ENGINEERING GEOLOGY SURVEY
PT Geoscan Eksplorasindo possesses significant expertise in providing crucial survey services for engineering geology purposes. We are highly experienced in conducting specialized surveys to assess ground conditions and mitigate potential risks for large-scale infrastructure projects.
Our capabilities include:
Geoelectric and Seismic Refraction Surveys
We have a proven track record of conducting comprehensive geoelectric and seismic refraction surveys for engineering geology purpose. These surveys are essential for mapping subsurface rock layers, identifying geological structures, and evaluating the integrity of the foundation before construction begins.
Liquefaction Potential Assessment
We are also skilled in performing surveys to identify and assess liquefaction potential in areas planned for dam construction. Our work provides critical data to help engineers design foundations that can withstand seismic activity and ensure the long-term safety and stability of the structure.
“With a scientific approach and precise data, the following engineering geology surveys have been conducted.”
2022
Location : Jakarta – Indonesia
Traditional geoelectrical surveys require direct contact with the ground, as metal electrodes must be driven into the soil to inject an lectrical current into the earth. This method is often impractical in urban settings where the ground is covered by concrete, asphalt, or other man-made surfaces.
At PT Geoscan Eksplorasindo, we have pioneered an innovative solution to overcome this challenge. By re-engineering the form of our electrodes, we have successfully adapted our geoelectrical surveys to be performed directly on top of concrete surfaces, as shown in the picture below.
This breakthrough allows us to conduct crucial subsurface investigations in densely developed urban environments, such as Jakarta’s bustling capital city, with minimal disruption and maximum efficiency.
2020
Location : Cirata DAM site
At PT Geoscan Eksplorasindo, we thrive on solving complex and seemingly impossible challenges. We were tasked with investigating a potential leak within a tunnel, which required a comprehensive subsurface analysis. The project presented an unprecedented challenge: conducting a full 3D geoelectric survey in a confined space.
To overcome the immense logistical and technical difficulties of a survey inside a tunnel, our team developed a groundbreaking and innovative solution. Instead of the traditional ground-based setup, we ingeniously mounted the electrodes to the tunnel’s ceiling. This allowed us to achieve the necessary three-dimensional data acquisition geometry.
This bold and unconventional approach proved to be a resounding success. Despite the unique constraints, we were able to obtain exceptionally clear and detailed results, providing our client with the precise data needed to address the issue.
The success of this project stands as a testament to our team’s ingenuity and commitment to pushing the boundaries of what is possible in geophysical exploration.
2022
Location : Sorong – Papua
Regarding to planning construction of Dam, its need information of potential of liquefaction for the sake of Dam safety. Liquefaction is process of loss of shear strength and soil stiffness due to presence of pore water stresses that arise due to cyclical (repetitive) loads.
The sudden loss of shear strength and soil stiffness due to cyclical (repetitive) loads, can increase the pore water pressure and decreasethe effective vertical stress. If the effective vertical stress drops to zero, therefore soil will melt and change into fluid characteristic and no strength to support the building above it. This phenomenon often makes buildings collapse.