水位下降作用下岸坡动态变形机理及防治措施

Dynamic deformation mechanism and prevention measures of bank slope under the action of water level drop

为了研究三峡库区老铜罐驿库岸边坡,在水位下降作用下岸坡动态变形机理,根据多年的监测资料和勘查成果,分析其变形特征和失稳机理,提出合理的防治措施。研究结果表明:三峡库区老铜罐驿库岸边坡,在雨季库水位降低过程中,产生向着滑坡体外侧的渗流压力和动水压力,致使边坡稳定性降低,形成"牵引式"破坏模式,最后提出采用"普通抗滑桩+排水工程+护坡"进行治理。

In order to study the Laotongguanyi bank slope in the Three Gorges reservoir area,the dynamic deformation mechanism of the bank slope under the action of water level decline,based on years of monitoring data and exploration results,analyze its deformation characteristics and instability mechanism,and propose reasonable prevention measures.The results show that the bank slope of the old copper cans in the Three Gorges reservoir area produces the seepage pressure and hydrodynamic pressure toward the outside of the landslide during the rainwater level reduction in the rainy season,resulting in the stability of the slope and the formation of"traction"damage.The model was finally proposed to be treated by"general anti-slide pile+drainage engineering+slope protection".