十三陵抽水蓄能电站大跨度地下厂房施工

Construction of large-span underground powerhouse of Shisanling Pumped-storage Power Plant

十三陵抽水蓄能电站地下厂房的地质条件复杂，施工跨度大，支护型式多．施工技术质量要求高，如何保证地下厂房开挖安全与稳定是至关重要的。经过专家及有关单位人员的认真研究，确定了厂房的位置。根据施工要求确定了分层原则及施工通道的布置。开挖方法：顶拱开挖分５块进行；中、下部开挖，１、２号机与３、４号机分别分５层和６层进行；此外，还采取了排水、断层处理、高边墙开挖的保护、系统锚杆、原型观测等多项措施。实践证明，施工质量是好的。

The underground powerhouse of Shisanling Pumped-storage Power Plant has a complex geological eondetions,large-span construction, various types of support facilities and high quality requirements for construction. Therefore, it is extremely important to ensure the excavation safety and stability of underground powerhouse. After theserious study and discussion by experts and persons from the concerned parties. the layout of the construction access have been determined according to construction requirements. The excavation methods are as follows: the excavation of upper arch is condllcted by five layers. The excavation of the middle and lower parts, and the No. 1 andNo. 2 generating unit position is also conducted by five layers, and that of No. 3 and No. 4 generating unil positionby six layers, In addition many measures have also been taken, such as drainage, fault treatment, protedtion of excavation of high side-wall, systematic anchor rod, prototype observation. etc. It has showed that the constructionquality of Shisanling Pumped-storage Power Plant is excellent.