高速公路采空区路段沉降监测分析

Analysis of settlement monitoring in goaf section of expressway

从地基沉降和路基沉降两方面全面阐述了采空区路段路基沉降机理,并在施工过程中对路基的沉降变形进行了监测分析。结合高速公路采空区路段施工案例,布置沉降板和沉降观测桩对地基和路基的沉降变形进行监测,分析监测结果得出在路基施工阶段沉降变形量较大,完工静置阶段沉降变形逐渐变小,最终达到稳定状态,说明采空区处治后达到了预期效果。

From the two aspects of foundation settlement and sub-grade settlement,the mechanism of subgrade settlement in the goaf section is comprehensively explained,and the settlement deformation of sub-grade is monitored and analyzed during the construction process.Combined with the construction case of the goaf section of the expressway,the settlement plate and settlement observation pile are arranged to monitor the settlement and deformation of the foundation and roadbed.The analysis and monitoring results show that the settlement and deformation of the roadbed construction phase are large,and the settlement deformation gradually changes during the completion of the static phase.It is small and finally reaches a stable state,indicating that the expected results have been achieved after the goaf is treated.