Sampling and laboratory testing are important steps in the geological survey process, helping to accurately determine the physical and chemical properties of soil and rock in the project area. This process includes collecting soil and rock samples from the field, then conducting laboratory tests to evaluate technical properties and propose appropriate technical solutions.

The first step in the sampling process is to select suitable sampling locations based on preliminary and geophysical survey results. Sampling locations are usually selected at points representative of different geological conditions in the project area. This helps ensure that the soil and rock samples collected accurately reflect the geological characteristics of the entire construction area.

After choosing the sampling location, the survey team will drill holes and take soil and rock samples from different depths. This process involves using specialized drilling and sampling equipment to collect soil and rock samples from different soil layers. Soil and rock samples are then stored in sample boxes and carefully labeled to ensure the accuracy and reliability of future testing.

Next, the soil and rock samples are transported to the laboratory to conduct technical tests. These tests include physical and mechanical tests such as compression tests, shear tests, and permeation tests, as well as chemical tests such as chemical composition analysis and pH determination. The purpose of these tests is to evaluate the physical and chemical properties of soil and rock, thereby providing appropriate technical solutions for the design and construction of works.

For example, compression testing helps determine the compressive strength of soil and rock, providing important information for the design of foundations and load-bearing structures. Shear testing helps evaluate the shear strength of soil and rock, thereby determining the bearing capacity and stability of the ground. Permeability testing helps evaluate the water permeability of soil and rock, providing important information for the design of drainage systems and groundwater control. Chemical tests help determine the chemical composition of soil and rock, thereby providing measures to improve soil quality and protect the environment.

The results of laboratory tests are compiled and analyzed to prepare a detailed geological survey report. This report provides accurate and detailed information about the physical and chemical properties of soil and rock in the project area, thereby proposing appropriate technical solutions and ensuring project safety. build. Detailed geological survey reports also help project managers plan reasonable construction, optimize resources and time, and minimize costs incurred due to design changes or troubleshooting. .

In summary, sampling and laboratory testing are important steps in the geological survey process, helping to accurately determine the physical and chemical properties of soil and rock in the project area. Carrying out complete and accurate sampling and testing not only helps evaluate geological factors affecting the project but also provides appropriate technical solutions, ensuring safety and stability for the project. build.