Abstract:Dongying city is an important coastal economic opening area in Shandong province. In recent years, land subsidence has seriously restricted the economic and social development of the city. Three dimensional land subsidence model can realize the information and visualization of land subsidence monitoring data. According to geological conditions and the occurrence of mineral resources, 3D geological structure model is divided into 13 standard layers. 540 deep drillings have been collected in Dongying city, and the depth is more than 2000m. Among them, the depth of 82 holes can 4000~5000m. In accordance with the standard layers, all drill holes were standardized, and threedimensional geological structure model has been established by using MapGIS K9. It is the first time to realize the simulation and analysis of geological structure model in Dongying city at a great depth, which is based on the division of mineral resources. Then, land subsidence model has been established based on date of 19 ground subsidence monitoring stations, which makes the dynamic preview and monitoring on the ground subsidence possiblely. This study has provided a scientific basis for the evaluation and control of land subsidence in Dongying city.
