可配置地质环境评价系统研究与应用

地质环境评价是掌握地质环境时空格局、变化趋势,开展地质环境防治保护管理工作的必要前提和重要手段。根据不同的应用目的,地质环境评价需采用不同的指标体系和数据,而且随着地质环境业务的发展,指标体系和数据也会不断扩展和变化。为了适应地质环境评价发展的需要,本文提出并研发了可配置的地质环境评价系统,该系统围绕地质环境评价核心过程,通过配置层可以对地质环境评价指标因子及权重、指标数据源及获取方法、指标评价计算方法,以及指标分级标准与空间可视化方法等多个环节进行灵活设置。与传统的地质环境评价软件相比,可避免地质环境评价指标或数据源发生变化时,需要重新进行软件编码、重新组织数据库等问题。唐山市应用实践表明,该系统具有良好的可配置能力、扩展性和应用性。

Research and Application of Configurable Geological Environment Evaluation System

Geological Environment Evaluation (GEE) is not only the necessary pre-condition to master the temporal-spatial distribution pattern and change trend of geological environment, but also the critical method for conducting the prevention & protection management work of geological environment. There are diverse evaluation indices and corresponding computing models for different thematic and purposeful GEE. Meanwhile, in the big data era, the geological environmental data are always characterized to be of multi-sources, heterogeneous formats and storage modes, as well as having diversified service patterns. As a result, the geological environment evaluation system (GEES) is necessary to meet the above changes and requirements. Firstly, this paper puts forward the concept model of GEE, and analyzes the general workflow of GEE. Secondly, the authors propose and design a configurable software method for GEES. Based on the core process of GEE, this method can configure not only the indices and their weights, but also the indices' data sources and data retrieving measures, indices' value dimensionless processing approach, the computing approach of evaluation value according to the evaluation spatio-temporal extent, as well as the classification and spatial visualization of the indices and evaluation results. Finally, with the support of geography information technology and Java programming language, a Configurable Geological Environment Evaluation System (C-GEES) is developed. It includes five logic tiers from the bottom up, i.e. the data tier, index tier and model tier as well as the function tier and service tier. Specially, the function tier is divided into two layers: one is the configuration layer which mainly implements the above mentioned configuration functions for system administrators, and the another is the application layer which provides lots of data querying and browsing, evaluation, and analysis functions for users. It provides the one-click or step-by-step GEE with different evaluation indices and application purposes. A verification test is conducted in Tangshan city of Hebei province, China. The result shows that C-GEES is good at configuration which makes it powerful in its expansibility and applicability.