长廊式调压室结构方案优化

长廊式调压室运用于混合式水电开发中,常采用隔墙的形式将长廊结构分开形成独立并联调压系统。不同隔墙方案对调压室的施工安全便利、运行整体稳定和经济投资产生影响。因此本文合理优化其结构设计方案,以达到科学合理的设计目的。以某大型长廊式调压室为例,分析比较两种不同结构设计方案在围岩稳定、施工便利、投资预算的优劣。结果表明:整体性良好的岩柱隔墙在增强调压室施工阶段围岩稳定性和运行阶段洞室结构的整体稳定性有着明显优势,结合施工和经济因素,方案Ⅰ为优化方案。

Optimization of structure scheme for long corridor surge chamber

The long corridor surge chamber has been widely applied in mixed hydropower development,its long corridor is divided into independent pressure regulation system by partition wall in the chamber.The different schemes of partition walls has a significant impact on the safety of construction, reliability of operation as well as invest.The design scheme of structure should be reasonably optimized.Taking a large long corridor surge chamber as an example, the paper analyzed the advantages and disadvantages of tow different design schemes in stability of surrounding rock, convenience of construction and investment of project. The result indicated that rock column of good integrity has obvious advantages to strength the stability of surrounding rock in period of construction and the stability of chamber structure in period of operation. Combined with the consideration and economic factors, the optimal program is scheme I.