基于钻孔摄像技术的水平孔节理裂隙发育特征研究

Study of Development Characteristics of Joint Fracture in Horizontal Drilling Based on Borehole Camera Technology

传统钻孔摄像技术,在结构面产状确定方法的应用上,主要局限于垂直钻孔。该文介绍了国内某大型地下水封油库水平向水幕钻孔成像资料,通过空间转换和几何投影关系,解译了水平向钻孔结构面产状的确定方法,并对水平向水幕钻孔结构面产状进行了采集统计分析,研究了钻孔结构面产状,分析了钻孔所处位置的节理裂隙发育特征,为水幕与主洞之间的水力联系提供了重要依据。

The application of traditional borehole camera technology in the determination of the structural surface occurrence is mainly confined to the vertical drilling. This paper introduces the image data of hori- zontal water curtain drilling in a large domestic underground water-sealed oil storage. The determined method of structural plane attitude in horizontal borehole is interpreted through the relationship of space transformation and geometrical projection. And the collection statistical analysis of the occurrence of hori- zontal water curtain structure wall is carried out. The occurrence of the borehole structural surface is stud- ied, and the development characteristics of the joints fracture are analyzed. It provides an important basis for the hydraulic connection between the water curtain and the main tunnel.