某小型水电站压力钢管过河方案优化设计

Optimizing Design of Scheme for Penstock Crossing River

某小型水电站压力钢管过河段设计,结合地形地质条件,过河方案初步确定在管桥过河方案和埋管过河方案中选择。文章对这2种典型的过河方案进行了经济技术比较,最终选定埋管过河方案并对埋管过河方案的技术难点进行了分析。该工程实践证明:在河谷横断面形式较为平缓且河床较宽时,采用埋管过河方案较优。

Concerning the design of the scheme for a penstock crossing the river in one small hydropower station, the river-crossing scheme is to be selected from the river crossing with penstock bridge or the river crossing with buried penstock in combination with the ac- tual topographical and geological conditions. In the paper, these two schemes are compared in terms of technology and cost. The scheme of river crossing with the buried penstock is finalized. Furthermore, the technical difficulties of the selected river crossing scheme are ana- lyzed. This engineering experience proves that the scheme of river crossing with the buried penstock is better when the river valley section is gentle and the riverbed is wider.