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Washaways
A washaway is a particular kind of landslide that can affect man-made structures such as cuttings, embankments and bridges. They are thus a hazard to railways and road traffic. Overview The biggest danger with washaways is that they may be difficult to spot in time to stop short of the point where one falls over the edge and/or into the water where one may drown. Repairs An embankment that is washed away can be repaired or restored by replacing the washed away earth, which is necessarily large because embankments have a gentle slope. A quicker method is to replace the washed out earth with a criss-cross structure of timber steepers called a pigsty which is only slightly wider than the track itself. The pigsty has alternating layers of transverse and longitudinal layers of these sleepers, which contains a lot of air which saves weight. Steel and concrete sleepers are not necessarily suitable for this purpose as they are either not square or fragile. The sleepers in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landslide
Landslides, also known as landslips, are several forms of mass wasting that may include a wide range of ground movements, such as rockfalls, deep-seated slope failures, mudflows, and debris flows. Landslides occur in a variety of environments, characterized by either steep or gentle slope gradients, from mountain ranges to coastal cliffs or even underwater, in which case they are called submarine landslides. Gravity is the primary driving force for a landslide to occur, but there are other factors affecting slope stability that produce specific conditions that make a slope prone to failure. In many cases, the landslide is triggered by a specific event (such as a heavy rainfall, an earthquake, a slope cut to build a road, and many others), although this is not always identifiable. Causes Landslides occur when the slope (or a portion of it) undergoes some processes that change its condition from stable to unstable. This is essentially due to a decrease in the shear stren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lahar
A lahar (, from jv, ꦮ꧀ꦭꦲꦂ) is a violent type of mudflow or debris flow composed of a slurry of pyroclastic material, rocky debris and water. The material flows down from a volcano, typically along a river valley. Lahars are extremely destructive: they can flow tens of metres per second, they have been known to be up to deep, and large flows tend to destroy any structures in their path. Notable lahars include those at Mount Pinatubo and Nevado del Ruiz, the latter of which killed thousands of people in the town of Armero. Etymology The word ''lahar'' is of Javanese origin. Berend George Escher introduced it as a geological term in 1922. Description The word ''lahar'' is a general term for a flowing mixture of water and pyroclastic debris. It does not refer to a particular rheology or sediment concentration. Lahars can occur as normal stream flows (sediment concentration of less than 30%), hyper-concentrated stream flows (sediment concentration between 30 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landslide Types
Landslides, also known as landslips, are several forms of mass wasting that may include a wide range of ground movements, such as rockfalls, deep-seated slope failures, mudflows, and debris flows. Landslides occur in a variety of environments, characterized by either steep or gentle slope gradients, from mountain ranges to coastal cliffs or even underwater, in which case they are called submarine landslides. Gravity is the primary driving force for a landslide to occur, but there are other factors affecting slope stability that produce specific conditions that make a slope prone to failure. In many cases, the landslide is triggered by a specific event (such as a heavy rainfall, an earthquake, a slope cut to build a road, and many others), although this is not always identifiable. Causes Landslides occur when the slope (or a portion of it) undergoes some processes that change its condition from stable to unstable. This is essentially due to a decrease in the shear strength ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Washout (erosion)
A washout is the sudden erosion of soft soil or other support surfaces by a gush of water, usually occurring during a heavy downpour of rain (a flash flood) or other stream flooding. These downpours may occur locally in a thunderstorm or over a large area, such as following the landfall of a tropical cyclone. If a washout occurs in a crater-like formation, it is called a sinkhole, and it usually involves a leaking or broken water main or sewerage pipes. Other types of sinkholes, such as collapsed caves, are not washouts. Widespread washouts can occur in mountainous areas after heavy rains, even in normally dry ravines. A severe washout can become a landslide, or cause a dam break in an earthen dam. Like other forms of erosion, most washouts can be prevented by vegetation whose roots hold the soil and/or slow the flow of surface and underground water. Deforestation increases the risk of washouts. Retaining walls and culverts may be used to try to prevent washouts, although par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Rail Accidents
This is the list of rail accident lists. Lists By year By type * By country * By death toll * Terrorist incidents See also * Classification of railway accidents * Derailment *Rail Transport * Train wreck * Tram accident A tram accident is any accident involving a tram. Alternatively, any accident involving a tram or a tram system may be considered a tram accident. The latter definition is more commonly used in public safety studies. Tram systems are typically ... * Train-pedestrian fatalities {{DEFAULTSORT:Rail accidents ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peruman Railway Accident
The Peruman railway accident occurred on 8 July 1988, when a train derailed on the Peruman bridge over Ashtamudi Lake in Kerala, India and fell into the water, killing 105 people. The cause was never established, but was blamed on track alignment and faulty wheels, possibly compounded by failure to notify maintenance workers about the approach of a delayed train that had been making-up time by travelling at excessive speed. Derailment The accident occurred at Peruman bridge over Ashtamudi Lake, Perinadu, Kollam, Kerala, on 8 July 1988 at around 13:15 Hrs. Ten bogie carriages of the Train Number:26 Island Express, travelling from Bangalore to Thiruvananthapuram Central, derailed and fell into the lake. Of the 14 coaches, only the engine, the parcel van and a second class compartment had crossed the bridge when the derailment occurred. Two of the nine coaches that fell into the water turned upside down. Rescue operations The rescue operations were started immediately by the loca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marcellinara
Marcellinara ( Calabrian: ) is a ''comune'' and town in the province of Catanzaro in the Calabria region of southern Italy. It is a small village located in the middle of the narrowest strip (isthmus) of Italy and one of the narrowest of Europe as well, between the Ionian (East) and the Tyhrennian (West) seas; the distance between them is only 40 km. It is located close to both the regional capital of Catanzaro and the international airport of Lamezia Terme. Transport The village is around 20 minutes far away from Lamezia Terme International Airport Lamezia Terme International Airport ( it, link=no, Aeroporto Internazionale di Lamezia Terme "Sant'Eufemia") is an airport in the Sant'Eufemia district of Lamezia Terme, Calabria, Italy. It is the principal airport of Calabria. Additionally, a ..., from Lamezia Terme Centrale railway station and from the A3 Salerno-Reggio Calabria high-way exit of the same Lamezia Terme. It is also 15 minutes away from the train stat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feroleto Antico
Feroleto Antico ( Calabrian: ) is a ''comune'' and town in the province of Catanzaro in the Calabria region of Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical .... Transport A railway bridge between here and Marcellinara was washed away by flood waters in 2011.''Today's Railway Europe'', 213, pg 55 References Cities and towns in Calabria {{Calabria-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Veligonda Train Disaster
The Valigonda rail disaster occurred on 29 October 2005 near the town of Valigonda, south of Hyderabad in the Indian state of Andhra Pradesh. A flash flood swept away a small rail bridge, and a " Delta Fast Passenger" train traveling on it derailed at the broken section of the line, killing at least 114 people and injuring over 200. Accident details The train was traveling south at night, packed with hundreds of sleeping holiday makers visiting relatives for Diwali, when a huge irrigation tank situated upstream from the rail lines ruptured, sending thousands of gallons of water down the channel, destroying the bridge in the darkness. When the passenger train hit the broken section a short time later, nobody had reported the damage, and the engine and seven coaches of the train disappeared into the gap created by the broken line. Four coaches crashed into a field close to where the track had been, whilst three more fell into the channel and were swept farther afield into ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ngai Ndethya
Ngai (also called Múrungu or Enkai) is the monolithic Supreme God in the spirituality of the Kikuyu (or Gikuyu) and the closely related Embu, Meru and Kamba groups of Kenya, and the Maasai of Kenya and Tanzania. Ngai is creator of the universe and all in it. Regarded as the omnipotent God,Middleton, John; Kershaw, Greet ; ''The Kikuyu and Kamba of Kenya: East Central Africa, Part 5,'' Routledge (reprint, 2017), p. 128,(Retrieved 5 April 2019) the Kikuyu, Embu, Meru, Kamba and the Maasai of Kenya worshiped Ngai facing the Mt. Kirinyaga (Mount Kenya) while prayers and goat sacrificial rituals were performed under the sacred Mugumo tree (a fig tree species). Occasions which may warrant sacrifice or libation include times of drought; epidemics; during planting and harvesting; and human life stages such as birth, marriage and death. Ngai in Kikuyu, Embu, Meru and Kamba Worship Ngai was often referred to as "Mwene Nyaga", meaning "Owner of the Dazzling Light". Kenyan anthropologist, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Australia
South Australia (commonly abbreviated as SA) is a state in the southern central part of Australia. It covers some of the most arid parts of the country. With a total land area of , it is the fourth-largest of Australia's states and territories by area, and second smallest state by population. It has a total of 1.8 million people. Its population is the second most highly centralised in Australia, after Western Australia, with more than 77 percent of South Australians living in the capital Adelaide, or its environs. Other population centres in the state are relatively small; Mount Gambier, the second-largest centre, has a population of 33,233. South Australia shares borders with all of the other mainland states, as well as the Northern Territory; it is bordered to the west by Western Australia, to the north by the Northern Territory, to the north-east by Queensland, to the east by New South Wales, to the south-east by Victoria, and to the south by the Great Australian Bight.M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crystal Brook, South Australia
Crystal Brook is a town in the Mid North of South Australia, 197 kilometres north of the capital, Adelaide. In 2016, the population of the town/postcode was 1,935. Crystal Brook is in a very picturesque location, being at the start of the Flinders Ranges. The town has multiple viewing points and parks. It was named after the spring-fed creek next to which it was founded. Crystal Brook is the second largest town after the city of Port Pirie in the Southern Flinders Ranges area. The shady peppercorn trees grace the main street, Bowman Street. The area where the present town is now was founded in 1839 by Edward John Eyre who was passing through the region. He named it after the beautiful sparkling clear water and named it 'Chrystal Brook'. Crystal Brook is north of Adelaide. The town has had some growth over the past year or two with more proposed job opportunities in the region. Crystal Brook is situated on Goyder's Line near the border of two climate systems. The township of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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