Drilling process monitoring for ground characterization during soil nailing in weathered soil slopes

摘要

This paper presents a drilling process monitor (DPM) and associated factual data and results for ground characterization in weathered volcanic rocks. The DPM is an in-situ device and can be used to automatically and continuously monitor the process of drilling production holes in the ground. Such holes are used for installation of soil nails, ground anchors or raking drains in slope stabilization. Percussive rotary drilling machines are usually used because of their productivity and flexibility. The DPM data are compared with other ground investigation data. The comparisons show that the DPM data can be used to characterize the ground conditions in weathered volcanic rocks. Such ground characterization can rationalize and enhance soil nail design and construction without any major increase in construction cost.