利用旁通洞方式解决过机泥沙问题的探索  

Exploration on Solving Problem of Sediment Passing the Turbine by Bypass Tunnel

作　　者：师广山[1] 任宏斌 刘永智[1] 刘娜[1] SHI Guangshan;REN Hongbin;LIU Yongzhi;LIU Na(PowerChina Northwest Engineering Corporation Limited,Xi'an 710065,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司

出　　处：《西北水电》2019年第6期22-25,共4页Northwest Hydropower

摘　　要：结合河道流量大时含沙量高的特性和工程特点,依照分流分沙原理,探索利用导流洞在库区设置旁通洞,利用旁通洞进水口与电站进水口之间的水库形成沉沙池,在大流量时分流入库流量和泥沙,降低库内水流流速,加速泥沙沉降,解决过机泥沙问题。通过分析论证,表明设置旁通洞能够有效地解决工程泥沙问题,在技术、经济方面也具有优势。With consideration of the project features and engineering characteristics of high sediment content during large river flow,and in accordance with the principle of diversion and sedimentation,the article explores the use of diversion tunnel to set up bypass tunnel in the reservoir area,and form a sand basin by the reservoir between the bypass tunnel inlet and the power station intake.During large flow period,the discharge and sediment shall be diverted,reducing the flow velocity in the reservoir,accelerating sediment settlement,and solving the problem of sediment passing the turbine.Through analysis and demonstration,it is shown that the setting of the bypass tunnel can effectively solve the engineering sediment problem,and it is also superior in terms of technology and economy.

关 键 词：旁通洞 过机泥沙含量 工程泥沙 小库容 高水头 

分 类 号：TV672.1[水利工程—水利水电工程] TV145.3