Develop ten-day river water resources to promote the economic development of Zhen' an?

Chaiping Reservoir Power Station is the best dam site in the cascade development of Xunhe River. The construction of Chaiping Reservoir Power Station is not only a pillar industry to develop the economy of Zhen 'an County, but also a leading enterprise to develop the economy of poor areas in the west of the county. This paper discusses the feasibility and necessity of building the power station in detail, which will promote the construction of the project as soon as possible.

1 Foreword

Xunhe River is located in the west of Zhen 'an County, and it is the largest first-class tributary on the north bank of the Han River. The main stream of the river is rich in hydropower resources, which have not been developed and utilized for a long time. Known as "four hundred miles of rivers do not water the fields". With the strengthening of China's western development, Zhen 'an was approved by the State Council as the fourth batch of rural electrification counties after the first batch of primary electrification counties in China passed the acceptance test. It is imperative to develop ten-day river water resources. According to the results of the General Survey of Water Resources of the People's Republic of China Volume 22 Shaanxi Province published in September, 1979, the water resources of Xunhe River can be developed in six steps, with a total installed capacity of 184.8MW. There are two in Zhen 'an County, and Chaiping Reservoir Power Station is one of them. The project is located in the middle and lower reaches of Xunhe River, in a standard V-shaped valley, with superior topography and geological conditions at the dam site. The dam height and storage capacity are large, and it has good adjustability. It is the most ideal dam site in the cascade development of Xunhe River. The investigation of the reservoir area in the early stage of this project has been completed, and the preliminary design has been issued. Now the project is being approved by the State Planning Commission, and construction is about to start.

2 general situation of river basin

2.1 general situation of hydrometeorology of river basin

The main stream of Xunhe River basin is 216km long, with a basin area of 63km2. The main stream in Zhen 'an County is 74.4km long, with a basin area of 244km2. The average annual runoff is 968Mm3. The annual precipitation is (75-95) mm. The elevation of the sea level is at.

2.2 overview of reservoir power station

The reservoir is a multifunctional water control project integrating power generation, water supply, aquaculture, tourism and ecological protection, which is 12km away from Xi 'an and along the planned Xi 'an-Chongqing expressway. The dam site is 5km away from Zhen 'an County and 15km below Chaiping Street. Xunhe River originates from ningshan county on the southern slope of Qinling Mountain, flows through Ningshan, Zhen 'an and Xunyang counties, and flows into the Han River in the east of Xunyang County. The designed dam height of the reservoir is 152m, and the storage capacity is 8.5×18m3. It is a dam-back power station with a designed installed capacity of 96MW(4×24MW) and a reservoir water surface of 18ha. The dead storage capacity of power generation is 6.58×18m3. According to the data of Chaiping Hydrological Station for 2 years, the sand content of river water for many years is 1.1kg/m3, and the historically measured maximum flow is 275 m3/s. The backwater length of the reservoir is 52km.

3 Necessity of building Chaiping Reservoir Power Station

3.1 Make full use of the water resources of Xunhe River

We can make full use of the rich water resources of Xunhe River, turning waste into treasure and harm into benefit. Because Xunhe River is located in a heavy precipitation area, the main feature of Xunhe River is its sudden rise and fall, and flood disasters are frequent. Because the riverbed of the river is generally lower than the farmland on both sides of the river, since the 197s, the local people have built many water diversion projects in Chaiping, Chongjiagou and Huangjiawan on both sides of the river, all of which were scrapped because of the changeable riverbed. At present, there is no water conservancy project in the main stream section of Zhen 'an County. Building dikes and reservoirs can make full use of its hydraulic resources, promote benefits and eliminate pests, and benefit mankind.

3.2 flood control and disaster reduction

flood control and disaster reduction ensure the safety of one party. Building a reservoir to intercept water can reduce the flood peak of the Yangtze River in flood season, reduce the pressure of flood on the downstream, and play a positive role in flood control and disaster reduction in important cities along the downstream coast. In the submerged line of the reservoir area, the residents will be moved back to safety, and the threat of flood disasters to the lives and property of local people will be completely eliminated.

3.3 Construction of Chaiping Power Station

The construction of this power station is the need of the economic development of Zhen 'an and Shangluo area for the increasing demand for electricity. In 2, there were 143 hydropower stations in operation in this county, with an installed capacity of 12.9MW, but all of them are radial hydropower stations, which have no regulating capacity and are seriously short of electricity in dry season, which has become the bottleneck of industrial and agricultural production in this county. It has seriously restricted the development of local economy. Because most of these hydropower stations were built in the early 197s, 8% of them have been aged, and their output has been seriously reduced, resulting in insufficient self-supplied electricity. The county's electricity load is increasing at a rate of 1% every year, and the contradiction between power supply and demand is very prominent. It is predicted that the maximum load in Shangluo area in 21 is 416MW, and the peak-valley difference of the system is 116MW, and the installed operation can account for 82.5% of the peak-shaving capacity of the system. Therefore, it is very necessary to build Chaiping regulating power station.

building chaiping power station is the need for Zhen' an county to get rid of poverty and become rich and well-off. With the development of the county's economy and the increase of its population, the contradiction of the county's fiscal revenue has become more and more prominent. In addition, the main financial resources of the county are several large-scale mineral enterprises, whose mineral resources have dried up in recent years, and their output has dropped sharply. The county government is under great pressure to ensure wages and meals. Chaiping Hydropower Station makes full use of the stable and cheap reclaimed water resources of Xunhe River, and generates annual income of more than 1×18 yuan for the county. It is 25 times of the county's fiscal revenue in 2. It can also create more than 2, jobs. Therefore, it is very necessary to build this project.

Building this reservoir power station is an effective way to implement the South-to-North Water Transfer Project in Shaanxi Province and solve the serious water shortage in Xi 'an. In the design year, water can be delivered to Xi 'an for 5Mm3. The annual water fee income is 5×18 yuan, with considerable economic and social benefits.

The construction of this reservoir power station is the need for Zhen 'an County to realize rural electrification. The rural electrification county of Zhen 'an County has been approved by the state, and the electricity consumption will reach 13455MW·h after 25, while in 2, the electricity consumption of the whole county was 45,85 MW h. The self-supplied electricity consumption in that year was 2635MW·h, accounting for 57.5% of the total electricity consumption, and the fed electricity consumption was 195MW·h, accounting for 42.5% of the electricity consumption in that year. In 2, the installed capacity of hydropower in the county was 12.9MW, and it will reach 112MW in 25, with a difference of 99.1MW. After the completion of Chaiping Power Station, the installed capacity basically reached the rural electrification standard. It can not only improve the self-supply rate of electricity in this county, but also undertake the task of peak regulation of electricity in Shangluo area.

4 Feasibility of building Chaiping Reservoir Power Station

4.1 Excellent dam site conditions

Excellent dam site conditions and good geological and topographic conditions are the main conditions for the operability of this project. The geology of the dam site is good, and the whole dam site is good. The rocks are dolomitic limestone, and the rocks are exposed. The mountains on both sides of the reservoir area are tall and strong, and there is no low dam, no permanent leakage and no large collapse terrain on the rocky slope. The width of the estuary is only 8m, showing a "V" shape, which fully meets the geological conditions for building a high dam. It has passed the geological exploration and design demonstration of Northwest Hydropower Design Institute.

4.2 The control basin area is large

The dam site has a large control basin area, and the water resources are 968Mm3. In addition to meeting the water demand for power generation, it can also supply 5Mm3 of water to Xi 'an every year, and the water fee income is 5×18 yuan, which has considerable economic benefits.

4.3 the compensation for demolition is small

the compensation for demolition is small. This project is a water conservancy project with the least inundation loss and the least resettlement population in the current construction of reservoir power stations in China. The cultivated land was flooded for 166ha, and the migration population was only 245. Among them, there are more than 1,4 farmers, who are fully qualified to be resettled on the spot. The resettlement compensation is about 3,7× 14 yuan, accounting for .7% of the total investment of 5.2×18 yuan.

4.4 local materials

the main building materials used in the construction of this project are available locally. Stone and sand can be taken nearby. Not only the reserves are large, but also the quality is good and the mining is easy. Can greatly save investment. Wood can be purchased from nearby Muwang Forest Farm. The transportation distance is only 4km, and the high-quality and large-reserve timber can fully meet the engineering needs. Steel can be transported from Xi 'an to Zhen 'an Railway Station by Xikang Railway and to the construction site by 5km special highway. The transportation distance is only 19km. The quality of Xiushan brand ordinary portland cement in Zhen 'an County is qualified and its output is high, which can meet the engineering needs. Sufficient local building materials are the main factor for the low unit cost of the project (unit kilowatt cost is 46 yuan /kW).

4.5 High economic benefits

Higher economic benefits are achieved with lower investment. The total installed capacity of the power station is 96MW, the guaranteed output is 14MW, and the average annual power generation is 23 GW h. The cost is 4,6 yuan /kW, and the annual output value can reach 1,6× 14 yuan according to the on-grid electricity price of .25 yuan/kw h. The South-to-North Water Transfer Project supplies 5Mm3 of water to Xi 'an every year, and the annual water fee income is 5×18 yuan. Together with other income such as tourism, it can create profits and taxes of nearly 1 million yuan a year. Therefore, the economic benefit of building Chaiping Power Station is very considerable, and it is a new financial resource cultivation point in Zhen 'an County. It is also a key project to develop water resources in poor areas in the west of Zhen 'an.

5 Suggestions

1) Strengthen water and soil protection in the upper reaches of the reservoir according to law. At present, the vegetation in the upper reaches of the reservoir is good. However, illegal mining in some towns and villages has been repeatedly prohibited, and local vegetation damage is serious, which is unfavorable to the safe operation of reservoirs, so management should be strengthened according to law.

2) the demonstration plan should be made for the new location of the township organs that need to be relocated. Chaiping Town and Miaogou Township, which need to be relocated in the reservoir area, have large housing construction, large investment and long construction time.

it should be tilted in terms of capital and technology. Early planning, early construction and early relocation. Ensure that the reservoir will be impounded as scheduled.

for more information about the engineering/service/procurement bidding, and to improve the winning rate, you can click on the bottom of official website Customer Service for free consultation:/#/? source=bdzd