Improving Reclamation’s Geologic and Geotechnical Investigations with Drill Parameter Recorder Technology
This project will install a Drill Parameter Recorder (DPR) to allow for real-time monitoring while drilling (MWD) of important fugitive parameters, such as: penetration rate, hold-back force, torque, thrust, rotational speed, mud or water flow rates and pressures, with depth and time. The parameters can be used to spatially correlate strata between borings, and identify areas of highly fractured rock, voids, clay seams, or weak/thin stratigraphic zones that may be washed-out or lost during drilling. Correlations also exist to specific energy (the energy required to drill a certain volume of rock), rock mass strengths and other components of the Rock Mass Rating (RMR) system. Given the real-time ability to generate detailed subsurface profiles of fracture zones or areas with higher permeability, DPR technology could be extremely valuable in increasing the effectiveness of foundation grouting programs; thereby helping to minimize seepage loss from water storage or conveyance structures.
Need and Benefit
Reclamation has drill crews that support several applications, including: instrumentation installation, subsurface characterization, investigations of structural deterioration, performance monitoring, water wells, etc. Enhancing our drilling investigation techniques is fundamental for improving the reliability of Reclamation's vast and aging infrastructure.
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