基于GIS的工程地质环境评价系统分析

Analysis on the Assessment System of GIS-Based Engineering Geological Environment

剖析了工程地质环境的要素,并将其分为物质组成、地质结构、动力作用、边界条件和工程地质性质5个一级要素组;建立了基于G IS的工程地质环境评价系统流程,包括多源工程地质环境数据系统、G IS信息管理系统、G IS工程地质环境评价系统和G IS工程地质环境灾害风险评估和防治决策系统;并讨论了工程地质环境评价的G IS系统结构。这些研究成果为开展基于G IS的工程地质环境评价提供了理论基础。

In this paper, the five first-class constituent elements of engineering geological environment are analyzed, which include material composition, geological structure, dynamic effect, boundary condition and engineering geological properties; The four assessment information characteristics of engineering geological environment are summarized, then a GIS-based engineering geological environment assessment system workflow is established, which consists of four parts, i.e. Multi-source data system, GIS management system, GIS-based assessment system of engineering geological environment, risk assessment and prevention decision system of engineering geological hazards. After that the importance of assessment information normalization is discussed and two assessing models i.e. hierarchy analysis model and information weight model are introduced, and finally the GIS structure for engineering geological environment assessment is presented. These researches provide a theoretical basis for engineering geological assessment.