基于“锚杆框架梁+主动防护网”的裂隙岩质边坡治理措施研究

Research on Protection of Fractured Rock Slope Based on Anchor Frame Beam Combined with Active Net

以某高速公路某处岩质边坡为研究对象,采用极限平衡法并结合Hoek-Brown经验强度准则对边坡的治理措施进行有效性评估。该处边坡最典型的特点是岩层层理较薄,节理发育,受风化作用严重,都处于极限平衡状态,较难直接确定计算参数。因此,首先通过现场地质调查获取边坡基本地质信息并确定边坡的典型计算剖面形态,然后采用slide软件反演合适的岩体计算参数,为设计合理的边坡支护方案奠定基础。最后,针对提出的设计方案,分析在3种工况(正常工况、暴雨工况、地震工况)下边坡防护措施的有效性,对治理后的边坡稳定性进行了评估。

Selecting two rock slopes of a certain highway as research objects,and the effectiveness of slope treatment measures is evaluated by using the limit equilibrium method and Hoek-Brown empirical strength criterion.The most typical characteristics of the two slopes that the layers of strata are thinner and the fractures is developed well,which are in a state of the maximum balance and it is difficult to directly determine the calculation parameters.Firstly,the basic geologic information is acquired from geological survey and the typical calculated section shape of the slope is confirmed.Secondly,back analysis of geomechanical parameters is obtained by using the slide software,which provides evidence for the feasibility of the slope protection program.At last,for existing protection program,this paper analyzes the effectiveness of slope protection measures in three conditions(normal conditions,heavy rain conditions,earthquake conditions),and evaluates the slope stability after the treatment.