Heishishan reservoir

Heishishan reservoir

Heishishan reservoir is located in Delingha City, Haixi Prefecture, Qinghai Province. It is a medium-sized water conservancy project with comprehensive benefits of power generation, tourism and aquaculture, mainly for irrigation and flood control. Heishishan pass of Bayin River, 4km to the north of Delingha City, has an average annual discharge of 10.2 m3 / s and an annual runoff of 320 million m3.

Reservoir scale

The total storage capacity is 36.64 million cubic meters, mainly providing water for Heishishan irrigation area and drinking water. The designed irrigation area is 11300 hectares, and the actual irrigation area is 9333 hectares. The installed capacity of the hydropower station is 3 ′ 1000 kW and the annual power generation is 15.89 million KW. H. The total storage capacity of the reservoir is 36.64 million cubic meters, the dead storage capacity is 50000 cubic meters, the profitable storage capacity is 31.19 million cubic meters, and the flood regulation storage capacity is 5.4 million cubic meters.

structure

The main buildings of the reservoir are composed of main dam, water conveyance tunnel, penstock, powerhouse, auxiliary dam, spillway, sand flushing tunnel, etc. The main dam is a sand shell dam with clay core, the maximum dam height is 34.5m, the dam crest length is 160.50m, and the auxiliary dam is a sand gravel dam with geomembrane horizontal covering, the dam height is 10m, and the length is 293M.

effect

The reservoir plays an important role in the development of national economy in Delingha area.

Project plan

The project was officially started in August 1987, impounded in late August 1991 and completed in 1992. At present, the reservoir has serious leakage, the geomembrane horizontal blanket is aging and failure, and the service gate has serious leakage. It is identified as a class III dam, which needs reinforcement and maintenance. It needs to invest 22.13 million yuan, and the planned construction period is 2 years.

Post earthquake reinforcement

Heishishan reservoir is located 4 kilometers north of Delingha City, Haixi Prefecture. It is a comprehensive medium-sized reservoir mainly for irrigation and flood control, supplemented by power generation, tourism and breeding. The total storage capacity is 36.64 million cubic meters. The reservoir is affected by complex geological conditions and earthquake, and the leakage is relatively large. After the m S6.6 earthquake occurred in Delingha area in 2003, the leakage of the dam was aggravated. In order to ensure the safe operation of the reservoir, our province raised 8 million yuan to reinforce the Heishishan reservoir after the earthquake. After on-site inspection and listening to the report, relevant experts believe that the post earthquake reinforcement treatment project of Heishishan reservoir has been basically completed in accordance with the approved contents of the design, and the project quality has been recognized by the provincial quality supervision station. After treatment, the leakage of the main dam section has been reduced by 94%, basically achieving the purpose of post earthquake reinforcement treatment. After treatment, the water storage in that year is 4.32 million cubic meters more than that in previous years, The project has brought initial benefits into play.

Related reports

Hu Siyi, Vice Minister of water resources, led the state general inspection team to inspect the Heishishan reservoir and irrigation area in Delingha city.

Heishishan reservoir is an annual regulating reservoir with a controlled irrigation area of 169000 mu. In recent years, Delingha city has strengthened the reservoir, completed curtain grouting of the main dam, maintenance of spillway and outlet of flushing tunnel, reinforcement of flood dike, comprehensive pressure measurement of dam observation project, measuring weir and temporary facilities. At present, the leakage of the main dam is obviously reduced. However, due to the lack of funds, the seepage of the auxiliary dam is serious and there are still potential safety hazards. Hu Siyi pointed out after listening to the introduction of relevant departments that the location of Heishishan reservoir is very special, and the flood control work is particularly important, which is directly related to the safety of people's lives and property in Delingha city. We must try every means to do a good job in the reinforcement of the reservoir to ensure the safety of flood control.

Hu also inspected the irrigation area of Heishishan reservoir. According to reports, most of the irrigation water conservancy facilities were built in the 1950s and 1960s. They are seriously aged and in disrepair, and some sections have formed large gullies.

Address: Heishishan pass of Bayin River, 4km north of Delingha City

Longitude: 97.371124267578

Latitude: 37.395938873291

Chinese PinYin : Hei Shi Shan Shui Ku