Abstract:

For analyzing the regulation of surface residual deformation above old goaf, the surface residual deformation regulation above Xinhuai factory by remote sensing interpretation method and surface residual deformation monitoring is studied, and the dynamic residual deformation regulation with historical archive data and real-time data monitoring based on GM(1,1) model is predicted. According to the inversion of historical archive data. The result shows that the maximum sinkage is 100 mm from January 2009 to December 2011; the maximum residual sinkage is 55 mm from January 2012 to December 2013; the residual subsidence of surface monitoring point is stable. The research result could provide reference for the building foundation residual deformation monitoring work above old goaf.

Key words: old goaf, surface residual deformation, D-InSAR, monitoring of surface movement and deformation, GM (1,1)