基于BDS/GPS的自动化变形监测系统设计及应用

Design and application of BDS/GPS-based automatic deformation-monitoring system

研究了基于BDS/GPS的自动化变形监测系统设计与实现,及其在茜坑水库主坝中的具体应用实施.针对茜坑水库主坝监测实际情况,制定了相应的BDS/GPS融合数据处理方法.统计了2015年11月至2016年3月期间基于本系统获取的全部站点变形监测结果,系统故障率低于2.6%,监测精度水平方向优于2 mm,高程方向优于3 mm,且坝体下游方向位移与水库水位之间呈明显的正相关性,对水位和该方向位移进行了建模分析,模型拟合效果较好,表明Y方向变形主要由库水位变化引起.证明了本系统能够稳定、连续、高精度地获取土石坝变形结果.

In this paper,the design and realization of a BDS/GPS-based automatic deformation-monitoring system and its implementation in the key dam of Xikeng Reservoir are discussed. The corresponding data-processing strategy and methodology based on BDS and GPS observation data are proposed for this application case. Statistical data of the deformations obtained with this system during November of 2015 and March of 2016 are analyzed,and the results show that the system failure rate is lower than 2. 6% and its accuracy is better than 2 mm horizontally and 3 mm vertically. Also,an obvious positive correlation between displacements in the downstream(Y) direction and water level is revealed. Therefore,the regression analysis is employed here for modeling,and the model built fits well. Stable,continuous and high accuracy for the deformations of earth rock-filled dams is available with this system.