CORS网区域重力场变化与地面稳定性跟踪监测方法A method of tracking and monitoring of regional time-varying gravity field and ground stability based on CORS network
章传银,李爱勤,党亚民,毛卫华,蒋涛,王伟,杨强
摘要(Abstract):
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%。
关键词(KeyWords): CORS站网;负荷形变;重力场变化;地面稳定性;地质灾害前兆
基金项目(Foundation): 国家重点研发计划项目(2016YFB0501702)
作者(Author): 章传银,李爱勤,党亚民,毛卫华,蒋涛,王伟,杨强
DOI: 10.16251/j.cnki.1009-2307.2019.06.004
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