CORS网区域重力场变化与地面稳定性跟踪监测方法

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英文篇名：A method of tracking and monitoring of regional time-varying gravity field and ground stability based on CORS network 作者：章传银 ; 李爱勤 ; 党亚民 ; 毛卫华 ; 蒋涛 ; 王伟 ; 杨强 英文作者：ZHANG Chuanyin;LI Aiqin;DANG Yamin;MAO Weihua;JIANG Tao;WANG Wei;YANG Qiang;Chinese Academy of Surveying & Mapping;Zhejiang Institute of Surveying and Mapping Science and Technology;Zhejiang First Institute of Surveying and Mapping Engineering; 关键词：CORS站网 ; 负荷形变 ; 重力场变化 ; 地面稳定性 ; 地质灾害前兆 英文关键词：CORS network;;load deformation;;time-varying gravity field;;ground stability;;geological hazard precursor 中文刊名：CHKD 英文刊名：Science of Surveying and Mapping 机构：中国测绘科学研究院;浙江省测绘科学技术研究院;浙江省第一测绘院; 出版日期：2019-06-17 出版单位：测绘科学 年：2019 期：v.44;No.252 基金：国家重点研发计划项目(2016YFB0501702) 语种：中文; 页：CHKD201906004 页数：8 CN：06 ISSN：11-4415/P 分类号：35-42

摘要

为了实现地面稳定性降低时间与地点、持续作用时间与空间影响分布的全面跟踪监测,该文基于卫星定位连续运行站(CORS)站网观测数据,结合地表水、大气及海平面变化资料,提出了CORS站网时变重力场及负荷形变场精化的已知负荷移去恢复法,建立了基于时变重力场的确定性地面稳定性变化定量辨识准则。以丽水温州地区为例,利用2015—2017年CORS网及有关水文观测数据进行计算分析,根据40起已发生的历史地质灾害(险情)事件对结果进行验证:丽水温州地区的CORS网具备区域重力场变化与地面稳定性跟踪监测能力,具备地质灾害灾变过程追踪与前兆捕获能力,CORS站网的地质灾害前兆提前捕获率可达92.5%。
        To comprehensively track and monitor the time and location of triggering,duration and spatial distribution of ground stability decreasing,a method based on multiple observations of continuously operating reference stations(CORS)network,terrestrial water,atmospheric and sea level change and remove-restore technique was proposed for the refinement of time-varying gravity field and loading deformation field,and the deterministic quantitative identification criteria based on time variable gravity field was established.Datasets of CORS network and hydrological observations from 2015 to 2017 in the area of Lishui and Wenzhou were processed and analyzed as a case study,the results were validated by 40 known historical geological disaster events.The validation demonstrated that CORS network in the area of Lishui and Wenzhou was capable of tracking and monitoring the regional gravity field variations,ground stability and catastrophic process of geological hazards.The capture rate for geological hazard precursor based on CORS network reacheed 92.5%.

引文

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