摘要
坝基优化是节省水电工程投资的有效措施之一,对研究兼顾经济效益和大坝安全稳定性的坝基设计方案具有重要意义。在瓦托水电站工程中,结合坝址实际情况,对河床取样7组岩芯进行了物理力学性质试验,对左岸基座阶地进行了原位直剪试验,并对河床开展了岩石声波测试,论证了坝基岩体的力学强度指标,提出了坝基岩体物理力学参数地质建议值,为坝基优化设计提供数据支撑。根据取得参数对溢流坝段、厂房坝段和左岸重力坝段的建基高程进行了优化设计,在减少工程量和节省工程投资方面取得了明显效果。
Dam foundation optimization is one of the ef fective measures to save hydropower project investment.It is of great signif icance to study the dam foundation design scheme which takes into account economic benef its and dam safety and stability.In the project of Watuo Hydropower Station,Combining actual conditions of dam site,the physical and mechanical properties tests were conducted on 7 sets of rock cores sampled from the riverbed,in-situ direct shear tests were conducted on the terrace of the left bank base,and rock acoustic tests were carried out on the riverbed.These tests demonstrated the mechanical strength index of the dam foundation rock mass and put forward the suggested geological values of the physical mechanical parameters of the dam foundation rock mass to provide data support for the optimal design of the dam foundation.According to the obtained parameters,the foundation elevation of the overf low dam section,the powerhouse dam section and the gravity dam section on the left bank is optimized,and obvious results are obtained in terms of reducing the amount of works and saving the project investment.
作者
田江伟
泽旺曲扎
TIAN Jiangwei;ZE Wangquzha(Jinhe River Basin Hydropower Development Co.,Ltd.Tibet Development&Investment Croup,Changdu,Tibet Autonomous Region,854000 China)
出处
《科技创新导报》
2021年第7期44-50,共7页
Science and Technology Innovation Herald
关键词
瓦托水电站
坝基优化
工程投资
优化效果
Watuo Hydropower Station
Dam foundation optimization
Project investment
Oplimization effect
