Soil Sampling Core Drilling Video
In this video:
In 2014, Simon Fraser University required a soil coring drill for a project to study lake sediments in an environmentally protected area in South western British Columbia, Canada. The university owned an old vibracore system that was capable of coring approximate maximum of 6m in various soil conditions. The target sediments needed for this study were buried much deeper than their old system was capable. After considerations, they upgraded their equipment to the new Wink Vibracore WV2 operating system – equipped with N size drill rods to yield a sample diameter of 57mm and potential range of 15m (or more).
Scope and Sampling method The project research involved 8 coring locations across the subject area - which included natural wet areas, cultivated fields and close proximity to residential buildings on private land. An environmentally clean system with a minimal of physical disturbance was pivotal in obtaining permits and permissions.
The samples were captured inside plastic tubes that were inserted inside N Drill Rods (using Wink proprietary loading system). The cores were captured in 3m intervals at each location. After each drill string section was advanced 3m, the drill string was extracted and the filled plastic tubes were removed, sealed and labeled for location, date, depth and orientation to surface. Then the next 3m set of drill rods was loaded with plastic tubes and sent back down the existing hole to advance the next 3m in depth.
This sequential sampling was effective between 40 to 50 foot depths (12m to 15m refusal) at all eight sampling locations. The soil conditions were suitable to maintain the integrity of the hole after the drill rods were extracted (with minimal sloughing).
0:00 - 0:04 Project details described
0:04 - 0:06 Coring begins: Increase engine throttle
0:06 - 0:24 full power coring
0:24 - 0:26 decrease engine throttle