高清数字钻孔电视技术研发及其在水电工程中的应用

R&D of High-Resolution Digital Borehole TV Technology and Its Application in Hydropower Project

钻孔电视是能直观获得钻孔孔壁原状图像的地球物理方法,高清数字钻孔电视技术采用了先进的时间定时器,改进了光学工艺,加入了人-机互动调色功能的高分辨率摄像头,应用了消除电磁场对图像影响的处理技术,使其具有高精度、高分辨率和高保真度等特点。在某水电站坝址和围堰深厚覆盖层可视化研究中,利用高清数字钻孔电视技术,可清晰地获得钻孔孔壁原状图像,从而有效地查明工区的地质情况,为顺利施工提供技术保障,并为建立"数字化电子岩芯库"奠定了坚实的基础。

Borehole TV is a geophysical approach of obtaining directly the original image of borehole wall.With advanced time-timer,improved optical technique,high-resolution camera with human-machine interaction of color adjustment,and eliminated impact of electromagnetic fields on the image data,high-resolution digital borehole TV technology has characteristics of high-precision,high-resolution and high-fidelity.It was applied to the research on the visualization of thick overburden layer of the dam site and the cofferdam of a hydropower station.High-resolution original images of borehole wall were obtained,and the geological conditions of the project area was detected.The technology provides technical support for the project construction,and lays foundation for digital electronic rock core database.