Static And Dynamic Response Of Directional Blasting Asphalt Concrete Inclined Wall Rockfill Dam

Directional blasting rockfill dam has the advantages of saving engineering investment and fast construction speed.Because it is difficult to accur.ately control the particle size of the accumulation rock,and the porosity of the dam cannot be accurately grasped.So the porosity of the dam is large and extremely uneven,and the directional blasting rockfill dam may produce large and uneven deformation.Excessive and uneven deformation of the dam will lead to the destruction of the anti-seepage system and affect the safety of the dam.It is a key to ensure the safety and effectiveness of the anti-seepage system of the directional blasting rockfill dam.This paper studies the safety and stability of the directional blasting rockfill dam.I will research the static and dynamic response and seismic stability analysis of a directional blasting asphalt concrete inclined wall rockfill dam.The main research contents are as follows:(1)The numerical model of the directional blasting rockfill was choosen.It is based on summarizing the key problem of numerical calculation of earth-rock dams.And then I will establish the numerical model for the three-dimensional static analysis of directional blasting rockfill dams.And I will study the law of stress and deformation of concrete and asphalt concrete inclined wall.The results show that the deformation of the directional blasting asphalt concrete inclined wall rockfill dam body and inclined wall is larger than that of the general face rockfill dam on the cover layer.It has a great impact if the shape of the asphalt concrete impervious inclined wall is irregular.(2)The seismic response laws such as the seismic acceleration,seismic displacement,and seismic stress of the directional blasting rockfill dam and impervious element were researched.It is based on the finite element method that the three-dimensional nonlinear dynamic response analysis of the directional blasting rockfill dam.The results show an obvious "whiplash effect".The acceleration,displacement,stress and permanent deformation response of the directional blasting rockfill dam body and inclined wall are gradually increasing from the bottom to the top.It has some risks like sliding at the top of the dam,a certain tensile stress of the inclined wall and irregular parts.it is affected by the uneven and loose characteristics of the blasting rockfill(3)The seismic stability of the slope of the directional blasting rockfill dam was studied And this paper take the typical characteristics of the filling structure of the dam section and the geological conditions of the dam foundation into consideration.The results show that the safety factor of the typical section of the directional blasting rockfill dam is large,and the location of the sliding arc may be shallow.The directional blasting rockfill dam has a good seismic stability.