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The water conservancy project of Songhua River Basin
2018-05-16  |   Editor : houguangbing  
Category : Technology
  1. Fengman reservoir

The Fengman reservoir is a large water conservancy hub in the middle reaches of the second Songhua River, which is mainly used for power generation, with comprehensive utilization of flood control, irrigation, industrial and agricultural and urban water supply, shipping, aquaculture and tourism. It is located at the second Songhua River of 24 kilometers southeast from the city of Jilin. The power station is composed of concrete gravity dam, back dam workshop and drainage Hongdong.

The project consists of a concrete gravity dam, an overflow dam, a workshop behind the dam, a flood discharge cavity on the left bank and a three phase power plant, which is a multi-year regulating reservoir. According to the 500 year flood design, the dam is verified by a flood of 10000 years, the height of the dam is 267.7 meters, the dam is 91.7 meters high, the length of the dam is 1080 meters, and the total storage capacity is 10 billion 988 million cubic meters. Xing Li storage capacity of 6 billion 164 million cubic meters, dead storage capacity of 2 billion 685 million cubic meters. The control basin area is 42 thousand and 500 square kilometers, accounting for 57.9% of the second Songhua River basin area. It is the next level of Baishan, Hongshi and Fengman cascade development. Construction started in 1937. It is the first large-scale hydropower station built in Northeast China.

  1. Nierji Water conservancy hub

A large hydro junction on the Nenjiang main stream. The right bank of the dam is Nierji Town, the Inner Mongolia Autonomous Region's molidawal Autonomous Banner, and the left bank are two grams of shallow Township in Nehe City, Heilongjiang province. It is 130 kilometers from the lower reaches of Qiqihar, Heilongjiang province. It is a large control project, which is based on flood control, industrial and agricultural water supply, combined with power generation, shipping and water environment, and creates conditions for the optimal allocation of water resources in the Songliao basin.

The project started in June 2001 and completed in 2006 at the end of 12 in 2006. The hub control catchment area is 66 thousand and 400 square kilometers, with a total capacity of 8 billion 611 million cubic meters, with comprehensive benefits such as flood control, industrial and agricultural water supply, power generation, shipping and water resources protection. The water level of the reservoir is 219.9 meters, the normal water level is 216 meters, the dead water level is 195 meters, the flood control high water level is 218.15 meters, the limit water level of the flood season is 213.37 meters, and the corresponding storage capacity is 5 billion 220 million cubic meters. The Nierji water control project is mainly composed of main dams, auxiliary dams, spillways, powerhouse and irrigation water conveyance tunnels (pipes). The main building is grade I, and the intensity of earthquake fortification is seventh degree. The total length of the dam is 7265.55 meters, the maximum dam height is 40.55 meters, and the height of the dam top is 221 meters. The normal use of flood standard is once in a thousand years (15000 cubic meters per second), and the flood standard is the most probable flood (24900 cubic meters per second). After the completion of the project, the flood control safety of the lower reaches of Harbin, Qiqihar and Daqing can be improved through the reservoir adjustment and storage. The flood control standards for the Qi Fu embankment in Qiqihar and Daqing areas can be raised from 50 years to 100 years. The flood control standard of Neil to Qiqihar along the banks of the river is 20 years. In the case of 50 years, the flood control standard of Nenjiang main stream dyke below Qiqihar has been raised from 35 years to 50 years. At the same time, the task of cutting peak in the lower reaches of Harbin in the flood period has become an important part of the flood control project system of Nenjiang and Songhua River.

  1. Baishan reservoir

Baishan reservoir is a large water control project in the second Songhua River with comprehensive benefits of flood control, shipping and fish raising. The first hub of the second Songhua River main stream has been developed, which is 39 kilometers and 250 kilometers from the red stone and the plump dam site respectively. It is located at the junction of Huadian and Jingyu two counties in the eastern mountainous area of Jilin province. Started in October 1958, suspended construction in June 1962, resumed work in 1975, completed in June 1992, and was appraised as a national excellent project.

The Baishan reservoir is composed of dams, flood discharge structures, first stage underground powerhouses, two phase ground buildings and switchgear stations. The dam is designed according to the 500 year flood, and the flood is checked in 5000 years, and the dam is checked according to the probable maximum flood. After the regulation of the reservoir, the maximum discharge volume is 13750 cubic meters per second, and the total reservoir capacity is 6 billion 215 million cubic meters. The Baishan reservoir dam is a three core concrete gravity arch dam, with a small radius of 320 meters in the middle, 770 meters on both sides and a length of 676.5 meters on the top of the dam. The width of the dam is 16 meters, the width of the high hole dam is 18 meters (24 meters wide), the maximum height of the dam is 149.5 meters, the width of the dam is 9~12 meters, the height of the dam is 423.5 meters, and the maximum width of the dam is 63.7 meters.

  1. Lianhua reservoir

A large reservoir in the lower reaches of Mudanjiang, which combines power generation with flood protection, irrigation, shipping and fish farming. The dam site is located in Mulan village, Three River Township, Hailin County, Heilongjiang Province, about 130 km away from Mudanjiang city. It was started in November 1992 and completed in December 1998.

Lianhua reservoir is mainly composed of dams (including dams and two dams), spillways and water diversion and power generation systems. The dam is a reinforced concrete face rockfill dam, the highest dam is 71.8 meters high, the height of the dam is 225.8 meters, the length of the dam top is 902 meters, the width of the dam top is 8 meters, and the slope of the upper and lower reaches of the dam is 1:1.4. The two dam is a clay core wall gravel dam, which is located at the low pass of the left bank. The maximum dam height is 64 meters, the height of the dam is 226 meters, the top of the dam is 270 meters long, the dam top is 8 meters wide, the slope of the upper and lower reaches of the dam is 1:2 and 1:2.25. The spillway is located at the low watershed on the right bank. It is a spillway of open bank slope. It consists of water diversion channel, overflow weir, slots, flow nose sill and outlet canal, with a total length of 650.5 meters. The top elevation of the overflow weir is 205.6 meters, and the arc gate with 7 holes width 16 meters and 13.4 meters high is set. The discharge flow rate is 12210 cubic meters per second when the flood level is 220.58 meters, and the discharge of the flood water level is 18570 cubic meters per second when the flood water level is checked for 225.41 meters. The water level of the reservoir is 225.41 meters, the design flood level is 220.58 meters, the normal water level is 218 meters, the dead water level is 203 meters, the total reservoir capacity is 4 billion 180 million cubic meters, the effective storage capacity is 2 billion 720 million cubic meters, the flood control capacity is 1 billion 164 million cubic meters, which is not the complete regulation of the river type reservoir for many years. The construction of the dam and flood discharge building is designed according to the 500 year flood return period.

  1. Lake Jingpo reservoir

A large reservoir in the upper and middle reaches of Mudanjiang lies 70 kilometers southwest of Ning'an City, Heilongjiang province. It is a large scale water control project mainly based on power generation, and has comprehensive benefits such as irrigation, urban water supply and tourism.

The water catchment area of the reservoir is 11 thousand and 800 square kilometers, accounting for 31% of the Mudanjiang River Basin, with an average annual runoff of 3 billion 138 million cubic meters and an average of 100 cubic meters per second for years. The total storage capacity is 1 billion 824 million cubic meters, of which: the natural lake capacity is 1 billion 124 million cubic meters, and the embankment and dam above the rock platform increase the capacity of 700 million cubic meters, which is not fully adjusted for many years. The design flood standard is 100 years, and the flood standard is checked in 1000. The two hydropower stations have the largest generating capacity of about 60 meters, and the total installed capacity is 96 MW, and the average generating capacity is 320 million kwh for many years. The reservoir hub construction is mainly composed of dams, diversion systems and power plants. The dam consists of gravity concrete dams, Overflow Dams and reinforced concrete cover earth rock mixed Overflow Dams, with a total length of 2753 meters. The height of the top of the retaining dam is 355.30 meters, the height of the dam is 8.30 meters, the height of the top of the overflow dam is 353.50 meters, and the maximum height of the dam is 2.50 meters. The maximum discharge of the spillway is 6100 cubic meters per second.

  1. Shitoukoumen reservoir

The Shitoukoumen reservoir is located in the middle reaches of the Yinma river. The dam is located 500 meters northwest of Shitoukoumen Village, Shitoukoumen village, West Ying Town, Jiutai, Jilin Province, 30 kilometers north from Jiutai and 35 kilometers west to Changchun city. It is a large-scale water conservancy project which combines flood control, waterlogging and urban water supply with comprehensive utilization of irrigation, power generation and fish culture.

The water collecting area of the Shitoukoumen reservoir is 4944 square kilometers, and its total storage capacity is 1 billion 277 million cubic meters, of which 378 million cubic meters of Xingli reservoir capacity. The flood control standard is designed for 500 years flood once every ten years. The reservoir key project consists of four parts: earth dam, spillway, water conveyance tunnel and power station. The earth dam is a silty clay homogeneous dam with the dam length of 445 meters and a maximum height of 21.5 meters. The spillway is a bank side, located at the right end of the dam, with a three hole sluice and a maximum discharge of 1839 cubic meters per second; the water tunnel is at the foot of the left end of the earth dam for a 4 hole reinforced concrete square culvert, the maximum flow capacity is 92 cubic meters per second, and the 1 hole in the East irrigation area. Irrigation, No. 2 hole for flood discharge irrigation, 3 and 4 for power generation, irrigation and auxiliary flood discharge; the power station is equipped with 2 0.8 megawatts of water turbine generator sets, using irrigation water and water waste seasonal power generation, the design of the annual average power generation capacity of 4 million 200 thousand kwh. After the completion of the reservoir, the 28 thousand hectare cultivated land along the two sides of the lower reaches will meet the flood control standard of 50 to 100 years.

  1. Chaersen reservoir

The large reservoir in the upper reaches of the Tao Er river is located in the territory of the Horqin Right Wing Front Banner in the Inner Mongolia Autonomous Region, and its dam site is 32 kilometers away from Ulan Hot. It is a large-scale water control project mainly based on irrigation and flood control, combined with power generation, fish farming and tourism.

The length of the river at the site of the Chaersen reservoir is 220 km long, and the area of the river is controlled by 7780 square kilometers, with an average annual flow of 26.3 cubic meters per second, an average annual runoff of 830 million cubic meters, and an average of 148 thousand tons of sand for years. The reservoir is designed according to the 500 year flood and 10000 years flood check. Check the flood water level of 367.61 meters, the corresponding total capacity of 1 billion 253 million cubic meters, the normal water level of 365.40 meters, the corresponding capacity of 1 billion 67 million cubic meters, dead water level of 342 meters, the corresponding capacity of 34 million cubic meters. It is a large reservoir mainly composed of flood prevention and irrigation, combined with power generation, fish farming and other comprehensive utilization. The main works of the reservoir consist of earth dam, spillway, water conveyance tunnel and hydropower station. The earth dam is a sandy clay shell dam with loam core wall. The height of the dam top is 371.2 meters, the top of the dam is 6 meters wide, the top of the dam is 1712 meters, and the largest dam is 39.7 meters high. The upstream slope of the dam is dry stone slope protection, and the downstream slope is protected by stone pebble. After the construction of the Chaersen reservoir, the flood peak was cut through 311 million cubic meters of flood control capacity. The flood control capacity of the Tao Er River dyke was raised to 50 year flood standard, which directly protected six flags of the lower reaches of the Inner Mongolia Autonomous Region and Jilin Province, 142 thousand hectares of farmland in counties and cities, 324 thousand hectares of grassland and 929 natural cities in 4 towns. The life and property of the 2 million population and the safety of 4 railways and 3 highways.

  1. Moon Lake water reservoir

The Moon Lake reservoir is a large plain reservoir at the end of the Tao Er River and on the side of Nenjiang. It can not only save the flood of Tao Er River, but also lead to the flood of Nenjiang. It is located at the junction of Da'an and Zhenlai two cities (counties) in Baicheng, Jilin. The Moon Lake reservoir was built in April 1974 and put into operation in August 1976. After the construction of the Treasury, it was called the moon pond in 1999 and changed its name to the Moon Lake water storehouse in 2000. It is a large water control project for comprehensive utilization of flood control, irrigation and fish raising.

The total storage capacity of the Moon Lake water storehouse is 1 billion 199 million cubic meters. The catchment area above Tao Er river is 33 thousand and 100 square kilometers. The average annual runoff is 1 billion 550 million cubic meters. The reservoir project is based on the 50 year experience of Tao Er River, the 20 year flood combination design in Nenjiang, and the combined flood check in 50 years in Tao Er River and Nenjiang. Xingli water level is 131 meters, corresponding storage capacity is 484 million cubic meters, with an area of 204 square kilometers. It is mainly composed of earth dam, storage sluice and irrigation canal head. The dam is a homogeneous earth dam with a total length of 42 km, consisting of 1 Main dams and 6 sub dams. The first dam is the main dam and the rest are auxiliary dams. The dam is 9.57 meters high and the dam top is 8 meters wide. In the two 3+300 dam, there are 6 holes, the Ha Jin reservoir sluice, the total length is 56.4 meters, and the maximum discharge volume is 910 cubic meters per second. The designed irrigation area is 25 thousand hectares, with an annual output of 3 million 700 thousand kg of commercial fish.

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