Studio Pietrangeli l dams & hydropower engineering’s Post

PHPA-I to go ahead with dam construction if both parties agree on stabilisation measures After 11 years, 34 Technical Coordination Committee (TCC) meetings, numerous geo-technical studies, and cost escalation running into billions, the stalled dam construction for the 1,200MW Punatsangchhu-I hydropower project might finally resume after the TCC meets for the last time in New Delhi, India next month to make the final call. The PHPA-I dam construction was stopped after a major slide occurred on the right-bank of the site, leading to an indefinite deferral. After experts carried out several rounds of geo-technical studies, two possible solutions were floated – to either build a dam or barrage – to salvage the mega hydropower project. https://lnkd.in/gx4D7riB

Spillway Upper Stilling Basin Mass Concrete of Left Side Wall Foundation, Mohmand Dam Hydropower Project 800 MW What is Mass Concrete? Mass concrete refers to large volumes of concrete used in structures such as dams, foundations, and bridges, where the concrete is placed in a single continuous pour. This type of concrete requires special considerations to prevent thermal cracking, and to ensure proper hydration and achieve the desired strength and durability. Class G concrete is being used for this pour, with a compressive strength of 35 Mpa after 28 days of curing, and an aggregate size of 76 mm. Here are the requirements for mass concrete having Class G 35 Mpa: Slump: Normal weather: (50-100mm) Winter weather: (75-125mm) Hot weather: (25-75 mm) Temperature: Normal weather: 20-25°C Winter weather: 9-13°C Hot weather: 18-22°C Air Content: Normal weather: 4-6% Winter weather: 5-7% Hot weather: 3-5% NOTE: For Slump: ASTM C143 For Temperature: ASTM C1064 For Air Content: ASTM C231

Yusufeli dam: the impressive numbers of a Turkey's engineering marvel Located on the Çoruh River, the Yusufeli Dam and its Hydroelectric Power Plant Project has started to hold water. With a total water storage volume of approximately 2.2 billion cubic meters, the dam is Turkey’s highest dam in double curvature concrete arch dam type with a height of 275 meters. Here you can see an impressive timelapse video of the construction: https://lnkd.in/dY7_Gy7u The plant with a planned installed power of 558 MW will produce 1,888 billion kWh of energy annually. The project includes a total of 5 million 800 thousand cubic meters of concrete, 4 million cubic meters of body concrete, 1 million 800 thousand cubic meters of building (conventional) concrete. Impressive numbers? In the video you can see the 275 m giant filling Video credit: unknown (DM for credit/removal) #structuralengineering #engineering #CivilEngineering #dam #turkey For more: 📌 Follow #ImpressiveEngineering 📌 Click on the 🔔 and select "All"

Hydropower is the best Natural Energy source because it not only provides clean electric power, but also preserves water as a resource for irrigation.

True success is not solely measured by what you achieve, but rather by the qualities and efforts you invest in reaching your goals. Determination and perseverance form the solid groundwork upon which accomplishments are built. #vrgconcrete #vrggroup #vrgconcretemix #concretemix #karur #buildingmaterial #building #concretepour #india #construction #concrete #engineering #windmill #solarpower #greenpower #VRG #constructioncompany

True success is not solely measured by what you achieve, but rather by the qualities and efforts you invest in reaching your goals. Determination and perseverance form the solid groundwork upon which accomplishments are built. #vrgconcrete #vrggroup #vrgconcretemix #concretemix #karur #buildingmaterial #building #concretepour #india #construction #concrete #engineering #windmill #solarpower #greenpower #VRG #constructioncompany

Rogun dam project (Tajikistan-Height of dam 335 meters). The last steps of installing steel lining for crossing through active Ionakhsh fault in diversion tunnel No.4. To design this part of this diversion tunnel, three conditions are considered: ·        First, a steady creeping of 1.8 mm/year shall be handled without any damage and keeping normal operation during the whole design life of the structure. ·        Second, the seismic displacement associated with 475 years return period earthquake, corresponding to 47 cm shall be withstood without loss of hydraulic functionality of the structure keeping the capability to discharge the design flow. ·        Third, direct contact of the pressured flow with the surrounding rock (consisting of gypsum and salt) shall be avoided. Diameter of pipe: 15 m Design head (internal and external): 150 mwc   Main EPC contractor of Lot 3: TGEM – Tajik hydro electr omontaj OJSC.   Designed by: AFRY Switzerland / Tajikhydromontage.

GRAND ETHIOPIAN RENAISSANCE DAM (GERD) The Grand Ethiopian Renaissance Dam (GERD) is poised to be the largest dam in Africa and among the top 10 largest dams in the world. Located approximately 700km northwest of Ethiopia's capital, Addis Ababa, in the Benishangul-Gumuz region along the Blue Nile, this monumental project involves the construction of a main dam using Roller Compacted Concrete (RCC). The dam will measure 1,800m in length, 170m in height, and have a total volume of 10.4 million cubic meters. The GERD will create a reservoir spanning 1,875 square kilometers with a capacity of 74 billion cubic meters of water. The project includes two power stations positioned at the foot of the dam on the right and left banks of the river, equipped with 13 Francis turbines that have a combined installed capacity of 5,150MW and an estimated annual production of 15,700 GWh. In addition to the main dam, the project features a 15,000 cubic meters per second capacity concrete spillway and a rockfill saddle dam, which is located on the left bank and measures 5km in length, 50m in height, and 15.3 million cubic meters in volume. Once operational, the Grand Ethiopian Renaissance Dam will increase Ethiopia's electricity production by 270%, significantly boosting the country's role as an energy exporter to neighbouring countries. The construction of the GERD has incorporated innovative engineering solutions, including a specialized RCC composition developed by global experts to improve the settling time, thereby enhancing the production and quality of the material used. Video by Webuild

Yusufeli dam: timelapse of the construction of an impressive engineering masterpiece! The Yusufeli Dam, located in Artvin Province, Turkey, is an impressive feat of engineering and one of the most ambitious hydroelectric projects in the country. At 275 meters high, it is the tallest arch dam in Turkey and one of the tallest in the world. The dam, built on the Çoruh River, represents an extraordinary example of advanced engineering. Its arch structure was designed to resist enormous hydraulic pressures, optimizing the use of materials and ensuring greater stability than other types of dams. Yusufeli Dam has a capacity of 2.13 billion cubic meters of water and generates approximately 540 MW of electricity, significantly contributing to Turkey's energy grid. One of the most fascinating engineering aspects of this construction is its ability to mitigate the impact of the strong currents of the Çoruh River, one of the fastest rivers in the world, through sophisticated water management systems. The technical challenge posed by its location in a narrow, mountainous valley required the use of advanced construction technologies and 3D modeling techniques to ensure its stability. In addition to its distinction as one of the tallest dams in the world, Yusufeli Dam is also a pioneering example of efficiency in energy production and environmental protection, playing a key role in reducing flood risk and providing clean energy for region. Here you can see the impressive numbers of this giant: https://lnkd.in/dfmWfxWz Video credit: unknown (DM for credit/removal) #structuralengineering #engineering #CivilEngineering #dam #turkey For more: 📌 Follow #ImpressiveEngineering 📌 Click on the 🔔 and select "All"