Boorlogboeken

Boorlogboeken, a Dutch term roughly translating to "drilling logbooks" or "boring records," are essential documents used in the fields of geotechnical engineering, civil engineering, and geology. They meticulously record all activities and observations made during the process of drilling boreholes for various purposes, such as subsurface investigations, foundation design, groundwater monitoring, or resource exploration.

A typical boorlogboek contains detailed information about the drilling operation itself, including the date and time of drilling, the drilling method employed, the equipment used, and the drill bit specifications. Crucially, it documents the strata encountered. This includes descriptions of the different soil and rock layers, their approximate depths, thicknesses, and characteristics like color, texture, consistency, and any visible features such as fractures or inclusions. Samples collected during drilling, such as soil samples or rock cores, are also logged with their corresponding depths.

Furthermore, boorlogboeken often include water-related observations, such as the depth to the groundwater table, any changes in water level during drilling, and the presence of artesian conditions. Other relevant data that might be recorded include drilling rates, any difficulties encountered, and any deviations from the planned borehole trajectory. These records are vital for creating accurate geological cross-sections, understanding subsurface conditions, assessing risks, and making informed decisions throughout the lifecycle of a project. They serve as a permanent and reliable archive of the subsurface investigation.