防灾减灾工程学报2023，Vol.43Issue(6)：1395-1404,10.DOI:10.13409/j.cnki.jdpme.20220802003
三峡库区棺木岭危岩体涌浪风险防控研究
Study on Risk Prevention and Control for Impulse Wave Generated by the Guanmuling Dangerous Rock Mass in the Three Gorges Reservoir Area
摘要
Abstract
The stability of the dangerous rock base of the Guanmuling in the Three Gorges Reservoir area continues to decline due to the severe deterioration of rock mass.Potential wave disaster induced generated by the rock mass collapse seriously threatens the safety of the Jiuwanxi drifting scenic spot and the Yangtze River waterway.This paper focuses on the risk assessment of dangerous rock wave and the prevention and control design of dangerous rock wave based on fluid-structure coupling numeri-cal simulation.The results show that:Under the condition of the reservoir water level of 145 m in tourism peak season,the maximum possible height of wave generated by the dangerous rock mass in-stability in Guanmuling is about 19.2 m,with the maximum ascending height of the Jiuwanxi tourism wharf on the opposite side of 15.1 m,and the Yangtze River of 1.6 m,which seriously threatens the safety of these waterway about 15 km.In view of the dangerous rock mass under eccentric compres-sion and the deterioration of the base rock mass in the fluctuation zone,the engineering prevention and control design of"bag concrete cofferdam + rock cavity filling"was carried out on the lower cavity of the dangerous rock mass,which increased the stability coefficient of the Guanmuling dangerous rock mass from 1.3 to 2.6.This study contributes directly to the prevention and control project of danger-ous rock mass in Guanmuling,also provides reference for the risk prevention and control of wave gere-rated by other dangerous rock masses in the reservoir area.关键词
危岩体/涌浪/数值模拟/岩腔充填/防治工程Key words
dangerous rock mass/impulse wave/numerical simulation/cavity filling/prevention and control engineering分类
建筑与水利引用本文复制引用
徐锦宏,黄波林,聂邦亮,许凯凯,李滨..三峡库区棺木岭危岩体涌浪风险防控研究[J].防灾减灾工程学报,2023,43(6):1395-1404,10.基金项目
国家自然科学基金项目(42077234)资助 （42077234）
