思林水电站地下厂房洞室群布置优化设计

Optimization Design of Cavern Group Layout for Underground Powerhouse of Silin Hydropower Station

思林水电站地下厂房因受地层限制洞室群布置集中,该区间洞室纵横交错、上下重叠,存在洞室稳定、施工干扰、调保计算裕度不大等问题。随着各阶段勘测设计研究的加深,先后对地下洞室布置从外到内、从总体到布局对细部结构进行了多个层次的优化调整。优化设计后不仅简化了布局、方便了施工、改善了机组运行条件,而且节省了工程投资、改善了洞室稳定的条件,收到了理想的效果。

The cavern group layout for underground powerhouse of Silin Hydropower Station was centralized because of the space limitation of stratum. As a result of the crisscross and vertical overlapping caverns, certain problems exist. These include cavern stability, construction interference, low allowance of adjustment calculation, and so on. Through different stages of the investigation, the optimal adjustments have been made to the detail structures of underground cavern group layout, from outside to inside, general to local arrangement. After design optimization, not only it will simplify the layout, convenient for construction, improve the unit operating conditions, but also it will save the project investment, and improve the conditions for cavern stability. It reaches ideal effect.