If it is said that the construction plan is the original part, the geological survey may be considered as a late part of the construction process.
Thanks to survey work, geodetic engineers can evaluate the geological conditions at the construction site to determine the soil structure, mechanical properties of soil layers, water conditions underground and geological hazards for planning, design and foundation treatment … The following are some of the most fundamental issues in geological surveying:
What is a geological survey?
The geological survey aims at assessing and studying the geological conditions of the project at the construction site with the aim of determining soil structure, mechanical properties of soil layers, underground water conditions and Geological changes serve for the planning, design, and treatment of foundations.
How does geological survey work?
Drilling, digging, penetrating static, penetrating, geophysical, static compression, horizontal compression, cutting wing … are the activities in the geological survey of works and is carried out in the following way:
Step 1: The designer or owner of the project should provide information on the area of the site, the size, the load, the structure of the project and the proposed foundation solution for the geological survey. In addition, the survey department combined with the designer or owner of the work determines the volume, location, and depth of exploration.
Step 2: Geological surveyors conduct drilling with the specialized drill can be XY-1 or HT-150E. The geological drilling process combines soil sampling to a laboratory and SPT (standard penetration test) in the field. Every 2 meters of the drill will take 1-acre soil for mechanical experiments, then proceed to SPT field.
Step 3: Perform sample analysis in the laboratory. Laboratory samples were 9 mechanical tests of soil samples.
In addition, large scale works have to combine some other experiments such as:
+ consolidation test,
+ 1-axial compression test,
+ UU unbonded triaxial compression test
+ Triaxial triaxial compression test CU,
+ Experimental samples of corrosive concrete, …
Step 4: Make geotechnical investigation report, suggest some related issues. Geotechnical investigation reports are prepared in accordance with TCVN 9363: 2012. Provide necessary data for the designer to calculate and select the appropriate geotechnical solution to ensure the geological stability of the works. and achieve economic efficiency.
Individuals and organizations wishing to use geological survey services should contact Phuc Gia Company for timely assistance.👍👍😄
For further information, please contact:
📞Telephone number: 0903.91.62.91
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