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Through inspection, seepage lines appeared on the downstream roof of the dam from the downstream roof muscle to the base of the dam (mechanical elevation is 1,373 m); These absorbent streaks appear along the body of the dam and water seeps in to wet the roof downstream more than is allowed. The surface of the dam also sank, cracks appeared, especially in the corner adjacent to the main spillway. Meanwhile, the overflow bridge also degrades, which does not guarantee large vehicle traffic.
The Tuyen Lam Reservoir was built in the 1980s, the flood discharge was repaired and improved in 1997. This is the largest freshwater lake in the city of Da Lat with a capacity of almost 28 million m3, which serves to irrigate around 2,400 hectares of land. downstream production. The earth dam has a length of 240 m and a maximum height of 32 m. The crest of the dam is not designed for the passage of large trucks.
After 40 years of operation, the dam has degraded the phenomenon, at the same time that the Tuyen Lam Lake area is also recognized as a national tourist area, around the lake there are many investment projects, so the number of large trucks what happens. Dams and bridges largely spill over a long period of time, disrupting the structure of the dam. Particularly in this area of the dam, every day many people and tourists focus on tourism, entertainment and relaxation, so the aforementioned deterioration not only endangers the construction and downstream, but also affects construction safety. full of people and visitors.
Given the above situation, the Lam Dong Center for Investment and Economic Management has reported to the Department of Agriculture and Rural Development of Lam Dong and this department has informed the Provincial People’s Committee to request the Department of Transportation to chair and coordinate with the National Board of Tourism Management of Lake Tuyen Lam. , Center for QLĐT-KTTL Lam Dong has a plan to divert traffic to limit the passage of heavy vehicles through the dam. At the same time, the province is requested to inform the Prime Minister and the ministries and agencies to organize funds for the emergency repair of this lake (about 30 billion VND).
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