基于光声组合测量的地质钻孔三维可视化研究

doi:10.13722/j.cnki.jrme.2022.0528

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摘要鉴于目前地质钻孔中孔壁光学图像信息在反映孔壁轮廓特征方面存在的局限性问题，同时，也为了丰富地质钻孔岩壁纹理和几何轮廓信息来源，提出一种基于光声组合测量的地质钻孔三维可视化方法，通过融合钻孔周向和轴向上的纹理图像与扫描轮廓信息来直观呈现钻孔岩壁的三维形貌特征，并解决孔壁光学图像重构、孔壁轮廓曲线重构、基于光学图像信息与声波数据同步融合的三维建模与数据可视化优化等一系列难题。首先，以能够实现钻孔精细化测量的光学和声学同步测量技术原理为基础，提出孔壁光学图像重构与孔壁轮廓曲线重构方法，实现不同深度钻孔孔壁纹理图像的拼接与孔壁三维轮廓建模；随后，在孔壁表面纹理和孔壁几何轮廓的基础上，建立光声组合测量数据之间的映射关系与融合机制，形成基于光声组合测量的地质钻孔三维可视化体系；最后，结合具体案例，完成地质钻孔的三维可视化与形貌特征分析，并验证了该方法的可行性和优越性。研究表明，利用光声组合测量方式获取到的钻孔数据更加丰富，形成的地质钻孔三维可视化模型能够有效提高地质钻孔孔壁数据解译和判读的准确性和客观性，为岩体结构的探测技术研究提供了一种新的技术方法与技术手段。

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	汪进超1
	王川婴1
	杜琦2
	罗鹏2
	黄俊峰3

关键词 ：岩石力学, 光声测量, 钻孔探测, 岩体结构, 孔壁可视化

Abstract：In view of the limitations of borehole optical image information in reflecting the borehole contour characteristics，and at the same time，in order to enrich the source of borehole texture and geometric contour information，this paper proposes a 3D visualization method of geological boreholes based on photo-acoustic combination measurement，which visually presents the 3D morphological characteristics of the borehole wall by integrating the circumferential and axial texture images and scanning contour information of the borehole. The method can solve a series of problems，such as borehole wall optical image reconstruction，contour curve reconstruction，3D modeling and data visualization optimization based on the synchronous fusion of optical image information and acoustic scanning data. Firstly，based on the principle of optical image and sound scanning synchronous measurement technology，which can realize the borehole fine measurement，a method of borehole wall optical image and contour curve reconstruction is proposed，which can realize the stitching of borehole wall texture images at different depths and the modeling of borehole wall 3D contour. Then，based on the borehole wall surface texture and geometric contour，the mapping relationship and fusion mechanism between the photo-acoustic combined measurement data are established，and a 3D visualization system of geological boreholes based on photo-acoustic combined measurement is formed. Finally，combined with a specific case，the 3D visualization and morphological feature analysis of geological borehole are completed，and the feasibility and superiority of this method are verified. The research shows that the borehole data obtained by the combined measurement of optical image and sound scanning is more abundant，and the 3D visualization model of geological borehole can effectively improve the accuracy and objectivity interpretation of geological borehole wall data，which can provide a new idea and method for the fine detection and research of geological borehole rock mass structure.

Key words： rock mechanics photo-acoustic measurement borehole detection rock mass structure borehole wall visualization

引用本文:

汪进超1，王川婴1，杜琦2，罗鹏2，黄俊峰3. 基于光声组合测量的地质钻孔三维可视化研究[J]. 岩石力学与工程学报, 2023, 42(3): 649-660.
WANG Jinchao1，WANG Chuanying1，DU Qi2，LUO Peng2，HUANG Junfeng3. Research on 3D visualization of geological boreholes based on photo-acoustic combination measurement. , 2023, 42(3): 649-660.

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http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2022.0528 或 http://rockmech.whrsm.ac.cn/CN/Y2023/V42/I3/649

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