Design and Test of the Drill Core Orientation Detector
详细信息
- 责任者：Lu Guiying (School of Engineering ; CUG ; Wuhan 430074 ; China) ; Wu Xiaoming
- 刊名：Geology and Prospecting
- 出版年：2010
- 卷期：46(3)
- 关键词：定位 ; orientation ; 取心钻进 ; core drilling ; 岩心 ; cores
- 页码：p.537-541
- 图表：6 illus., 1 table, 19 refs.
- 分类号：2000
- issnNo：ISSN0495-5331
- isbnNo：CN11-2043/P
摘要
A drill core orientation detector is designed based on mechanical principle. In this paper, the installing method of HMR3300 and the gravers are presented. Calculation formula of the tool high-facing-angle is deduced. Then mathematical relations between the true value and calculated value of tool high-facing-angle, and between drilling core azimuth and inclined hole azimuth are determined. Based on these results, the drilling core azimuth calculation program is compiled. The measurement test shows that when the hole vertex angle is greater than 1 degree, the average measurement error is less than 3 degree. It meets largely the requirement of engineering.