Stability Analysis And Design For Slope Of The Bailazhai Station Of Yun Gui (Nanning?Kunming)Railway

In the mountains, there have a lot of deep excavation cutting slope, its stability will directly affect the project schedule and safety, and it is a important link of ensuring that reduce the cost. Based on the high cutting slope project of Bai La Zhai station which is one station of the new line of YunGui, the thesis studied the stability of the high slope and finished the preliminary design, specific content is as follows:(1) To understand the current situation of slope stability analysis at home and abroad, to master the common slope treatment technology, in order to determine the research content and technical route.(2) Analysis of the factors leading to high slope failure, the principle of stability analysis of high slope.(3) Analysis the stability of Bai La Zhai station's high cutting slope by Limit equilibrium method. By analysis, it is known that the overall stability of this high cutting slope is high. But the overall stability of this high cutting slope will reduce when it rains. So we have to take reinforcement measures.(4) Combined with the actual situation of the project, designing the reinforcement measures on the high cutting slope, specific design is as follows:? Set up a platform of drainage ditches in the toe of the slope.? The 1?7 grade slope adopts the bolt frame beam and combined with the use of the bolt, and at the same time, the slope platform is widened.? Up 8 grade,the slope using the anchor cable frame beam and combined with the use of anchor cable, but also to widen the slope at all levels.? In first grade, fourth grade, seventh grade of slope toe setting upward inclined deep discharge orifice,5 degrees pitch angle, to get rid of the groundwater and prevent the concentration of groundwater, causing physical and mechanical parameters of slope is reduced, cause local side slope collapse, and even the whole of instability.? Set the detection zone, forming a three-dimensional monitoring network to monitor the high cutting slope.(5) Set up the finite element analysis model by ANSYS software, then analyze the stability by the method of reducing strength. After analysis, it is concluded that the supporting effect is obvious and the stability of the high cutting slope is very good.