APPROACHES TO RATIONAL SAMPLING SCOPE IN ENGINEERING AND GEOLOGICAL EXPLORATION DURING THE CONSTRUCTION OF TRANSPORT STRUCTURES
DOI:
https://doi.org/10.32782/apcmj.2025.1.10Keywords:
sampling, soil, engineering and geological survey, number of samples, transport structureAbstract
The selection of elements of the engineering geological testing system is methodically sufficiently developed and standardized in view of the large amount of accumulated empirical information and typification of engineering geological conditions. Increasing the representation of engineering geological data can be achieved by thickening the observation network, but the associated increase in the volume of testing leads to an increase in the cost and time spent on geological surveys. Finding the optimal balance between the need for quality and speed of work is possible with a quantitative assessment of the variability of elements of the geological environment using statistical methods. The degree of correspondence of the properties of the set of sampling objects and the studied geological set depends on the location, density and total number of observation points, as well as on the size, orientation, shape and volume of the selected samples. The assessment of the possibilities of using the results of engineering and geological testing to select a rational set of methods is carried out at the stage of search and evaluation works based on the analysis of the features of the geological structure, the nature of the distribution of features, the material composition and physical properties of the object, as well as the intended exploration methodology and technique, the density of the exploration network and the resolution of geophysical equipment during engineering and geophysical studies. The adopted method and method of testing should ensure the highest reliability of the results with sufficient productivity and economy. Its results will form the basis of the feasibility study of engineering and geological surveys for construction purposes, since they allow designing a reasonable number of geological samples in the most optimal way. When sampling, various schemes are used in practice, which differ in geometry and mass sampling. The paper presents an analysis of approaches to the rational volume of sampling during engineering and geological surveys during the construction of transport structures.
References
Wang L., Wu Z., Chen Y., Wang Z., Yan C., Tong T. Engineering Environment and Geological Survey. Technology Standard of Pipe Jacking. Singapore : Springer, 2024. P. 61–67. URL: https://doi.org/10.1007/978-981-99-5597-8_6.
Wei Zhou. Analysis of Geological Survey Technology in Building Engineering. World Construction. 2016. № 5. P. 15–17. DOI: 10.18686/wc.v5i2.75.
Kelly William E., Mares Staimislav. Chapter 6 Geophysical Surveys in Engineering-Geologic Investigations. Developments in Water Science. 1993. Vol. 44. Р. 195–244. URL: https://doi.org/10.1016/S0167-5648(08)70374-5.
МР А.2.1-37641918-903:2019. Методичні рекомендації з визначення методами геостатистики раціонального обсягу відбору зразків при інженерно-геологічних вишукуваннях. (Чинний від 12.12.2019 р.). Київ, 2019. 45 с.
ДБН А.2.1-1-2008. Вишукування, проектування і територіальна діяльність. Вишукування. Інженерні вишукування для будівництва. (Чинний від 01.07.2008 р.). Київ, 2008. 74 с.
ДСТУ 9154:2021. Настанова з виконання геодезичних робіт у дорожньому будівництві. (Чинний від 01.09.2022 р.). Київ, 2021. 104 с.
ДСТУ-Н Б EN 1997-1:2010 (EN 1997-1:2004, IDT). Єврокод 7. Геотехнічне проектування. Ч. 1 : Загальні правила. (Чинний від 01.07.2013 р.). Київ, 2013. 193 с.
Батракова А.Г., Дорожко Є.В., Захарова Е.В., Клюка О.М. Особливості складу інженерно-геодезичних вишукувань у дорожньому будівництві. Комунальне господарство міст: науково-технічний збірник. Серія «Технічні науки та архітектура». 2022. Вип. 6 (173). С. 81 – 85.
