数字散斑技术在地震边坡模型中的应用  

Application of Digital Speckle Correlation Method in Seismic Slope Model

作　　者：许江波[1,2] 王定伟[1,2] 杨国香[1,2] 伍法权[1,2] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029 [2]中国科学院工程地质力学重点实验室,北京100029

出　　处：《重庆交通大学学报（自然科学版）》2014年第4期95-100,共6页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：中国地质调查局地质调查工作项目(1212011220147);中国科学院重点部署项目(KZZD-EW-05-02)

摘　　要：地震边坡模型试验中,一般采用在坡体内埋设观测装置对模型试验进行测量。监测仪器存在安装麻烦、监测数据有限等缺点,导致不能得出全场位移场,同时在振动过程中,仪器与岩土体发生脱离,使得测得的参数不准确甚至是失真。在监测过程中采用了数字散斑技术,较好地得出全场位移场,为地震模型试验提供了一种新的测量方法。由于其测量方法简单容易,测量结果比较直观,测量精度较高,可以实现自动化测量并且是一种无接触式测量技术,该方法相对于其他传统测量方法具有更好的应用前景。In the earthquake slope model experiment, monitoring devices were usually buried in the slope body to measure the model experiment. Due to the disadvantages of monitoring devices such as the complex installation and limited monitor data, the displacement field and the strain field couldn＇ t be obtained. And in the process of vibration, the monitor devices departed from the slope body, which caused the experimental data not accurate, even distortion. In order to solve this problem, the digital speckle correlation method was adopted in this experiment. The proposed method can gain the displacement field and the strain field well, and it also provides a new measurement method for the earthquake model experiment. Because the proposed measuring method is easy, the measurement results are rather intuitive, and its measuring accuracy is rather higher, it can realize automatically monitoring, which is a non-contact monitor technology. The proposed method has a better application prospect compared with other traditional measuring methods.

关 键 词：环境工程 数字散斑技术 地震边坡 全场位移场 模型试验 

分 类 号：P65[天文地球—地质学]