【作者】 任亚龙；

【导师】 王念秦；

【作者基本信息】 西安科技大学 ， 矿产普查与勘探， 2009， 硕士

【摘要】 边坡稳定性分析是边坡病害防治的基础。为了适应我国飞速发展的山区基本建设的需要,以110国道辅线K49+010~K58+140段边坡为例,系统探讨人工边坡特征、病害特征、病害机理,进而探索边坡病害综合防治途径,不仅具有重要的理论意义,而且具有重要的社会意义、现实意义和经济价值。本研究基于岩质边坡展题,利用系统工程地质调查法、数学、力学分析法和计算机模拟技术,对研究区边坡进行了系统研究,具体包括:(1)在实际调查资料统计分析的基础上,归纳总结了研究区边坡变形破坏的5种类型:坡面溜坍、危岩落石、崩塌、坍塌和滑坡,探讨了其变形模式、破坏机理;(2)提出了研究区岩质边坡变形破坏主控因素是坡体贯通发育的节理和断层破碎带,并将其作为边界条件应用于模拟计算;(3)用刚体极限平衡法对K57+411~K57+536段边坡进行稳定性计算,用FLAC3D对该边坡位移场、应力场和塑性变形区进行模拟,并比较两种方法的结果;(4)基于机理认识、模拟计算,提出了岩质边坡的一般防护方案。在边坡稳定性分析及防护治理方面仍然存在很多问题,并亟待解决,本研究虽然进行了有益的尝试,但由于边坡自身的复杂,本研究成果仍是初步的,粗浅的,还需要不断付出更加艰辛的努力。更多还原

【Abstract】 Slope stability analysis is the basis for the prevention and control of slope failure. In order to adjust the needs to the rapid infrastructure development in China’s mountainous areas, use the assistant line of national road 110 slopes in K49+010~K58+140 as an example to discuss systematically slope characteristics, slope failure characteristics, failure mechanism, and then to explore a comprehensive prevention and control method. It is not only of great theoretical meaning, but also of importantly social and practical significance and economic value.The study based on rock slopes employs the means of systematical engineering geology survey, mathematics, mechanical analysis and computer simulation technology to systematically research the slopes along the road, including:(1)On the basis of on-spot survey data with the statistical analysis, deformation and the failure of slopes in the study area is divided into five types: the slided down of slope surface, dangerous and falled rocks, collapses, sloughings and landslides, then their deformation mode and failure mechanism were explored(2)The main controlling factors of slope failure in the study area are auxetic transfixion joints and fault fracture zones, and then apply them to calculation and simulation as boundary conditions.(3)The slope stability of K57+411~K57+536 with rigid body limit equilibrium method was calculated. And using FLAC3D to simulate the displacement field, stress field and plastic deformation zones and the results of two methods were compared finaly.(4)Based on the mechanism understanding, calculation and simulation, the general protection design of the rock slopes was put forward to.Studies have shown that many problems still exist and need to be resolved in the slope stability analysis and protective governance. The paper carries out a useful attempt, but because of the complexity of the slope itself, the results of this study are still preliminary and shallow. It is demanded to pay more arduous efforts to solve the problem fundamentally.更多还原