| Slope instability is a common phenomenon of geological hazards at home and abroad.Because of its complex geological conditions,the action factors are not single and uncertain.At present,experts and scholars in geotechnical engineering can not fully grasp the mechanism of slope instability,nor can they fully grasp the deformation evolution process of slope quantitatively.Nowadays,the prevention of slope instability is still a very arduous task,so the study of slope stability analysis and treatment technology is still of great significance.In this paper,take the actual project as the research object,according to the site geological survey data,the slope stability analysis and refined evaluation;the slope is reinforced by a new type of anchor(plate-resistant anchor cable),and finally the three reinforcement treatment schemes are compared.The main research contents are as follows:(1)The stability of the slope in Pan Jia Tian Iron Mine Ⅲ area is analyzed.The stability of the slope is calculated by various limit equilibrium methods based on Geo-Slope software.The stability of the slope is analyzed and evaluated by combining the refined evaluation method of the slope stability.(2)A new type of anchor(plate-resistant anchor cable)is used to reinforce the slope.The finite difference method analysis based on FLAC-3D software is carried out and the stress-strain analysis is carried out.A 50m extension design and angle optimization are carried out for the slope.The stability of the slope is analyzed by Geo-Slope software,and the extended slope is strengthened by plate-resistant anchor cable.(3)Three treatment schemes of slope in Area Ⅲ are compared,which are plate-resistant anchor cable reinforcement,slope cutting and foot pressing.The effect of stability factor improvement and economy are compared respectively.The cost of the three schemes is calculated,and the best scheme is finally obtained. |
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