摘要
文章针对锦凌水库工程泄水建筑物布置和断面情况进行水力学模型试验,通过模型试验设计计算,确定了冲坑距溢流堰鼻坎、冲坑距底孔鼻坎以及冲刷坑上游反坡值,分析论证了溢流堰泄流能力偏于安全;根据监测数据观测结果,确定了溢流坝堰顶下游附近和鼻坎、挑坎处等出现负压的位置以及最大流速发生位置和设计流量水面高程;引进力学相关理论计算了溢流坝段坝体和坝基的应力,分析了溢流坝段抗滑稳定性及深层抗滑稳定性,得出结论:泄水建筑物结构设计满足要求。该工程泄水建筑物结构和断面布置可为类似坝体工程设计和施工提供借鉴和工程指导。
According to the discharge structure layout and section situation of Jinling reservoir, by calculating the model test, the hydraulic model test was conducted in the paper to determine the scour hole from the overflow weir bucket, bucket bottom scour distance and scour upstream against the slope value, and also analyze the discharging capacity of overflow weir on the safe side. In line with the results observed from the monitoring data, the position appearing negative pressure, the location of maximum flow velocity and surface elevation of design discharge were determined near the downstream of the spillway crest and the bucket; relevant theory about mechanics was introduced to calculate the stress of spillway dam and dam foundation and analyze the stability against sliding on spillway dam section and deep layer. A conclusion is drawn that the discharge structure meets the demands of design. The structure and section arrangement of the discharge structure can provide references and guidance for design and construction of similar dam projects.
出处
《黑龙江水利科技》
2017年第3期9-12,16,共5页
Heilongjiang Hydraulic Science and Technology
关键词
水利工程
坝体设计
泄水建筑物
水工试验
稳定性
water conservancy project
dam design
discharge structure
hydraulic test
stability
作者简介
宋景峰（1969-），男，辽宁鞍山人，高级工程师，研究方向为水文站网建设与规划，水文遥测技术等。
