溪洛渡导流洞堵头混凝土温控设计研究

Study of River Diversion Tunnel Plugging Concret Temperature Control of Xiluodu Hydropower Station

水电工程导流洞在水库蓄水前都要用永久性混凝土堵头进行封堵.以溪洛渡水电站导流洞堵头为例,采用FZFX3D软件对堵头混凝土施工期进行全过程仿真分析,对比了中热水泥和低热水泥两种混凝土对堵头温度场应力场的影响,得出结论:低热水泥混凝土堵头的稳定性较好.本文所提出的结论与建议对类似水电站导流洞堵头稳定性分析以及水电站蓄水发电和安全运行具有一定的参考价值.

The river diversion tunnels of hydropower projects were plugged up with permanent concrete plug before reservoir storage. Taking the river diversion tunnel of Xiluodu hydropower station for example, the whole course simulating computation of plugging in concrete construction period is carried Out by FZFX3D software. The comparison of influences on temperature stress field of plug between two kinds of concretes, low heat portland cement and moderate heat portland cement, is done. The results show that the stability of plug using low heat portland cement concrete can be used better. The recommendations and conclusions have a certain referential value for the similar hydropower station river diversion tunnel plug stability analysis and safety of operation.