下厂房
开挖
爆破
周宁水电站
underground power house
excavation
blasting
Zhouning Hydropower Station
