SITE INVESTIGATION AND EXPLORATION TECHNIQUES

Question 1

simply is the process of the collection of information, the appraisal of data, assessment, and reporting without which the hazards in the ground beneath the site cannot be known.

Answer 1

Site investigation

Question 2

5 reason for a site investigation is to understand the following:

Answer 2

✓ The composition of soil layers and bedrock
✓ Groundwater conditions
✓ Durability, compressibility, and strength of soil, rocks, soil strata
✓ Chemical composition of groundwater on site
✓ Composition of foundations on nearby site

Question 3

7 Background Information before Subsurface Investigation

Answer 3

1. The type of structure to be built, its intended use;
2. Characteristics of the structure;
3. Starting date;
4. Intended construction method;
5. The estimated period of construction;
6. The probable soil condition at the site, by geological, geotechnical or aerial analysis;
7. The behavior of existing structures adjacent to the site, as well as other facts available through local experience.

Question 4

It is the process of searching for evidence of any mineralization hosted in the surrounding rocks.

Answer 4

Exploration

Question 5

It is the process of finding commercially viable mineral resource and the objective is to locate it in the shortest possible time and at the lowest possible cost.

Answer 5

Exploration

Question 6

usually begins with low impact operations, including desktop testing and field inspections, to assess if signs of minerals or petroleum are present. It is achieved before more intensive and expensive technologies such as geochemical sampling, exploration and geophysical surveys are carried out.

Answer 6

Exploration

Question 7

3 EXPLORATION TECHNIQUES

Answer 7

1. GEOPHYSICAL SURVEY
2. GEOLOGICAL MAPPING
3. GEOCHEMICAL SURVEY

Question 8

include the implementation of geophysical methods to indirectly determine the geological and structural as well as the physical and mechanical characteristics of the foundation soil. These methods are used to determine the layout, thickness and properties of individual layers below the terrain surface, on which the construction of a specific structure

Answer 8

GEOPHYSICAL SURVEYS

Question 9

8 GEOPHYSICAL SURVEY

Answer 9

1.Airborne Geophysical Survey
2. Gravity Surveys
3. Seismic Surveys
4. Magnetic Geophysical Survey
5. Radiometric Geophysical Surveys
6. Electromagnetic (EM) Surveys
7. Induced Polarization (IP) Survey
8. Drillhole Surveys

Question 10

is the process of locating and identifying rock types and geological structures in relation to landforms and topography, it is sometimes the first method of exploration used on the ground, and it may take place at a local comprehensive scale or a regional scale. ________ creates a geological map of the exploration region, which will show the distribution of rock types and structures.

Answer 10

Geological mapping

Question 11

are used to identify areas for further investigation. Soil, rock and/or sediment samples are typically collected as part of the surveys. These samples are sent to a laboratory for analysis in order to determine prospective mineralization zones.

Answer 11

GEOCHEMICAL SURVEY

Question 12

6 GEOCHEMICAL SURVEY

Answer 12

1.Soil Sampling
2. Rock Chip Sampling
3. Costeaning (Trench Sampling)
4. Stream Sediment Sampling
5. Channel Sampling
6. Bulk Sampling