Abstract:

Modeling and visualizing ground fissures caused by mining in three dimensions can facilitate studying the shape and contributing factors of fissures,and also provide scientific support for monitoring mining subsidence and restoring ecological environment.The existing 3D modeling methods and software mainly focus on buildings,pipes,geologic bodies et al.,which can not be directly used to model and represent ground fissures.In view of this problem,using 3D terrain modeling,fractal theory and spatial interpolation,this paper proposes a 3D modeling method of ground fissures based on geometric shape parameters,and implements the 3D visualization of fissures through ArcEngine platform.This paper selects the Dongxia Mining Area in Gansu province as study area,and create 3D models of all ground fissures in this area from the predicted distribution and shape parameters.The comparison results between ground surveyed data,high resolution images and the created models validate the proposed method can accurately demonstrate the shape,stretching and details of ground fissures.

Key words: ground fissures, 3D modelling, fractal theory, visualization