China News Service, Batang, Sichuan, September 4 (Reporter Wang Peng) "During the feasibility study design of the Batang Hydropower Station, in order to protect the fish spawning grounds at the mouth of the Bachu River, we decided to adjust the location of the diversion tunnel and the outlet of the flood discharge tunnel and give up Natural sand and gravel yard." In early September, the Batang Hydropower Station in the Sichuan-Tibet section of the upper reaches of the Jinsha River was under construction. Tian Yinghui, deputy chief engineer of Huadian Jinshang Batang (Rawa) Branch, told reporters that in order to protect the local ecological environment, the hydropower station deliberately Modify the design plan and increase the project investment by about 200 million yuan.
The Jinsha River, which runs through the three provinces of Sichuan, Tibet, and Yunnan, is the upper reaches of the Yangtze River.
According to the "14th Five-Year Plan", the clean energy base on the upper reaches of the Jinsha River is one of the nine clean energy bases that China will focus on in the next five years.
It is located in the snow-covered plateau, most of the area is more than 4000 meters above sea level, and it is also an important ecological safety barrier.
Recently, the reporter visited the construction sites of the cascade power stations in the upper reaches of the Jinsha River in the Sichuan-Tibet section of Yebatan, Rawa, Batang, and Suwalong and learned that ecological environmental protection has become the top priority in construction.
Batang Hydropower Station under construction.
Photo courtesy of Huadian Jinshang Batang (Rawa) Branch
Digging fish roads to build "elevators" to help fish migrate in the Jinsha River
The Batang Hydropower Station with an installed capacity of 750,000 kilowatts is located at the junction of the Jinsha River and the Bachu River. It will be closed in 2020. The mighty Jinsha River spouts from the diversion tunnel, which is very spectacular.
A sandbar located at the mouth of the Bachu River not far downstream has always been a spawning ground for fish in the upper reaches of the Jinsha River.
"In the construction of a hydropower station, how to protect the fish spawning ground and allow the fish to migrate smoothly to the upper reaches of the hydropower station is a problem we must consider." Tian Yinghui said, so Batang Hydropower Station abandoned the original optimal design plan and used it instead. An ecological fishway is built in the 1km-long section of the Bachu River. Connected to the fishway is a fish-passing tunnel that directly crosses the mountain to ensure the safe migration of fish.
On the left bank slope of Batang Hydropower Station, the fish tunnel is in this mountain.
Photo courtesy of Huadian Jinshang Batang (Rawa) Branch
“In addition to the fish-passing tunnel of the Batang Hydropower Station, three other power stations including Yebatan, Rawa, and Suwalong have also planned to build a fish lift project and a fish collection system.” Tian Yinghui explained to reporters that the project was lured The fish means attract the fish to the fish lift, and then the fish will take the "elevator" and return to the upstream through the fish collection system, thereby protecting the aquatic ecology to the greatest extent.
Data show that during the construction of cascade power stations in the Sichuan-Tibet section of the upper reaches of the Jinsha River, one-third of the natural reach of the upper reaches of the Jinsha River was protected, and the natural reach of main and tributary protections reached 423 kilometers. The construction of the power station avoided the spawning of important fish. Field, bait field.
Fish breeding station of Yebatan Hydropower Station.
Photo courtesy of Huadian Jinshangye Batan Branch
The Fish Breeding Station strengthens the fish population of the Jinsha River
In addition to the construction of fish-passing facilities, during the construction of the Sichuan-Tibet section of the cascade power station in the upper reaches of the Jinsha River, fish breeding stations have also been built to expand the fish population of the Jinsha River through release.
At present, the Suwalong Hydropower Station has built the largest fish breeding station in Tibet, and the Yebatan Hydropower Station has built the first-level fish breeding station of the Yangtze River. Millions of fish fry such as fish thrive in the modern breeding facilities of the breeding station.
Located in the Yebatan Hydropower Station in Gaiyu Township, Baiyu County, Ganzi Prefecture, the fish breeding station, broodstock workshops, fry workshops, spawning and hatching workshops, and fingerling workshops are lined up in rows. Technicians are feeding the fry.
These densely packed fry, only 2 cm long, will eventually be released into the Jinsha River after cultivation and wild domestication.
The picture shows the release of fish from a hydropower station.
Photo courtesy of Huadian Jinshangye Batan Branch
"Yebatan Hydropower Station is the first hydropower station in China that has completed and put into operation a fish breeding station before the river closure, and successfully implemented fish reproduction and release in the same year." said Du Guangyuan, director of the safety and environmental protection department of Huadian Jinshang Yebatan Branch, Yeba The construction of the Tan Power Station will also build the country's first watershed wild domestication base to protect the healthy reproduction of fish in the upper reaches of the Jinsha River.
The reporter learned that as of August this year, the cascade power stations in the Sichuan-Tibet section of the upper Jinsha River had accumulatively proliferated and released 2.1 million fish.
At present, the first fish passing facility in the upper reaches of the Jinsha River is about to be completed.
In the context of the comprehensive ban on fishing in the Yangtze River, these proliferation and release of fry will become an important force in the ecological restoration of the Yangtze River.
The picture shows the release of fish from a hydropower station.
Photo courtesy of Huadian Jinshang Company
Strengthen the protection of terrestrial animals and plants
While protecting fish in the upper reaches of the Jinsha River, the protection of local terrestrial animals and plants is also in full swing.
It is understood that the upper left bank of the dam site of Suwalong Hydropower Station is close to Sichuan Zhubalong Nature Reserve. Therefore, they set up a wildlife monitoring station together with the local government.
"We are equipped with observing equipment such as telescopes and infrared cameras to observe the survival activities and population changes of dwarf rock sheep and small-clawed otters, understand the impact of project construction on wildlife, and provide scientific basis for protection measures and completion acceptance." Huadian Jinshangsu Lu Bo, deputy director of the safety and environmental protection department of the Walong branch, said that in addition, they also set up drinking water and salt licking points for the dwarf rock sheep in the reservoir area. With the increase in water area, the habitat and activity space of aquatic organisms and fish have also increased, which promotes the population development of a variety of amphibians."
During the construction of hydropower stations, vegetation protection also runs through.
According to Lu Bo, the construction of the Suwalong Hydropower Station Suitable Botanical Garden was completed in March this year. The garden is currently conducting research on plateau vegetation restoration projects and conducting vegetation restoration tests in batches to demonstrate the suitability of species in the Suwalong construction area. To find the best varieties for vegetation restoration.
It is understood that during the construction of the Sichuan-Tibet section of the cascade power station in the upper reaches of the Jinsha River, researches on the protection and restoration of key species of terrestrial organisms have been successively carried out, and studies on suitable species of plants and vegetation restoration experiments have been completed in the high-cold and high-altitude dry valleys. "Restore the recommended plant list" and strive to maintain a balance between large-scale infrastructure construction and ecological environment protection in Tibet-related areas.
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