公路岩质边坡稳定性的工程地质分析

岩质边坡稳定性问题对公路工程建设的决策、造价和工期具有重要的影响和作用;同时,它还是公路边坡工程设计与施工的重要依据条件之一。针对漳龙高速公路XX段岩质边坡的稳定性问题,从边坡的地形地貌特征、岩石类型与特征、岩体结构类型与特性、结构面发育度与优势面状态等多方面因素,并采用赤平极射投影法;对该段岩质边坡的稳定性进行定性的工程地质分析。

Engineering Geological Analysis on the Stability of Highway Lithological Slope

Lithological slope is a commen type of slope in a coastal mountain area and hilly country,which is a important type of highway slope.The problem of stability has an important effect on the decision-making,cost and time limit for a project,meanwhile it also has a instructional effect on the design and construction for a project.In order to solve the problem of lithological slope stability along the Zhang-Long expressway,based on many factors,including the terrain and geomorphic characteristic of slope,the type and property of rock,the type and characteristic of the structure of rock mass,the developing degree of structure plane and the state of preferred plane etc,the stereographic projection method is taken to evaluate and analysis the stability of lithological slope on this road qualitatively.The result of this kind of evaluation and analysis coincides with the result got by the method of mechanicial and mathematical theory,so the lithological slope along this section of road is stable.Therefore we can conclude that it is effective to assess and analysis the highway lithological slope stability with the method of the comprehensive qualitative assessment of engineering geological condition,and this practical significant method has worth for popularization.As to the same or similar problem of engineering highway slope stability assessment,it also can be used for reference.