DIGITAL MODELING AND ANALYSIS OF RETAINING DAMS FOR SEDIMENT ACCUMULATION

Abstract

In a number of regions, fresh water is becoming a strategic resource. The plans for the development of regions depend on its quantity: agriculture, industry, cities and tourism. In some regions, the lack of fresh water directly hinders development, and this negative trend is only getting worse from year to year. However, there is fresh water as a renewable natural resource in the regions, but it is distributed extremely unevenly throughout the year. On average, the total amount of precipitation per year is about 1500 mm in the mountainous foothill areas. This amount of water is quite enough to meet all current and short-term needs. But this is on the condition that we can use it, but this is not so. A large volume of natural precipitation runoff flows irrevocably and rather quickly down the mountain slopes and is lost to users. Technological solutions are proposed that allow accumulating the runoff of precipitation by locating systems of underground and above-ground reservoirs in mountainous areas. Such a formulation of the issue will allow solving many interrelated issues that ultimately contribute to the development of the regions as a whole and in a comprehensive manner. But just understanding the possibility at the present stage of development of technical and technological means for the implementation of such complex tasks is not enough. Scientific support is needed from the formulation to the study of specific issues due to their lack of study to date. The aim of the work was to study the vertical stresses in the body of an elevated dam, which is involved as a constructive technological element when the reservoir is located in a mountainous area. The study was carried out on the basis of a numerical experiment on a mathematical model built on a real engineering-geological situation. Using the Midas GTX NX program, numerical data were obtained, a large array of numbers, processed in turn using the wxMaxima program. The mathematical models obtained in this way were subjected to a consistent comprehensive analysis, which resulted in a qualitative analysis, revealing in detail the influence of the factors chosen for the study, such as head in the upstream of the dam and backwater from the downstream side, on the response function, which is taken as the vertical stress arising in the body of the aboveground dam.