摘要
断面比选设计是为了研究输水隧洞在复杂的地质条件中能够更好的施工,在运行期具有更好的过流能力,并且在建设中节省工程投资而进行的不同断面设计分析。以在建某长输水隧洞为例,选择城门洞型和马蹄形两种不同设计断面,从水力参数设计、施工方法、工程量及工程投资等各个方面进行对比分析计算,选择出易于施工,水利条件好并节省投资的设计断面,再进行输水隧洞正常水深、临界水深、临界底坡的水力计算,并分析了设计断面的水力特性。最后,提出了在输水隧洞断面设计上的几点建议,供水利设计和施工人员参考。
The sectional comparison design is to study the construction of the water tunnel in the complex geological conditions,to have better over-current capacity during the operation period,and to save engineering investment in the construction for different sectional design and analysis. Taking a long water-delivery tunnel under construction as an example,two different design sections in the shapes of city gate cave and horseshoe are selected;comparative analysis and calculation are made from the hydraulic parameter design,construction method,engineering volume and engineering investment and other aspects.The design sections featured by easy construction,good water conservancy conditions and saving investment are selected,and then the normal water depth,critical water depth,hydraulic calculation of the critical bottom slope of the water-delivery tunnel are calculated;moreover,the hydraulic characteristics of the design section are analyzed. Finally,some suggestions on the design of the water-delivery tunnel section are put forward,for reference by water supply designer and construction personnel.
作者
赵鹏博
ZHAO Peng-bo(Gansu Provincial Water Resources and Hydropower Engineering Bureau Co.,Ltd.,Lanzhou,Gansu 730070)
出处
《地下水》
2020年第1期215-217,259,共4页
Ground water
基金
四川省教育厅项目(18ZB0539)。
关键词
输水隧洞
形状比选
过水断面
水力半径
高宽比
水力计算
water-delivery tunnel
shape comparison
hydraulic section
hydraulic radius
height-width ratio
hydraulic calculation
