【摘 要】
：
In this paper,the rainfall characteristics influence on the stability of sandy slope is studied by combining the theoretical analysis and model tests.Firstl
【机 构】
：
SchoolofTransportationWuhanUniversityofTechnology,Wuhan430063,Hubei
【出 处】
：
2016年交通基础设施和材料国际会议
论文部分内容阅读
In this paper,the rainfall characteristics influence on the stability of sandy slope is studied by combining the theoretical analysis and model tests.Firstly,the model test is carried out and the finite element software(Geo-Studio)is used to simulate the seepage process of the slope under different rainfall conditions.The change curves of the pore water pressures in the different positions of the slope are obtained by the model test and numerical simulation.The applicability of the numerical model is verified by comparing the fitting of the pore water pressures curves.Three factors about slope ratio,rainfall intensity and permeability coefficient of sand are discussed through the numerical simulation,and the stability coefficients of slope is obtained by numerical calculation used as the comparison object.The results show that: in rainfall process,through the observation of the model test and numerical simulation of rainfall infiltration process,slope toe was the first to reach saturation where the slope failure starts from.The major factors that affect the stability of the slope from big to small in turn are the slope ratio,the permeability coefficient and rainfall intensity.When the rain intensity increases from 30mm/h to 150mm/h,the stability coefficients of the slope were reduced from 1.323 to 1.095 when it rained for 36 minutes.The curves showed that stability coefficients decrease with the increase of rain intensity,which is approximately linear.The results of this study can provide the references for the failure mechanism of the slope due to rainfall and the slope protection design.
其他文献
Mechanical property of cement mortar is closely related to polymer modifier type.Four kinds of polymer latex including Chloroprene Rubber(CR),Styrene Butadi
During hardening behavior of concrete,shrinkage is induced.While,new poured pavements slab is subject to constraint by subsurface structure which always aro
The tensile stresses of concrete pavements corners,edge centers,and surface centers under heavy traffic are analyzed as the pavements already deflected unde
Due to the huge difference of material properties,the bonding condition between asphalt layer and concrete leveling course on concrete bridge deck is very c
In order to improve fundamental understanding and facilitate evaluation of mineral aggregate morphological characteristics,this paper herein presents a Four
In this study,to overcome the high cost of accelerated loading test,a small-scale laboratory experiments were developed and conducted toward the potential d
In order to analyze the influences that cement has on the mechanical properties of asphalt cold recycling mixtures in seasonally frozen soil region,taking a
Grain sizes play significant roles in determining internal structure and mechanical behaviors of a granular assembly.The main objectives of this research ar
In order to study the wetting deformation characteristics of the metamorphic soft rock embankment filler,large-scale triaxial tests are conducted with doubl
In order to realize the rapid compactness inspection of cement stabilized macadam(CSM),a detector for the compactness of CSM was developed based on the inst