Luhun reservoir

Luhun reservoir includes Hubin county The scenic area, with the cultural and natural landscape of Hun reservoir as the center, includes Hubin County, Liangcheng hometown, Yiyin hometown and other tourist areas. The scenic area, with the cultural and natural landscape as a whole, is characterized by water entertainment, with 50000 mu of lake surface rippling and complete water entertainment projects. It is known as the "Red Bay of Central Plains" in the south of Luoyang, and is the best scenic area in Central Plains Water park.

Luhun reservoir

Luhun reservoir is located on the Yihe River, the second tributary of the Yellow River, 67 kilometers away from Luoyang City, with a controlled drainage area of 3492 square kilometers, accounting for 57.9% of the area of the Yihe River Basin. The average annual runoff at the dam site is 1.025 billion cubic meters (1951-1968), the average annual runoff is 32.5 cubic meters per second, the average annual sediment discharge is about 3 million tons, and the average sediment concentration is 3.2 kg / m3. More than 90% of the sediment is concentrated in the flood season from July to October, and the river water is clear in the non flood season. The peak discharge of 1000 year return period is 12400 cubic meters per second, that of 10000 year return period is 17100 cubic meters per second, and that of dam protection flood (10000 year return period plus 20%) is 20520 cubic meters per second. Luhun reservoir is a large I type reservoir, one of the five large reservoirs in Luoyang, and its capacity in Henan is second only to Xiaolangdi Reservoir and Yahekou Reservoir.

Traffic information

It's 19 yuan to take the bus from Luoyang to Song County at Jinyuan bus station to the west of Luoyang station. Then get off at z001 Road near the reservoir.

Play items

If you like fishing, it's good to be here. There are many silver carp and bighead carp in the reservoir, and they are clean.

Introduction to scenic spots

Luhun reservoir is located in Song County of Luoyang City in the middle reaches of Yihe River in the Yellow River Basin. It was built in the 1960s by the state. It is a large reservoir mainly for flood control. After the completion of the reservoir, it plays an important role in flood control, power generation, irrigation and aquaculture. However, because the resettlement of Luhun reservoir was carried out during the three-year natural disaster period and the cultural revolution period, affected by the planned economic system and the idea of "one big and two gongs" at that time, there was no scientific planning for the resettlement. After several times of relocation, especially under the support of the idea of homeland, the method of falsely reporting the cultivated land and retaining more people was adopted, which should be relocated but not relocated, blindly relying on it later, resulting in more people and less land, It has caused a lot of left over problems, among which the return migration is one of the more prominent problems. Over the years, governments at all levels have taken a lot of measures and invested special funds to solve the production and living difficulties of migrant people. However, due to a variety of reasons, it has not been well solved, which has been left to this day.

The average depth is 9.50M, and the maximum depth is 20.00m

Morphological description

Luhun reservoir (Henan) is the Yellow River system, with an area of 46800 mu, an average depth of 9.50 m, a maximum depth of 20.00 m and a transparency of 121 cm.

Sediment: silt.

Ecological characteristics, primary productivity and related indicators

In the Yellow River system, Luhun reservoir system and water area, the daily primary yield is 4.50 g oxygen / m2. Daily primary yield is 3159 kg / m2. Annual fish yield is 1.5 kg / m2. Annual f / P 0.05, biomass is 57.9 g / m2, daily P / b 0.47, total nitrogen is 3.25 mg / L, inorganic nitrogen is 0.761 mg / L, total phosphorus is 0.13 mg / L, phosphate is 0.28 mg / L, organic oxygen consumption is 3.35 mg / L, The transparency is 121 cm

plankton

(mg / L)

The yield of floating planting is 4.500, the standing crop is 5.790, the dominant species is diatom, and the zooplankton is 3.340

Seasonal variation of phytoplankton biomass and Dominant Algae (mg / L)

From 1981 to 1982, the spring biomass was 0.84, the spring biomass was 2.05, the summer biomass was 6.66, the autumn biomass was 2.05, the autumn biomass was 6.66, the autumn biomass was 2.05, the autumn biomass was 6.66, the autumn biomass was 2.05, the autumn biomass was 6.66, the autumn biomass was 6.66, the summer biomass was 2.05, the autumn biomass was 6.66,

Phytoplankton biomass (mg / L) and its composition in the reservoir

The floating biomass was 5.790, among which diatom accounted for 76.6%, Chlorophyta 4.0%, Chrysophyta 0.4%, dinoflagellate 15.3%, Euglenophyta 2.1% and Cyanophyta 1.6%

Zooplankton biomass and seasonal variation (mg / L)

The primary biomass was 0.01, rotifer biomass was 1.48, Cladocera biomass was 0.84, copepod biomass was 1.01 and total biomass was 3.34

Nutrition type

Plant yield: rich, plant biomass: rich, plant dominant species: medium, inorganic nitrogen: rich, total nitrogen: rich, inorganic phosphorus: medium, total phosphorus: rich, cod: medium, the water quality is eutrophic.

Density and biomass of benthos (g / m2) (density / biomass)

Water area name, survey date: 81-82, benthos: 14, annelids: 3125 / 0.721, snails: (1.5 / 0.018), mussels: none, crustaceans: 1 / 0.106, Chironomidae larvae: 1075 / 0.625, other aquatic insects: 1075 / 0.625, others: 77.5 / 0.0425, total: 500 / 1.507, total average: 250 / 0.754.

Reservoir task

The task of the reservoir is flood control, irrigation, power generation and water supply. The dam is 55 meters high and has a total storage capacity of 1.32 billion cubic meters. The main structures of the reservoir include the barrage (clay inclined wall sand shell dam), water conveyance tunnel, spillway tunnel, irrigation power generation tunnel, spillway and power station (the installed capacity of water conveyance tunnel power station is 3 sets, with a unit capacity of 1250KW; the installed capacity of irrigation tunnel power station is 3 sets, with a unit capacity of 3000kW, a unit capacity of 3200kW and a unit capacity of 500kW). The total installed capacity of the power station is 1045 kW. The flood level elevation of the reservoir is 327.5m (Yellow Sea elevation system) and 331.8m respectively, the normal high water level elevation is 319.5m, and the dam crest elevation is 333M.

Project introduction

The project was started in December 1959 and completed at the end of August 1965. The irrigation power tunnel was added in February 1972 and completed in July 1974. The dam protection and reinforcement project of the reservoir was started in 1976 and completed in 1988. A total of 7.056 million cubic meters of earthwork and 148600 cubic meters of concrete were completed. The total investment of the project is 168 million yuan.

The dam site is located in the exit Canyon section of Songxian basin. The canyon is 500 meters long, the upstream basin of the canyon is 3-4 kilometers wide, and the riverbed at the dam site is 320 meters wide. There are four terraces in the Yihe River Valley and two terraces are missing in the upper valley. The exposed strata in the dam site area are Sinian volcanic rocks, Tertiary red rocks and Quaternary sediments from old to new. Sinian volcanic rocks are cut off westward by fault f2-f3 at the left dam abutment. The width of the vertical riverbed is 100-200m. The lithology is mainly andesite porphyrite, followed by basaltic porphyrite and diabase porphyrite. The Tertiary red rock stratum, exposed at the foot of the downstream slope of the dam, is red coarse sandy loam, intercalated with conglomerate cemented by clayey soil. It is semi diagenetic, hard, and contains more quartz coarse sand grains. The exposed thickness is 10-12m, and the total thickness of the rock is about 100m. Quaternary sediments include old Quaternary glacial gravel, middle quaternary alluvial gravel and red clay, new quaternary gravel and red clay, and modern alluvium. The old Quaternary glacial sand gravel is exposed at the left dam abutment, connecting with the fracture zone of f2-f3 fault in the East, and extending far to the West. The exposed thickness is 25m, and the total thickness is 40m. The middle quaternary alluvial gravel layer is covered by Sinian volcanic rocks at the bottom of the fourth terrace, with a thickness of 1.8-3.5 meters. The red clay is covered by sand gravel, with a thickness of 25-35 meters, forming the fourth terrace. The neoquaternary sand gravel is the bottom layer of the third terrace, and the red clay covers the sand gravel with a thickness of 15-25m, forming the third terrace. The modern alluvium is distributed in the first terrace and river bed, which is alluvial loam and gravel layer, about 27 meters thick, of which the gravel layer is 12 meters thick. There are 112 large and small faults in the dam site area, most of them are horizontal thrust faults, and a few are reverse faults. The larger faults are f2-f3, strike ne 75o-85o, dip NW 70O, fault distance more than 300m, fault width 10-100m, located at the left dam abutment. F4 strike is 328o NW, incline to SW, dip angle is 60o, fault width is 5-7m, located in the left abutment gully. F5 strike is 60o ne, incline to northwest, dip angle is 70O, intercepting channel is 40m wide, it is a large fault along the river, located in the dam foundation. F12 strike is 70O ne, incline to northwest, dip angle is 70O ~ 80O, fault width is 12M, it is located under the foundation of spillway tunnel inlet and outlet tower. In addition, there are three neotectonic faults in the Quaternary strata, numbered F1, F2 and F3. F1 and F2 are reactivated along the f2-f3 fault with a fault distance of 0.5-2m. F 1 is located in the fracture zone of F 2-F 3 fault, which dislocates the Quaternary gravel layer and upper loess layer

Chinese PinYin : Lu Hun Shui Ku