Novel modeling on numerical computing the geo-deformation information in coalmine based on the GIS-Excel

Numerical simulation modeling is a hotspot in the geological engineering computing field.Taking a fast Langrangian analysis of continua in 3 dimensions(FLAC) numerical modeling on computing the geo-deformation information caused by the mining subsidence in a coalmine for example,a new GIS-Excel modeling method is proposed to build geologic strata within the simulation range combined with the coal-seam dip angle of the underground mining working-planes.First of all,the coal-seam model of the numerical computing is built by using the geographic information system(GIS) according to the stripe-through principle and the calculating formula on the size of the model blocks in the paper defined,then the FLAC^(3D) numerical computing model of all geologic strata within the simulation range is also built based on the calculating formula of thickness of each stratum and the Excel fast computing advantages.The GIS-Excel method is good at the higher modeling accuracy,seldom making mistakes and consuming less time.The reliability and validity of the method is verified well by its practical applications in the coalmine area.

Numerical simulation modeling is a hotspot in the geological engineering computing field. Tak- ing a fast Langrangian analysis of continua in 3 dimensions （FLAC3D） numerical modeling on com- puting the geo-deformation information caused by the mining subsidence in a coalmine for example, a new GIS-Excel modeling method is proposed to build geologic strata within the simulation range combined with the coal-seam dip angle of the underground mining working-planes. First of all, the coal-seam model of the numerical computing is built by using the geographic information system （GIS） according to the stripe-through principle and the calculating formula on the size of the model blocks in the paper defined, then the FLAC3D numerical computing model of all geologic strata with- in the simulation range is also built based on the calculating formula of thickness of each stratum and the Excel fast computing advantages. The GIS-Excel method is good at the higher modeling accuracy, seldom making mistakes and consuming less time. The reliability and validity of the method is veri- fied well by its practical applications in the coalmine area.