CN217580027U - Upper reservoir arrangement structure of pumped storage power station - Google Patents

Abstract

The utility model relates to a reservoir arrangement structure on pumped storage power station belongs to hydroelectric engineering technical field. The utility model discloses a locate first manger plate dam in the river course, upstream side at first manger plate dam is provided with the second manger plate dam, by first manger plate dam, second manger plate dam and both sides massif enclose to keep off and form the upper reservoir, at the pre-buried sluicing culvert pipe that has in the bottom of upper reservoir, the sluicing culvert pipe is for the level to the culvert pipe or the pipe of falling siphon, the water inlet setting of sluicing culvert pipe is in the upstream side river course of second manger plate dam, the delivery port setting of sluicing culvert pipe is in the downstream side river course of first manger plate dam. The elevation of the first retaining dam and the elevation of the second retaining dam can be designed according to the actual storage capacity requirement. If buildings such as important villages exist, the first retaining dam and the second retaining dam can be located at the downstream of the important villages. The utility model discloses satisfying under the prerequisite of the required storage capacity of engineering electricity generation, can avoiding important village to be flooded, reduce and move the people and settle the investment.

Description

Upper reservoir arrangement structure of pumped storage power station

Technical Field

The utility model relates to a reservoir arrangement structure on pumped storage power station belongs to hydroelectric engineering technical field.

Background

With the large-scale development of new energy such as wind power, photovoltaic and the like, a novel power system taking the new energy as a main body is gradually constructed, and the demand on a flexible power supply is more urgent. The pumped storage power station has the functions of peak regulation, frequency modulation and the like, can ensure the safety of a power system, and promotes the large-scale development and consumption of system energy.

Pumped storage power stations generally include upper and lower reservoirs, water delivery systems, power plants, and the like. The upper reservoir and the lower reservoir generally need the storage capacity of about several million or thousands of cubic meters, the operation of the power station is divided into a water pumping working condition and a power generation working condition, redundant power is pumped by a reversible water pumping and power generation dual-purpose unit in the power utilization valley, the water in the lower reservoir is pumped to the upper reservoir, and the water is discharged to generate power in the power utilization peak. When the pumped storage power station is arranged, the pumped storage power station is often influenced by factors such as topographic and geological conditions, environmental protection, immigration and the like. For example, when selecting an upper reservoir, natural gully terrain is generally used to build a dam at a proper position, and water is retained by mountains around a basin, so that sufficient effective storage capacity is formed. However, when important villages are upstream of the dam site planned by the reservoir, if the damming water is enough to form effective reservoir capacity, the important villages can be submerged due to high water level of the damming water; if the water level of the water retaining wall is lower than that of the important village, the water retaining wall may not have enough effective storage capacity.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that: the upper reservoir arrangement structure of the pumped storage power station can not submerge important villages in the upstream and can ensure enough effective storage capacity.

For solving the technical problem the utility model discloses the technical scheme who adopts is: reservoir arrangement structure on pumped storage power station, including locating the first manger plate dam in the river course, be provided with the second manger plate dam in the upstream side of first manger plate dam, enclose the fender by first manger plate dam, second manger plate dam and both sides mountain and form the upper reservoir, pre-buried the sluicing culvert pipe in the bottom of upper reservoir, the sluicing culvert pipe is the level to culvert pipe or inverted siphon culvert pipe, the water inlet setting of sluicing culvert pipe is in the upstream side river course of second manger plate dam, the delivery port setting of sluicing culvert pipe is in the downstream side river course of first manger plate dam.

Further, the method comprises the following steps: the first retaining dam and the second retaining dam have the same top elevation.

Further, the method comprises the following steps: the bottom of the water inlet of the water drainage culvert pipe is provided with a sand blocking bank.

Further, the method comprises the following steps: a trash rack is arranged in the water inlet of the water drainage culvert pipe.

Further, the method comprises the following steps: the water inlet of the water drainage culvert pipe is arranged in the concrete structure platform, an earth and stone backfilling structure layer is arranged in a region between the concrete structure platform and the upstream side of the second retaining dam, concrete panels of an integral structure are arranged at the top of the earth and stone backfilling structure layer, the upstream and downstream upstream facing surfaces of the second retaining dam and the top surface of the second retaining dam, and the concrete panels are connected with the concrete structure platform into a whole.

Further, the method comprises the following steps: the bottom of the water outlet of the water drainage culvert pipe is provided with a stone block bottom protection structure.

Further, the method comprises the following steps: and an earth and rock backfilling toe guard structure is arranged at the top of the water outlet of the water drainage culvert in the area close to the downstream dam face of the first retaining dam.

Further, the method comprises the following steps: the upper reservoir is built in a semi-digging and semi-filling mode, and the water drain culvert pipe is an inverted siphon culvert pipe.

The utility model has the advantages that: the method is characterized in that a natural gully topography is utilized, two retaining dams are built at proper positions, an upper reservoir is formed by utilizing the upstream retaining dam and the downstream retaining dam as well as the retaining of mountains at the left bank and the right bank, and the elevations of the first retaining dam and the second retaining dam can be designed according to the actual storage capacity requirement. If buildings such as important villages exist, the first water retaining dam and the second water retaining dam are located at the downstream of the important villages. The excessive water volume in the upstream river can be directly discharged to the downstream through the pre-buried drainage culvert, and the safety of important villages in the upstream is ensured. The utility model discloses satisfying under the prerequisite of the required storage capacity of engineering electricity generation, can avoiding important village to be flooded, reduce and move the people and settle the investment.

Drawings

Fig. 1 is a schematic plan view of the present invention.

Fig. 2 is a schematic elevation view of the present invention.

Fig. 3 is the detailed structure diagram of the water inlet of the water drainage culvert pipe of the utility model.

The labels in the figure are: 1-upper reservoir, 2-important village, 3-water drainage culvert pipe, 31-water inlet, 32-water outlet, 4-first retaining dam, 5-second retaining dam, 6-sand blocking bank, 7-trash rack, 8-concrete structure platform, 9-earth-rock backfill structure layer, 10-concrete panel, 11-block-rock bottom protection structure, 12-earth-rock backfill foot protection structure and 13-original ground line.

Detailed Description

For the purpose of facilitating understanding and practicing the invention, preferred embodiments of the invention are further described with reference to the accompanying drawings.

As shown in fig. 1 to 3, the utility model discloses a locate first manger plate dam 4 in the river course, upstream side at first manger plate dam 4 is provided with second manger plate dam 5, by first manger plate dam 4, second manger plate dam 5 and both sides massif enclose to keep off and form reservoir 1, it has outlet culvert pipe 3 to pre-buried in the bottom of reservoir 1, outlet culvert pipe 3 is the level to culvert pipe or inverted siphon culvert pipe, outlet 31 of outlet culvert pipe 3 sets up in the upstream side river course of second manger plate dam 5, outlet 32 of outlet culvert pipe 3 sets up in the downstream side river course of first manger plate dam 4. In specific implementation, the drainage culvert 3 can be buried in the dam body, but the space between the earth and rockfill dam and the buried pipe needs to be treated, and preferably, the drainage culvert 3 is buried after a trench is dug in the natural ground. Because the general elevation of upper reservoir 1 is higher, and its collection rain area is less, and the flood that produces is general can not be too big, adopts the culvert pipe can satisfy sluicing flood control flow requirement. The highest upstream water level should be lower than the important villages 2, and the water level can be ensured to meet the requirement by adjusting the number of the drainage culverts 3, and the drainage culverts are preferably designed to be arranged in a plurality of rows. The elevation of the dam is designed according to the actual storage capacity requirement, in order to fully play the water storage function of the dam, the elevations of the tops of the first retaining dam 4 and the second retaining dam 5 are the same, the elevation of the top of the dam is higher than the normal water storage level of the reservoir (the normal water storage level of the reservoir + the safe superelevation = the elevation of the top of the dam), and the upstream surface of the retaining dam can be impervious by adopting a concrete panel 10 so as to ensure the structure safety. Assuming that buildings such as the important village 2 exist, the utility model discloses during the implementation, as long as ensure that the position of first manger plate dam 4 and second manger plate dam 5 all is located important village 2 low reaches can. The utility model discloses under the prerequisite condition that satisfies the required storage capacity of engineering electricity generation, can avoid important village 2 to be flooded, reduce and move the people and settle the investment.

Considering the earth and stone excavation and filling balance, the upper reservoir 1 is preferably constructed by adopting a half excavation and half filling mode, so that the bottom of the reservoir is partially excavated, and in this case, the water drainage culvert pipe 3 is an inverted siphon culvert pipe. Of course, if the dam is not excavated, the dam is directly built into the reservoir, namely, the reservoir bottom is embedded with the horizontal culvert pipe instead of the inverted siphon culvert pipe, and the scheme is also applicable.

In order to reduce the risk of blocking the downcomer 3 by silt deposits, a sand weir 6 is preferably provided at the bottom of the inlet 31 of the downcomer 3. The upstream rain collecting area is small, the flood is small, the silt problem is not outstanding, and the top elevation of the sand blocking ridge 6 is higher than the original ground line 13 by a certain distance, so that a certain silt storage capacity can be ensured.

In order to reduce the risk of blocking the drainage culvert 3 by sundries, a trash rack 7 is arranged in the water inlet 31 of the drainage culvert 3. It can be understood that the sand bars 6 and the trash racks 7 can be used in combination to achieve a better anti-clogging effect.

The top elevation of the water inlet 31 should generally be higher than the highest upstream water level to ensure that the water inlet 31 does not turn over. Preferably, the water inlet 31 of the drainage culvert pipe 3 is arranged in the concrete structure platform 8, the soil and stone backfilling structure layer 9 is arranged in the area between the concrete structure platform 8 and the upstream side of the second dam 5, the top of the soil and stone backfilling structure layer 9, the upstream and downstream upstream water-facing surfaces of the second dam 5 and the top surface of the second dam 5 are provided with concrete panels 10 of an integral structure, and the concrete panels 10 are connected with the concrete structure platform 8 into a whole. Therefore, even if over-standard flood occurs, the flood can enter the upper reservoir 1 by turning over the dam, the dam body cannot be damaged by the flood after the concrete is hardened, and then the water entering the upper reservoir is discharged through the water transmission and power generation system, so that the engineering safety is ensured.

In order to prevent the washout damage, the bottom of the water outlet 32 of the water drainage culvert pipe 3 is provided with a stone protecting bottom structure 11. In order to further improve the structural reliability of the water outlet 32, the earth-rock backfill foot protection structure 12 is arranged at the top of the water outlet 32 of the water drainage culvert pipe 3 in the area close to the downstream dam face of the first retaining dam 4.

Claims (8)

1. Reservoir arrangement structure on pumped storage power station, including first manger plate dam (4) of locating in the river course, its characterized in that: be provided with second retaining dam (5) in the upper reaches side of first retaining dam (4), enclose the fender by first retaining dam (4), second retaining dam (5) and both sides massif and form upper reservoir (1), pre-buried drain culvert pipe (3) in the bottom of upper reservoir (1), drain culvert pipe (3) are the level to culvert pipe or inverted siphon culvert pipe, water inlet (31) of drain culvert pipe (3) set up in the upper reaches side river course of second retaining dam (5), delivery port (32) of drain culvert pipe (3) set up in the downstream side river course of first retaining dam (4).

2. The pumped-storage power station upper reservoir arrangement of claim 1, wherein: the first retaining dam (4) and the second retaining dam (5) have the same top elevation.

3. The pumped-storage power station upper reservoir arrangement of claim 1, wherein: a sand blocking ridge (6) is arranged at the bottom of the water inlet (31) of the water drainage culvert pipe (3).

4. The pumped-storage power station upper reservoir arrangement of claim 1, wherein: a trash rack (7) is arranged in a water inlet (31) of the water drainage culvert pipe (3).

5. The pumped-storage power station upper reservoir arrangement of claim 1, wherein: a water inlet (31) of the water drainage culvert pipe (3) is arranged in a concrete structure platform (8), an earth-rock backfill structure layer (9) is arranged in a region between the concrete structure platform (8) and the upstream side of the second retaining dam (5), concrete panels (10) of an integral structure are arranged on the top of the earth-rock backfill structure layer (9), the upstream and downstream upstream water-facing surfaces of the second retaining dam (5) and the top surface of the second retaining dam (5), and the concrete panels (10) are connected with the concrete structure platform (8) into a whole.

6. The pumped-storage power station upper reservoir arrangement of claim 1, wherein: the bottom of the water outlet (32) of the water drainage culvert pipe (3) is provided with a stone protecting bottom structure (11).

7. The pumped-storage power station upper reservoir arrangement of claim 1, wherein: and an earth and rock backfill foot protection structure (12) is arranged at the top of the water outlet (32) of the water drainage culvert pipe (3) in an area close to the downstream dam surface of the first retaining dam (4).

8. The pumped-storage power station upper reservoir arrangement of any of claims 1 to 7, characterized in that: the upper reservoir (1) is built in a half-digging and half-filling mode, and the water drainage culvert pipe (3) is an inverted siphon culvert pipe.

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