< Img src="/uploadfile/2024/0701/1719819620105146. jpg" alt="Figure 1. jpg" width="450" height="522" border="0" vspace="0" style="width: 450px; height: 522px; "/>

Image; Distribution Map of Landslides in the Southern Fault Zone of the Loess Plateau; The active faults in the Loess Plateau of China are well developed; Font size: 14px ">, especiallyThe southern edge of the Loess Plateau is located at the junction of tectonic blocks, which is the most strongly compressed section of the mid latitude latitudinal tectonic beltImage2,Loessloess with obvious time effectsloess- The research on the creep characteristics of mudstone landslide sliding zone soil is still not rich, and there is a lack of mechanism for the formation of such landslides under the background of fault activity based on this.; Font size: 14px ">Explanation

Image; Typical loess in the active zone of the Weibei Plateau Fault-Mudstone landslide distribution map

In response to the above issuesDr. Xue Chen, a geological engineer from our department(Imagefont family: Tahoma; Font size: 14px ">,Combined with typical loessMudstone; A series of triaxial creep experiments were designed and carried out for a landslide example.(Figurestyle="font family: Tahoma">4),Summarized the changes in creep characteristics of sliding soil under different conditions such as moisture content, confining pressure, dry density, contact angle, and loess layer thickness(Image5; Font size: 14px ">,Loess- MudstoneCreep constitutive equation of landslide sliding zone soilImage6); Font size: 14px ">, describing the accelerated creep stage after adding mudstone by introducing new nonlinear parameters(Figure<7). Finally,analyzed typicalloessmudstoneFigures 8 and 9)and reveal its formation mechanism under the background of fault activity.(Figure10; Color: # 0070C0; font size: 14px ">)

Image; font-size:14px"> < Loess-Field Investigation of Mudstone Landslides

Image; font-size:14px"> < Morphology of Triaxial Creep Test Samples; Times New Roman"; font-size: 14px; "&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;&nbp;Figure5Changes in creep characteristics of sliding soil

Image; font-size:14px"> < Loess-Creep constitutive equation of mudstone landslide sliding zone soil

Image; Font size: 14px ">Theoretical curve of accelerated creep stage of new constitutive equation

 < Img src="/uploadfile/2024/0701/1719819772862509. jpg" alt="Image 8. jpg" width="600" height="413" border="0" vspace="0" style="width: 600px; height: 413px; "/>

Image; font-size:14px"> < Span style="font family: Song typeface">Three dimensional morphology of the Weibei Plateau fault active zone (local study area)

Image9; Font size: 14px ">Evolution and Landslide Slope Structure of the Weihe River Basin

span style=" font family: Tahoma; "; Font size: 14px>Image10Loess under the background of fault activity-Formation mechanism of mudstone landslides

The following conclusions are drawn:

; Font size: 14px ">(1)Water pairsLoessMudstone landslideThe strength of sliding soil has a significant weakening effect. As the moisture content increases, the strength attenuation of the binary structure specimen is more significant than that of the homogeneous specimen

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