马岩洞水电站枢纽建筑物力学性能研究

Study on mechanical properties of hub building in Mayandong Hydropower Station

本文对马岩洞水电站的拦河坝、引水隧洞、调压井3个枢纽建筑物的部分力学性能进行了计算研究。对不同坝段、高程和工况运行下坝体的抗滑稳定、抗压强度和承载力进行了分析,结果表明:坝体稳定性符合设计要求;通过引水隧洞衬砌结构计算,推得典型断面结构,采用50~80cm厚度混凝土衬砌方案;依据托马准则对调压井稳定断面和涌浪水位进行复核计算,稳定断面直径,最高、最低涌浪水位,均符合设计要求。

In the paper,some mechanical properties of three hub buildings in Mayandong Hydropower Station,namely barrage,water diversion tunnel and pressure regulating well are calculated and studied.The results show that the stability of the dam meets the design requirements.Typical section structure is obtained through calculating lining structure of water diversion tunnel.50—80 cm thick concrete lining plan is adopted.Stable section and surge water level of pressure regulating wells are checked and calculated according to Toma＇s criterion.Stable cross section diameter,the highest and the lowest surge water level meet the design requirements.