摘要
由于道路工程穿越区域广阔,同时产生沉降的周期长,依靠传统手段对其进行大范围、长期的形变监测较为困难。选取某位于地下能源开采区的道路路基特征断面,分别应用了二等水准测量和小基线集干涉测量(SBAS-InSAR)技术对其沉降变形情况进行监测,验证SBAS-InSAR技术应用于道路工程区域沉降监测的可行性,并进一步利用InSAR技术全面分析道路路基全区域的沉降变化特征。InSAR技术监测结果与二等水准测量结果呈现较高程度的一致性,说明将InSAR技术应用于长线性工程的区域沉降监测是可靠的;进一步的时序监测结果显示,该道路工程沿线区域在2021年1月至2023年11月出现了区域性沉降,沉降速率集中在-20~0 mm/y。对现场调研查明,沉降产生的主要原因是地下水的过量开采。
Due to the vast area traversed by highway project and the long duration of settlement,it is difficult to conduct large-scale and long-term deformation monitoring using traditional methods.In the paper,a characteristic section of a highway located in an underground energy mining area is selected as the background,and second-order leveling measurement and small baseline subset InSAR technology are used to monitor its settlement deformation.The feasibility of applying SBAS-InSAR technology to highway engineering area settlement monitoring is verified,and InSAR technology is further used to comprehensively analyze the settlement change characteristics of the entire highway subgrade area.The InSAR technology monitoring results are highly consistent with the second-order leveling measurement results,indicating that the application of InSAR technology to regional settlement monitoring in long linear engineering is reliable.Further time-series monitoring results show that regional subsidence occurred in the area along the highway project from January 2021 to November 2023,with subsidence rates concentrated between-20mm/y and O mm/y.On site investigations have found out that the main cause of subsidence is excessive exploitation of groundwater.
作者
李保龙
王凌霄
韩昀希
沈宇鹏
LI Bao-long;WANG Ling-xiao;HAN Yun-xi;SHEN Yu-peng(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;Guoneng Huangda Railway Co.Ltd.,Dongying 257000,China)
出处
《公路》
北大核心
2025年第8期77-85,共9页
Highway
基金
中央高校基本科研业务重点资助项目,项目编号KCJBZY23003536。
