Factors Influencing Changes In The Groundwater Level In Fergana

 The article describes the external and internal factors influencing changes in groundwater levels. The causes of groundwater formation and their dynamics are considered. The history of the theory of groundwater formation is analyzed.

Determination of the useful working coefficient (UWC) of the heating system

Improving the efficiency of the heating system of premises depends on the correct choice of heating system joists, their use. In the heating system, the consumption of the heat transmitter, the speed of the flow, the heat capacity, the heat transfer of the heating surfaces, the fuel and energy consumption affect the efficiency of the system. It is necessary to know the rules for the use of heating system equipment by the heat consumer and correctly organize the management of the system. We determine the useful working coefficient of the heating system using the educational stand “Building heating system”

Several different ways to increase the accuracy of the numerical solution of the first order wave equation

The article presents several different ways to increase the accuracy of the numerical solution of differential equations. The comparison of schemes with different accuracy for the first order wave equation problem is presented. The schemes of the first order of upwind scheme, the second order of accuracy of McCormack, the third order of accuracy of Warming–Cutler–Lomax, and the scheme of the fourth order of accuracy of Abarbanel–Gotlieb–Turkel were applied. The condensed computational grids for the McCormack scheme are used, and the results using an adaptive grid for the McCormack scheme were compared

Investigation of the interaction of hydraulic parameters of the channel in the filtration process

One of the most important and complex issues in the design of soil drainage channels is the issue of correct accounting of the filtration process. It is necessary to take into account hydraulic parameters and soil composition of existing channels in order to reduce filtration flow rate in ditches with uncoated soil. The article shows how to choose its theoretical basis for reducing the filtration flow rate correctly. Hydraulically convenient design is one of the current problems in the design of canals. This can be achieved by reducing the wet perimeter of the channel to reduce the filtration process in the channel. The article recommends that measures to reduce the filtration process be implemented during the construction or reconstruction of canals, without dismantling and rehabilitating existing canals. Field research was conducted on the North Fergana main canal. In order to study the filtration processes, measurement works were carried out on the PK 396+00, PK 497+01, PK 688+7, PK 692+6, PK 694+6, PK 697+00 pickets crossing the 2-section of the channel in the city of Namangan. In addition, the article developed recommendations on the methods and procedures for the application of bentonite clay from the Lagon betonet clay deposit of the Fergana region to the bottom of the channel in order to reduce the filtration process that occurs in the canal area. According to the results of the study, in the range from PK 411 + 00 to PK 426 + 74, filtration consumption was higher than other pickets

Groundwater Level Analyse In Urgench City With Using Modflow Modeling And Forecasting System

The study was conducted as part of a project to develop an automation system for monitoring groundwater in the city of Urgench. The possibilities of modeling and forecasting modeling MODFLOW in groundwater were studied. According to the results, regularities of the level and behavior of groundwater in the city of Urgench were revealed. According to the survey, the direction of movement of groundwater in the city of Urgench shifts in a northwesterly direction to a slope of 0.0008. According to the geophilized model, its high-traffic zone is located at a depth of 10-15 m, from 4-5 m per second

PRINCIPLES OF OPERATION AND ACCOUNT OF HYDRAULIC TARAN

In the calculation of hydraulics, the equation of motion of a fluid, the equation of pressure drop, and the equation of inertia are used. Dependence on water supply has been identified

Several different ways to increase the accuracy of the numerical solution of the first order wave equation

The article presents several different ways to increase the accuracy of the numerical solution of differential equations. The comparison of schemes with different accuracy for the first order wave equation problem is presented. The schemes of the first order of upwind scheme, the second order of accuracy of McCormack, the third order of accuracy of Warming–Cutler–Lomax, and the scheme of the fourth order of accuracy of Abarbanel–Gotlieb–Turkel were applied. The condensed computational grids for the McCormack scheme are used, and the results using an adaptive grid for the McCormack scheme were compared

CALCULATION OF THE TRANSITION PROCESSES IN THE PRESSURIZED WATER PIPES AT THE START OF THE PUMP UNIT

The article deals with processes of transition conduit when the centrifugal pump start determination value and hydraulic impact. Proper selection of the parameters of the transition process in the regulation of the operation of the units at the pumping station increases the reliability of the entire system, except for the pump, prevents vibrations that occur in it. Vibration damage and erosion are prevented.Using the results and graphs, it is possible to choose the right electric motor for the pump unit depending on the required pressure and water supply. Technical and economic efficiency is achieved by choosing the right engine. The construction of the graphical characteristics of the pump, determined the magnitude of the hydraulic impact in the grapho-analytical method

Determination of the useful working coefficient (UWC) of the heating system

Improving the efficiency of the heating system of premises depends on the correct choice of heating system joists, their use. In the heating system, the consumption of the heat transmitter, the speed of the flow, the heat capacity, the heat transfer of the heating surfaces, the fuel and energy consumption affect the efficiency of the system. It is necessary to know the rules for the use of heating system equipment by the heat consumer and correctly organize the management of the system. We determine the useful working coefficient of the heating system using the educational stand “Building heating system”

Mitigating groundwater rise in Fergana city: A comprehensive analysis and drainage strategy

This article analyzes the problems of raising groundwater in the city of Fergana and their impact on buildings, structures and utilities. The hydrogeological state of the area was studied, a drainage scheme was selected depending on the geodetic height and the location of buildings and structures on the site, in other words, a general plan of the site was developed. Hydrogeological calculations determined the flow rates of drainage water and depression lines. Hydraulic calculations are based on water permeability, water velocity, pipe diameter and slope. Hydraulic calculations of closed horizontal drains to lower the groundwater level were performed. The Bernoulli equation was constructed for a siphon pipe, and the vacuum at the highest point was determined by applying the continuity equation to this equation. The maximum height of the siphon was found using the given equations