Drilling applied to environmental studies and investigation

Drilling can contribute in different ways to environmental studies, depending on the research phase in which they are used. Generally, its use occurs more frequently in the phase of confirmatory environmental investigation, due to the phase´s purpose.  Check it out below:

Preliminary Evaluation

At the preliminary phase, environmental research is based on the definition of possible human interference that could trigger environmental damages.

The studies in this phase are developed with on-site visits, document collection and history of activities developed in the area and, if there is suspicion of environmental damage, a second evaluation phase is developed.

Confirmatory Environmental Investigation

In this phase we seek to confirm the suspicions that occurred in the previous phase, making use of analysis methods such as soil sampling through surveys at strategic points in the study area.

The Drilling methods more used in environmental studies are:

• For soil drilling, the percussion method (SPT) is recommended, since it is capable of providing information about the compactness and consistency of soil layers;
• For rocks, the most used method is the rotary Drilling by obtaining coring, reaching great depths and enabling analysis as to the degree of alteration, schistosity and quality index, for example.

Detailed investigation

In cases where environmental damage is confirmed in the study area, a detailed investigation is carried out to delimit the damage potential occurred and its zone of influence, as well as possible intervention measures aimed at the area rehabilitation.