SAA测量技术及其在边坡监测中的应用研究

发布时间：2018-02-23 01:32

本文关键词： 边坡变形监测阵列式位移测量技术试验可行性　出处：《南京大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着人类工程活动的强度不断加剧和规模的不断扩大,边坡失稳导致的滑坡地质灾害日益严重。边坡监测是边坡稳定性评价必不可少的工作,也是滑坡预测预警的重要手段。为了满足现代边坡工程监测的需求,近年来,一种新型的监测技术一阵列式位移测量技术(简称SAA)发展起来了。本文根据SAA和边坡变形的特点,开展了对阵列式位移测量技术的研究。设计了 PVC管三点弯加载试验、工字钢梁振动试验、边坡开挖及加载试验,对阵列式位移计的测量结果及其在边坡变形监测中的应用进行了研究,并取得了如下成果:(1)总结了现阶段边坡变形监测的研究现状,介绍了阵列式位移监测技术的基本原理、特点,论述了 SAA应用于边坡变形监测的优越性。(2)根据边坡变形的特点,设计了PVC管三点弯试验。分别采用百分表、分布式光纤感测技术和SAA对位移变形进行了对比测量,验证了 SAA的可靠性。(3)设计了工字钢梁振动试验模型,并采用光纤光栅位移计与SAA的测量结果进行对比分析,证明了 SAA对振动测量的可行性。(4)设计了室内边坡开挖模型,对边坡开挖和加载进行了模拟试验。采用了SAA对边坡位移变形进行了测量,分析了 SAA对边坡变形测量的可行性。研究成果表明:SAA作为一种新兴的监测技术,在边坡监测中具有广阔的应用前景。
[Abstract]:With the increasing intensity and scale of human engineering activities, the landslide geological hazards caused by slope instability are becoming more and more serious. Slope monitoring is an essential work for slope stability evaluation. It is also an important means of landslide prediction and early warning. In order to meet the needs of the modern slope engineering monitoring, a new monitoring technique, called "Saa", has been developed in recent years. According to the characteristics of SAA and slope deformation, The research of array displacement measurement technology is carried out. The three-point bending test, I-beam vibration test, slope excavation and loading test of PVC tube are designed. The measurement results of array displacement meter and its application in slope deformation monitoring are studied, and the following results are obtained: 1) the present research status of slope deformation monitoring is summarized, and the basic principle of array displacement monitoring technology is introduced. According to the characteristics of slope deformation, the three-point bending test of PVC pipe is designed. The displacement deformation is measured by using percentile, distributed optical fiber sensing technology and SAA, respectively. The reliability of SAA is verified. The vibration test model of I-beam is designed and compared with the measured results of SAA. It is proved that the feasibility of SAA for vibration measurement is the feasibility of designing the indoor slope excavation model. Simulation tests on slope excavation and loading are carried out. The displacement and deformation of slope are measured by SAA, and the feasibility of measuring slope deformation by SAA is analyzed. The research results show that SAA is a new monitoring technology. It has broad application prospect in slope monitoring.
【学位授予单位】：南京大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P642.22;TU195.1

【相似文献】