characteristics of strong dams
Characteristics and classification of landslide dams associated …
Background Strong earthquakes are among the prime triggering factors of landslides, which may block rivers, forming landslide dams. Some of these dams may pose serious threats to people and property due to upstream inundation and downstream dam-breach flooding. Evaluating the stability and potential hazard of landslide dams is …
Low-Head Dams
Low-Head Dams. Because of its small size and drop, a low-head dam does not appear dangerous. In fact, it is the most dangerous type of dam. It is called the "drowning machine.". Water going over the dam creates a strong circular current, called the backroller or the boil, at the base of the dam. The backroller can trap your boat or board ...
Correlation Between Single Component Durations and Damage …
To analyze the effects of strong motion duration on the damage of concrete gravity dams, Fig. 5.13 is generated to identify whether the peak displacement response of the dam is related to strong motion duration, and Fig. 5.14 are generated by plotting the damage energy dissipation of the dam imparted by the 20 records for a given …
Failure characteristics of landslide dams considering dam …
The geometries and material properties of a landslide dam depend on the dam formation process and affect the breaching process. A comprehensive understanding of the entire process of dam formation and breach is necessary for a more accurate analysis of the dam stability and failure characteristics, but little research has been done in this …
Evolution criteria of overall damage of concrete ...
Strong earthquake cases of concrete gravity dams show that the foundation damage has an important influence on the seismic response and damage characteristics of the dam body. To study the real dynamic damage characteristics of concrete gravity dams under the action of near-fault ground motions, this study establishes a dam-reservoir …
Dams 101 | Association of State Dam Safety
The Importance of Safety Regulation. The National Inventory of Dams (NID) has catalogued the more than 90,000 dams on America''s waterways according to their hazard classification. Hazard classification is determined by the extent of damage a failure would cause downstream, with high-hazard potential dams resulting in loss of life and significant …
Analysis aspects of dams subjected to strong ground shaking
• characteristics of strong ground shaking (peak ground acceleration, frequency content, duration of strong ground shaking); ... The seismic behaviour of dams under strong ground shaking is hard to predict, as each large dam is a prototype located at a unique site. Generalisation of results is often not possible or questionable.
Dam Construction » Geology Science
Yusufeli Dam Project in Turkey. Dams can be classified into several types based on their design and construction methods. These include: Embankment dams: These are typically constructed from compacted earth, rock, or a combination of both.They are designed to resist the forces of water pressure and can be built in a variety of shapes, …
The Response of Earth Dams to Strong Earthquakes
The Response of Earth Dams to Strong Earthquakes. N. Ambraseys, S. K. Sarma. Published 1 September 1967. Geology, Engineering, Environmental Science. Geotechnique. Synopsis In the first part of the Paper the nature of the ground movements is discussed briefly using as examples acceleration records obtained near the epicentre of strong …
Damage identification of arch dams based on post-earthquake …
1. Introduction. The seismic safety of concrete arch dams has always been of high concern [1], especially the 200 m high or even higher arch dams located in strongly seismic areas [2], such as Xiluodu Arch Dam (285.5 m), Dagangshan Arch Dam (210 m), and Baihetan Arch Dam (289 m), etc.The primary issue with the seismic safety analysis of …
Analysis aspects of dams subjected to strong ground shaking
Analysis aspects of dams subjected to strong ground shaking. In the past, the pseudo-static design concept, proposed by Westergaard in the 1930s in connection with the Hoover dam project, was widely used. Several finite element programs were developed in the 1970s for the dynamic earthquake analysis of dams, based on the …
A general definition of integrated strong motion duration and its ...
Due to the seismic characteristics of the selected records, the average value of the Arias intensity for horizontal accelerations is greater than that of vertical accelerations. ... The response of earth dams to strong earthquakes. Geotechnique, 17 (3) (1967), pp. 181-213. CrossRef View in Scopus Google Scholar [35] R.L. Husid. Analisis …
Dam
OverviewHistoryTypesConstruction elementsCreationFailureSee alsoSources
A dam is a barrier that stops or restricts the flow of surface water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation, human consumption, industrial use, aquaculture, and navigability. Hydropower is often used in conjunction with dams to generate electricity. A dam can also be used to collect or store water which …
Seismic damage identification of high arch dams based on an ...
The core idea of the multi-objective DCS-DAE damage identification algorithm is the degree of deviation between the signal characteristics of the new data slice and the signal characteristics in the intact scenario of the arch dam. The overall framework of the proposed model is shown in Fig. 3. Download : Download high-res image (276KB)
Dams | SpringerLink
Dams are constructed from large volumes of naturally occurring earth materials. For example, an earth-cored rockfill dam requires regolith with certain physical properties for the earth core, sand and gravel for filter zones and broken rock for rockfill; a concrete dam requires suitable broken rock or gravel for concrete aggregate, together with sand and …
The Killer in Our Rivers: Understanding Safety Around Dams
The late Dr. Bruce Tschantz, professor emeritus of the University of Tennessee, documented 377 fatalities at low-head dams from 1960 to August 2016, with the majority – 91 percent – occurring from April through August during the summer recreation season. Swimming, boating and fishing account for most incidents at dams in the United …
Damage characteristics and failure modes of concrete gravity dams ...
To investigate the damage characteristics of concrete gravity dams subjected to penetration and explosion, a fully coupled numerical model for the concrete gravity dam–foundation–reservoir system is built. Referring to the size of typical domestic high dams, the height is set to 140 m, and the crest width and head height are defined as …
Dams
A dam is a structure built across a river or stream to hold back water. People have used different materials to build . dams over the centuries.. Ancient dam builders used natural materials such as rocks or clay. Modern-day dam builders often use concrete.Manmade dams create artificial lakes called reservoirs.. Reservoirs can be used …
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