东营市地面沉降模型的构建与应用

东营市是山东省内重要的沿海经济开发区,近年来地面沉降灾害制约了东营市的经济社会发展。构建三维地面沉降模型可以实现东营市地面沉降监测资料的信息化、可视化。根据东营市地质条件及矿产资源赋存层位,将三维地质结构模型的标准分层分为13层;而后收集了东营地区深钻540个,深度均在2 000 m及以上,其中有82个能够达到4 000~5 000 m甚至更大深度,按照标准分层,对所有钻孔进行标准化处理,并进一步利用Mapgis K9软件建立了三维地质结构模型,首次实现了以矿产资源层位划分为依据的大深度的东营市三维可视化地质结构模型模拟分析。同时,结合东营市19座地面沉降监测站数据,构建了地面沉降模型,首次实现了地面沉降的动态预演及监测,为东营市地面沉降评估与防治提供了科学依据。

Construction and Application of Land Subsidence Model in Dongying City

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.