工程尺度地质结构三维参数化建模方法

doi:10.13722/j.cnki.jrme.2019.0673

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Abstract 3D geological modeling is a valid method to quantitatively study 3D spatial structure characteristics and variation laws. However，there are still some limitations in current geological modeling methods，such as excessive man-machine interaction，difficulty in updating and modifying feedback，and long modeling period. In this paper，a 3D parametric modeling method for engineering-scale geological structure based on NURBS is proposed. For engineering scale geological structure objects，this method includes parametric expression of deformation of geological curves and surfaces，mathematical definition of 3D geological parametric modeling，and mixed data structure model of engineering geology. Implementing parameterized importation of geological point data sets(multi-beam water depth points，contours，drilling points，etc.) in 3D visualization environment，parametric fitting of geological structural planes，parametric generation of geological contours. At the same time，a series of operations，such as parametric cutting and combination of surface and surface and volume are carried out. With the change of geological data sources，geological models can be updated dynamically to meet the requirements of modeling accuracy in different stages. Practical engineering application shows that the efficiency of this method is greatly improved compared with the traditional modeling method，which provides a new technical means for large-scale engineering geological object modeling.

Key words： rock mechanics geological structure engineering scale 3D geological modeling NURBS parametric modeling

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	Articles by authors
	LI Mingchao1
	BAI Shuo1
	KONG Rui2
	REN Qiubing1
	HAN Shuai1
	TIAN Huijing3

Cite this article:

LI Mingchao1,BAI Shuo1,KONG Rui2, et al. 3D parametric modeling method of engineering-scale geological structures[J]. , 2020, 39(S1): 2848-2858.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2019.0673 OR https://rockmech.whrsm.ac.cn/EN/Y2020/V39/IS1/2848

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