节理裂隙边坡锚注加固机制及特性研究  

Characteristic analysis of bolting grouting reinforcement in jointed and fractured slope

作　　者：许万忠[1] 彭振斌[1] 袁海平[1] 

机构地区：[1]中南大学地学与环境工程学院

出　　处：《水文地质工程地质》2006年第5期30-33,共4页Hydrogeology & Engineering Geology

基　　金：国家自然科学基金资助项目(50274074)

摘　　要：本文通过对节理裂隙边坡锚注加固模型的力学推导,得出锚注加固工法可以提高岩石边坡弱面抗剪强度和抗剪刚度的结论;指出锚注结构可以充分发挥锚杆和注浆体各自的材料潜能,从而避免锚杆单独作用所存在的弊端;结合某高速公路边坡加固工程,阐述了锚注加固工法的技术特点及工艺流程,指明压力注浆可以针对边坡岩体的薄弱环节,直接进行有效的处理,使边坡的稳定性得以提高,并就边坡锚注加固施工中存在的技术问题,提出相应的处理措施。Through the mechanics deduction from the model of bolting grouting method in jointed and fractured slope, some conclusions that bolting grouting reinforcement can improve shear strength and shear stiffness of rock slope weakness plane are made. It points out that bolting grouting interactive structure can make full use of each material potency of bolting and grouting, which prevents the disadvantage when only one of them is considered. Combined with reinforcement engineering practice of the expressway, the main technical features and process flow of the bolting grouting are introduced, it points out that high-pressure cement grouting can make effective treatment di- rectly for the weak link of rock slope, and improve the slope stability fundamentally. According to the analyzed technical problems in the construction of bolting grouting for slope, the treatments are brought forward.

关 键 词：锚注加固 节理 抗剪强度 抗剪刚度 边坡 

分 类 号：P542.33[天文地球—构造地质学]