湖南省江垭水利枢纽工程地下厂房尾调室设计  

Design of Tailwater surge-chamber in Underground Powerhouse of Hunan Jiangya Hydropower Complex

作　　者：黄建新 

机构地区：[1]湖南省水利水电勘测设计研究总院,长沙410007

出　　处：《地下空间与工程学报》2014年第5期1170-1176,共7页Chinese Journal of Underground Space and Engineering

摘　　要：江垭地下厂房工程主厂房、主变洞、尾调室三大洞室中,尾调室因下游洪水位高,建成后为三大洞中最高洞室,又长期处于水下不利运行条件,另高尾水位涉及厂房防洪问题。为确保洞室围岩稳定和厂房防洪安全,采用二维及三维有限元计算分析洞室围岩稳定性,进行水电站过渡过程分析满足水电站的调保要求和防洪安全,又通过水工模型试验验证优化设计方案。设计上选择阻抗式尾调室,规定电站运行规程等措施降低尾调室涌浪水位从而达到降低洞高的目的,获得洞室围岩稳定及厂房防洪安全,又节省工程量的整体最优效益。Among the three major caverns （ main powerhouse, main transformer cave and the tail-water surge chamber} in the Jiangya underground plant project, the tail-water surge chamber accommodates the highest level of flood, and is the highest cavern. It is under long term adverse condition of operation. The high altitude of the tail water it accommodates also asks for flood protection of the plant. To ensure the stability of surrounding rocks of the cavern, and to secure the plant safety during the flood, two-dimension and three-dimension finite element calculations were adopted in the project to simulate the surrounding rock＇ s stability. The transition process simulation of the plant is also adopted to ensure the requirement of regulation and flood control for the plant. Nevertheless, a number of hydraulic model tests have been undertaken to validate and optimize the design. By employing resistant tail-water surge chamber, and standardizing the plant operation procedures to minimize the water level of surge, in the design the height of the cavern was decreased, hence it not only ensured the stability of the surrounding rock and the plant＇ s security during the flood, but also economically optimized the project through tremendous reduction of workload.

关 键 词：地下厂房洞群围岩稳定分析 阻抗式矩形尾调室 调保计算 水工模型试验 整体效益最优 

分 类 号：TV732.5[水利工程—水利水电工程]