定南县某公路某段滑坡稳定性评价.docVIP

东华理工大学毕业设计（论文） 摘 要 摘 要 课题来源实习资料，主要内容是某公路滑坡稳定性计算。在掌握滑坡变形破坏工程地质勘察及防治的基本内容，通过查阅已完成的滑坡工程稳定性计算资料，对该滑坡场地工程地质条件和水文地质条件进行评价，并得到计算参数，为滑坡稳定性系数计算提供依据。论文阐述各工程地质条件对滑坡应力场的影响，用autocad从滑坡剖面截取计算模型，应用公式、图解法进行定性和计算，计算出滑坡稳定性系数，与要求最小值对比，得出结论。通过计算该公路某段滑坡稳定性系数，结合要求值潜在滑面Ⅰ、现状滑坡面、滑面Ⅱ属于中型滑坡，潜在滑面Ⅲ属于小型滑坡。由于边坡处于二级公路旁，参照当地工程资料，要求稳定安全系数要大于等于1.1。通过计算，潜在滑面Ⅰ、现状滑坡面、滑面Ⅱ、潜在滑面Ⅲ在天然条件（工况1）和在暴雨饱水条件（工况2）求的稳定性系数分别为1.18,0.85；1.26,0.89；1.38,0.866；1.34,0.839。得出结论，各个滑面在天然条件（工况1）符合滑坡稳定性要求，但在暴雨饱和条件（工况2）不符合稳定性要求，故边坡不稳,需要对滑坡体进行治理措施。 关键字：高速公路；边坡；勘察；治理；评价 东华理工大学毕业设计（论文） ABSTRACT ABSTRACT This paper is from my internship, its main content is about a calculation of a highway landslide stability. After getting the information about engineering geology exploration of landslide deformation, failure , prevention and control of the basic contents, and referring to the completed engineering landslide stability calculation data, evaluating landslide site engineering geological conditions and hydrological geological conditions, then come to getting the calculation parameter, providing basis for the landslide stability coefficient calculation. This paper introduce the influence of the engineering geological conditions of landslide, make a calculation model by using AutoCAD, choose the application formula and the graphic method for qualitative and calculation, including the calculated stability coefficient of landslide, require the minimum contrasts and draw the conclusion. By calculating a certain section of the landslide stability coefficient, which combined with the medium-sized landslide including required value potential sliding surface Ⅰ, status quo of landslide surface, sliding surface Ⅱ belongs to and the small landslides potential slip surface Ⅲ. Because this landslide is next to the highway, referencing to local engineering data, the stability safety coefficient is required more tha