Shore protection structures of water bodies. Part 2

В учебном пособии изложены основные сведения по берегоукрепительным сооружениям водных объектов. В нем содержатся рекомендации по конструированию отдельных элементов берегоукрепления, при этом основной акцент сделан на использование природных и природоприближённых материалов, гибких откосных конструкций с приоритетом экологических требований. Даны краткие рекомендации по методам расчёта параметров берегоукрепления разных типов и оценки их стоимостных показателей. Учебное пособие содержит сведения, необходимые для формирования профессиональных компетенций при подготовке бакалавров по направлению 20.03.02 «Природообустройство и водопользование» и рекомендуется Научно-методическим советом по природообустройству и водопользованию для использования в учебном процессе. Учебное пособие может быть использовано студентами при выполнении курсовых и дипломных проектов, курсовых и выпускных работ бакалаврами и магистрами других направлений подготовки и специальностей факультетов РГАУ-МСХА, студентами сельскохозяйственных и строительных вузов, выполняющих домашние задания и расчётно-графические работы.

В учебном пособии изложены основные сведения по берегоукрепительным сооружениям водных объектов. В нем содержатся рекомендации по конструированию отдельных элементов берегоукрепления, при этом основной акцент сделан на использование природных и природоприближенных материалов, гибких откосных конструкций с приоритетом экологических требований. Даны краткие рекомендации по методам расчета параметров берегоукрепления разных типов и оценки их стоимостных показателей. Учебное пособие содержит сведения, необходимые для формирования профессиональных компетенций при подготовке бакалавров по направлению 20.03.02 «Природообустройство и водопользование» и рекомендуется Научно-методическим советом по природообустройству и водопользованию для использования в учебном процессе. Учебное пособие может быть использовано студентами при выполнении курсовых и дипломных проектов, курсовых и выпускных работ бакалаврами и магистрами других направлений подготовки и специальностей факультетов РГАУ-МСХА, студентами сельскохозяйственных и строительных вузов, выполняющих домашние задания и расчетно-графические работы.


The article presents the data of field, laboratory and theoretical studies, which made it possible to determine that processing, abrasion destruction of natural shores and loose upstream slopes of dams and enclosing structures, takes place on technological water bodies of Belarus - regardless of their economic use - technical, drinking water supply, regulation of runoff, energy, land reclamation, etc. The period of development of the processing process and the formation of the equilibrium profile is divided into a number of time periods (stages). Three stages are distinguished for the conditions of water bodies in Belarus: initial, intense dynamics and attenuation (equilibrium). Based on the data of field surveys of shore protection structures, the current state of various types of fasteners is assessed with the identification of the causes of their destruction and the extent of deformations. It has been established that the most common shore and slope fastenings are fastenings in the form of reinforced concrete monolithic or prefabricated plates. It is determined that the most widespread are the deformations of the fastenings in the form of the disclosure of inter-tile construction, temperature and settlement joints. As a result of opening the joints of the plates, the destruction and washing out of the sand and gravel bed, the formation of hollows and niches in the body of the slope with its subsequent processing, deformation and destruction of the fastening take place. It should be noted that the destruction of the fastening also occurs in stages, and the stages of the destruction of the fastening coincide with the staging of the processing of loose ground slopes. Based on the data of full-scale and experimental laboratory studies, scientifically substantiated criteria for assessing the stability of soil slopes and slopes with fastening by reinforced concrete slabs are proposed, which can be used to predict the state of designed and operated shore protection structures and fastening slopes. An enlarged methodology has been developed for assessing the risks abrasion of coasts and slopes of retaining structures based on the proposed territorial coefficient of abrasion risk, a mathematical factor model of risk based on the fault tree, and also an experimental electronic map of the risks of abrasion for the conditions of water bodies in the Minsk region of Belarus are developed.


Water ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1647 ◽  
Author(s):  
Enzo Pranzini ◽  
Giorgio Anfuso ◽  
Irene Cinelli ◽  
Marco Piccardi ◽  
Giovanni Vitale

Analysis of a large shoreline database (from 1878 to 2017) and recompilation of information on type/age of shore protection structures along the Northern Tuscany, allowed a deep insight of the progressive armouring of this coastal sector. The area experienced beach erosion since the end of the 19th century due to reduced sediment inputs from rivers and harbour constructions. Shore protection structures started to develop at the beginning of the 20th century, first to protect settlements and coastal roads, later to maintain a beach for tourist activity. The changing of the goal and the increasing awareness of the negative impact of some structures resulted in an evolution of coastal defence projects: initially, seawalls and revetments, later detached breakwaters and, more recently, groins. Today, a reduction in hard structures is perceived by removing or lowering detached breakwaters and groins below mean sea level. The forcing function of the growing tourism industry is producing a demand for projects and their design is detailed in this paper: results will be of use in the correct design of a long-term, general, erosion management plan to restore the natural sediment circulation patterns.


2000 ◽  
Vol 1 (4) ◽  
pp. 15
Author(s):  
E F. Brater

The purpose of this paper is to present the results of three years of field observations on low cost beach protection structures in use on the Great Lakes. The structures were studied in regard to their effectiveness as beach building and protective devices and with respect to their durability in resisting ice and wave forces. The term "low cost" refers to structures which cost between $10 and $50 per foot of frontage at 1952 prices.


1971 ◽  
Vol 5 (10) ◽  
pp. 913-915 ◽  
Author(s):  
A. K. Shreiber ◽  
M. M. Milyukovskii

2019 ◽  
Vol 12 (Summer and Autumn 2019) ◽  
pp. 49-56
Author(s):  
Farhood Azarsina ◽  
Aria Pirzadeh ◽  
Ghasem Darvish ◽  
◽  
◽  
...  

Author(s):  
M. Borysenko ◽  
D. Lukashov

The results of a study of communities of zooperiphyton from stone embankments of shore protection structures in the downstream of Kaniv hydroelectric in the autumn period has been presented. Inverse relationship between quantitative indexes of zooperiphyton (as density and biomass) its diversity and the distance from the hydroelectric dam was founded.


Author(s):  
S.I. Rogachko ◽  
◽  
H.V. Slobodianyk ◽  
N.B. Dolinskaya ◽  
◽  
...  

Abstract. The shores of seas, lakes, bays and reservoirs under the action of wind waves, drifting level ice, rainwater, wind erosion and other factors are subject to intensive destruction. As a result of this, the areas of valuable agricultural land and other lands are reduced. The destruction of the coasts is accompanied by landslides, which reduce the area of settlements where residential buildings, urban buildings, industrial enterprises, park areas, roads and other communications are located. In such cases there is a need for the construction of special protection structures, which will protect coasts from destruction. There are two methods of coastal protection ‒ active and passive. Experience in coastal protection shows, that in many cases, these methods can be successful when applied jointly. The types of structures of shore protection structures are diverse. Therefore, the main task of designers is to choose the most optimal of them, taking into account the climatic, hydrological and engineering-geological conditions of the region construction. The aim of this work is to create a progressive method of construction of shore protection structures on shallow shores of the seas and in shallow reservoirs. This paper considers the existing and innovative designs of shore protection structures made of various materials, the conditions of their use and technical and economic characteristics are analyzed. Based on the analysis, a progressive method of construction of shore protection structures from gabions is proposed. The using of the proposed method for the construction of shore protection structures from a box type gabion will speed up the construction process of such structures, as well as reduce the volume of material at the base, which will lead to a significant reduction in the cost of construction. The mass of gabions in each project should be determined on the parameters of the waves of the design storm in accordance to the recommendations of standards.


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