刘亚坤

个人信息Personal Information

教授

博士生导师

硕士生导师

任职 : 水利学院副院长,水力学研究所所长,工程水力学实验室主任

性别:女

毕业院校:大连理工大学

学位:博士

所在单位:水利工程系

学科:水力学及河流动力学

联系方式:0411-84708509

电子邮箱:liuyakun@dlut.edu.cn

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A measurement system applicable for landslide experiments in the field

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论文类型:期刊论文

发表时间:2016-04-01

发表刊物:REVIEW OF SCIENTIFIC INSTRUMENTS

收录刊物:SCIE、EI、PubMed、Scopus

卷号:87

期号:4

页面范围:044501

ISSN号:0034-6748

摘要:Observation of gravity erosion in the field with strong sunshine and wind poses a challenge. Here, a novel topography meter together with a movable tent addresses the challenge. With the topography meter, a 3D geometric shape of the target surface can be digitally reconstructed. Before the commencement of a test, the laser generator position and the camera sightline should be adjusted with a sight calibrator. Typically, the topography meter can measure the gravity erosion on the slope with a gradient of 30 degrees-70 degrees. Two methods can be used to obtain a relatively clear video, despite the extreme steepness of the slopes. One method is to rotate the laser source away from the slope to ensure that the camera sightline remains perpendicular to the laser plane. Another way is to move the camera farther away from the slope in which the measured volume of the slope needs to be corrected; this method will reduce distortion of the image. In addition, installation of tent poles with concrete columns helps to surmount the altitude difference on steep slopes. Results observed by the topography meter in real landslide experiments are rational and reliable. (C) 2016 AIP Publishing LLC.