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Hantangang Dam
The Hantangang Dam is a gravity dam on the Hantan River in Yeoncheon County, Gyeonggi Province, South Korea. Construction on the dam began in 2007 and completed in 2015. The primary purpose of the dam is flood control : it was proposed in 1998 after a series of floods in the late 1990s that killed 128 people, displaced over 31,000 and caused about US$900 million in property damage. Initially designed as a multi-purpose project, the design was changed solely to flood control in 2006 due to the concerns of residents upstream. It is being implemented by Korea Water Resources Corporation (K-water). Construction Construction started in February 2007 and completed in mid-2015. K-water is responsible for planning and supervisionDL E&C(Daelim industrial.co. Ltd) was undertook the construction as a leading contractor. Not only to secure the stability against overflow during the flood season but also to reduce the construction cost through the mechanized construction fitting for the mega con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yeoncheon County
Yeoncheon County (''Yeoncheon-gun'') is a county in Gyeonggi Province, South Korea. The county seat is Yeoncheon-eup (연천읍) and sits on the Korail railroad line connecting Seoul, South Korea, with North Korea (DPRK). History A variety of paleolithic relics have been discovered at Jeongok-ri, first in 1978. Since 1993 the Yeoncheon Jeongok-ri Paleolithic Festival has celebrated the discovery. Yeoncheon was the site of the Battle of Yultong during the Korean War, where the Philippine 10th Battalion Combat Team defended their position during the First Chinese Spring Offensive. In August 2015, over 100 civilians were evacuated from the area after North and South Korea exchanged artillery fire. Administrative districts The city is divided into two '' eup'' (towns) and eight '' myeon'' (townships): Climate Yeoncheon has a monsoon-influenced humid continental climate (Köppen: ''Dwa'') with cold, dry winters and hot, rainy summers. Sister cities * Zoucheng, Shandong, Chin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gyeonggi
Gyeonggi-do (, ) is the most populous province in South Korea. Its name, ''Gyeonggi'', means "京 (the capital) and 畿 (the surrounding area)". Thus, ''Gyeonggi-do'' can be translated as "Seoul and the surrounding areas of Seoul". Seoul, the nation's largest city and capital, is in the heart of the area but has been separately administered as a provincial-level ''special city'' since 1946. Incheon, the nation's third-largest city, is on the coast of the province and has been similarly administered as a provincial-level ''metropolitan city'' since 1981. The three jurisdictions are collectively referred to as '' Sudogwon'' and cover , with a combined population of 25.5 million—amounting to over half of the entire population of South Korea. History Gyeonggi-do has been a politically important area since 18 BCE, when Korea was divided into three nations during the Three Kingdoms period. Ever since King Onjo, the founder of Baekje (one of the three kingdoms), founded the governm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korea Water Resources Corporation
The Korea Water Resources Corporation (한국수자원공사, 韓國水資源公社, Korea Water Resources Corporation), or K-water, is the governmental agency for comprehensive water resource development and providing both public and industrial water in South Korea. The Comprehensive Development Plan of Land in August 1966 in accordance with the Korea Water Resources Development Corporation Act was enacted in November 1967. The Korea Water Resources Development Corporation was established in 1987, and the Korea Water Resources Corporation Act enacted in 1988. Timeline * August 3, 1966 - Korea Water Resources Development Corporation Act was enacted * November 16, 1967 - Korea Water Resources Development Corporation was founded * June 30, 1973 - Reclamation of Western Industrial Park was completed * October 15, 1973 - Soyanggangdaem was completed * November 19, 1973 - Changwon Machinery Industrial Park Development Project was launched * February 1, 1974 - Industrial Base Develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roller-compacted Concrete
Roller-compacted concrete (RCC) or rolled concrete (rollcrete) is a special blend of concrete that has essentially the same ingredients as conventional concrete but in different ratios, and increasingly with partial substitution of fly ash for Portland cement. The partial substitution of fly ash for Portland Cement is an important aspect of RCC dam construction because the heat generated by fly ash hydration is significantly less than the heat generated by Portland Cement hydration. This in turn reduces the thermal loads on the dam and reduces the potential for thermal cracking to occur. RCC is a mix of cement/fly ash, water, sand, aggregate and common additives, but contains much less water. The produced mix is drier and essentially has no slump. RCC is placed in a manner similar to paving; the material is delivered by dump trucks or conveyors, spread by small bulldozers or specially modified asphalt pavers, and then compacted by vibratory rollers. In dam construction, roll ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hantan River
The Hantan River is a river in South Korea, flowing through Gangwon and Gyeonggi Provinces. It is a tributary of the Imjin River, which eventually joins the Han River and empties into the Yellow Sea. The Hantan River is a popular site for white-water rafting. History The infectious agent ''Hantaan orthohantavirus'' was first identified in the Hantan River area by Dr. Lee Ho-wang. Because his original publications transliterated the river's name idiosyncratically as "Hantaan," this spelling remains associated with the "Hantaan virus." The name is also applied to the virus genus ''Orthohantavirus'' (formerly ''Hantavirus''), as well as its family ''Hantaviridae''. In 2007 construction of the Hantangang Dam began on its lower course. It was expected to be complete in mid-2015. The sole purpose of the dam is flood control. It is also a battleground in the 6/25 war, but the riverside is beautiful, so the Hantang River National Tourist Resort is established. See also * Rivers of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravity Dam
A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by using only the weight of the material and its resistance against the foundation to oppose the horizontal pressure of water pushing against it. Gravity dams are designed so that each section of the dam is stable and independent of any other dam section. Characteristics Gravity dams generally require stiff rock foundations of high bearing strength (slightly weathered to fresh), although in rare cases, they have been built on soil foundations. The bearing strength of the foundation limits the allowable position of the resultant force, influencing the overall stability. Also, the stiff nature of the gravity dam structure is unforgiving to differential foundation settlement, which can induce cracking of the dam structure. Gravity dams provide some advantages over embankment dams, the main advantage being that they can tolerate minor over-topping flows without damage, as the concre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flood Control
Flood control methods are used to reduce or prevent the detrimental effects of flood waters."Flood Control", MSN Encarta, 2008 (see below: Further reading). Flood relief methods are used to reduce the effects of flood waters or high water levels. Flooding can be caused by a mix of both natural processes, such as extreme weather upstream, and human changes to waterbodies and runoff. Though building hard infrastructure to prevent flooding, such as flood walls, can be effective at managing flooding, increased best practice within landscape engineering is to rely more on soft infrastructure and natural systems, such as marshes and flood plains, for handling the increase in water. For flooding on coasts, coastal management practices have to not only handle changes water flow, but also natural processes like tides. Flood control and relief is a particularly important part of climate change adaptation and climate resilience, both sea level rise and changes in the weather (climate cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daelim
Daelim Industrial was established in 1939, and its E&C (Engineering & Construction) and Petrochemical Groups are the main lead of the Daelim Business Conglomerate (Chaebol). The fields covered by Daelim Industrial as one of the top EPC Company in Asia to the Middle East include gas, petroleum refining, chemical and petrochemical, power and energy plants, building and housing, civil works, and industrial facilities. DL Group is considered one of the top and largest chaebol companies in South Korea. Daelim Group has 17 subsidiary companies under its umbrella, which includes Daelim Industrial (Construction Division), Daelim Industrial (Petrochemical Division), Daelim Corporation, which handles trading and import & export of petrochemical products, Daelim Motors, which manufactures motorcycles and automobile components, Korea Development Corporation a construction company, handling major projects in Korea, Samho Corporation, a construction company which also handles major Korean ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spillway
A spillway is a structure used to provide the controlled release of water downstream from a dam or levee, typically into the riverbed of the dammed river itself. In the United Kingdom, they may be known as overflow channels. Spillways ensure that water does not damage parts of the structure not designed to convey water. Spillways can include floodgates and fuse plugs to regulate water flow and reservoir level. Such features enable a spillway to regulate downstream flow—by releasing water in a controlled manner before the reservoir is full, operators can prevent an unacceptably large release later. Other uses of the term "spillway" include bypasses of dams and outlets of channels used during high water, and outlet channels carved through natural dams such as moraines. Water normally flows over a spillway only during flood periods, when the reservoir has reached its capacity and water continues entering faster than it can be released. In contrast, an intake tower is a structure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dams In South Korea
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 can be evenly distributed between locations. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees (also known as dikes) are used to manage or prevent water flow into specific land regions. The earliest known dam is the Jawa Dam in Jordan, dating to 3,000 BC. The word ''dam'' can be traced back to Middle English, and before that, from Middle Dutch, as seen in the names of many old cities, such as Amsterdam and Rotterdam. History Ancient dams Early dam building took place in Mesopotamia and the Middle East. Dams were used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flood Control In South Korea
A flood is an overflow of water (list of non-water floods, or rarely other fluids) that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrology and are of significant concern in agriculture, civil engineering and public health. Environmental issues, Human changes to the environment often increase the intensity and frequency of flooding, for example land use changes such as deforestation and Wetland conservation, removal of wetlands, changes in waterway course or flood controls such as with levees, and larger environmental issues such as climate change and sea level rise. In particular climate change's Effects of climate change on weather, increased rainfall and Extreme weather, extreme weather events increases the severity of other causes for flooding, resulting in more intense floods and increased flood risk. Flooding may occur as an overflow of water ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravity Dams
A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by using only the weight of the material and its resistance against the foundation to oppose the horizontal pressure of water pushing against it. Gravity dams are designed so that each section of the dam is stable and independent of any other dam section. Characteristics Gravity dams generally require stiff rock foundations of high bearing strength (slightly weathered to fresh), although in rare cases, they have been built on soil foundations. The bearing strength of the foundation limits the allowable position of the resultant force, influencing the overall stability. Also, the stiff nature of the gravity dam structure is unforgiving to differential foundation settlement, which can induce cracking of the dam structure. Gravity dams provide some advantages over embankment dams, the main advantage being that they can tolerate minor over-topping flows without damage, as the concre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
