Study on the Regimes and Types of Wave Generation Induced by Landslides
Landslide surges in the reservoir area near the dam seriously threaten the safety of the dam and surrounding personnel.Under-standing the evolution law of surges in the reservoir area is the primary task of early warning for this type of disaster.Taking the No.4 toppling deformation body on the left bank of a hydropower station project in the upper reaches of the Yellow River as the object,a three-dimensional numerical model based on the Flow-3D Hydro prototype scale is established to analyze the surge characteristics and propa-gation-evolutionary characteristics when different parts of the No.4 toppling deformation body are in situ instability.The results show that the type of surge generated by the instability of the No.4 toppling deformation body near the dam bank is a weak nonlinear shock wave.After this wave type evolves,the secondary waves often show characteristics such as maximum wave height and maximum climbing height;if the No.4 toppling deformation body is divided into different parts and is in situ instability.The overall slide of the Duozonglong ditch side has no impact on the structures in front of the dam and at downstream of the dam,and no engineering treatment is required.Howev-er,when the Yellow River side slides in situ as a whole,the right dam abutment has the largest surge of 14.19 m and the maximum surge height on the left abutment is 16.40 m,and the climbing elevation in front of the dam is approximately 3009.00 m,exceeding the top ele-vation of the surge wall,seriously endangering the safety of the face rockfill dam and requiring further engineering mitigation measures.The study results can provide technical support for early warning of landslide surge disaster in the reservoir area.
bank slope near damlandslide surgefluid-solid couplingwave propagationnumerical simulation
万方数据
维普
