Stability Evaluation And Engineering Treatment Of District â…¡ Of Lintong Lishan Landslide

The scenic spot of Huaqinggong is located in Lintong District,Xi’an City,Shaanxi Province.The scenic spot of Huaqinggong has pleasant scenery,numerous historical sites and cultural allusions.The Xi’an Incident,which shocked China and foreign countries,happened here in 1936.In 2016,in order to commemorate the 80 th anniversary of the Xi’an Incident,The scenic spot of Huaqinggong plans to build a theater.But the theater is located in the front of district Ⅱof Lishan landslide,it will disturbs the landslide when the foundation of the theater is excavated.District Ⅱof Lishan landslide seriously threatens the safety of the project construction.in the scenic spot of Huaqinggong.Based on the analysis and discussion of the stability,treatment scheme and monitoring effect of District Ⅱof Lishan landslide,this paper aims to provide data and scheme reference for untreated landslide in Lishan and accumulate experience for geological disaster prevention and control in the scenic areaIn this paper,district Ⅱof Lishan landslide is taken as the engineering research object.The main jobs and results are as follows:(1)Through carrying out engineering geological survey,drilling and geophysical exploration on the district Ⅱof Lishan landslide,detailed landslide survey data was obtained.Engineering geological data reveals that only the trailing edge of district Ⅱof Lishan landslide has obviously interface features,and the landslide is a double-layer sliding surfaces in the vertical direction.(2)Based on the long-term landslide monitoring data of scenic spot of Huaqinggong,the qualitative evaluation of district Ⅱof Lishan is made;the quantitative evaluation o of district Ⅱof Lishan is carried out using the stripe method.The calculation parameters of quantitative evaluation are mainly based on geotechnical test results,combined with engineering experience,and given by inverse algorithm.The calculation results show that the two-layer landslide is basically stable under natural conditions;the upper layer landslide is not stable under the saturated condition,while the lower layer is basically stable;the upper layer landslide is not stable under the condition of VIII degree earthquake,and the lower layer is basically stable.(3)According to the field conditions and theoretical analysis results,a qualitative comparative analysis of the landslide treatment plan is made,and the landslide treatment scheme-"two level support" and the landslide monitoring scheme-"multi-point monitoring + tracking prediction" are proposed.(4)The comparative analysis of the deep displacement monitoring data of the district Ⅱof Lishan shows that the landslide is in a stable state after engineering treatment,and the treatment of the district Ⅱof Lishan is effective.(4)There is a certain environmental impact in the process of landslide treatment.We should pay attention to the control of landslide treatment process and do a good job in environmental protection.