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选取煤火现象较为严重的乌达煤田火区为研究区,以高斯烟羽模型为气体扩散模拟算法,在ArcGIS平台上采用点源模拟的方式对乌达煤田火区煤火释放主要气体——CO,CO2,CH4,SO2的影响范围和浓度分布进行模拟。结果表明,在西风盛行的乌达区,污染气体沿着下风向扩散,其浓度分布呈现高斯分布特点;乌达城区处于较高浓度的影响区域,居民的生活环境受到了严重威胁。
Based on the Gaussian plume model as the gas diffusion simulation algorithm, the Wuda coalfield fire area with relatively serious coal fire phenomenon was chosen as the research area. On the ArcGIS platform, point source simulation was used to simulate the release of the main gas- The influence range and concentration distribution of CO, CO2, CH4 and SO2 were simulated. The results showed that in the westerly prevailing Wuda area, the pollutant gas diffused along the downwind direction, and its concentration distribution showed a Gaussian distribution. The Wuda urban area was in a higher concentration area and the living environment of the residents was seriously threatened.