A geotechnical survey must provide a comprehensive study of the engineering-geological conditions of the construction area (site, section, road), including topography, geology, geomorphological and hydrological conditions; composition, condition and properties of the soils; geological and engineering-geological processes; and the forecast of possible changes in geotechnical conditions in terms of interaction between the designed objects and the geological environment. This information is required to obtain the necessary and sufficient materials for the design, construction and operation of the facilities.
A Geotechnical Survey includes:
Collection and processing of previous research materials;
Route observations (reconnaissance survey);
Mining excavation (geotechnical well drilling);
Geophysical surveys;
Field soil studies (static, dynamic probing, load tests);
Hydro-geological studies;
Laboratory testing of soils and groundwater;
Soil examination of the foundations of existing buildings and structures;
Off-site processing of materials;
Forecast of changes in geotechnical conditions;
Assessment of hazards and risks from geological and engineering-geological processes;
Preparation of a technical report.
The requirement for certain types of engineering and geological work is identified in the course of the engineering studies. This is based on the technical specifications of the client, consideration of the design process stages, the complexity of engineering-geological conditions, and the level of responsibility associated with the building and structure design.
Degar LLP also performs engineering and geological surveys for the construction and design of linear structures (roads, railways, water and gas pipelines, lines of telecommunication and power transmission, etc.).
A comprehensive engineering-geological conditions survey will be completed. The extent of the survey should be sufficient to identify the engineering-geological elements. The findings will be determined in the laboratory and (or) by field tests. These tests will show the soil’s strength and deformation characteristics, along with their standard and estimated values. The hydro geological parameters, the quantitative indicators of geological and engineering-geological processes intensity (subject to the requirements of SNiP RK), the aggressiveness of the groundwater toward the concrete and the corrosiveness toward the metals (in terms of the interaction of the designed object with the geological environment), will also be ascertained.
The width of the road side band for linear facilities, the average distance between mine outputs and their depthin the engineering-geological survey, should be taken in accordance with Table 4.1 CH 1.02-18-2007. Table>>>
