基于地基合成孔径雷达的危险边坡变形非接触实时监测  

Non-contact Real-time Deformation Monitoring of Dangerous Slope Based on GB-InSAR

作　　者：代威 蒋楠 杨兴国[1] 周家文[2] 李海波 DAI Wei;JIANG Nan;YANG Xingguo;ZHOU Jiawen;LI Haibo(Collge of Water Resources and Hydropower,Sichuan University,Chengdu,Sichuan 610065,China;State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu,Sichuan 610065,China)

机构地区：[1]四川大学水利水电学院,四川成都610065 [2]四川大学水力学与山区河流开发保护国家重点实验室,四川成都610065

出　　处：《水利与建筑工程学报》2022年第6期69-74,共6页Journal of Water Resources and Architectural Engineering

基　　金：国家自然科学基金青年项目(42102316);四川省青年科技创新研究团队项目(2020JDTD0006)。

摘　　要：岩体崩塌失稳是边坡工程中最常见的地质灾害类型之一,对危险边坡开展实时监测以揭示其变形响应特征,对于边坡的应急预警、综合防控意义重大。本文以某水电站导流洞进口边坡为研究对象,采用地基合成孔径边坡雷达与三维激光扫描融合的监测技术,通过坐标转换,建立三维激光扫描坐标系与GB-InSAR坐标系之间的对应关系,将雷达二维图像区域内的点与地形点进行匹配,实现了对边坡的三维整体变形实时监测,并基于监测结果对边坡的整体稳定性和局部危岩体演化规律进行了深入分析。结果表明:该边坡整体稳定性较好,但由于岩体破碎,节理裂隙发育,局部危岩区域稳定性较差,部分区域变形受降雨、施工扰动等影响显著。Rock collapse is one of the most common types of geological disasters in slope engineering.It is sudden and destructive,and poses great threats to the traffic road,construction personnel and machinery below.Real-time monitoring of dangerous slope can reveal its deformation response characteristics,which is of great significance for emergency warning and comprehensive prevention and control of slope.In this paper,the slope at the entrance of diversion tunnel of a hydropower station is taken as the research object and a monitoring technique combining GB-InSAR and terrestrial scanning laser was adopted.Through coordinate transformation,the corresponding relationship between the terrestrial scanning laser coordinate system and the GB-InSAR coordinate system is established,and the points in the 2 D radar image area are matched with the terrain points,so as to realize the real-time monitoring of three-dimensional integral deformation of the slope.Based on the monitoring results,the overall stability of the slope and the evolution law of local dangerous rock mass are deeply analyzed.The results show that the overall stability of the slope is good,but due to the fragmentation of rock mass and the development of joints and fissures,the regional stability of local dangerous rock is poor,and the deformation of some areas is significantly affected by rainfall and construction disturbance.

关 键 词：危险边坡 基地合成孔径雷达 三维激光扫描 非接触实时监测 数据融合 

分 类 号：TU457[建筑科学—岩土工程]