河宽制约下低水头河床式水利枢纽布置设计探索

分析了通航的丘陵山区河流坝址河宽不足对河床径流式水利枢纽工程布置设计及一期施工导流与通航、工程投资等不利影响,探讨了河宽条件限制下低水头河床径流式水利枢纽建筑工程及水工建筑结构布置设计思路,文中认为坝址河宽不足条件下,应充分利用岸上自然低凹冲沟条带地形布置过坝建筑物,闸坝尽可能选用较大的闸孔尺寸,尽可能降低溢流堰顶标高和减少闸墩数并减小墩厚,缩短总溢流前缘长度,并优化泄水建筑物体型;采用合理的结构布置形式及分缝构造措施,缩减厂房或船闸基础总底宽;一期施工导流临时围堰,在水深条件合适时,可选用占地断面较小、抗冲稳定性较好的围堰堰体结构型式.

Study on Layout Design for Low-head Hydro-junction in River Channel with Inadequate River Width

For a run-of-river hydro-junction built in river channel facilitating navigation in hilly and mountainous areas,inadequate river width at dam site is unfavorable to layout design,primary stage construction diversion and navigation,and project investment.The text studies the way of layout design for low-head run-of-river hydro-junction in river channel and hydraulic building structures given inadequate river width.It proposes to arrange structures crossing the dam by making the best of natural low gully on t...