江西省寻乌县城南滑坡稳定性影响参数分析

【作者】 刘兵；

【导师】 黄长生；

【作者基本信息】 江西理工大学 ， 安全技术及工程， 2008， 硕士

【摘要】 近年来,随着我国大量工程建设的进行,由此产生的地质灾害层出不穷,特别是地质条件复杂的山区修路切坡和建房切坡产生的滑坡灾害。因此,滑坡稳定性将直接关系到人民的生命财产安全。边(滑)坡稳定性影响因素分析和稳定性计算方法很多。如何对边(滑)坡的稳定性做出准确的评价,如何确定边(滑)坡稳定性影响参数,是边(滑)坡研究中的重要问题,也是目前边(滑)坡治理设计中的瓶颈问题。本论文以江西省寻乌城南滑坡为工程背景,论文运用理正岩土软件及理论定性分析方法对对滑坡稳定性影响参数进行了分析;重点研究了该滑坡的滑带土的力学性质特征,通过勘查现场试验、室内土工试验、反演计算三种方法相结合分析研究,得出滑带土抗剪强度的建议值;对滑坡稳定性进行定量分析验算,计算出该滑坡在安全系数取1.3的情况下的剩余下滑力,提出滑坡整治方案建议。本论文内容共分为七章。第一章为绪论,介绍本文的研究动机、目的及研究方法;第二章为相关定义的解释与说明;第三章为寻乌城南滑坡工程简介及地质环境概况;第四章简要地说明了目前边(滑)稳定性评价的主要方法,对理正岩土3.6版程序作了介绍;结合寻乌城南滑坡工程实例,分析了影响滑坡稳定性的主要因素,对寻乌城南滑坡滑体及滑床稳定性做了定性评价,评价结论为该滑坡滑体暴雨时不稳定,滑床基本稳定。第五章首先对勘查现场试验所得岩土力学参数数据进行分析,其次利用岩土参数的试验结果进行统计归纳分析,第三步通过反演计算出滑坡滑带土可靠的岩土抗剪强度参数,最后通过上述三种方法相结合分析研究,提出滑带土抗剪强度的建议值;第六章利用前面章节的计算结果,对滑坡稳定性定量分析验算。并计算出该滑坡在安全系数取1.3的情况下的剩余下滑力,提出滑坡整治方案建议;第七章则为结论与展望,提出本研究总结及建议未来发展的方向。更多还原

【Abstract】 In recent years, the geologic hazards occur frequently with constructing of many engineering, especially in complex geological regions where cut slope for building road and house are more liable to occur coast disaster. Therefore the coast stability will directly affect the safety of people’s lives and properties. There are many methods for analysis of influence factors of slope stability and stability calculation. It’s an important task on how to evaluate the stability accurately and how to confirm indexes which influence stability of slope in slope research, and it is also an bottleneck problem in fathering design of slope at present.This paper is based on a fathering design of slope in the south of Xunwu county in Jiangxi province, Backward analysis of coast parameters were studied used LiZheng software and Theory qualitative. It have proposed program for slope, first analysis the sensitivity that the connection between the slope stability and important factors, second propose the recommended value of C and ? of slope soil, third calculate the extra thrust of slope. qualitative checking and analysis for the slope stability based on previous calculation results. Then calculates the remaining slide power if safety parameters of coast is 1.3 and proposes the plan.The paper can be divided into seven sections.The first section is introduction that shows the study motive, destination and study method.The second section is show the related concept.The third section shows project introduction of slope in the south of Xunwu county and overview of geology and environment.The forth section introduces and make sure the main factors which impact on slope. It includes engineering geology, hydrogeology, and other factors which are earthquake, weathering, human activities, and so on. This section makes a qualitative analysis of slope sensitivity;The fifth section proposes the recommendation value of shear strength of slope soil through following three steps. First, it analyses the total data from field test; second, it makes statistical analysis and summarized analysis for the field test result of geotechnical parameters of slope; third, a shear strength parameters of slope soil is gained by used backward calculation.The sixth section makes qualitative checking and analysis for the slope stability based on previous calculation results. Then calculates the remaining slide power if safety parameters of coast is 1.3 and proposes the plan.The seventh section is conclusion and outlook, shows the conclusion of the study and development direction in the future.更多还原