基于数字图像测量的边坡稳定性监测及其分析

发布时间：2018-10-16 21:38

【摘要】：近年来,随着我国的城市改造、房地产开发、工矿企业扩建以及高速公路和铁路的快速发展,产生了大量的边坡。边坡的稳定性问题关系到建筑物、交通设施、人身和财产的安全。为了尽可能地减小边坡失稳造成的危害,许多学者开始对边坡安全性的实时监测、预报展开研究,并取得了较好的研究成果。随着数字图像测量技术的快速发展,数字图像测量技术开始被运用于边坡的稳定性监测。本文的主要工作有以下几个方面:(1)对边坡稳定性监测技术做了深入的调查研究,对不同的边坡变形监测技术的优缺点以及边坡的稳定性评价分析方法进行了做了总结归纳。(2)基于数字图像测量技术建立一套完整的边坡变形监测系统,该监测系统包括CCD相机、标志牌、测量仪器、光端机以及测量软件等部分,对测量结果进行了误差分析。(3)对本文研究的边坡地质资料进行收集整理,根据边坡的现场情况对边坡的监测系统进行安装布设;采用ANSYS有限元软件建立边坡有限元模型并对边坡在不同损伤程度下进行计算分析;根据边坡的破坏特征,设定边坡损伤达到50%时发生的位移为预警值,当边坡损伤达到80%时发生的位移作为报警值。(4)运用ABAQUS软件对影响边坡的稳定性因素进行分析计算,得到边坡的稳定安全系数随着内摩擦角、粘聚力的增大而增大,随坡角的增大而减小。
[Abstract]:In recent years, with the urban transformation, real estate development, the expansion of industrial and mining enterprises and the rapid development of highways and railways, a large number of slopes have been produced. Slope stability is related to the safety of buildings, transportation facilities, persons and property. In order to reduce the damage caused by slope instability as much as possible, many scholars began to study the real-time monitoring and prediction of slope safety, and obtained good research results. With the rapid development of digital image measurement technology, digital image measurement technology has been applied to slope stability monitoring. The main work of this paper is as follows: (1) the slope stability monitoring technology is investigated deeply. The advantages and disadvantages of different slope deformation monitoring techniques and the evaluation and analysis methods of slope stability are summarized. (2) based on digital image measurement technology, a complete slope deformation monitoring system is established, which includes CCD camera. The error analysis of the measurement results is carried out in the following parts: (3) the slope geological data studied in this paper are collected and sorted. According to the site condition of the slope, the monitoring system of the slope is installed, the finite element model of the slope is established by using ANSYS finite element software, and the slope damage degree is calculated and analyzed, according to the failure characteristics of the slope, The displacement occurred when the slope damage reaches 50 and the displacement when the slope damage reaches 80 is set as the warning value. (4) the factors affecting the stability of the slope are analyzed and calculated by using ABAQUS software. The results show that the safety factor of slope increases with the increase of the angle of internal friction and cohesion, and decreases with the increase of angle of slope.
【学位授予单位】：广州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU43

【相似文献】