液压滑模施工技术在瓦屋山水电站调压井混凝土施工中的应用

Support during Excavation of Surge Tank at Wawushan Hydropower Station

介绍了液压滑模施工技术在瓦屋山水电站竖井施工中的应用。液压滑模施工具有施工速度快、施工工艺可靠、经济效益明显等特点。结合工程实践,对液压滑模系统结构设计和施工方法进行了阐述。

At Wawushan hydropower station,its surge tank is a circular vertical shaft with diameter 20.0m and depth 107.2m.The most surrounding rocks are classified as IV and V,therefore,the surrounding rocks are fractured,resulting in great construction difficulties.During construction,proper safety support measures should be taken to ensure safety during shaft excavation and to ensure commercial operation of Wawushan hydropower station on time and gain benefits.In this paper,safety support measures for surge shaft with large section are selected among conventional underground engineering support measures and safety support scheme during large-sized surge chamber excavation under poor and weak rock geological conditions are presented to give references to the similar projects.