STABILITY ANALYSIS AND PREVENTION MEASURES OF ROCK SLOPE IN MOUNTAIN SCENIC AREA

At mountainous tourist attractions,casualties caused by block instability and slope instability continue to occur,which seriously affects the safe operation of tourist attractions. In order to ensure tourism safety,this paper takes the import and export slope of a mountain tourist scenic spot in Zhejiang as the research background. It scans the slope rock mass with 3D laser scanner,combines the rocky slope engineering block stability evaluation and visualization software(CPG program) already developed based on coordinate projection method to analyze the rocky slope block stability. It uses the FLAC^3D numerical analysis method to analyze the overall stability of the rock slope,and finally uses the finite element to analyze the proposed corresponding preventive measures. The research results show that the stability coefficient of some typical blocks is lower than the safety factor of 1.2. Due to the influence of weak interlayer,there is a large shear stress and transverse stress at the foot of the slope. The maximum tensile stress area of the steel trestle is small,and the stress value is about 1 MPa. On this basis,a number of comprehensive measures such as block removal,drainage,anchor spraying and avoidance are proposed,forming a prevention and control countermeasure with the characteristics of mountainous tourist scenery.