SPECIAL GEODETIC MONITORING OF ROCKFILL DAMS - RÂUŞOR DAM CASE
The monitoring of the construction behavior is one of the important activities carried out to determine the state of construction, subject to various natural and anthropogenic actions at a given time. In Romania, the activity of rockfill dams monitoring is regulated according to the importance categ...
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Published in | International Multidisciplinary Scientific GeoConference : SGEM Vol. 19; no. 2.2; pp. 319 - 326 |
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Main Authors | , , , , |
Format | Conference Proceeding |
Language | English |
Published |
Sofia
Surveying Geology & Mining Ecology Management (SGEM)
01.01.2019
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Subjects | |
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Abstract | The monitoring of the construction behavior is one of the important activities carried out to determine the state of construction, subject to various natural and anthropogenic actions at a given time. In Romania, the activity of rockfill dams monitoring is regulated according to the importance category (A, B, C). The Râuşor Dam is located downstream of the confluence of the River Râuşor with the river Târgului, which springs from the Iezer-Păpuşa Mountains. The dam is located at 7.5 km from the village of Lereşti, 14 km by Câmpulung Muscel downstream and 7 km away of the Voina cottage upstream. The dam was built from rockfill with a slightly curved horizontal core. The construction began in 1976, was completed in 1987 and the finishing reception in 1990. The dam is 105m high and 380m long. The Râuşor reservoir has a surface of 190 ha and a volume of water of 60 million cubic meters and is 4.5 km long on the river Târgului and 2.8 km on the river Râuşor. The Râuşor accumulation supplies the Lereşti, Voineşti and Campulung Muscel municipalities with water. Being part of importance category B, this dam is also monitored by geodetic methods with an annual spring repeat rate. Because of the fact that in the area of the longitudinal axis of the dam, the annual compaction rate has reached a value of over 1 cm and in the downstream area there have been rocks drifting, the institution that manages this dam decided to monitor this area at a 3-month period (4 seasons) using geodetic methods. To this end, the geodetic network of the dam was upgraded with tracking points arranged in the rockfills in the area where displacements occurred. A number of 8 stages of geodetic measurements were carried out between April 2017 and November 2018. These measurements included distances, directions, and level differences to determine the displacements of the tracked points. As the results were the plane coordinates and the heights obtained, as well as various suggestive graphs showing the vectors of the displacements between the stages and the velocities. This paper presents the stages of geodetic measurements performed to monitor the special area, the problems encountered in keeping the horizontal and vertical datum, performing the measurements, as well as the results expressed by coordinates and velocities of the monitored points. |
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AbstractList | The monitoring of the construction behavior is one of the important activities carried out to determine the state of construction, subject to various natural and anthropogenic actions at a given time. In Romania, the activity of rockfill dams monitoring is regulated according to the importance category (A, B, C). The Râuşor Dam is located downstream of the confluence of the River Râuşor with the river Târgului, which springs from the Iezer-Păpuşa Mountains. The dam is located at 7.5 km from the village of Lereşti, 14 km by Câmpulung Muscel downstream and 7 km away of the Voina cottage upstream. The dam was built from rockfill with a slightly curved horizontal core. The construction began in 1976, was completed in 1987 and the finishing reception in 1990. The dam is 105m high and 380m long. The Râuşor reservoir has a surface of 190 ha and a volume of water of 60 million cubic meters and is 4.5 km long on the river Târgului and 2.8 km on the river Râuşor. The Râuşor accumulation supplies the Lereşti, Voineşti and Campulung Muscel municipalities with water. Being part of importance category B, this dam is also monitored by geodetic methods with an annual spring repeat rate. Because of the fact that in the area of the longitudinal axis of the dam, the annual compaction rate has reached a value of over 1 cm and in the downstream area there have been rocks drifting, the institution that manages this dam decided to monitor this area at a 3-month period (4 seasons) using geodetic methods. To this end, the geodetic network of the dam was upgraded with tracking points arranged in the rockfills in the area where displacements occurred. A number of 8 stages of geodetic measurements were carried out between April 2017 and November 2018. These measurements included distances, directions, and level differences to determine the displacements of the tracked points. As the results were the plane coordinates and the heights obtained, as well as various suggestive graphs showing the vectors of the displacements between the stages and the velocities. This paper presents the stages of geodetic measurements performed to monitor the special area, the problems encountered in keeping the horizontal and vertical datum, performing the measurements, as well as the results expressed by coordinates and velocities of the monitored points. |
Author | Rus, Tiberiu Ilie, Andrei Serban Danciu, Valentin Moldoveanu, Constantin Plopeanu, Marin |
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SubjectTerms | Anthropogenic factors Area Confluence Construction Dam construction Dams Damsites Deformation Displacement Downstream Geodetic measurements Graphs Interferometry Measuring instruments Methods Monitoring Mountains Municipalities Rivers Rockfill Rockfill dams Tracking Vectors Water springs |
Title | SPECIAL GEODETIC MONITORING OF ROCKFILL DAMS - RÂUŞOR DAM CASE |
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