Impulse wave run2up generated by reservoir rocky landslides based on physical model experiments
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Abstract:
Impulse w ave g ener ated by landslide in the r eser voir ar ea w ill adversely affect nearby bank slo pes and may cause sec2 o ndary disasters. This study took the ev olution pr ocess of the impact o f impulse w ave generated by r ocky landslide on bank slopes as the study o bject , and established a 3D geomechanical model o f impulse wav e g ener ated by ro cky landslide in the Thr ee Gor ges r eser voir ar ea w it h a similarity ratio of 1 B 70. We studied the law of run2up of impulse w ave g enerated by ro cky land2 slide thr ough 27 sets o f mo del tests with different combinat ions o f w idth, thickness, and slip angle o f the landslide, and pr oposed a fo rmula for estimating the run2up o f im pulse w ave generated by ro cky landslide. The r esults showed that the r un2up of impulse wav e w ould increase w ith the incr ease in w idth, thickness, and slip ang le o f the landslide. The w idth of the landslide had the most signif icant effect o n the impulse wav e r un2up, followed by the thickness of the landslide and the slip ang le of the landslide. The result of the ex isting w ave r un2up estimatio n formula differ ed gr eatly fr om that of the r ocky landslide mo del test value. Based o n the ex periment, w e pr oposed a formula fo r estimating the w ave run2up using the relat ive depth, Potain, and bank slope ang le, which can pro vide a theor et ical basis for estimating r un2up o f impulse wav e g ener ated by r ocky landslide in the r eser vo ir area.
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