边坡稳定性论文长昆客专怀化段板溪群板岩质边坡稳定性的研究.docVIP

边坡稳定性论文：长昆客专怀化段板溪群板岩质边坡稳定性的研究 【中文摘要】本文以长昆客专怀化D371-DK413段为工程背景,对板溪群板岩质桥基边坡稳定性进行研究,主要内容包括：1.对板溪群区域地质背景特征进行调查分析,了解其地质岩性、岩体结构、结构面产状、地质环境条件、边坡破坏特征；2.根据板理面产状及坡面产状之间的关系,对边坡进行分类；3.根据室内岩石剪切试验、现场岩体剪切试验,研究岩石、岩体的破坏规律以及不同边坡类型的潜在滑动面形状；4.采用岩体质量评价系统,结合经验方法,研究岩体参数取值,确定岩体物理力学参数建议值；5.以梨子溪大桥右岸桥基边坡为例,采用极限平衡法,研究在施工前、施工阶段、营运阶段的顺向板岩质边坡在天然、综合振动效应(列车+地震)、暴雨工况下的稳定性。6.以梨子溪大桥右岸桥基边坡为例,采用有限??方法,研究在施工前、施工阶段、营运阶段的顺向板岩质边坡在天然、综合振动效应(列车+地震)、暴雨工况下的稳定性。7.基于上述分析结果,对顺向板溪群板岩质桥基边坡进行稳定性评价。 【英文摘要】This paper studys the stability of Banxi slate slope under bridge abutment load,based on the project background of the Huaihua section (DK371 to DK413) of the passenger transportation railway from Changsha to Kunming. The main contents include:1. Investigate the geological background characteristics in banxi regional,and understand geological lithology,rock mass structure,structure plane occurrence,geological environment and law of slope failure.2 According to the relationship of occurrences between schistosity and slope plane,classify slope type.3. Using the methods of both the rock shear test in lab and the mass sheer test in field,study the failure law of rock and mass,and the shape of sliding surface in different slope classification.4. Use rock quality evalution system,and combine with empirical methods to study the value of rock mass parameters and determine the suggested values of the physical and mechanical parameters of rock mass.5. Taking the right bank slope of the Pears River Bridge for example and using the limit equilibrium method,study the stability of dip slate slope under the load cases of natural condition, integrated vibration effect (train and earquake) and heavy rail during the periods of pre-constuction,construction phase and operation phase.6. Taking the right bank slope of the Pears River Bridge for example and using the finite element method,study the stability of dip slate slope under the load cases of natural condition, integrat