基于SBAS技术的公路采空区变形监测

Deformation Monitoring of Highway Mined-out Area Based on SBAS Technology

文章基于SBAS技术对重庆市某跨越煤矿采空区高速公路进行了变形监测,采用SBAS方法提取了煤矿采空区上方高速公路的高相干点时序沉降量与实地水准仪观测的沉降量进行了对比分析。研究发现:采用SBAS方法监测变形的最小误差为0.3mm,最大误差为12.8mm,中误差为4.5mm,表明SBAS技术可准确有效地对公路等线性建筑物进行沉降监测。

Based on SBAS technology, this article conducted the deformation monitoring of an expressway in Chongqing across the coal mine goaf, the SBAS method was used to extract the time sequence settlement of high-coherence points of the expressway above the coal mine goal, which was then compared with the actual settlement observed by the field level for comparative analysis.The study found that the minimum error of deformation is 0. 3 mm,the maximum error is 12. 8 ram, and the medium error is 4. 5 mm when using the SBAS method for monitoring,which indicates that the SBAS technology can accurately and effectively monitor the settlement of linear buildings such as highway.