Ecological management method of drawdown zone of pumped storage power station reservoir

Abstract

The application provides an ecological management method for a drawdown zone of a pumped storage power station reservoir, and the method comprises the following steps: obtaining water level data of the reservoir, exposure time of each elevation, and sunshine time range; determining the drawdown zone range according to the water level data; and performing zoning management on the drawdown zone according to the water level data, the exposure time of each elevation in the drawdown zone range, and the sunshine time range, wherein the zone comprises an engineering measure management area, an ecological management protection area, and a vegetation recovery buffer area. Therefore, by accurately dividing the management areas of the drawdown zone of the pumped storage power station and configuring different management measures for different areas, the ecological management problem of the drawdown zone area can be fundamentally solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ecological management, and in particular to an ecological management method for a drawdown zone of a pumped storage power station reservoir. BACKGROUND

[0002] After the construction of a hydropower station, a large area of water level fluctuation zone, i.e. a drawdown zone of a reservoir, will be formed in the reservoir area due to the influence of water storage, power generation and flood discharge. The drawdown zone is a variable area subjected to periodic submergence and exposure of water level, and is influenced by the interaction of terrestrial and aquatic ecosystems, which will cause a series of ecological and environmental problems such as plant community succession, bank slope stability, pollutant migration and soil erosion.

[0003] At present, the related drawdown zone management methods are only applicable to conventional hydropower stations, but not to pumped storage power stations. The operation and dispatching of pumped storage power stations show daily variation characteristics, which are different from the annual variation characteristics of conventional hydropower stations. The drawdown zone of a pumped storage power station has the characteristics of fast water level fluctuation and high frequency due to the periodic operation of the power station, which will have a significant impact on vegetation restoration, soil erosion prevention and control, and bank slope stability in the drawdown zone. Therefore, the management of the drawdown zone of a pumped storage power station has become a problem to be solved. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the related art. To this end, the present application provides an ecological management method for a drawdown zone of a pumped storage power station reservoir to solve the problem of management of the drawdown zone of a pumped storage power station.

[0005] The present application provides an ecological management method for a drawdown zone of a pumped storage power station reservoir, comprising:

[0006] obtaining water level data of the reservoir, exposure time of each elevation and sunshine time range;

[0007] determining a drawdown zone range according to the water level data;

[0008] determining an engineering measure management area, an ecological management protection area and a vegetation restoration buffer area according to the water level data, the exposure time of each elevation in the drawdown zone range and the sunshine time range, and outputting management measures corresponding to the engineering measure management area, the ecological management protection area and the vegetation restoration buffer area.

[0009] In some possible implementations, the water level data includes a highest water level and a lowest water level of the reservoir, and the determining of the drawdown zone range according to the water level data comprises determining the drawdown zone range according to the highest water level and the lowest water level.

[0010] In some possible implementation manners, the determining the engineering measure management area, the ecological management protection area and the vegetation recovery buffer area according to the water level data, the exposure time of each elevation in the drawdown zone and the sunshine time range comprises: determining a target elevation according to the exposure time of each elevation and the sunshine time range, the target elevation being the lowest elevation at which the exposure time is within the sunshine time range; determining the engineering measure management area according to the elevation corresponding to the lowest water level and the target elevation; determining the ecological management protection area according to the elevation corresponding to the highest water level and the target elevation; and determining the vegetation recovery buffer area according to the elevation corresponding to the highest water level.

[0011] In some possible implementation manners, the determining the ecological management protection area according to the elevation corresponding to the highest water level and the target elevation comprises: obtaining a slope corresponding to each elevation between the elevation corresponding to the highest water level and the target elevation; and determining, in a case where the slope corresponding to each elevation is less than a preset threshold, that the ecological management protection area is between the elevation corresponding to the highest water level and the target elevation.

[0012] In some possible implementation manners, the method further comprises: determining, in a case where the slope corresponding to each elevation is greater than or equal to the preset threshold, that the engineering measure management area is between the elevation corresponding to the highest water level and the target elevation.

[0013] The application further provides an ecological management method and system for a drawdown zone of a pumped storage power station reservoir, comprising: an acquisition module configured to acquire water level data of the reservoir, exposure time of each elevation and a sunshine time range; a drawdown zone determination module configured to determine a drawdown zone range according to the water level data; and an area division module configured to determine an engineering measure management area, an ecological management protection area and a vegetation recovery buffer area according to the water level data, the exposure time of each elevation in the drawdown zone range and the sunshine time range, and output management measures corresponding to the engineering measure management area, the ecological management protection area and the vegetation recovery buffer area.

[0014] In some possible implementation manners, the water level data comprises a highest water level and a lowest water level of the reservoir, and the drawdown zone determination module is specifically configured to determine the drawdown zone range according to the highest water level and the lowest water level.

[0015] The application further provides an electronic device comprising a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor implements the ecological management method for the drawdown zone of the pumped storage power station reservoir when executing the program.

[0016] The application further provides a non-transitory computer-readable storage medium, which has stored thereon a computer program, and the computer program is executed by a processor to implement the ecological management method of the drawdown zone of the pumped storage power station reservoir.

[0017] The application further provides a computer program product, which comprises a computer program, and the computer program is executed by a processor to implement the ecological management method of the drawdown zone of the pumped storage power station reservoir.

[0018] The ecological management method of the drawdown zone of the pumped storage power station reservoir provided by the application considers the daily scheduling characteristics of the water level of the pumped storage power station, precisely divides the management areas of the drawdown zone of the pumped storage power station, and configures different management measures for different areas, so that the drawdown zone of the pumped storage power station is managed. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0020] Figure 1 is one of the flowcharts of the ecological management method of the drawdown zone of the pumped storage power station reservoir according to an embodiment of the application;

[0021] Figure 2 is the second flowchart of the ecological management method of the drawdown zone of the pumped storage power station reservoir according to an embodiment of the application;

[0022] Figure 3 is the third flowchart of the ecological management method of the drawdown zone of the pumped storage power station reservoir according to an embodiment of the application;

[0023] Figure 4 is a water level change diagram of one specific example of the application;

[0024] Figure 5 is a diagram of the duration of stay and the duration of submergence of one specific example of the application;

[0025] Figure 6 is a diagram of the relationship between the slope and the area of the drawdown zone of one specific example of the application;

[0026] Figure 7 is a water level fluctuation zone partition management and layout diagram of one specific example of the present application;

[0027] Figure 8 is a block diagram of an ecological management system of a water level fluctuation zone of a pumped storage power station reservoir of an embodiment of the present application;

[0028] Figure 9 is a structural schematic diagram of an electronic device provided by the present application. DETAILED DESCRIPTION

[0029] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0030] A water level fluctuation zone (also known as a water level fluctuation zone, a water level fluctuation zone, etc.) is a special area of land that is periodically submerged or exposed to water due to seasonal water level fluctuations in rivers, lakes and reservoirs, and belongs to the category of wetlands.

[0031] Generally, the water level fluctuation zone of a conventional reservoir is periodically submerged or exposed to water in units of years. For example, the Three Gorges Reservoir adopts a winter storage and summer discharge scheduling mode, with a water level fluctuation range of 30 m. In the 145 m to 150 m elevation range, the water level fluctuation zone has an area of 55.83 km 2 , in the 150 m to 160 m elevation range, the water level fluctuation zone has an area of 108.93 km 2 , in the 160 m to 170 m elevation range, the water level fluctuation zone has an area of 119.03 km 2 , and in the 170 m to 175 m elevation range, the water level fluctuation zone has an area of 65.13 km 2 . Between October of each year and April of the next year, the water level is maintained at an elevation of about 175 m, and from March to September, the water level is maintained at a low water level: an elevation of 145 m. The duration of the water level at the lowest water level (145 m) and the highest water level (175 m) is significantly higher than that at other water levels. As can be seen, this type of reservoir has fewer water level changes and smaller water level change ranges.

[0032] Compared with the conventional reservoir, the operation and scheduling of pumped storage power station shows the characteristics of daily variation, and the drawdown zone area has the characteristics of fast water level fluctuation, high frequency and so on due to the periodic operation of the power station, therefore, the drawdown zone management scheme for the conventional reservoir is not applicable to the drawdown zone management of the pumped storage power station. At present, the management of the drawdown zone of the pumped storage power station mainly includes engineering measures, plant measures, engineering measures + plant measures and the like, the engineering measures include reinforced concrete panel slope protection, mortar stone slope protection, skeleton slope protection (skeleton filled with impermeable cohesive compacted soil or dry stone) and the like, the engineering measures can improve the protection standard of the drawdown zone, but the investment is large and lacks ecological landscape. The plant measures include planting of flood-tolerant plants, submerged plants and the like, but due to the wave impact and scouring effect of water level fluctuation and the difficulty of forming stable plant community for the flood-tolerant plants, the plant survival rate is low and the slope protection effect is poor. The combination of engineering measures and plant measures is the main measure for the management of the drawdown zone at present, mainly including the implementation of frame beams on the slope (planting plants in the frame beams), six rib bricks (planting plants in the bricks), plastic steel sheet piles (planting plants after land preparation on the inner side of the sheet piles) and the like, the above measures do not consider the daily scheduling operation characteristics of the pumped storage power station and the time and space variation characteristics of the drawdown zone area, and the measure arrangement only relies on experience, and the single measure is not applicable to the management of the drawdown zone of the pumped storage power station.

[0033] Therefore, the embodiment of the present application provides an ecological management method for the drawdown zone of the pumped storage power station reservoir, which considers the daily scheduling characteristics of the water level of the pumped storage power station and realizes the accurate management of the drawdown zone area of the pumped storage power station.

[0034] Figure 1 is a flow chart of the ecological management method for the drawdown zone of the pumped storage power station reservoir according to the embodiment of the present application. As shown in Figure 1 the ecological management method for the drawdown zone of the pumped storage power station reservoir can include the following steps:

[0035] Step 110: obtaining the water level data of the reservoir, the exposure time of each elevation and the sunshine time range.

[0036] First of all, it should be pointed out that the water level data of the reservoir can be the daily water level change data of the pumped storage reservoir, in addition, the exposure time of each elevation refers to the time when the drawdown zone position of each elevation is exposed to the water surface.

[0037] Specifically, a water level monitoring device can be arranged in the pumped storage reservoir to monitor the water level change of the reservoir in real time and record the daily water level change data, and the water level change data of the reservoir can be stored for subsequent retrieval and use. In this embodiment, the water level monitoring device can be a float type water level gauge, a pressure type water level gauge, an electronic water gauge, a radar water level gauge, a gas or liquid ultrasonic water level gauge and the like, and the water level monitoring device is not limited specifically here.

[0038] It can be understood that the pumped storage power station reservoir fluctuates by day frequency, is affected by reservoir scheduling, and the residence time and exposure time of the water level of the pumped storage power station reservoir at different elevations are different, and the residence time, sunshine time range and exposure time of the water level at each elevation of the drawdown zone are key factors for implementing vegetation ecological restoration in the drawdown zone area.

[0039] When the water level change of the reservoir is monitored in real time by the water level monitoring device, not only water level change data can be obtained, but also residence time and exposure time at different elevations can be analyzed according to the water level change data. As an example, the real-time observation of the reservoir can record the water level residence time at an interval of 1m of the water level elevation change, and the drawdown zone exposure time at the elevation above the current water level.

[0040] In this embodiment, the sunshine time range refers to the time period of the sun shining on the ground within a day, here, the sunshine time range does not consider the influence of ground objects, cloud cover and the like shielding, and can directly take the time period between the sun from the eastern horizon to the western horizon. Specifically, the sunrise and sunset time of the pumped storage power station area can be determined according to historical statistical data, and the time period between the sunrise and sunset time is taken as the sunshine time range.

[0041] Step 120: determining the drawdown zone range according to the water level data.

[0042] It can be understood that the water level data of the reservoir can reflect the position of the area of the reservoir frequently submerged by water, and therefore the range of the drawdown zone of the reservoir can be determined according to the water level data. In some embodiments, the water level data includes the highest water level and the lowest water level of the reservoir, and the way of determining the drawdown zone range according to the water level data can be: determining the drawdown zone range according to the highest water level and the lowest water level.

[0043] The pumped storage power station usually starts to use the excess power of the power grid to pump the water in the lower reservoir to the upper reservoir at the low electricity consumption valley (such as at night), which can be referred to as "low valley pumping electricity consumption", at this time, the water level of the upper reservoir starts to gradually rise, and the energy storage mode is started. When it is daytime (morning period), that is, at the peak of electricity consumption, the pumped storage power station starts the power generation mode, and the water level of the upper reservoir starts to gradually decrease. As can be seen, the water level of the pumped storage power station reservoir reaches the highest water level at night every day, reaches the lowest water level during the day every day, and the water level is always in a cyclic change process. In addition, affected by the operation scheduling of the pumped storage power station, the highest water level and the lowest water level have certain differences between days, months and years.

[0044] Therefore, in the embodiment, considering a whole growth season of the plant, the highest water level and the lowest water level in the year can be determined through the water level data of the whole year, and then the range of the drawdown zone of the reservoir can be determined according to the highest water level and the lowest water level.

[0045] As an example, if it is determined according to the water level data of the whole year that the highest water level of the reservoir is 710 m and the lowest water level of the reservoir is 640 m, the region with the elevation from 640 m to 710 m can be taken as the range of the drawdown zone. Thus, the boundary range of the drawdown zone can be determined.

[0046] Step 130: determining the engineering measure management area, the ecological management and protection area and the vegetation recovery buffer area of the drawdown zone according to the water level data, the exposure time of each elevation in the drawdown zone and the sunshine time range, and outputting the management measures corresponding to the engineering measure management area, the ecological management and protection area and the vegetation recovery buffer area.

[0047] After the range of the drawdown zone of the pumped storage power station reservoir is determined, further, it can be determined according to the water level data, the exposure time of each elevation in the drawdown zone and the sunshine time range which ranges of the drawdown zone can accept light in the daytime and which ranges cannot accept light, and then the drawdown zone is divided into three areas: the engineering measure management area, the ecological management and protection area and the vegetation recovery buffer area.

[0048] It should be noted that the management measures configured by the engineering measure management area, the ecological management and protection area and the vegetation recovery buffer area are different. The engineering measure management area can be an area where the drawdown zone is managed only by engineering measures, the ecological management and protection area can be an area where the drawdown zone is managed by engineering measures and plant measures, and the vegetation recovery buffer area can be an area where the drawdown zone is managed only by plant measures. It is worth mentioning that the vegetation recovery buffer area is mainly used for filtering silt, pesticides and the like, so as to achieve the management of the drawdown zone.

[0049] Figure 2 is a flowchart of the ecological management method of the drawdown zone of the pumped storage power station reservoir according to the embodiment of the present application. As shown in Figure 2 in some embodiments, the step 130 of determining the engineering measure management area, the ecological management and protection area and the vegetation recovery buffer area according to the water level data, the exposure time of each elevation in the drawdown zone and the sunshine time range can include the following steps:

[0050] Step 210: determining a target elevation according to the exposure time and the sunshine time range of each elevation, the target elevation being the lowest elevation with the exposure time in the sunshine time range.

[0051] Step 220: determining the engineering measure management area according to the elevation corresponding to the lowest water level and the target elevation.

[0052] Step 230: determining the ecological management and protection area according to the highest water level corresponding height and the target height.

[0053] Step 240: determining the vegetation recovery buffer area according to the highest water level corresponding height.

[0054] In the embodiment, first, the heights corresponding to the drawdown zone area that can accept sunlight are determined according to the exposure time of each height, specifically, by comparing the exposure time of each height with the sunshine time range, the heights whose exposure time is within the sunshine time range are determined; then the lowest height is screened from the heights, and the lowest height is taken as the target height.

[0055] After the target height is determined, the area between the lowest water level corresponding height and the target height is taken as the engineering measure management area, the area between the target height and the highest water level corresponding height is taken as the ecological management and protection area, and the area above the highest water level corresponding height within a certain range is taken as the vegetation recovery buffer area.

[0056] Among them, the engineering measure management area cannot accept sunlight and does not have the natural conditions for vegetation recovery, and at the same time, in order to ensure the stability of the drawdown zone slope, the engineering measure management area adopts engineering management measures to manage the drawdown zone. For example, the grid beam slope protection measure can be implemented in the engineering measure management area, and dry masonry or impermeable cohesive compacted soil can be filled in the grid to further ensure the slope protection strength.

[0057] The ecological protection area can accept sufficient sunlight, can provide water, soil and light conditions for plant growth, and is suitable for ecological restoration. In addition, in order to ensure the slope protection strength, the ecological protection area can adopt the combination of engineering measures and plant measures to jointly manage the drawdown zone. For example, the six-rib brick ecological slope can be implemented in the ecological protection area, and the six-rib brick is planted with flood-tolerant herbaceous plants such as dog tooth grass and vetiver grass.

[0058] In the embodiment, the drawdown zone within the range of 0m to 4m below the target height can also be included in the ecological management and protection area, and submerged plants are planted in this area to maximize the ecological management of the drawdown zone.

[0059] The vegetation recovery buffer area is in the water-land transition zone, the soil moisture condition is good, and it is suitable for vegetation recovery, so the vegetation community system of arbor, shrub and grass can be established in the vegetation recovery buffer area to further improve the ecological landscape effect of the reservoir periphery.

[0060] Figure 3 is a flow chart three of the ecological management method of the pumped storage power station reservoir drawdown zone of the embodiment of the present application. As Figure 3As shown, in some embodiments, determining the ecological management and protection area according to the elevation corresponding to the highest water level and the first elevation in step 230 can include the following steps:

[0061] Step 310: Obtain the slope corresponding to each elevation between the elevation corresponding to the highest water level and the first elevation.

[0062] Step 320: In the case where the slope corresponding to each elevation is less than a preset threshold, determine the drawdown zone between the elevation corresponding to the highest water level and the first elevation as the ecological management and protection area.

[0063] It should be noted that the preset threshold can be set as the maximum slope value that can be planted, or can be set artificially according to the actual needs of the staff, which is not limited here.

[0064] In the process of determining the ecological management and protection area, the slope of the drawdown zone can also be considered. If the slope of the drawdown zone is large, even if the area can receive sunlight, it cannot be planted. Specifically, the slope corresponding to each elevation of the slope between the elevation corresponding to the highest water level and the first elevation can be obtained first. After obtaining the slope of each elevation of the slope, it is determined whether the slope of each elevation of the slope is less than a preset threshold. If the slope of each elevation of the slope is less than the preset threshold, it indicates that the drawdown zone between the elevation corresponding to the highest water level and the first elevation can be planted, and can be used as the ecological management and protection area.

[0065] In some embodiments, the ecological management method of the reservoir drawdown zone further includes: in the case where the slope corresponding to each elevation is greater than or equal to a preset threshold, determining the drawdown zone between the elevation corresponding to the highest water level and the first elevation as an engineering measure management area.

[0066] Specifically, after obtaining the slope of each elevation of the slope, it is determined whether the slope of each elevation of the slope is greater than or equal to a preset threshold. If the slope of each elevation of the slope is greater than or equal to the preset threshold, it indicates that the drawdown zone between the elevation corresponding to the highest water level and the first elevation cannot be planted, and therefore this area can be used as an engineering measure management area.

[0067] It is worth mentioning that by obtaining the slope of each elevation slope, the area of the engineering measure management area, the ecological management protection area and the vegetation recovery buffer area can be calculated according to the slope of each elevation slope. Specifically, the size and form of the drawdown zone are affected by the slope, and the correlation between the slope and the area is also obvious. For example, if the slope is smaller, the area of the drawdown zone may be larger. In order to further determine the slope distribution of each elevation section of the drawdown zone and effectively layout the management measures, the drawdown zone can be segmented according to 5m or 10m elevation interval, and the slope tool of ArcGIS software is used to convert the drawdown zone from elevation to slope, so as to obtain the slope of each elevation slope, and then the area of the engineering measure management area, the ecological management protection area and the vegetation recovery buffer area can be obtained.

[0068] For the convenience of understanding, the ecological management method of the reservoir drawdown zone according to the embodiment of the present application will be described in detail below through a specific example.

[0069] Firstly, the water level of the reservoir of a certain pumped storage power station is monitored in real time by the water level monitoring device, the water level data of the reservoir is obtained, and the water level data is analyzed. Figure 4 is a water level change diagram of a specific example of the present application. From Figure 4 It can be seen that the water level of the reservoir presents daily cyclic fluctuation, and the daily water level change law is basically similar, similar to a sine function curve. Due to the influence of power station operation dispatching grid load, the maximum and minimum values of water level between single days are slightly different, and the shutdown working condition is also a main factor affecting the water level fluctuation.

[0070] Therefore, the lowest water level and the highest water level of the reservoir in a year can be selected to determine the range of the reservoir drawdown zone. If the water level data of the whole year is determined, the lowest water level in the whole year appears in September, the water level elevation is 685m, and the highest water level appears in August, which is 715m. Therefore, the drawdown zone elevation range caused by water level fluctuation is determined as 685m to 715m, that is, the drawdown zone range is between elevations 685m and 715m.

[0071] After the range of the drawdown zone of the reservoir is determined, the water level of the drawdown zone of the reservoir is continuously observed for 24 hours, the water level elevation presents dynamic continuous change, and the water level elevation change is recorded at an interval of 1m. When calculating the residence time of each elevation water level, the value between two continuous water levels is calculated as the low water level value, for example, the 710.3m water level elevation is located between 710m and 711m, and is calculated as the 710m water level elevation. The residence time of each water level elevation includes two processes, the water level rising process during pumping and the water level falling process during power generation. In a single day, each water level elevation appears twice, and the residence duration of each water level elevation is the sum of the two residence processes. For example, Figure 5As shown, the duration of each water level elevation has no obvious regularity, and presents an irregular change process of increasing and decreasing alternately. The maximum water level duration appears at the water level elevation of 705 m, with a duration of 285 minutes, mainly due to the shutdown working condition for 255 minutes at this water level elevation. The minimum duration is at 708 m, with a duration of 70 minutes. The durations at the highest water level (712 m) and the lowest water level (702 m) are 205 minutes and 150 minutes, respectively. The average duration at each water level elevation is 131 minutes. The water level submergence time decreases with the increase of water level elevation. The submergence time of low water level is the longest, and the submergence time of high water level is the shortest. According to the observation records of water level, the exposure time of each elevation can be obtained.

[0072] After determining the scope of the drawdown zone, the slope of the drawdown zone can also be measured. Specifically, the drawdown zone in the elevation range of 685 m to 715 m is divided into three sections, i.e., a low section with an elevation range of 685 m to 695 m, a middle section with an elevation range of 695 m to 705 m, and a high section with an elevation range of 705 m to 715 m. The slope of the drawdown zone is divided into 18 levels at intervals of 5°. The relationship between the slope and the area of the drawdown zone is established for different elevation ranges. As shown in the following table, Figure 6 As shown, the area of the drawdown zone increases first, reaches a maximum value, and then gradually decreases with the increase of the slope. The maximum area of the drawdown zone at the low section and the middle section is between 15° and 20°, and the maximum area of the drawdown zone at the high section is between 25° and 30°. Among them, the maximum area of the drawdown zone at the middle section is 5.27 m 2 , followed by the high section, with an area of 5.02 m 2 , and the minimum is the low section, with an area of 4.06 m 2 . At the same time, the area of the drawdown zone is mainly concentrated in the slope range of 0° to 45°. Through statistical analysis, the area of the drawdown zone at the low section, the middle section and the high section in the slope range of 0° to 45° accounts for 90%, 86% and 80% of the total area, respectively, which indicates that gentle slope and moderate slope have a significant impact on the distribution of the area of the drawdown zone.

[0073] Further, the engineering measure management area, ecological management and protection area, and vegetation restoration buffer area of the drawdown zone can be determined according to the water level data, the exposure time of each elevation in the drawdown zone, and the sunshine time range. In this example, if the target elevation 705 m is determined according to the exposure time of each elevation and the sunshine time range, i.e., the elevation above 705 m is determined as the area that can receive light. Therefore, the range of 701 m to 715 m can be determined as the ecological management and protection area of the drawdown zone. The range of 701 m to 705 m is suitable for planting submersible and flood-tolerant plants, and the range of 705 m to 715 m implements six-rib brick ecological slope protection, and the six-rib brick is planted with flood-tolerant herbaceous plants, such as centipede grass and vetiver.

[0074] 685m to 701m elevation segment cannot receive sunlight for a long time, and does not have plant restoration conditions, so that 685m to 701m between can be used as an engineering measure management area. At the same time, in order to ensure the stability of the slope of the drawdown zone, the grid beam slope protection measures (grid filling dry masonry or impermeable cohesive compacted soil) are implemented in the region, and the slope protection strength is further ensured.

[0075] In addition, the 715m to 725m elevation range can be used as a vegetation restoration buffer zone. The soil moisture condition of the vegetation restoration buffer zone is good, and is suitable for vegetation restoration. A vegetation community system combining trees, shrubs and grasses can be established in the region to further improve the ecological landscape effect of the reservoir periphery. The specific measures can be referred to the management measure layout diagram shown in Figure 7 .

[0076] Therefore, in view of the uniqueness of the water level change of the drawdown zone of the pumped storage power station reservoir, the exposure time, the sunlight time range and the slope of each elevation of the drawdown zone are comprehensively considered to design the ecological management scheme for the drawdown zone of the pumped storage power station. Through the zoning management mode and the measure layout, the water and soil loss and the collapse disaster of the drawdown zone are effectively controlled, the ecological restoration effect of the drawdown zone is improved, and the ecological environment of the reservoir is greatly improved.

[0077] Figure 8 is a block diagram of the ecological management system of the drawdown zone of the pumped storage power station reservoir according to an embodiment of the present application.

[0078] As shown in Figure 8 , the ecological management system 800 of the drawdown zone of the pumped storage power station reservoir can include:

[0079] The acquisition module 810 is configured to acquire water level data of the reservoir, exposure time of each elevation and sunlight time range.

[0080] The drawdown zone determination module 820 is configured to determine the drawdown zone range according to the water level data.

[0081] The region division module 830 is configured to determine the engineering measure management area, the ecological management protection area and the vegetation restoration buffer zone according to the water level data, the exposure time of each elevation in the drawdown zone range and the sunlight time range, and output the management measures corresponding to the engineering measure management area, the ecological management protection area and the vegetation restoration buffer zone.

[0082] Thus, the water level data of the reservoir, the exposure time of each elevation and the sunshine time range are acquired by the acquisition module 810; the drawdown zone determination module 820 determines the drawdown zone range of the reservoir according to the water level data; finally, the region division module 830 determines the engineering measure management area, the ecological management protection area and the vegetation recovery buffer area according to the water level data, the exposure time of each elevation in the drawdown zone range and the sunshine time range, so as to consider the daily scheduling characteristics of the water level of the pumped storage power station, and realize the management of the drawdown zone area of the pumped storage power station.

[0083] In some embodiments, the water level data includes the highest water level and the lowest water level of the reservoir, and the drawdown zone determination module is specifically configured to determine the drawdown zone range according to the highest water level and the lowest water level.

[0084] It should be noted that the details of the pumped storage power station reservoir drawdown zone ecological management system not disclosed in the present embodiment are referred to the details disclosed in the embodiments of the pumped storage power station reservoir drawdown zone ecological management method in the present specification, which will not be repeated here.

[0085] Figure 9 An example of a schematic diagram of the physical structure of an electronic device is shown in Figure 9 As shown, the electronic device can include a processor 910, a communications interface 920, a memory 930 and a communications bus 940, wherein the processor 910, the communications interface 920 and the memory 930 complete mutual communication through the communications bus 940. The processor 910 can invoke the logical instructions in the memory 930 to execute the ecological management method of the pumped storage power station reservoir drawdown zone, which includes: acquiring the water level data of the reservoir, the exposure time of each elevation and the sunshine time range; determining the drawdown zone range according to the water level data; determining the engineering measure management area, the ecological management protection area and the vegetation recovery buffer area according to the water level data, the exposure time of each elevation in the drawdown zone range and the sunshine time range, and outputting the management measures corresponding to the engineering measure management area, the ecological management protection area and the vegetation recovery buffer area.

[0086] In addition, the logic instructions in the memory 930 described above can be implemented in the form of a software function unit and sold or used as an independent product, which can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various media that can store program codes.

[0087] In another aspect, the present application also provides a computer program product, which comprises a computer program, the computer program can be stored on a non-transitory computer readable storage medium, and the computer program can be executed by a processor to enable a computer to execute the ecological management method of the drawdown zone of a pumped storage power station reservoir provided by the above-mentioned methods, the method comprising: obtaining water level data of the reservoir, exposure time of each elevation, and sunshine time range; determining the drawdown zone range according to the water level data; determining the engineering measure management area, the ecological management protection area and the vegetation recovery buffer area according to the water level data, the exposure time of each elevation in the drawdown zone range and the sunshine time range, and outputting the corresponding management measures of the engineering measure management area, the ecological management protection area and the vegetation recovery buffer area.

[0088] In another aspect, the present application also provides a computer program product, which comprises a computer program, the computer program can be stored on a non-transitory computer readable storage medium, and the computer program can be executed by a processor to enable a computer to execute the ecological management method of the drawdown zone of a pumped storage power station reservoir provided by the above-mentioned methods, the method comprising: obtaining water level data of the reservoir, exposure time of each elevation, and sunshine time range; determining the drawdown zone range according to the water level data; determining the engineering measure management area, the ecological management protection area and the vegetation recovery buffer area according to the water level data, the exposure time of each elevation in the drawdown zone range and the sunshine time range, and outputting the corresponding management measures of the engineering measure management area, the ecological management protection area and the vegetation recovery buffer area.

[0089] The device embodiments described above are merely illustrative, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed to multiple network units. Part or all of the modules can be selected to achieve the purposes of the embodiments according to actual needs. Those skilled in the art can understand and implement without creative labor.

[0090] Through the description of the above embodiments, those skilled in the art can clearly understand that the embodiments can be realized by means of software and the necessary general hardware platform, and of course can also be realized by hardware. Based on such understanding, the above technical solutions can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute the methods described in each embodiment or some parts of the embodiments.

[0091] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An ecological management method for the drawdown zone of a pumped storage power station reservoir, characterized in that, The method comprises the following steps: obtaining water level data of a reservoir, exposure time of each elevation, and sunshine time range; determining a drawdown zone range according to the water level data; determining an engineering measure management area, an ecological management protection area, and a vegetation recovery buffer area according to the water level data, the exposure time of each elevation in the drawdown zone range, and the sunshine time range, and outputting management measures corresponding to the engineering measure management area, the ecological management protection area, and the vegetation recovery buffer area; wherein, the determination of the engineering measure management area, the ecological management protection area, and the vegetation recovery buffer area according to the water level data, the exposure time of each elevation in the drawdown zone range, and the sunshine time range comprises: determining a target elevation according to the exposure time of each elevation and the sunshine time range, the target elevation being the lowest elevation at which the exposure time is within the sunshine time range; determining the engineering measure management area according to the elevation corresponding to the lowest water level and the target elevation; determining the ecological management protection area according to the elevation corresponding to the highest water level and the target elevation; determining the vegetation recovery buffer area according to the elevation corresponding to the highest water level; the management measure corresponding to the engineering measure management area is to use only engineering measures to manage the drawdown zone; the management measure corresponding to the ecological management protection area is to use engineering measures and plant measures to manage the drawdown zone; and the management measure corresponding to the vegetation recovery buffer area is to use only plant measures to manage the drawdown zone.

2. The ecological management method of the drawdown zone of a pumped storage power station reservoir according to claim 1, characterized in that, The water level data comprises a highest water level and a lowest water level of the reservoir, and the determination of the drawdown zone range according to the water level data comprises: determining the drawdown zone range according to the highest water level and the lowest water level.

3. The ecological management method of the drawdown zone of a pumped storage power station reservoir according to claim 1, characterized in that, The determination of the ecological management protection area according to the elevation corresponding to the highest water level and the target elevation comprises: obtaining a slope corresponding to each elevation between the elevation corresponding to the highest water level and the target elevation; in a case where the slope corresponding to each elevation is less than a preset threshold, determining that the area between the elevation corresponding to the highest water level and the target elevation is the ecological management protection area.

4. The ecological management method of the drawdown zone of a pumped storage power station reservoir according to claim 3, characterized in that, The method further comprises: in a case where the slope corresponding to each elevation is greater than or equal to the preset threshold, determining that the area between the elevation corresponding to the highest water level and the target elevation is the engineering measure management area.

5. An ecological management system for the drawdown zone of a pumped storage power station reservoir, characterized in that, The method comprises the following steps: an obtaining module, configured to obtain water level data of a reservoir, exposure time of each elevation, and sunshine time range; a drawdown zone determining module, configured to determine a drawdown zone range according to the water level data; an area dividing module, configured to determine an engineering measure management area, an ecological management protection area, and a vegetation recovery buffer area according to the water level data, the exposure time of each elevation in the drawdown zone range, and the sunshine time range, and output management measures corresponding to the engineering measure management area, the ecological management protection area, and the vegetation recovery buffer area; wherein, the area dividing module is configured to determine the engineering measure management area, the ecological management protection area, and the vegetation recovery buffer area according to the water level data, the exposure time of each elevation in the drawdown zone range, and the sunshine time range, and comprises: determining a target elevation according to the exposure time of each elevation and the range of the sunshine time, the target elevation being the lowest elevation whose exposure time is within the range of the sunshine time; determining the engineering measure management area according to the elevation corresponding to the lowest water level and the target elevation; determining the ecological management protection area according to the elevation corresponding to the highest water level and the target elevation; determining the vegetation recovery buffer area according to the elevation corresponding to the highest water level; the management measure corresponding to the engineering measure management area is to use only engineering measures to manage the drawdown zone; the management measure corresponding to the ecological management protection area is to use engineering measures and plant measures to manage the drawdown zone; and the management measure corresponding to the vegetation recovery buffer area is to use only plant measures to manage the drawdown zone.

6. The ecological management system of the drawdown zone of a pumped storage power station reservoir according to claim 5, characterized in that, The water level data includes the highest water level and the lowest water level of the reservoir, and the drawdown zone determining module is specifically configured to: determine the drawdown zone range according to the highest water level and the lowest water level.

7. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the program to implement the ecological management method of the drawdown zone of the pumped storage power station reservoir according to any one of claims 1 to 4.

8. A non-transitory computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the ecological management method of the drawdown zone of the pumped storage power station reservoir according to any one of claims 1 to 4.

9. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to implement the ecological management method of the drawdown zone of the pumped storage power station reservoir according to any one of claims 1 to 4.

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