Study And Application Of The Valuation Method For Coal-bed Digital Modeling

In order to make mine project management personnel that can be intuitive and dynamic understanding three-dimensional morphological feature of underground deposit structure, we can make use of spatial information technology, digital information technology and computer technology to create three-dimensional geological deposit model.However, owing to the limited geology prospecting information and reduce unnecessary waste of capital cost, so we urgently need the applied research to spatial interpolation method.This paper summarizes the advantages and limitations of the trend surface method, the weighted least-square fitting method, the inverse power method, the spline function method, the triangular net Linear interpolation method, the multi-faced function method, the bilinear polynomial interpolation method and mobile fitting method, and combines mathematical theory, deposit occurrence conditions and the distribution characteristics of the original sampling data that proposed an effective manner of the parameters optimization selection.for the multi-faced function method and the mobile fitting method need to solve a large number of linear equations problem to carry out analyzation, and improve that the pathological equations to solve elevation values arises from distortion phenomena.The author proposed the selection of several valuation methods to faults and boundary on the special structure of the deposit.The author uses the object-oriented VBA programming language to develop and implement visualization operation and testing the inspection mechanism of the interpolation point accuracy of the commonly used interpolation methods in the Autocad platform, so that the deposit geology modeling is more accurate and reliable.According to the deposit occurrence conditions of the Yilan open pit coal mine in DaLian River and the distribution situation of sampling data, using the appropriate interpolation method to make establishment of the Yilan open pit coal mine geology modeling in DaLian River get a successful application.