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主要阐述小浪底地下厂房顶拱开挖、台阶开挖、机坑开挖和地下厂房系统支护的施工方案 ,列举了相关的指标和参数 ,介绍处理地下厂房大跨度顶拱施工和高边墙台阶施工难题的具体措施 ,为大型洞室的设计和施工提供有益的参考。
Mainly expounds the construction plan of roof arch excavation, step excavation, machine pit excavation and underground plant system support of Xiaolangdi underground powerhouse, lists relevant indexes and parameters, introduces the construction of long-span roof arch of underground powerhouse and the steps of high wall Concrete measures for construction problems provide a useful reference for the design and construction of large caverns.