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khadamat23 · Dołączył: 23 Lis 2020 Posty: 4

Sewer Design Analysis
Five basic forms are used for cross-sections of closed sewage systems in an external sewage system: circular (K), egg
(J), pear (GR), bell (DZ), and compound. Given the scope of this work and the popularity of certain cross sections,
The main focus of the next part of the work will be on circular cross sections. The ducts must transmit all the loads that they may
It affects them during transportation, installation and after installation. The most suitable material for building channels
They are those that are characterized by:
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 No change to the internal structure or exterior coating stability over time,
 Sufficient strength, especially in compression, under the influence of external (permanent and
Variable), which are directly related to the cable installation method,
Corrosion resistance that occurs as a result of drawing sand and other pollutants at the bottom of the channel,
 thermal resistance
High smoothness, which leads to a lower coefficient of friction when wastewater flows,
 Low water absorption and higher water permeability,
 Resistance to erosion of groundwater and sewage (often contain aggressive compounds),
 Permanent tightness of connectors and piping structures.
When it comes to materials from which tubes are made, we can distinguish between:
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 mud pipes
 concrete pipes and reinforced concrete
Basalt pipes
Polymer concrete pipes
Cast iron pipes
 Composite GRP Pipes
 thermoplastic pipes
PVC pipes
بج PVC with ribbed walls
 PVC with structural walls
 Double-walled PP sewer
 PE-HD polyethylene pipes
HDPE / PP pipes
It should also be noted that currently the most popular plastic, silica and concrete pipes have a diameter
200-800 mm.
The scope of work carried out by robots in the sewer
Development of building a single universal robot for checking, repairing or laying cables remotely in
Sewers having the above mentioned features pose a very big construction challenge. Ie my body
The interference should not weaken the structural parameters of the existing installation. Sewers include three main ones
Engineering groups for engineering works. The first is cleaning and unblocking, and it is often done without performing advanced operations
Robotic solutions. The second group consists of inspection work, which in the simplest case can be carried out with a coil
The use of cable-led TV cameras or with mobile robots - they are currently gaining more popularity. more developed
The solutions use specialized laser and ultrasound scanners, in addition to microwave technologies. Another group of
Engineering and inspection works consist of installing additional elements in the sewers. As far as the subject matter
It concerns this work, it is primarily the installation of optical fiber cables in special shields or directly in
Sewer cable.
It is the most commonly used form of cleaning internal sewers where congestion or grease deposits occur.
Leftover paper powder, solid parts, and other waste. In newly built and renovated sewage systems, and construction
The waste is a serious problem. In sewage systems located near trees and shrubs, the system is
Covered with roots and so-called mechanical (electric) spring is used. Building connections and external fixtures
It can also be cleaned this way. A great advantage of mechanical machines (electric springs) is a large selection of springs
Diameters and a large selection of ends. However, this method is often not sufficient