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本文主要介绍了全景式井中电视的工作原理和组成,并简要阐述了其解释原理,主要应用于某些地区钻孔的岩芯取样率较低,不能用较完整的岩芯来反映地下地质特征的情况。利用全景式井中电视对某大型水电站坝址区的钻孔进行了电视摄像,查明了钻孔内部不同深度的裂隙发育情况、风化夹层以及破碎带等现象。此外,通过资料处理,对岩芯进行了三维还原,真实地再现了钻孔内部的地下地质状况。
This paper mainly introduces the working principle and composition of TV in panoramic wells and briefly explains the principle of interpretation. It is mainly used in some areas where core sampling rate is low and can not reflect the underground geological features with more complete core Case. The panoramic borehole TV was used to carry on the television camera to the borehole in the dam site of a large hydropower station. The phenomena of fracture development, weathering intercalation and broken belt in different depths of the borehole were identified. In addition, through the data processing, the core was three-dimensional reduction, truly reproduce the underground geological conditions within the borehole.