玉树州查隆通水电站导流洞设计

摘要

导流洞是一个临时的施工导流隧洞，它的特点之一是工期往往是很紧迫的，如果不能按期完成，就会造成整个工程的工期延长。水库运行时利用放水钢管对下游进行灌溉、人饮供水、生态基流放水并兼顾水库放空。因此，一定要根据现场的地质、地形情况，枢纽的规划任务，按照一洞多用的原则，恰当的采用的各建筑物布置形式。这样既可减小工程量、降低造价、有利于整个工程的流水行作业，又可大大提高工程进度。

本设计依据对玉树州查隆通水电站的两岸地质地形、水文等资料的研究总结，在水库右岸将导流洞与放水洞合一布置，将临时性的导流隧洞部分封堵改建为永久放水隧洞。在整个工程施工过程中用导流洞担任导流任务，在大坝建成后兼顾冲砂清淤、水库放空等任务。

查隆通水电站右岸导流泄洪洞设计流程为：水文地质和气象和两岸地质条件等资料的考察→总结设计所需基本资料→参考设计规范→导流洞部分设计→放水洞部分设计→下游消能防冲设计。各设计包括必要的水力计算、衬砌计算等计算说明。最终得出一套完整的导流放水洞以及上下游围堰图纸。

关键词：导流放水洞，水力计算，衬砌计算，体型设计

Yushu Charlon Through The Design Of Hydropower Station Diversion Tunnel

Abstract

Diversion tunnel is a temporary construction of diversion tunnel, is one of the characteristics of its time limit for a project is often very urgent, if can not be completed on schedule, it will cause prolonged the duration of the whole project. The reservoir operation using steel discharge for irrigation, drinking water supply to the downstream, and taking into account theecological base flow water reservoir

emptying. Therefore, we must according to the geology and topography of the site, the hub of the planning task, in accordance with the principle of a multi hole, proper use of the building layout. This can reduce the engineering quantity, reduce the cost, is beneficial to the whole project of water do the job, but also greatly enhance the progress of the project.

According to the design of Yushu state Chalon sur pass hydropower station on both sides of the geological, geomorphological, hydrological data of the research summary, in the right bank of the reservoir will guide hole and a discharge hole close arrangement, temporary diversion tunnel partially blocked reconstruction is a permanent drainage tunnel. In the whole process of engineering construction in diversion tunnel as the diversion task, after the completion of the dam in both washed sand dredging, the emptying of the reservoir and other tasks.

Chalon sur pass hydropower station right bank diversion tunnel design process for: hydrological and meteorological and on both sides of the geological conditions of the study, summary design in the required basic data and reference design specification, diversion tunnel section design, drainage hole part of the design, energy dissipation downstream scour protection design. The design includes instructions for calculating, the necessary hydrauliclining computing etc.. Finally a complete set of water diversion tunnel and downstreamcofferdam.

Keywords: Water diversion tunnel, Hydraulic calculation, Lining calculation, Shape design