基于双锥面镜成像的钻孔摄像系统研究

doi:10.13722/j.cnki.jrme.2017.0059

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摘要为了突破以往钻孔成像技术的基本假设(钻孔孔壁是圆柱面)和平面成像问题，从而实现钻孔内岩体结构的真三维成像，自主研发了一套基于双锥面镜成像的钻孔摄像系统。该系统主要由组合式双锥面镜、罗盘、光源、遮光罩、摄像装置和透明玻璃等部件组成，并给出了孔内双锥面镜立体像对成像的方法和全景像对图像的解算公式。通过系统测试与结果分析可知，该系统可以从2个不同角度对同一孔壁结构特性进行像对成像，并得到钻孔孔径的形态变化特征和孔壁细节的差异特征，实现了孔内360°岩体结构的全景立体像对成像和精细化探测。该系统设计巧妙、结构简单、易于实施，提高了对孔壁岩体细微结构的识别能力和探测的精度，有效推动了钻孔摄像技术的发展。

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	王川婴
	邹先坚
	韩增强

关键词 ：岩土工程, 钻孔摄像技术, 岩体结构, 双锥面镜, 立体像对成像

Abstract：In order to overcome the problems in the existing borehole imaging technology based on the assumptions of cylindrical wall surface of borehole and planar imaging，a borehole camera system based on the biconical mirror imaging technology is developed to realize the true three-dimensional imaging of rock structures around borehole. This system is mainly composed of a biconical mirror，a compass，a light source，a hood，a camera and transparent glasses. This paper gives a stereopair imaging method of double-cone mirror for the imaging of borehole wall and the solution formulas to match the panorama stereopair image. The results of system testing and analysis show that this system can obtain the morphological characteristics of borehole and the feature difference of hole-wall details from the imaging of the same borehole structures in two different directions. This system realizes the panoramic stereopair imaging and precise detection of rock features inside borehole with the vision angle up to 360°. The system is simple in structure and easy to implement.

Key words： geotechnical engineering borehole camera technology rock mass structure double-cone mirror stereopair imaging

引用本文:

王川婴，邹先坚，韩增强. 基于双锥面镜成像的钻孔摄像系统研究[J]. 岩石力学与工程学报, 2017, 36(9): 2185-2193.
WANG Chuanying，ZOU Xianjian，HAN Zengqiang. Study of borehole camera system based on biconical mirror imaging technology. , 2017, 36(9): 2185-2193.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2017.0059 或 http://www.rockmech.org/CN/Y2017/V36/I9/2185

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