基于GIS北部湾填海造地地质灾害危险性评价系统的研究

发布时间：2019-06-30 21:38

【摘要】：2008年《广西北部湾经济区发展规划》获国务院批准实施后,北部湾沿海地区以前所未有的规模和速度兴建大量的大型工程和工业基地,为解决土地资源紧缺的问题,北部湾开始了大规模的填海造地工程。为避免填海造地工程潜在地质灾害,配合广西北部湾经济区的开发建设,建立一个北部湾填海造地地质灾害危险性评价系统是一项极具价值的研究。本文以广西科技攻关项目“广西北部湾填海造地工程的地质灾害问题研究”为依托,在研究北部湾填海造地区域的工程地质条件、调查常见地质灾害分布并分析其成灾机理的基础上,采用信息量模型建立了一个基于地理信息系统(Geographic Information System, GIS)的北部湾填海造地地质灾害危险性评价的系统。本文的研究主要包括： 1、研究北部湾填海造地地质灾害形成条件、分析发育机理。在此基础上,以北海铁山港区十万吨码头填海造地项目为例进行典型研究,分析表明影响该区域地面沉降灾害的主要因素是填海深度及载荷大小。 2、建立北部湾填海造地地质灾害危险性评价的系统。以ArcGIS Engine、Visual Studio2008为开发平台,采用SQL Server数据库和VC++语言面向对象编程建立北部湾填海造地地质灾害危险性评价的系统,通过人机对话,首先实现对北部湾填海造地区域灾害信息管理及查询、信息数据处理及研究区域信息数据的空间分析,其次,采用信息量模型实现对北部湾填海造地区域的地质灾害危险性评价,实现地质灾害信息及评价结果的高效管理。 3、采用建立的评价系统对填海造地形成的北海铁山港区十万吨码头区域的地面沉降灾害进行危险性评价。评价结果表明与实际监测结果吻合较好,值得进一步完善、推广应用,达到防灾减灾预警预报的最终目的。
[Abstract]:After the Development Plan of Guangxi Beibu Gulf Economic Zone was approved and implemented by the State Council in 2008, a large number of large-scale projects and industrial bases were built in the coastal areas of Beibu Gulf at an unprecedented scale and speed. In order to solve the shortage of land resources, Beibu Gulf began a large-scale reclamation project. In order to avoid the potential geological hazards of reclamation engineering and cooperate with the development and construction of Guangxi Beibu Gulf Economic Zone, it is a valuable study to establish a risk assessment system for geological hazards of reclamation in Beibu Gulf. Based on the key project of Guangxi Science and Technology "Research on Geological hazards of Beibu Gulf Reclamation and Land Construction Project in Guangxi", based on the study of engineering geological conditions in Beibu Gulf reclaimed land area, the distribution of common geological disasters and the analysis of its disaster mechanism, a risk assessment system for geological hazards of reclamation in Beibu Gulf based on geographic information system (Geographic Information System, GIS) is established by using the information model. The main contents of this paper are as follows: 1. The formation conditions of geological disasters of reclamation in Beibu Gulf are studied and the development mechanism is analyzed. On this basis, taking the 100000 ton wharf reclamation project in Tieshan Port of Beihai as an example, the analysis shows that the main factors affecting the land subsidence disaster in this area are the depth and load of reclamation. 2. The risk assessment system of geological hazards for reclamation in Beibu Gulf is established. Taking ArcGIS Engine,Visual Studio2008 as the development platform, the object-oriented programming of SQL Server database and VC language is used to establish the risk assessment system of geological hazards for reclamation in Beibu Gulf. Through man-machine dialogue, firstly, the disaster information management and query, information data processing and spatial analysis of regional information data in Beibu Gulf reclamation area are realized. The information model is used to realize the risk assessment of geological hazards in the reclamation area of Beibu Gulf, and the efficient management of geological hazard information and evaluation results is realized. 3. The risk of land subsidence disaster in the wharf area of Beihai Tieshan Port area formed by reclamation is evaluated by using the established evaluation system. The evaluation results show that the results are in good agreement with the actual monitoring results, which is worthy of further improvement, popularization and application, and achieve the ultimate goal of early warning and prediction of disaster prevention and mitigation.
【学位授予单位】：广西大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P208;P694

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