The influence analysis of the structures and applied software systems’ soil foundations design models

Prikhodko

et al. 2022

The peculiarity of small rivers is the dependence of erosion-accumulative processes in their beds on the intensity of soil erosion in the catchment area: the smaller the river, the greater the contact with the catchment area of its channel, where mineral particles, washed off from its area, directly enter it. Soil erosion leads to the entry of an excessive amount of them into the channel of a small river, as a result of which sediment accumulation begins in it, siltation of the channel occurs. It leads to changes in the water regime of small rivers - a decrease in inter-soil runoff (up to the drying up of rivers), a sharp reduction in underground power supply. In the humid zone, due to the high water content, the siltation of small rivers is poorly expressed and has a local character. Siltation of small rivers is especially characteristic for the forest-steppe and steppe zones, as well as for the south of the forest zone. In the steppe zone of the European part of Russia, as a result of siltation, rivers of the first order completely disappeared, up to the fourth (up to 40-50 km long), leading to a total reduction of the river network by up to 30 %. In the forest zone, due to the disappearance of sources, the number of rivers of the first and second orders (up to 20 km long) decreased by 2.2 times. During the agricultural period (about 300 years), a layer of sediment with a thickness of 0.5 to 1 m accumulated in the beds and floodplains of small rivers in the southern half of the European part. The erosion of small riverbeds reaches on average only 20 % of washed off products, which is about 60 % of the total river sediment runoff. The rate of siltation of small rivers in the Don basin is 6-12 mm / year with a length of up to 25 km and about 1 mm/year with a length of 100 km and above. Siltation of small rivers is not typical for regions where the soil is washed away by meltwater, since the maximum flow of sediment into the rivers coincides with high water, when the channel-forming activity of water flows is most active.

Section: Consequences Of Degradation Of Small Rivers [11]mentioning

confidence: 99%

Analysis of Impact of Urbanization Development on the Deterioration of Ecological State of Rivers

Prikhodko

et al. 2022

“…The law of the Russian Federation "On waste production and consumption" was first adopted in 1998. Much earlier, similar laws were issued in the United States, Germany, France, and other countries [1].…”

mentioning

confidence: 90%

“…The main task of using geotextile containers made of high-strength fabric materials is the technology of dehydration of suspensions of various origin. Using in practice the excellent filtration characteristics of the applied geotextile material, geotextile containers fully cope with the task [20,21].…”

mentioning

confidence: 99%

Improvement of design parameters of geotextile containers made of polypropylene for removal of silt layers and industrial waste

Bandurin

2022

The article deals with the issues of improving the design parameters of geotextile containers made of polypropylene for the removal of silt layers and industrial waste as exemplified by the Krasnodar reservoir. The article presents statistics of waste accumulation in the Russian Federation in recent years. A new technology for transportation and disposal of liquid waste is proposed. The calculation of the parameters of geotextile containers made of high-strength fabric materials based on polypropylene has been developed. The development of chemical industry has allowed us to offer a new cost-effective innovative technology of dewatering and waste disposal based on the use of geotextile containers made of high-strength fabric material. In the Russian Federation, more than 3.5 billion tons of waste are accumulated annually, the amount of which increases with the growth of economic activity. Of the waste produced in 2020, 47% was placed at the enterprises’ own facilities, and 19% was buried. In order to improve the state of the environment, it is necessary to improve waste storage and disposal technologies. The use of geotextile containers made of high-strength fabric materials for dewatering and waste disposal is the most environmentally and cost-effective technology that has no restrictions and contraindications for technical equipment and has all the necessary indicators of strength, rigidity and reliability for effective use.

“…In Russia, the authorized representative is the company «Admir Eurasia LLC», a subsidiary of the Israeli holding «Admir Technologies Ltd» with 15 years of experience in the use of geosynthetic materials in the field of environmental protection and construction services [9].…”

mentioning

confidence: 99%

Application of geotextile containers for removal of silt layers of the Krasnodar reservoir

Mykhailin

2022

The article deals with the issues of improving the methods of removing silt layers of the Krasnodar reservoir using geotextile containers. The new technology exceeds all the characteristics of the dewatering facilities available in Russia. The necessary stage of preparation of wastes for disposal is dewatering to a humidity of 50-60%, which allows you to reduce their volume tenfold and improve the structure of raw materials. For these purposes, Russia has quite a lot of different structures and a large number of sludge dewatering methods. For the construction of sludge dewatering facilities and various types of precipitation of sewage, much less time and economic costs are required than for the construction of mechanical cleaning facilities. Also, new technologies occupy quite a little free land area compared to silt sites and they do not depend on climatic factors because atmospheric precipitation falling on the container drains from its surface. The impact of negative temperatures provides the deep moisture drainage after thawing of organogenic silts and hydroxide slimes. Also, new technologies occupy. Geotextile container technology is ideal for silt maps cleaning, sludge storage facilities and reservoirs, for temporary storage of dewatered sludge on a site, and, most importantly, for disposal of wastes directly at the dewatering site in the form of a highly loaded landfill that is resistant to wind and water erosion. When reducing the area of silt maps, the containers can be used as an emergency reserve, since their guaranteed storage period is 25 years. The main principle of the technology is to provide the sludge into the container through a pulp pipeline and then wait for the free water to drain. When dewatering granular suspensions (from sand to dense slimes), the container is filled with natural pulp. When fine silts and hydroxide slimes are dewatered, a flocculant is added to the pulp. After the initial filling of the container with pulp, its subsequent pumping is carried out from 1 to 5 times, after which the process of consolidation of the dehydrated material to the limit of free water release occurs, the duration of which depends on the properties of the solid phase. The main thing is that waiting does not consume any resources, except for the area provided for containers. After consolidation, a loose or refractory material is formed, the size of which depends on the size of the geotextile container used.