Stability Analysis And Reinforcement Measures Research Of Slopes In Xiaohuling Of Xiuyan

With the action plan of China-proposed Belt and Road Initiative was issued,the national economy grows steadily and the link between rural and urban areas become more close and integration process rapidly,the construction of road is the key to promote the urban and rural development.However,it's necessary for engineers to consider the question of slope's stability and strengthening prevention engineering's safety and economy,instability and failure of slope is not only the threat to people's life,but also could it bring huge losses and serious influence to people.Nowadays,controlling slope stability it is a rather arduous assignment,it's a important practical significance to study the slope's stability and strengthening prevention measures.In order to provide the reference of disaster prevention and mitigation for the same type slope in the east of Xiuyan county,combining the theoretical analysis and numerical calculation method use the line of Xiuyan county XingYa road construction as an example to analysis preliminary research and reinforce measures for the slope that contained fracture zone.The main work of this paper are as followed:(1)The analysis methods of slope stability,the landslide classification,influencing factors and strengthening prevention technology are studied on the basis of the research status of slope stability and reinforcement measures in abroad and domestic;(2)The finite element strength method(SRM),the theory of unsaturated soil and large geotechnical finite element software Midas/GTS NX are illustrated;(3)Put Xiao huling slope engineering of Xiuyan as an example,The physical and mechanical parameters of rock and soil are determined through the test results,at the same time,the linear equation and indexes of shear strength are fitted out and confirmed;The failure mechanism of landslide is analyzed and received the fracture zone is the weak area;On the basis of field survey data and rock soil parameters,6 slope geological model that based on GTS NX established and calculated the safety factor,three main failure modes and stress strain results are obtained by using SRM method;we knew the slope still unstable due to the development trend and damage of landslide were evaluated according according to the field monitoring results;The sensitivity factors were analyzed by selecting section D of main landslide zone,meanwhile,The relation curves between cohesionc and internal friction angle? and water contentW are fitted;the results can provide reference for the determination of the same type slope parameters in the area.In the aspect of internal influential factor,the influence of cohesion c,friction angle ? Young's modulus E and poisson ratio? and dilation angle? on the stability of section D were studied;in the aspect of external factors,considering the influence of rainfall infiltration.The results showed that there was a positive correlation between Fs with c,and ?,the E and ? have a little effect on Fs,and the ? values were more appropriate at 10 degrees?15 degrees;Fs decreased with the increase of rainfall duration T and rainfall intensity Q on the condition of rainfall infiltration;(4)According to the stability analysis results when lonely cut slope that safety factor is 1.104,which doesn't meet the stability requirements,after taking anti slide piles for reinforcement,the reinforcement effect obviously,at the same time,the safety factor is 1.613 that meets the specification requirements;In addition,the cutting slope,anti slide pile and the pile diameter,anchorage depth impact on reinforcement of slope stability were considered,The results show that the setting of anti slide pile in the middle and lower part of the slope is better than other parts,and Fs also increases with the increase of pile diameter and anchorage depth.