Geotechnical Engineering


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Geotechnical Engineering

  1. 1. Geotechnical Engineering: Offshore Geotechnical Information and its Significance Geotechnical Engineering
  2. 2. GEOTECHNICAL ENGINEERING is one of the branches of civil engineering that deals with the engineering behavior of the different earth materials. GEOTECHNICAL ENGINEERING is critical in the study and practice of civil engineering. Military, mining, petroleum along with other engineering fields that include construction in or on the ground also uses GEOTECHNICAL ENGINEERING info. This is to assist them in the assessment of the earth materials settled at the site of an engineering project to figure out what, of anything that needs to be done with them to see to it that the project goes positively. On the other hand, in Marine or Offshore Geotechnical Engineering, geotechnical engineering companies execute earrthwork designs for man-made constructions in the sea, which are away from the coastline. Examples of these constructions are artificial islands, oil platforms as well as subsea pipelines. There's a significant number of differences between GEOTECHNICAL ENGINEERING and Marine Geotechnical Engineering. In the field of marine Geotechnical Engineering, ground improvement and site investigation are more costly, and the constructions offshore are at risk to a wider range of geohazards. While GEOTECHNICAL ENGINEERING uses the principles of soil mechanics and rock mechanics, in the field of Marine Geotechnical Engineering, the seabed materials, which are considered a 2-phase material, are often composed of mineral particles or rock and water.
  3. 3. Experienced geotechnical engineers are aware of the geohazards that may take place with geological features, geological activity as well as environmental conditions, and these are all monitored by the geotechnical engineering firms with the use of tools in investigating if the construction projects are going smoothly. Tsunamis, landslides as well as active faults are just few examples of potential threats in an offshore geotechnical engineering. With this, any kind of threat need to be supervised closely, mitigated for or removed by the geotechnical engineering services. So, as a part of the geotechnical engineering job, site investigation is highly required to be performed before any construction takes place. Offshore site investigations are not different from those that are conducted onshore. There are 3 phases for the offshore site investigation that engineers as well as geotechnical engineering consultants have to perform or conduct. One is a desk study. This will include data compilation. The second one is geophysical surveys, which determine either deep and shallow seabed penetration, and third is geotechnical surveys which includes sampling/drilling and in situ testing. Platforms, jackup rigs, steel jacket structures and gravity- based structures represent the offshore structures. The seabed's nature needs to be taken into account especially in planning developments in the sea to avoid geohazards or risks of experiencing them.
  4. 4. Marine Geotechnical Engineering involves designing open pit walls, mining waste dumps as well as other structures. Geotechnical engineers are the ones who assess the ground area where the construction will occur, and they are essential in analyzing slope stability, seepage and hydraulic separation on the man-made structures in the sea, and monitoring the changes in the land and the sea in order to find out how well the geology of an area would manage or cope with the geohazards. Basically, marine Geotechnical Engineering must not be taken for granted because this is an important component to understand how lifeline systems are doing, and in this case, the man-made structures in the sea.