An embankment dam is a large artificial dam . It is typically created by the placement and compaction of a complex semi- plastic mound of various compositions of soil or rock. It has a semi-pervious waterproof natural covering for its surface and a dense, impervious core. This makes the dam impervious to surface or seepage erosion . Such a dam is composed of fragmented independent material particles. The friction and interaction of particles binds the particles together into a stable mass rather than by the use of a cementing substance.
31-651: Kangra district is the most populous district of the Indian state of Himachal Pradesh . Dharamshala is the administrative headquarters of the district. Kangra is known for having one of the oldest serving Royal Dynasty in the world, the Katoch of the Kangra State . In 1758, Raja Ghamand Chand was appointed nazim or governor of Jullundur Doab under the Afghans. Ghamand Chand was a brave and strong ruler who restored
62-418: A dam and the filling of the reservoir behind it places a new weight on the floor and sides of a valley. The stress of the water increases linearly with its depth. Water also pushes against the upstream face of the dam, a nonrigid structure that under stress behaves semiplastically, and causes greater need for adjustment (flexibility) near the base of the dam than at shallower water levels. Thus the stress level of
93-542: A literacy rate of 85.67%. Scheduled Castes and Scheduled Tribes made up 21.15% and 5.60% of the population respectively. District highlights of 2011 Census The native people are the Kangri people and the native language is Kangri , which is very similar to Dogri . The majority of the people are Hindu , although many Tibetans and others who follow Buddhism have also settled here recently. There are also other minorities such as Sikhs, Muslims, and Christians. Jhamakda
124-631: A major centre for the arts and several palaces were built. In 1805, the neighbouring hill states rebelled, with the aid of the Gurkha army. Raja Sansar Chand was forced to seek the help of Maharaja Ranjit Singh of the Sikh Empire . The Gurkha army was expelled but Ranjit Singh also annexed the most fertile part of the Kangra valley, reducing the Katochs of Kangra as well as the neighbouring rajas to
155-434: A simple embankment of well-compacted earth. A homogeneous rolled-earth dam is entirely constructed of one type of material but may contain a drain layer to collect seep water. A zoned-earth dam has distinct parts or zones of dissimilar material, typically a shell of locally plentiful material with a watertight clay core. Modern zoned-earth embankments employ filter and drain zones to collect and remove seep water and preserve
186-404: A small sustained overtopping flow can remove thousands of tons of overburden soil from the mass of the dam within hours. The removal of this mass unbalances the forces that stabilize the dam against its reservoir as the mass of water still impounded behind the dam presses against the lightened mass of the embankment, made lighter by surface erosion. As the mass of the dam erodes, the force exerted by
217-686: A thick suspension of earth, rocks and water. Therefore, safety requirements for the spillway are high, and require it to be capable of containing a maximum flood stage. It is common for its specifications to be written such that it can contain at least a one-hundred-year flood. A number of embankment dam overtopping protection systems were developed in the early 21st century. These techniques include concrete overtopping protection systems, timber cribs , sheet-piles , riprap and gabions , Reinforced Earth , minimum energy loss weirs , embankment overflow stepped spillways , and precast concrete block protection systems. All dams are prone to seepage underneath
248-436: Is a folk dance of Kangra. It is exclusively performed by women. It features percussion instruments and songs. Languages of Kangra district (2011) At the 2011 Census, 70.88% of the population in the district spoke Kangri , 14.92% Pahari , 5.55% Hindi , 2.64% Gaddi and 2.06% Punjabi as their first language. Dhauladhar Wildlife Sanctuary is located at an altitude of 1600 m going up to 4400 m, Dhauladhar Wildlife Sanctuary
279-406: Is a good choice for sites with wide valleys. They can be built on hard rock or softer soils. For a rock-fill dam, rock-fill is blasted using explosives to break the rock. Additionally, the rock pieces may need to be crushed into smaller grades to get the right range of size for use in an embankment dam. Earth-fill dams, also called earthen dams, rolled-earth dams or earth dams, are constructed as
310-630: Is a large dam on the Indus River in Pakistan , about 50 km (31 mi) northwest of Islamabad . Its height of 485 ft (148 m) above the river bed and 95 sq mi (250 km ) reservoir make it the largest earth-filled dam in the world. The principal element of the project is an embankment 9,000 feet (2,700 m) long with a maximum height of 465 feet (142 m). The dam used approximately 200 million cubic yards (152.8 million cu. meters) of fill, which makes it one of
341-543: Is headed by a Deputy Commissioner or District Magistrate, an officer belonging to the Indian Administrative Service . The district magistrate or the deputy commissioner is assisted by a number of officers belonging to Himachal Administrative Service and other Himachal state services. A District Judge serves as the head of the Judiciary of the district. Courts subordinate to him include those of
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#1732771887440372-637: Is spread through the submerged area between Pong Dam Terrace (Talwara) to the bridge on Beas River at Dehra. It was created in1975, by building the highest earthfill dam in India on the Beas River in the wetland zone of the Siwalik Hills . List of districts of Himachal Pradesh The northern Indian state of Himachal Pradesh is divided into 12 districts, the Revenue department of which
403-645: The Indian Forest Service is responsible for managing the Forests, environment and wild-life related issues of the district. He is assisted by the officers of the Himachal Forest Service and other Himachal Forest officials and Himachal Wild-Life officials. Sectoral development is looked after by the district head of each development department such as PWD, Health, Education, Agriculture, Animal husbandry, etc. These officers belong to
434-617: The Civil Judges, Senior Civil Judges, and Judicial Magistrates. A Superintendent of Police , an officer belonging to the Indian Police Service is entrusted with the responsibility of maintaining law and order and related issues of the district. He is assisted by the officers of the Himachal Police Service and other Himachal Police officials. A Deputy Conservator of Forests, an officer belonging to
465-637: The asphalt make such dams especially suited to earthquake regions. For the Moglicë Hydro Power Plant in Albania the Norwegian power company Statkraft built an asphalt-core rock-fill dam. Upon completion in 2018 the 320 m long, 150 m high and 460 m wide dam is anticipated to be the world's highest of its kind. A concrete-face rock-fill dam (CFRD) is a rock-fill dam with concrete slabs on its upstream face. This design provides
496-549: The concrete slab as an impervious wall to prevent leakage and also a structure without concern for uplift pressure. In addition, the CFRD design is flexible for topography, faster to construct and less costly than earth-fill dams. The CFRD concept originated during the California Gold Rush in the 1860s when miners constructed rock-fill timber-face dams for sluice operations . The timber was later replaced by concrete as
527-406: The core is separated using a filter. Filters are specifically graded soil designed to prevent the migration of fine grain soil particles. When suitable building material is at hand, transport is minimized, leading to cost savings during construction. Rock-fill dams are resistant to damage from earthquakes . However, inadequate quality control during construction can lead to poor compaction and sand in
558-406: The dam must be calculated in advance of building to ensure that its break level threshold is not exceeded. Overtopping or overflow of an embankment dam beyond its spillway capacity will cause its eventual failure . The erosion of the dam's material by overtopping runoff will remove masses of material whose weight holds the dam in place and against the hydraulic forces acting to move the dam. Even
589-490: The dam, but embankment dams are prone to seepage through the dam as well; for example, the Usoi landslide dam leaks 35-80 cubic meters per second. Sufficiently fast seepage can dislodge a dam's component particles, which results in faster seepage, which turns into a runaway feedback loop that can destroy the dam in a piping-type failure. Seepage monitoring is therefore an essential safety consideration. gn and Construction in
620-456: The design was applied to irrigation and power schemes. As CFRD designs grew in height during the 1960s, the fill was compacted and the slab's horizontal and vertical joints were replaced with improved vertical joints. In the last few decades, design has become popular. The tallest CFRD in the world is the 233 m-tall (764 ft) Shuibuya Dam in China , completed in 2008. The building of
651-431: The district were initially at Kangra, but were moved to Dharamshala in 1855. According to the 2011 census Kangra district had population of 1,510,075. The district has a population density of 263 inhabitants per square kilometre (680/sq mi). Its population growth rate over the decade 2001-2011 was 12.77%. 5.71% of the population lives in urban areas. Kangra district has a sex ratio of 1012 females per 1000 males and
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#1732771887440682-578: The embankment which can lead to liquefaction of the rock-fill during an earthquake. Liquefaction potential can be reduced by keeping susceptible material from being saturated, and by providing adequate compaction during construction. An example of a rock-fill dam is New Melones Dam in California or the Fierza Dam in Albania . A core that is growing in popularity is asphalt concrete . The majority of such dams are built with rock and/or gravel as
713-453: The integrity of the downstream shell zone. An outdated method of zoned earth dam construction used a hydraulic fill to produce a watertight core. Rolled-earth dams may also employ a watertight facing or core in the manner of a rock-fill dam. The frozen-core dam is a temporary earth dam occasionally used in high latitudes by circulating a coolant through pipes inside the dam to maintain a watertight region of permafrost within it. Tarbela Dam
744-449: The largest man-made structures in the world. Because earthen dams can be constructed from local materials, they can be cost-effective in regions where the cost of producing or bringing in concrete would be prohibitive. Rock -fill dams are embankments of compacted free-draining granular earth with an impervious zone. The earth used often contains a high percentage of large particles, hence the term "rock-fill". The impervious zone may be on
775-503: The prestige of Kangra. As he was unable to capture Kangra Fort , he built another fort at Tira Sujanpur on the left bank of the Beas , almost opposite to Alampur on a hill overlooking the town. He died in 1774 and was succeeded by his son, Tegh Chand, who died too soon in 1775. Ghamand Chand's grandson, Raja Sansar Chand (r. 1775–1823) established the supremacy of Kangra over all the surrounding hill states. During his reign, Kangra became
806-424: The primary fill. Almost 100 dams of this design have now been built worldwide since the first such dam was completed in 1962. All asphalt-concrete core dams built so far have an excellent performance record. The type of asphalt used is a viscoelastic - plastic material that can adjust to the movements and deformations imposed on the embankment as a whole, and to settlement of the foundation. The flexible properties of
837-501: The reservoir begins to move the entire structure. The embankment, having almost no elastic strength, would begin to break into separate pieces, allowing the impounded reservoir water to flow between them, eroding and removing even more material as it passes through. In the final stages of failure, the remaining pieces of the embankment would offer almost no resistance to the flow of the water and continue to fracture into smaller and smaller sections of earth or rock until they disintegrate into
868-562: The status of vassals. Kangra was annexed by Maharaja Ranjit Singh's Sikh Empire in 1810. Kangra became a district of British India in 1846, when it was ceded to British India at the conclusion of the First Anglo-Sikh War . The British district included the present-day districts of Kangra, Hamirpur , Kullu , and Lahul and Spiti . Kangra District was part of the British province of Punjab . The administrative headquarters of
899-404: The upstream face and made of masonry , concrete , plastic membrane, steel sheet piles, timber or other material. The impervious zone may also be inside the embankment, in which case it is referred to as a "core". In the instances where clay is used as the impervious material, the dam is referred to as a "composite" dam. To prevent internal erosion of clay into the rock fill due to seepage forces,
930-479: The various State Services. Earthfill dam Embankment dams come in two types: the earth-filled dam (also called an earthen dam or terrain dam ) made of compacted earth, and the rock-filled dam . A cross-section of an embankment dam shows a shape like a bank, or hill. Most have a central section or core composed of an impermeable material to stop water from seeping through the dam. The core can be of clay, concrete, or asphalt concrete . This type of dam
961-632: Was established in 1994 by the Wildlife Department of Himachal Pradesh Government. It is situated in Kangra district. The wildlife sanctuary is covered by snow-clad mountains from three sides. The flora of Dhauladhar Wildlife Sanctuary includes deodar, rhododendron, oak, spruce, pine, and mixed conifers. This wildlife sanctuary is home to animals such as red fox, black bear, leopard sambar, Asiatic lion, angora rabbit, and deer. It covers an area of 982.86 sq.km. Pong Dam Lake Wildlife Sanctuary covers an areas of 207.95 sq. km. in Kangra district. It