CN112287528B - Flood control high water level determination method for sandy river reservoir based on high beach trough - Google Patents

Flood control high water level determination method for sandy river reservoir based on high beach trough Download PDF

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CN112287528B
CN112287528B CN202011111190.6A CN202011111190A CN112287528B CN 112287528 B CN112287528 B CN 112287528B CN 202011111190 A CN202011111190 A CN 202011111190A CN 112287528 B CN112287528 B CN 112287528B
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water level
beach
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张金良
付健
樊新颖
万占伟
罗秋实
陈翠霞
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Yellow River Engineering Consulting Co Ltd
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Abstract

The invention provides a flood control high water level determination method for a sandy river reservoir based on a high beach trough, which comprises the following steps: collecting hydrological data related to preparation design calculation; judging whether the target river belongs to a sandy river or not according to the collected hydrological data; if the reservoir sediment deposits, designing and calculating a high-beach high-groove shape state corresponding to the sediment deposition at the bottom of the reservoir, wherein the high-beach high-groove shape state comprises: longitudinal section morphology and cross section morphology; determining the flood control storage capacity of the reservoir according to the designed flood process line and the lower discharge flow process line of the reservoir; calculating the reservoir capacity of the reservoir based on the designed and calculated high beach trough form; drawing a water level reservoir capacity curve according to the calculated reservoir capacity of the reservoir; and determining the water level corresponding to the flood control storage capacity according to the water level storage capacity curve, namely the flood control high water level. The technical scheme is convenient for flood control and high water level determination according to the sediment accumulation state of the reservoir, namely the high-beach and high-trough state.

Description

Flood control high water level determination method for sandy river reservoir based on high beach trough
Technical Field
The invention relates to the technical field of water level of a water reservoir of a sandy river, in particular to a flood control high water level determination method of the water reservoir of the sandy river based on a high beach trough.
Background
According to data of Chinese water conservancy statistics yearbook, the quantity of reservoirs in China is shown to be gradually increased, about 9.8 thousands of reservoirs are built in China until 2019, and the total storage capacity of the reservoirs is about 9000 hundred million m3Effectively improves the flood-control and drought-resistant guarantee capability, exerts huge comprehensive benefits and makes important contribution to the development of the economic society of China. Most rivers in northern China are sandy rivers, and due to the fact that the water flow speed in the reservoir is reduced under the action of reservoir interception, a large amount of silt is deposited at the bottom of the reservoir, and the effective reservoir capacity of the reservoir is reduced. At present, the reservoir capacity of the built reservoir in China is continuously reduced by about 1 percent. According to incomplete statistics, the total storage capacity of 260 large and medium-sized reservoirs in the yellow river basin is 384 hundred million meters3The storage capacity of the silt is 125 hundred million meters3And accounts for 32.6% of the total storage capacity. The problem of effective reservoir capacity reduction caused by silt deposition in the sandy river reservoir is prominent in recent years, and for example, the three gorges reservoir is forced to be rebuilt for many times due to severe silt deposition in the near future. The reason for the above problems is that the influence of sediment accumulation of the sandy river is not fully considered during reservoir design, which not only causes the original design function of the reservoir to be unable to be realized, but also brings great threat to residents in the upstream beach area. Therefore, the flood control water level of the sandy river reservoir is determined by considering the silt deposition characteristics of the sandy river more fully so as to reasonably determine the flood control water level line.
In order to ensure that the reservoir has enough flood control capacity when flood comes, the reservoir is designed to generally determine the flood control water level of the reservoir according to the measurement and calculation of a downstream flood control task above the flood control limit water level, and the method mainly comprises the steps of checking the flood level, designing the flood level and controlling the flood high water level. However, in the actual operation process of the sandy river reservoir, silt deposits will take on three states, namely a high-beach trough, a high-beach middle trough and a high-beach low trough, wherein the deposition surface of the high-beach trough exceeds the flood control limit water level, and part of the reservoir capacity above the flood control limit water level is occupied by the silt deposits. Therefore, the reservoir capacity calculated based on the flood control limit water level is smaller, so that the obtained flood control water level line is possibly lower, and the potential safety hazard to residents in the beach area is huge. In order to solve the problem, a large number of researchers optimize a sand discharge means from a sand discharge angle to reduce sediment deposition to restore the effective reservoir capacity of the reservoir, but research on the influence of sediment deposition of a sandy river on the design of the water level of the reservoir is few. The invention patent considers the most unfavorable condition of sediment deposition and determines the flood control high water level of the reservoir based on the high-beach high trough, thereby solving the problem of over-low flood control water level line design caused by insufficient sediment deposition consideration.
The search shows that: patent number CN110348600A discloses a method for allocating maximum flood control capacity, which establishes a maximum target function of flood control capacity of reservoir groups to obtain the optimal capacity of each reservoir, so as to ensure safe and effective operation among the reservoirs. Patent number CN111121718A discloses a reservoir capacity and silt deposit accurate detection system and measurement method, which adopts a manned ship carrying a GPS-RTK device, a shallow profile, an electronic compass and a course correction system to measure and obtain the reservoir capacity and silt deposit. Patent number CN102852114B discloses a method for calculating reservoir sediment deposition, which mainly combines reservoir topography data analysis to obtain sediment deposition elevations of each section, thereby rapidly calculating the deposition topography and deposition amount of a certain deposition level year of a reservoir. Patent number CN105089003B discloses a reservoir flood regulation calculation method, which adopts an integral analysis method to derive a water balance differential equation to obtain a general equation for reservoir flood regulation calculation, and compared with the traditional iteration method and the longge database method, the calculation time is saved by about 70.7% and 34.4%, respectively. Patent number CN111350162A discloses a design method of digging grooves for recovering reservoir capacity in front of a deep groove reservoir dam of a high beach, wherein the digging grooves are arranged in parallel on the high beach outside a main channel of a river along the direction of the main channel of the river, so as to realize the functions of water storage and sand discharge. Patent number CN210166015U discloses a flood protection water level alarm, which mainly protects the joint of the alarm probe and the lead, and avoids the alarm failure caused by probe damage. Patent No. CN208704846U discloses a flood control water level detection device, which can measure the water level height and the water flow speed simultaneously, thereby issuing flood warning. Patent No. CN207571602U discloses an intelligent low-voltage flood control water level control system, which can quickly respond and quickly disconnect power supply when a flood comes, so as to ensure personal safety to the maximum extent.
Disclosure of Invention
The invention provides a flood control high water level determination method for a sandy river reservoir based on a high-beach high trough, which considers the influence of sediment accumulation of the sandy river on the flood control water level of the reservoir, determines the flood control high water level according to the condition that the sediment accumulation of the reservoir is the most, namely the high-beach high trough state, can ensure that the flood control reservoir capacity of the reservoir meets the original design requirement, and also ensures that the division of the immigration water return line of the upper beach area of the reservoir area is more reasonable.
The invention provides a flood control high water level determination method for a sandy river reservoir based on a high beach trough, which comprises the following steps:
step S1: collecting hydrological data related to preparation design calculation;
step S2: judging whether the target river belongs to a sandy river or not according to the collected hydrological data;
step S3: if the reservoir sediment deposits, designing and calculating a high-beach high-groove shape state corresponding to the sediment deposition at the bottom of the reservoir, wherein the high-beach high-groove shape state comprises: longitudinal section morphology and cross section morphology;
step S4: determining the flood control storage capacity of the reservoir according to the designed flood process line and the lower discharge flow process line of the reservoir;
step S5: calculating the reservoir capacity of the reservoir based on the designed and calculated high beach trough form;
step S6: drawing a water level reservoir capacity curve according to the calculated reservoir capacity of the reservoir;
step S7: and determining the water level corresponding to the flood control storage capacity according to the water level storage capacity curve, namely the flood control high water level.
In one possible way of realisation,
in step S3, the longitudinal section characteristics corresponding to the longitudinal section profile in the high beach trough profile in which the sediment at the bottom of the reservoir is deposited are expressed by the balance longitudinal gradient between the beach surface of the sandy river reservoir and the river trough,
wherein, the calculation formulas of the balance longitudinal gradient of the river channel and the beach surface are respectively as follows:
Figure BDA0002728659750000031
Figure BDA0002728659750000032
in the formula: i.e. iTroughIs the equilibrium longitudinal gradient of the river channel; k is an empirical coefficient and is inversely proportional to the average sand-coming coefficient lambda in the flood season; qsThe unit is t/s, and is the sand conveying rate at the outlet of the river reach in the flood season; d50The median diameter of suspended sediment in river section in flood season is in mm; n is the comprehensive roughness of the river reach; b is the water surface width calculated according to the average warehousing flow in the flood season, and the unit is m; h is the water depth calculated according to the average warehousing flow in the flood season, and the unit is m; i.e. iBeachThe beach surface balance longitudinal gradient; and I is the balance longitudinal gradient of the beach surface and the river channel of the sandy river reservoir.
In one possible way of realisation,
in step S3, quantifying the cross-sectional features corresponding to the cross-sectional features in the high-beach trough form in which the sediment deposits at the bottom of the reservoir, using the high-trough river width and the high-trough depth;
wherein, the calculation formula of the high groove river width and the high groove depth is respectively as follows:
B1＝25.8Q0.31
h1＝0.106Q0.44
Figure BDA0002728659750000041
in the formula: b is1The width of the high channel river is m; h is1The depth of the high groove is m; q is the bed forming flow rate in m3/s，QFlood seasonIs the average flow of flood season in unit of m3/s。
In one possible way of realisation,
in step S5, the calculated reference surface of the reservoir capacity is a high-beach trough surface on which the reservoir deposits sediment.
In one possible way of realisation,
before collecting hydrologic data related to preparation design calculation, the method also comprises the following steps:
determining an acquisition port set for acquiring hydrological data related to preparation design calculation, and determining a port sequence of each target port in the acquisition port set;
determining an acquisition task executed by each target port and acquisition information corresponding to the acquisition task;
according to the port sequence, the acquisition task and the corresponding acquisition information, determining the standard information acquisition amount, the standard information acquisition speed and the standard acquisition effectiveness of each target port;
acquiring an acquisition log of the historical information acquired by the target ports based on the timestamp, analyzing the acquisition log, and constructing an acquisition curve of each target port;
inputting the acquisition curve into an acquisition analysis model, analyzing port damage information of the acquisition port, and meanwhile, performing pre-splitting processing on the port damage information to obtain a damage index set related to the port damage information;
extracting a first set related to the standard information acquisition quantity, a second set related to the standard information acquisition speed and a third set related to the standard acquisition effectiveness from the damage index set;
performing first correction processing on the standard information acquisition amount based on the first set to obtain actual acquisition amount, performing second correction processing on the standard acquisition speed based on the second set to obtain actual acquisition speed, and performing third correction processing on the standard acquisition validity based on the third set to obtain actual acquisition validity;
and sequencing the target ports according to the obtained actual acquisition amount, the actual acquisition speed and the actual acquisition effectiveness and port acquisition rules, and controlling the corresponding target ports to acquire the corresponding hydrological data based on sequencing results.
In one possible way of realisation,
according to the calculated reservoir capacity, the process of drawing the water level reservoir capacity curve comprises the following steps:
acquiring the storage capacity of the reservoir in different time periods, and determining the size of the storage capacity corresponding to each time period;
based on the reservoir difference parameters corresponding to two time periods in different time periods, the size of the storage capacity is corrected according to the reservoir difference parameters, and the method comprises the following steps:
acquiring a scheduling rule from a scheduling database according to the reservoir difference parameter, determining standard storage capacity information between adjacent time periods according to the scheduling rule, and preprocessing the standard storage capacity information to acquire a corresponding standard storage capacity sequence;
meanwhile, the standard library capacity sequence is led into a standard output model to obtain a standard judgment set;
acquiring a difference sequence related to standard storage capacity information between the adjacent time periods in the reservoir difference parameters, judging the difference sequence based on the standard judgment set, and acquiring a judgment value F according to the following formula;
Figure BDA0002728659750000051
wherein h represents the sequence number of the difference sequence; m1 represents the total number of judgment rules in the standard judgment set; ziThe sequence attribute value of the ith sequence in the differential sequence is represented, and the value range is [1,3 ]]；GkThe rule attribute value of the kth judgment rule is represented, and the value range is [2,3 ]]；AmaxRepresenting the number of largest homogeneous sequences among the differential sequences; a. theminRepresenting the number of the smallest homogeneous sequences in the difference sequences; a represents the median of all corresponding numbers of homogeneous sequences in the differential sequence;
when the judgment value P is smaller than or equal to a preset value, the reservoir difference parameter is qualified;
otherwise, calling an optimized parameter of the reservoir difference parameter, and adjusting the reservoir difference parameter based on the optimized parameter;
and correcting the corresponding storage capacity based on the qualified reservoir difference parameter and the adjusted reservoir difference parameter.
In one possible way of realisation,
the step of judging whether the target river belongs to the sandy river or not according to the collected hydrological data comprises the following steps:
time splitting is carried out on the hydrological data based on the timestamp, and meanwhile river data related to the target river are extracted based on the hydrological data after the time splitting;
optimizing a river output model according to the difference of the river data in different time periods;
transmitting the river data to an optimized river output model, and judging the single river attribute of the target river in different time periods;
determining the comprehensive river attribute of the target river according to the single river attribute and the weather condition of the corresponding time period;
when the comprehensive value corresponding to the comprehensive river attribute is larger than a preset value, judging that the target river belongs to a sandy river, and outputting and displaying;
otherwise, alarming and reminding.
In one possible way of realisation,
the step of determining the water level corresponding to the flood control storage capacity according to the water level storage capacity curve as the flood control high water level comprises the following steps:
and according to the water level reservoir capacity curve, utilizing the interpolation of the flood control reservoir capacity to obtain the corresponding current water level which is the flood control high water level.
The invention has the advantages that: the reservoir has the characteristics of a dead beach and movable trough, silt is flushed in the trough, and the silt can possibly invade the trough above the flood control limit water level. Reservoir silt sedimentation characteristics are not fully considered in the traditional flood control water level design, and the flood control high water level determined based on the rising and the falling of the flood control limit water level is too low, so that flood threats can be caused to residents in the upstream beach area, and social problems are induced. Therefore, the flood control high water level determination method for the sandy river reservoir based on the high-beach high trough fully considers the sediment accumulation characteristics of the sandy river reservoir, and adjusts the reservoir in the most unfavorable high-beach high trough state of reservoir accumulation to determine the flood control high water level. The implementation of the invention has important significance for guaranteeing the flood control capability of the reservoir.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a flood control high water level determination method for a sandy river reservoir based on a high beach trough according to an embodiment of the invention;
fig. 2 is a schematic longitudinal section of a high bank trough of a reservoir.
Fig. 3 is a schematic cross-sectional view of a reservoir beach elevation groove a-a.
Fig. 4 is a schematic view of determining the flood control capacity of the reservoir.
Fig. 5 is a water level reservoir capacity graph based on a beach trough.
In the figure: 1, original river bottom; 2, silting up silt; 3, deep groove; 4, a high groove; 5, high beach; 6, flood control storage capacity; 7, sand discharging bottom holes.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The invention provides a flood control high water level determination method for a sandy river reservoir based on a high beach trough, which comprises the following steps:
step S1: collecting hydrological data related to preparation design calculation;
step S2: judging whether the target river belongs to a sandy river or not according to the collected hydrological data;
step S3: if the reservoir sediment deposits, designing and calculating a high-beach high-groove shape state corresponding to the sediment deposition at the bottom of the reservoir, wherein the high-beach high-groove shape state comprises: longitudinal section morphology and cross section morphology;
step S4: determining the flood control storage capacity of the reservoir according to the designed flood process line and the lower discharge flow process line of the reservoir;
step S5: calculating the reservoir capacity of the reservoir based on the designed and calculated high beach trough form;
step S6: drawing a water level reservoir capacity curve according to the calculated reservoir capacity of the reservoir;
step S7: and determining the water level corresponding to the flood control storage capacity according to the water level storage capacity curve, namely the flood control high water level.
For the above technical solution, refer to fig. 1 specifically.
Further, in step S3, when the reservoir operates at the flood control limit water level, the sediment at the bottom of the reservoir is deposited in a high-beach high-tank deposition pattern.
Further, in step S4, a flood control capacity of the reservoir is determined by plotting a flood process line and a lower discharge process line of the reservoir, which is required to be drawn so that the maximum allowable lower discharge capacity of the reservoir cannot be exceeded, as shown in fig. 4.
Further, in step S5, the calculation reference surface of the reservoir capacity is a plateau trough surface. Reservoir storage capacity under different water level conditions is calculated based on the high-beach trough state, and the interval of the layered storage capacity is required to be 0.01 m.
Further, in step S6, reservoir capacities corresponding to different water levels are calculated according to step S5, and the reservoir capacities obtained by calculating the reservoir capacities based on the high beach trough are plotted as a graph shown in fig. 5 to be used in step S7.
Further, in step S7, the horizontal axis of the curve of the reservoir capacity of fig. 5 indicates the calculated capacity based on the highbank trough, and the starting point of the vertical axis indicates the water level corresponding to the x-axis shown in fig. 2, where a1 is the flood-control high water level, a2 is the normal water level, a3 is the flood-control limiting water level, and a4 is the dead water level.
The beneficial effects of the above technical scheme are: the flood control high water level is determined according to the condition that the silt of the reservoir is most deposited, namely the high-beach high trough state, so that the flood control capacity of the reservoir can meet the original design requirement, and the division of the immigration water return line of the upstream beach area of the reservoir area is more reasonable.
The invention provides a method for determining flood control high water level of a sandy river reservoir based on a high beach high trough, in step S3, the longitudinal section characteristics corresponding to the longitudinal section form in the high beach high trough form of sediment deposition at the bottom of the reservoir are expressed by the balance longitudinal gradient of the beach face and the river trough of the sandy river reservoir,
wherein, the calculation formulas of the balance longitudinal gradient of the river channel and the beach surface are respectively as follows:
Figure BDA0002728659750000091
Figure BDA0002728659750000092
in the formula: i.e. iTroughIs the equilibrium longitudinal gradient of the river channel; k is an empirical coefficient and is inversely proportional to the average sand-coming coefficient lambda in the flood season; qsThe unit is t/s, and is the sand conveying rate at the outlet of the river reach in the flood season; d50The median diameter of suspended sediment in river section in flood season is in mm; n is the comprehensive roughness of the river reach; b is the water surface width calculated according to the average warehousing flow in the flood season, and the unit is m; h is the water depth calculated according to the average warehousing flow in the flood season, and the unit is m; i.e. iBeachThe beach surface balance longitudinal gradient; and I is the balance longitudinal gradient of the beach surface and the river channel of the sandy river reservoir.
In the embodiment, K is an empirical coefficient, and is inversely proportional to the average sand-coming coefficient lambda (the ratio of sand content to flow) in the flood season, and the specific value is shown in the sediment design manual.
In this embodiment of the present invention,
Figure BDA0002728659750000093
generally, the value of the sand-rich river is 0.6 according to engineering experience.
In this embodiment, when there is a difference in the balance longitudinal gradient between the upper section and the lower section of the reservoir, the correlation equation is used for conversion, and the conversion equation is:
Figure BDA0002728659750000094
the relation of the balance longitudinal gradient of the upstream river channel and the beach surface of the reservoir is as follows:
Figure BDA0002728659750000095
in the formula: i.e. iTailThe balance longitudinal gradient of the tail section of the reservoir; i.e. iOn the upper partFor reservoirThe balance longitudinal gradient of the natural river section at the upstream of the tail section; i.e. iBeach-reservoir upper segmentThe balance longitudinal gradient of the beach surface of the upper section of the reservoir; i.e. iUpper section of tank-reservoirThe balance longitudinal gradient of the upper section of the river channel of the reservoir;
Figure BDA0002728659750000101
generally, according to engineering experience, 0.5 is recommended for sandy rivers.
The invention provides a method for determining flood control high water level of a sandy river reservoir based on a high beach and high trough, as shown in figure 3,
in step S3, quantifying the cross-sectional features corresponding to the cross-sectional features in the high-beach trough form in which the sediment deposits at the bottom of the reservoir, using the high-trough river width and the high-trough depth;
wherein, the calculation formula of the high groove river width and the high groove depth is respectively as follows:
B1＝25.8Q0.31
h1＝0.106Q0.44
Figure BDA0002728659750000102
in the formula: b is1The width of the high channel river is m; h is1The depth of the high groove is m; q is the bed forming flow rate in m3/s，QFlood seasonIs the average flow of flood season in unit of m3/s。
The invention provides a flood control high water level determination method for a sandy river reservoir based on a high beach and high trough,
in step S5, the calculated reference surface of the reservoir capacity is a high-beach trough surface on which the reservoir deposits sediment.
The invention provides a flood control high water level determination method for a sandy river reservoir based on a high beach and high trough, which comprises the following steps of before acquiring hydrological data related to preparation design calculation:
determining an acquisition port set for acquiring hydrological data related to preparation design calculation, and determining a port sequence of each target port in the acquisition port set;
determining an acquisition task executed by each target port and acquisition information corresponding to the acquisition task;
according to the port sequence, the acquisition task and the corresponding acquisition information, determining the standard information acquisition amount, the standard information acquisition speed and the standard acquisition effectiveness of each target port;
acquiring an acquisition log of the historical information acquired by the target ports based on the timestamp, analyzing the acquisition log, and constructing an acquisition curve of each target port;
inputting the acquisition curve into an acquisition analysis model, analyzing port damage information of the acquisition port, and meanwhile, performing pre-splitting processing on the port damage information to obtain a damage index set related to the port damage information;
extracting a first set related to the standard information acquisition quantity, a second set related to the standard information acquisition speed and a third set related to the standard acquisition effectiveness from the damage index set;
performing first correction processing on the standard information acquisition amount based on the first set to obtain actual acquisition amount, performing second correction processing on the standard acquisition speed based on the second set to obtain actual acquisition speed, and performing third correction processing on the standard acquisition validity based on the third set to obtain actual acquisition validity;
and sequencing the target ports according to the obtained actual acquisition amount, the actual acquisition speed and the actual acquisition effectiveness and port acquisition rules, and controlling the corresponding target ports to acquire the corresponding hydrological data based on sequencing results.
In this embodiment, the determination of the acquisition port sequence is to improve acquisition efficiency;
the purpose of distinguishing the ports is to facilitate subsequent effective acquisition of hydrological data by determining acquisition tasks and acquisition information.
In this embodiment, the standard information collection amount is an information volume collected under a general condition, the standard information collection speed is a collection transmission rate under a general condition, and the standard collection validity is an effective information volume, an effective transmission rate, an available information proportion in collected information, and the like, which are collected correspondingly under a general condition.
In this embodiment, the port breakage information is related to port line damage, aging, and the like.
In this embodiment, the first correction process, the second correction process, and the third correction process are performed in order to acquire relevant actual data.
In this embodiment, the ordering of the target ports is for effective acquisition of hydrologic data.
The beneficial effects of the above technical scheme are: the purpose of distinguishing the ports is to conveniently and effectively collect the subsequent hydrological data by determining the collection task and the collection information, and the purpose of sequencing the target ports is to effectively collect the hydrological data and reasonably provide an indirect basis for reasonably dividing the immigration water return line of the upstream beach area of the reservoir area.
The invention provides a flood control high water level determination method for a sandy river reservoir based on a high beach trough, which comprises the following steps of:
acquiring the storage capacity of the reservoir in different time periods, and determining the size of the storage capacity corresponding to each time period;
based on the reservoir difference parameters corresponding to two time periods in different time periods, the size of the storage capacity is corrected according to the reservoir difference parameters, and the method comprises the following steps:
acquiring a scheduling rule from a scheduling database according to the reservoir difference parameter, determining standard storage capacity information between adjacent time periods according to the scheduling rule, and preprocessing the standard storage capacity information to acquire a corresponding standard storage capacity sequence;
meanwhile, the standard library capacity sequence is led into a standard output model to obtain a standard judgment set;
acquiring a difference sequence related to standard storage capacity information between the adjacent time periods in the reservoir difference parameters, judging the difference sequence based on the standard judgment set, and acquiring a judgment value F according to the following formula;
Figure BDA0002728659750000121
wherein h represents the sequence number of the difference sequence; m1 represents the total number of judgment rules in the standard judgment set; ziThe sequence attribute value of the ith sequence in the differential sequence is represented, and the value range is [1,3 ]]；GkThe rule attribute value of the kth judgment rule is represented, and the value range is [2,3 ]]；AmaxRepresenting the number of largest homogeneous sequences among the differential sequences; a. theminRepresenting the number of the smallest homogeneous sequences in the difference sequences; a represents the median of all corresponding numbers of homogeneous sequences in the differential sequence;
when the judgment value P is smaller than or equal to the preset value, the reservoir difference parameter is qualified;
otherwise, calling an optimized parameter of the reservoir difference parameter, and adjusting the reservoir difference parameter based on the optimized parameter;
and correcting the corresponding storage capacity based on the qualified reservoir difference parameter and the adjusted reservoir difference parameter.
In this embodiment, the optimization parameters are related to sludge, basin, flow, water level, and the like.
The beneficial effects of the above technical scheme are: the method comprises the steps of obtaining reservoir difference parameters of different time periods to facilitate correction of the size of the reservoir, obtaining a scheduling rule to further obtain a related standard reservoir sequence, effectively determining whether the difference sequence is qualified or not by determining a judgment value between the difference sequence and a standard judgment set, and obtaining optimization parameters to optimize and adjust the optimization parameters when the difference sequence is unqualified so as to facilitate guarantee the accuracy of the size of the obtained reservoir.
The invention provides a flood control high water level determination method for a sandy river reservoir based on a high beach and high trough, which comprises the following steps of judging whether a target river belongs to a sandy river according to collected hydrological data:
time splitting is carried out on the hydrological data based on the timestamp, and meanwhile river data related to the target river are extracted based on the hydrological data after the time splitting;
optimizing a river output model according to the difference of the river data in different time periods;
transmitting the river data to an optimized river output model, and judging the single river attribute of the target river in different time periods;
determining the comprehensive river attribute of the target river according to the single river attribute and the weather condition of the corresponding time period;
when the comprehensive value corresponding to the comprehensive river attribute is larger than a preset value, judging that the target river belongs to a sandy river, and outputting and displaying;
otherwise, alarming and reminding.
The beneficial effects of the above technical scheme are: the hydrologic data are subjected to time splitting and extraction, so that the effectiveness of the acquired data is ensured, the subsequent processing efficiency is improved, the river output model is optimized by determining the difference, the comprehensive river attribute is determined by acquiring the single river attribute and combining the weather condition, and a foundation is provided for determining whether the river is sandy.
The invention provides a flood control high water level determination method for a sandy river reservoir based on a high beach and high trough, which comprises the following steps of determining the water level corresponding to a flood control reservoir capacity according to a water level reservoir capacity curve, namely the flood control high water level:
and according to the water level reservoir capacity curve, utilizing the interpolation of the flood control reservoir capacity to obtain the corresponding current water level which is the flood control high water level.
The beneficial effects of the above technical scheme are: by comparison, the determination efficiency is improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (7)

1. A flood control high water level determination method for a sandy river reservoir based on a high beach trough is characterized by comprising the following steps:
step S1: collecting hydrological data related to preparation design calculation;
step S2: judging whether the target river belongs to a sandy river or not according to the collected hydrological data;
step S3: if the reservoir sediment deposits, designing and calculating a high-beach high-groove shape state corresponding to the sediment deposition at the bottom of the reservoir, wherein the high-beach high-groove shape state comprises: longitudinal section morphology and cross section morphology;
step S4: determining the flood control storage capacity of the reservoir according to the designed flood process line and the lower discharge flow process line of the reservoir;
step S5: calculating the reservoir capacity of the reservoir based on the designed and calculated high beach trough form;
step S6: drawing a water level reservoir capacity curve according to the calculated reservoir capacity of the reservoir;
step S7: determining the water level corresponding to the flood control storage capacity according to the water level storage capacity curve as a flood control high water level;
before collecting hydrologic data related to preparation design calculation, the method also comprises the following steps:
determining an acquisition port set for acquiring hydrological data related to preparation design calculation, and determining a port sequence of each target port in the acquisition port set;
determining an acquisition task executed by each target port and acquisition information corresponding to the acquisition task;
according to the port sequence, the acquisition task and the corresponding acquisition information, determining the standard information acquisition amount, the standard information acquisition speed and the standard acquisition effectiveness of each target port;
acquiring an acquisition log of the historical information acquired by the target ports based on the timestamp, analyzing the acquisition log, and constructing an acquisition curve of each target port;
inputting the acquisition curve into an acquisition analysis model, analyzing port damage information of the acquisition port, and meanwhile, performing pre-splitting processing on the port damage information to obtain a damage index set related to the port damage information;
extracting a first set related to the standard information acquisition quantity, a second set related to the standard information acquisition speed and a third set related to the standard acquisition effectiveness from the damage index set;
performing first correction processing on the standard information acquisition amount based on the first set to obtain actual acquisition amount, performing second correction processing on the standard acquisition speed based on the second set to obtain actual acquisition speed, and performing third correction processing on the standard acquisition validity based on the third set to obtain actual acquisition validity;
and sequencing the target ports according to the obtained actual acquisition amount, the actual acquisition speed and the actual acquisition effectiveness and port acquisition rules, and controlling the acquisition of the hydrological data corresponding to the corresponding target ports based on sequencing results.
2. The flood control high water level determination method for the sandy river reservoir based on the high beach trough according to claim 1, wherein in step S3, the vertical section characteristics corresponding to the vertical section configuration in the high beach trough configuration in which the sediment is deposited at the bottom of the reservoir are expressed by the balance vertical slope of the beach surface and the river trough of the sandy river reservoir,
wherein, the calculation formulas of the balance longitudinal gradient of the river channel and the beach surface are respectively as follows:
Figure FDA0003080306370000021
Figure FDA0003080306370000022
in the formula: i.e. iTroughIs the equilibrium longitudinal gradient of the river channel;k is an empirical coefficient and is inversely proportional to the average sand-coming coefficient lambda in the flood season; qsThe unit is t/s, and is the sand conveying rate at the outlet of the river reach in the flood season; d50The median diameter of suspended sediment in river section in flood season is in mm; n is the comprehensive roughness of the river reach; b is the water surface width calculated according to the average warehousing flow in the flood season, and the unit is m; h is the water depth calculated according to the average warehousing flow in the flood season, and the unit is m; i.e. iBeachThe beach surface balance longitudinal gradient; and I is the balance longitudinal gradient of the beach surface and the river channel of the sandy river reservoir.
3. The flood control high water level determination method for the sandy river reservoir based on the high beach trough according to claim 1, wherein in step S3, the cross sectional profile of the high beach trough profile in which the sediment deposits at the bottom of the reservoir is quantified with the high trough river width and the high trough depth corresponding to the cross sectional profile;
wherein, the calculation formula of the high groove river width and the high groove depth is respectively as follows:
B1＝25.8Q0.31
h1＝0.106Q0.44
Figure FDA0003080306370000031
in the formula: b is1The width of the high channel river is m; h is1The depth of the high groove is m; q is the bed forming flow rate in m3/s，QFlood seasonIs the average flow of flood season in unit of m3/s。
4. The flood control high water level determination method for the sandy river reservoir based on the high beach trough according to claim 1, wherein in step S5, the calculated reference surface of the reservoir capacity is the surface of the high beach trough on which the reservoir silts and deposits.
5. The flood control high water level determination method for the sandy river reservoir based on the high beach trough according to claim 1, wherein the step of drawing the water level reservoir capacity curve according to the calculated reservoir capacity comprises the following steps:
acquiring the storage capacity of the reservoir in different time periods, and determining the size of the storage capacity corresponding to each time period;
based on the reservoir difference parameters corresponding to two time periods in different time periods, the size of the storage capacity is corrected according to the reservoir difference parameters, and the method comprises the following steps:
acquiring a scheduling rule from a scheduling database according to the reservoir difference parameter, determining standard storage capacity information between adjacent time periods according to the scheduling rule, and preprocessing the standard storage capacity information to acquire a corresponding standard storage capacity sequence;
meanwhile, the standard library capacity sequence is led into a standard output model to obtain a standard judgment set;
acquiring a difference sequence related to standard storage capacity information between the adjacent time periods in the reservoir difference parameters, judging the difference sequence based on the standard judgment set, and acquiring a judgment value F according to the following formula;
Figure FDA0003080306370000032
wherein h represents the sequence number of the difference sequence; m1 represents the total number of judgment rules in the standard judgment set; ziThe sequence attribute value of the ith sequence in the differential sequence is represented, and the value range is [1,3 ]]；GkThe rule attribute value of the kth judgment rule is represented, and the value range is [2,3 ]]；AmaxRepresenting the number of largest homogeneous sequences among the differential sequences; a. theminRepresenting the number of the smallest homogeneous sequences in the difference sequences; a represents the median of all numbers corresponding to the same-class sequences in the differential sequences;
when the judgment value P is smaller than or equal to a preset value, the reservoir difference parameter is qualified;
otherwise, calling an optimized parameter of the reservoir difference parameter, and adjusting the reservoir difference parameter based on the optimized parameter;
and correcting the corresponding storage capacity based on the qualified reservoir difference parameter and the adjusted reservoir difference parameter.
6. The flood control high water level determination method for the sandy river reservoir based on the high beach trough as claimed in claim 1, wherein the step of determining whether the target river belongs to the sandy river according to the collected hydrological data comprises:
time splitting is carried out on the hydrological data based on the timestamp, and meanwhile river data related to the target river are extracted based on the hydrological data after the time splitting;
optimizing a river output model according to the difference of the river data in different time periods;
transmitting the river data to an optimized river output model, and judging the single river attribute of the target river in different time periods;
determining the comprehensive river attribute of the target river according to the single river attribute and the weather condition of the corresponding time period;
when the comprehensive value corresponding to the target river attribute is larger than a preset value, judging that the target river belongs to a sandy river, and outputting and displaying;
otherwise, alarming and reminding.
7. The method as claimed in claim 1, wherein the step of determining the flood protection capacity corresponding to the flood protection capacity as the flood protection high water level according to the capacity curve comprises:
and according to the water level reservoir capacity curve, utilizing the interpolation of the flood control reservoir capacity to obtain the corresponding current water level which is the flood control high water level.
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