模拟煤层气泄露扩散的高斯改进模型  

Gaussian diffusion model on leakage and diffusion simulation of coalbed methane

作　　者：朱黎明[1] 芮小平[2] 李尧[3] 余学祥[1] 

机构地区：[1]安徽理工大学测绘学院,安徽淮南232001 [2]中国科学院大学资源与环境学院,北京100049 [3]内江师范学院计算机科学学院,四川内江641100

出　　处：《计算机工程与设计》2014年第5期1754-1759,共6页Computer Engineering and Design

基　　金：国家科技重大专项课题基金项目(2011ZX05039-004)

摘　　要：为准确预测煤层气泄露污染的扩散路径及范围,结合了我国煤层气低压、管网密集和地处山区的特点,以高斯扩散模型为基础,提出适合煤层气泄露扩散模拟的高架点源模型和山谷模型,根据第二代大气扩散模型对地形产生影响的处理方法,研究了适合山区的扩散模型。以山西省沁水盆地南部潘河区块煤层气集输工程为例,模拟了煤层气泄露扩散,并与野外实验数据进行比较,发现提出的煤层气泄漏扩散模式能够较好地模拟煤层气在空气中的扩散分布状况。To forcasting the polloution area and the diffusion path of coalbed methane accurately, the features of coal-bed gas reservoir in China low pressure, intensive gas pipeline network and locating in the mountain area is taken into consideration. Then the elevated point source model and valley model are proposed for the simulation of coalbed methane （CBM） leaking and diffusing which is based on Gaussian diffusion model. The method of dealing with the terrain＇s affect from the second generation atmosphere diffusion model is learned, a diffusion model is proposed creatively, which suits for mountainous areas. Then the diffusion of CBM in Qinshui county Shanxi province is taken for example, the system simulates CBM pollution. By compara-ting predicted values with observated values, the result shows distribution of CBM in the air.

关 键 词：煤层气 扩散路径 高斯扩散模型 高架点源模型 山谷模型 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论]