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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。
In order to break through the basic assumptions of drilling imaging technology (cylindrical surface of borehole is a cylindrical surface) and the problem of plane imaging in order to realize true three-dimensional imaging of rock mass structure in borehole, a set of drilling based on double cone mirror imaging Hole camera system. The system consists of a combination of double cone mirror, compass, light source, light shield, camera and transparent glass and other components, and gives the method of imaging the double conical mirror in the hole and the panoramic image solution Calculate the formula. Through system test and result analysis, it can be seen from two different angles that the system image structure of the same hole wall image, and the morphological characteristics of the hole and the hole wall details of the difference characteristics of the hole to achieve a 360 ° Panoramic stereo pair imaging and fine detection of rock mass structure. The system is ingeniously designed, simple in structure and easy to implement, which improves the recognition ability and accuracy of fine structure of the hole wall rock mass and effectively promotes the development of borehole imaging technology.