Alignment Control of Drilling Rods by Integrated Microchips-PPT Presentation

PPT Presentation

Pdf Summary

The presentation describes an integrated microchip system for monitoring and controlling the alignment of drilling rods during jet grouting, with applications to directional drilling and the construction of horizontal ground seals in Berlin.<br /><br />Microchips designed for jet-grouting rods are installed in special rod couplings. Electrical current is supplied to the rod, and a magnetic position reader detects the chips’ locations. Their positions can then be displayed on a monitor, helping operators track the drilling alignment and identify critical locations where adjacent columns may fail to overlap.<br /><br />The presentation also addresses verification of the cured jet-grouted columns. A trial setup measures column diameter, while vibration contact periods are recorded in cured columns. Scanning and measurement data are used to assess column geometry, including the cured-column radius and its relationship to the jet beam, rotation speed, and spacing between columns.<br /><br />Overall, the proposed approach combines real-time rod-position monitoring with post-construction assessment of column geometry. This can support more accurate directional drilling, reveal potential gaps in horizontal seals, and improve quality control during jet-grouting works.

Keywords

jet grouting

microchip system

drilling rods

directional drilling

rod alignment

magnetic position reader

horizontal ground seals

column geometry

quality control

Berlin