Study On The Monitoring Mode Of D-InSAR And Its Key Technologies For Surface Subsidence In Industrial And Mining Areas

In order to control the spatial distribution of the surface subsidence and its residual subsidence and weaken the environmental disaster caused by the surface subsidence in industrial and mining areas, the monitoring mode and the key technical problems of D-InSAR for surface subsidence in industrial and mining areas are studied in this paper. On the basis of referring to extensive literature, Firstly, practical problems and restrictive factors of the mining surface subsidence using D-InSAR monitoring are analyzed, and small baseline D-InSAR technique is used to study the mine surface subsidence aiming at surface subsidence characteristic caused by the mining, then a few typical subsidence areas of Kailuan mining area and Yanzhou mining area are taken as examples, and the temporal and spatial evolution of the surface subsidence in several faces is detailedly analyzed. On this basis, experimental research of surface movement and deformation law based on the results of D-InSAR monitoring is carried out, and dynamic subsidence curves of the maximum subsidence point and subsidence velocity contours of the subsidence D in Jinggezhuang mine are gained, which can provide the data support for guiding the buildings, railways and other infrastructure construction and distribution in the mining area. Finally, according to the surface subsidence problem of mining cities caused by the residual subsidence, coherent target small-baseline time series InSAR monitoring method is studied, then the specific process of surface subsidence data processing in mining cities is designed, and the feasibility of this method in monitoring surface subsidence of mining cities is verified by the example of Tangshan city, the temporal and spatial evolution characteristics of the surface subsidence in the main city of Tangshan and its surrounding areas are analyzed in detail, and the risk zones caused by the surface subsidence are studied, then corresponding countermeasures and recommendations are provided for the related work in future as a reference.