Study On Geological Disaster Engineering Treatment Of Mountain In Fenghua Area

Fenghua Zhu Ao mountain geo hazard engineering control area is located in the middle part of Xiangshan port north of Ningbo,Zhejiang,Fenghua area,Fenghua Town,near the village of Zhu Village.The trend of the landslide is consistent with the mountain,which is near North and south,and the vertical height of the slope is more than 100 meters.Through the actual survey,measurement and collection of basic data,combined with the theory of limit equilibrium,a mechanical model is established to analyze the stability of the project.The slope is the upper and lower rock slope.During the calculation,we choose the stereographic projection method to calculate and analyze the stability of the lower rock mass,and use the transfer coefficient method to calculate the thrust of the potential landslide.The calculation is carried out by the transfer coefficient method.The stability coefficient K in natural state is 1.17,and the stability coefficient K is 0.89 under the condition of saturation state.According to the importance of the project of "landslide prevention and control engineering survey specification",the safety factor of the potential landslide is calculated under natural conditions.The safety factor is 1.30,and the safety coefficient is 1.20 when the sliding surface is full.Under the natural condition of the slope,the slope is in the unstable state,and the slope is in the unstable state under the condition of saturation.With the application of SLIDE software and numerical model,the numerical analysis of the geological hazard project of the Zhu Ao mountain geological hazard project in Fenghua district is carried out to determine the stability parameters.According to the importance of the project of landslide prevention and control engineering exploration specification,the potential landslide stability is calculated at a safety factor of 1.15-1.20.The calculated results are less than 1.15.Therefore,the slope is in an unstable state.According to the final analysis results,the construction treatment of slope,bolt,anchor cable,lattice beam,cut and drainage and slope greening scheme are selected.In the slope project,the stability coefficient of the reinforced slope is more than 1.30(not less than 1.15 of the first grade slope).