JP4869085B2 - Waste sand gate operation method, waste sand gate operation system, and waste sand gate operation program - Google Patents

Description

  The present invention relates to a sand removal gate operation method, a sand removal gate operation system, and a sand removal gate operation program, and specifically, a technique for determining an optimum operation pattern of a sand removal gate in a flow-type hydroelectric power plant. About.

  Techniques related to intake control methods for flow-type hydroelectric power plants have been proposed. For example, in consideration of the amount of water as well as sand contained in river water, provide a water intake control method for an inflow-type hydropower plant that can reduce damage to the power plant equipment and improve the operating rate of the power plant. Measure the turbidity in the river (1) adjacent to the intake control gate (5), and when the intake control gate (5) is open, the turbidity is above the upper limit of turbidity If the turbidity falls below the lower limit of turbidity when the intake control gate (5) is closed and intake is stopped, and the intake control gate (5) is closed, A water intake control method for a flow-type hydroelectric power plant (see Patent Document 1) characterized by reopening the water intake gate (5) and resuming water intake has been proposed.

In addition, we set up a permeable sabo dam and aimed to reduce the load on the vortex and the sand drain pipe by homogenizing fine grains of sand and sand flowing into the reservoir and reservoir. (1) Upstream of reservoirs and reservoirs In addition, multi-stage permeable sabo dams (slit dams and three-dimensional lattice dams) with different slit widths are provided, and the grain size composition of the inflow soil into the reservoir / reservoir is uniformly refined by utilizing its adjustment / classification action. In addition, the load on the vortex sand discharge pipe installed in the downstream water storage / take-up dam is reduced, while the sediment that flows into and accumulates in the reservoir / reservoir is mainly used for environmental conservation during floods where natural sand discharge is possible. With the same diameter and the same gradient as the circular sand discharge pipe in the bottom longitudinal direction, the guide wall with extremely high sand discharge efficiency and the circular vortex sand discharge pipe with slit are communicated within the effective vortex pipe length (or effective slit length) range. Containing high concentration in the vortex sand pipe from the slit. While generating a high-speed spiral flow in the sand water flow, it is possible to flow to the sand discharge pipe of the dam, and the slit adjustment gate attached to the vortex sand discharge pipe and various adjustment gates attached to the sand discharge pipe in the dam Reservoir, characterized by adopting a wire sand discharge method that allows the double gates such as to be opened and closed by hydraulic pressure and remote operation, and can discharge sand and mud without interrupting various water storage and intake purposes Tameike sand removal and mud drainage system construction method. (2) Conveying wall buried in the downstream of the bottom of a reservoir, reservoir, etc., a vortex sand pipe with slits (uniform slit and variable slit), and the same diameter and the same gradient as the vortex sand pipe Multiple-slit adjustment gates with tuned vortex sand pipe slits that are opened and closed by hydraulic pressure and remote operation, and sand discharges in circular sand discharge pipes that are embedded through the dam from the downstream end of the pond bottom to the downstream river part A reservoir / reservoir sand removal / sludge system device (see Patent Document 2), which is characterized by the fact that various dual-type adjustment gates for the pipes are also provided, has been proposed.
JP 2006-37354 A JP-A-10-266171

  By the way, in the flow-in type hydroelectric power plant, a drainage gate is installed around the intake dam, and sediment deposited on the upstream side of the intake dam is discharged downstream during the flood season. The operation method was determined based on the intake dam water level and downstream water level fluctuations. However, no consideration has been given to optimizing sediment discharge in determining operational methods. Therefore, if the operation method determined based on this process is executed, sediment accumulation will proceed upstream of the intake dam, and much time and cost would be spent on the subsequent sediment discharge work.

  Therefore, the present invention has been made in view of the above problems, and it is a main object of the present invention to provide a technique that enables a sand discharge gate operation that minimizes the amount of sediment deposited for each water discharge pattern while corresponding to the downstream water level fluctuation limitation. And

  The drainage gate operation method of the present invention that solves the above-mentioned problems is a drainage gate operation method in a flow-in type hydroelectric power plant, and includes a past water discharge pattern of the hydropower plant and a downstream water level fluctuation of the hydropower plant. And a numerical analysis process for estimating the sediment volume in the water area near the drainage gate for each drainage gate operation pattern, and for each drainage gate operation pattern for the downstream water level fluctuation of each discharge pattern. Based on the historical analysis process of acquiring sediment sediment volume data, and the sediment sediment volume data for each drainage gate operation pattern with respect to the downstream stream level fluctuation of each of the obtained flood patterns, the downstream water level fluctuation is below a predetermined standard. A correspondence table creation process for identifying a drainage gate optimum operation pattern for which the amount of sediment is minimized for each drainage pattern and creating a correspondence table between the drainage pattern and the drainage gate optimum operation pattern; At the time of actual flooding of the hydroelectric power plant, the flooding information at the time of flooding is collated with the correspondence table, the optimum drainage gate operation pattern corresponding to the flooding pattern corresponding to the flooding is specified, and this drainage gate optimum operation And an optimum pattern specifying step for executing an operation operation of the sand removal gate based on the pattern. According to this, it is possible to operate a sand discharge gate that minimizes the amount of sediment deposited for each water discharge pattern while corresponding to the downstream water level fluctuation restriction.

  In the optimum pattern specifying step, the upstream rainfall information of the hydroelectric power station at the time of actual water discharge is collated with a table that defines the relationship between the upstream rainfall of the hydroelectric power station and the water discharge pattern. The water discharge pattern at the time of actual water discharge may be estimated, and the optimum sand drainage gate operation pattern corresponding to the water discharge pattern may be specified. According to this, it becomes possible to estimate a flood pattern based on upstream rainfall, and to determine a more efficient operation method.

  Further, the drainage gate operation system of the present invention is a system for performing drainage gate operation in a flow-in type hydroelectric power plant, and is an arithmetic device, a memory, an input device, an output device, and a sediment accumulation amount in a water channel. And a storage device for storing information on past water discharge patterns and downstream water level fluctuations, and the arithmetic unit is configured to store past water discharge patterns and downstream water level fluctuations from the storage device. Is read out and stored in the memory, the numerical analysis program is read out from the storage device into the memory, executed on the condition of the past water discharge pattern in the memory and the information on the downstream water level fluctuation, and the discharge The amount of sediment in the water area near the sand gate is estimated for each operation pattern of the drainage gate, and the amount of sediment in each drainage gate operation pattern for the downstream water level fluctuation of each discharge pattern is estimated. Data is stored in the memory, and the sediment volume data for each drainage gate operation pattern for the downstream water level fluctuation of each water discharge pattern is read from the memory, and based on this data, the downstream water level fluctuation is a predetermined standard. In the following, the optimum drainage gate operation pattern that minimizes the sediment volume is identified for each water discharge pattern, a correspondence table between the drainage pattern and the optimum drainage gate operation pattern is created, stored in memory, and the hydroelectric power generation At the time of actual water discharge at the station, the water discharge information at the time of the water discharge is obtained from the input device, the water discharge information is collated with the correspondence table in the memory, and the drainage gate optimum operation according to the water discharge pattern corresponding to the water discharge. A pattern is specified, and information on the specified sand drainage optimum operation pattern is output to an output device. According to this, it is possible to provide a computer system that enables a sand drainage gate operation that minimizes the amount of sediment deposited for each water discharge pattern while corresponding to the downstream water level fluctuation restriction.

The drainage gate operation program according to the present invention includes an arithmetic device, a memory, an input device, an output device, a storage device for storing a numerical analysis program for the amount of sediment deposited in a water channel, a past water discharge pattern, and a downstream side. more computer having a storage device for storing information of the level change, a program for outputting the optimal operational pattern for operation sediment Gate in-river hydro power plants, in the computer, the storage device Reading the past water discharge pattern and downstream water level fluctuation information and storing it in the memory; reading the numerical analysis program from the storage device into the memory; and the past water discharge pattern and the downstream side in the memory It is executed under the condition of information on water level fluctuations, and the amount of sediment in the water area near the drainage gate is estimated for each operation pattern of the drainage gate. Acquiring sediment volume data for each drainage gate operation pattern for downstream water level fluctuations in the water pattern and storing it in a memory; and for each drainage gate operation pattern for downstream water level fluctuations of each water discharge pattern from the memory Read out sediment sediment data, and based on this data, identify the optimum drainage gate operation pattern for each drainage pattern where the downstream water level fluctuation is less than the specified standard and the sedimentary sediment volume is minimum. Creating a correspondence table with the optimum operation pattern and storing it in the memory, and at the time of actual water discharge of the hydroelectric power plant, the water discharge information at the time of the water discharge is obtained from the input device, and the water discharge information is stored in the memory To identify the optimum operation pattern of the sand discharge gate corresponding to the water discharge pattern corresponding to the water discharge, and And outputting information of the operation pattern in the output device, a program for executing the. According to this, it is possible to provide a program for causing a computer to execute a sand discharge gate operation that minimizes the amount of sediment deposited for each water discharge pattern while corresponding to the downstream water level fluctuation restriction.

  In addition, the problems disclosed by the present application and the solutions thereof will be clarified by the embodiments of the present invention and the drawings.

  ADVANTAGE OF THE INVENTION According to this invention, the sand discharge gate operation which minimizes the sediment accumulation amount for every water discharge pattern is attained, respond | corresponding to a downstream water level fluctuation | variation restriction | limiting.

---- Flow measurement system ---
Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a network configuration diagram including the sand discharge gate operation system 100 of the present embodiment. In the description of the sand removal gate operation system 100 here, the sand removal gate operation system 100 is described as being executed by the sand removal gate operation system 100. However, it is natural that the drainage gate operation method (corresponding to claim 1) as a construction method, in which the results of processing of a computing terminal such as a computer at the wastewater gate operation site, etc. are combined with each other, is manually linked. To be included.

  In the present embodiment, as shown in the figure, the actual flow-in hydroelectric power plant 5 is provided with a water intake dam 6 for taking water for power generation. A sand removal gate 10 is provided for appropriately discharging the sediment 7 accumulated. Further, a rain gauge 200 for measuring the upstream rainfall is installed on the upstream side of the intake dam 6. The rain gauge 200 is connected to the sand removal gate operation system 100 via the network 160 or a communication interface (NIC 107 described later) of the sand removal gate operation system 100, and the rainfall measurement value upstream of the intake dam is taken into the system side. To provide.

  On the other hand, the sand discharge gate operation system 100 (hereinafter, system 100) is a computer system that performs the optimum operation of the sand discharge gate installed in the hydroelectric power plant 5, and executes the sand discharge gate operation method of the present invention. The program 102 stored in the hard disk drive 101 or the like is read out to the RAM 103 (memory) and executed by the CPU 104 as the arithmetic unit.

  The system 100 includes an input interface 105 (input device) such as various keyboards and buttons generally provided in a computer device, an output interface 106 (output device) such as a display, and a rain gauge 200. It has a NIC (Network Interface Card) 107 for transferring data.

  The system 100 is connected to the rain gauge 200 via the various networks 160 such as the Internet and a LAN by the NIC 107, and executes data exchange. The system 100 also includes a flash ROM 108, a bridge 109 that relays a bus connecting the units 101 to 108, and a power source 121.

  The flash ROM 108 stores a BIOS 120. After the power supply 121 is turned on, the CPU 104 first accesses the flash ROM 108 and executes the BIOS 120 to recognize the system configuration of the system 100. The hard disk drive 101 stores an OS 118 in addition to the functional units and databases. The OS 118 is a program for the CPU 104 to control each unit 101 to 108 of the system 100 and execute each function unit to be described later. In accordance with the BIOS 120, the CPU 104 loads the OS 118 from the hard disk drive 101 to the RAM 103 and executes it. Thereby, the CPU 104 controls each part of the system 100 in an integrated manner.

  Subsequently, functional units that are configured and held by the system 100 based on the program 102 will be described. The system 100 includes a correspondence database 150 that stores a table 125, a program database 151 that stores a numerical analysis program, information on past water discharge patterns and downstream water level fluctuations in the hydroelectric power station 5, and the like. An attribute database 152 that stores attribute data of the hydroelectric power station 5 and a rainwater flooding pattern table 153 that defines the relationship between the upstream rainfall and the flooding pattern of the hydropower station 5 are stored in an appropriate storage device such as the hard disk drive 101. It shall have.

  The system 100 includes a history acquisition unit 110 that reads information about past water discharge patterns and downstream water level fluctuations from the attribute database 152 of the hard disk drive 101 serving as the storage device, and stores the information in the RAM 103 serving as a memory.

  Further, the system 100 reads the numerical analysis program from the program database 151 of the hard disk drive 101 to the RAM 103, and executes the past water discharge pattern in the RAM 103 and information on downstream water level fluctuations as conditions, Estimate the amount of sediment in the water area near the sand discharge gate for each operation pattern of the sand discharge gate, acquire the data of the amount of sediment in each drainage gate operation pattern for the downstream water level fluctuation of each discharge pattern, and store it in the RAM103 The analyzing unit 111 is provided.

  Further, the system 100 reads out data of the sediment volume for each drainage gate operation pattern with respect to the downstream water level fluctuation of each water discharge pattern from the RAM 103, and based on this data, the sediment water sediment with the downstream water level fluctuation below a predetermined standard. A table that specifies a drainage gate optimum operation pattern with a minimum amount for each water discharge pattern, creates a correspondence table 125 between the water discharge pattern and the drainage gate optimum operation pattern, and stores it in the RAM 103 or the hard disk drive 101. A creation unit 112 is provided.

  Further, the system 100 obtains the water discharge information at the time of the water discharge from the input device 105 at the time of the actual water discharge of the hydroelectric power station 5, collates the water discharge information with the correspondence table 125 in the RAM 103, and The pattern specifying part 113 which specifies the drainage gate optimum operation pattern according to the water discharge pattern corresponding to is provided.

  In addition, the system 100 includes an output processing unit 114 that outputs information on the identified sand drain gate optimum operation pattern to the output device 106.

  Note that the pattern specifying unit 113 uses information on the upstream rainfall of the hydroelectric power station 5 at the time of actual water discharge as a rainfall / water discharge pattern table that defines the relationship between the upstream rainfall of the hydroelectric power station 5 and the water discharge pattern. By checking 153, it is preferable to estimate the water discharge pattern at the time of the actual water discharge and specify the drainage gate optimum operation pattern according to this water discharge pattern.

  In addition, each of the functional units 110 to 114 in the system 100 shown so far may be realized as a program stored in an appropriate storage device such as a memory such as a RAM or an HDD (Hard Disk Drive), or realized as hardware. You may do that. When each functional unit is realized as a program, the CPU 104 reads the corresponding program from the storage device 101 to the RAM 103 and executes it in accordance with the program execution.

  The network 160 is not limited to the Internet, LAN, ATM line, dedicated line, WAN (Wide Area Network), power line network, wireless network, public line network, mobile phone network, serial interface communication line, etc. A network can also be adopted. If a virtual private network technology such as VPN (Virtual Private Network) is used, communication with improved security is established when the Internet is adopted. The serial interface refers to an interface for connecting to an external device by serial transmission that sequentially transmits data bit by bit using a single signal line, and RS-232C, RS-422, IrDA, USB, IEEE 1394, fiber channel, etc. can be assumed. Alternatively, in order to provide measurement data from the rain gauge 200 to the system 100, an operator inputs the measurement data via the input device 105 of the system 100 based on the measurement data output from the rain gauge 200. Thereby, the system 100 may acquire the measurement data.

--- Database structure ---
Next, the structure of a database that can be used by the system 100 according to the present embodiment will be described. FIG. 2 is a diagram showing data structure examples of (a) the correspondence database 150, (b) the program database 151, (c) the attribute database 152, and (d) the rainwater discharge pattern table 153 in the present embodiment.

  The correspondence database 150 is a database that stores a table 125 that defines the correspondence between the water discharge pattern and the drainage gate optimum operation pattern. The correspondence database 150 is a collection of records in which information such as a water discharge pattern, a sand drain gate optimum operation pattern, and a table file are associated with each other using, for example, a table ID as a key.

  The program database 151 is a database for storing a numerical analysis program used in the waste sand gate operation method. The program database 151 is an aggregate of records in which program files are associated with each other using, for example, program names as keys.

  The attribute database 152 is a database that stores information on past water discharge patterns and downstream water level fluctuations in the hydroelectric power station 5 that the numerical analysis program uses for analysis processing. The attribute database 152 is a collection of records in which information such as a water discharge pattern and downstream water level fluctuation is associated with the hydropower station ID as a key.

  Further, the rainwater discharge pattern table 153 is a table that defines the relationship between the upstream rainfall of the hydroelectric power station 5 and the water discharge pattern. This rainfall / water discharge pattern table 153 is a set of records in which, for example, rain pattern IDs are associated with IDs of water discharge patterns.

---- Execution procedure example of waste sand gate operation method 1 ---
Hereinafter, the actual procedure of the sand removal gate operation method in the present embodiment will be described with reference to the drawings. First, an actual example of the waste sand gate operation method as a construction method in which the results of processing of an arithmetic terminal such as a computer are utilized and the judgment processing steps by humans are linked to each other will be described.

  FIG. 3 is a diagram showing a processing procedure example 1 of the sand discharge gate operation method in the present embodiment. Here, first, a worker or the like starts the numerical analysis program on a computer, and in this numerical analysis program, the relationship between the past water discharge pattern of the hydroelectric power plant 5 and the downstream water level fluctuation of the hydroelectric power plant (the attribute described above). On the condition of the database 152), a numerical analysis process is executed to estimate the amount of sediment in the water area near the sand discharge gate for each operation pattern of the sand discharge gate (s100). In this process, the numerical analysis program acquires data on the amount of sediment in each drainage gate operation pattern with respect to fluctuations in the downstream water level of each water discharge pattern (s101). Steps s100 and s101 are history analysis steps.

  In addition, the operation pattern of the sand removal gate 10 assumes the opening / closing timing, opening / closing time, and opening degree of a gate as an element, respectively, and assumes the combination which changed these elements as a pattern. In the numerical analysis process, a model can be assumed in which a mesh is set in the water area including the intake dam 6 and the sand removal gate 10 and necessary analysis is performed with each element constituting the mesh as a minimum analysis unit. . The numerical analysis program is a program for simulating how the amount of sediment deposition changes under these conditions with each condition (water discharge amount, downstream water level fluctuation) as an input condition.

  Next, based on the collected sediment volume data for each drainage gate operation pattern with respect to the downstream water level fluctuation of each of the obtained water discharge patterns, the optimal drainage gate where the downstream water level fluctuation is below a predetermined standard and the sediment volume is minimized. An operation pattern is specified for each water discharge pattern (s102). This work may be performed by an operator, but is preferably performed by a computer having a program for realizing the work.

  In this way, the correspondence table 125 shown in FIG. 2 is obtained (s103). This correspondence table 125 is a correspondence table between the water discharge pattern and the drainage gate optimum operation pattern. Steps s102 and s103 are the correspondence table creation process.

  Then, at the time of actual water discharge of the hydroelectric power plant, upstream rainfall data as water discharge information at the time of the water discharge is obtained from the rain gauge 200 via the network 160 (s104), and this rain data is obtained from the rain water discharge. By collating with the pattern table 153, the water discharge pattern at the time of the actual water discharge is estimated (s105). The water discharge pattern estimated here is further collated with the correspondence table 125 in the correspondence database 150 of the hard disk drive 101 (s106), and the drainage gate optimum operation pattern corresponding to the water discharge pattern corresponding to the water discharge is specified ( s107). Such work may be performed by a worker, or may be executed by a computer having a program for realizing the work.

  The information on the optimum operation pattern of the sand discharge gate thus identified is output to, for example, the output device 106 and notified to the person in charge of the work (s108). The worker in charge who has obtained the information about the optimum operation pattern of the sand removal gate executes the operation processing of the sand removal gate along the optimum operation pattern of the sand removal gate (s109). Steps s104 to s109 are optimum pattern specifying steps. It is assumed that the system 100 sends the sand drain gate optimum operation pattern data as a gate opening / closing command to a computer device that performs the gate sand gate opening / closing control to automate the sand sand gate optimum operation. Also good.

---- Execution procedure example of waste sand gate operation method 2 ---
Next, an example in which the sand removal gate operation system 100 performs the processing of the sand removal gate operation method independently will be described. FIG. 4 is a diagram showing a processing procedure example 2 of the sand removal gate operation method in the present embodiment. In the case of this example, various operations corresponding to the sand discharge gate operation method are realized by a program that the system 100 reads into the RAM 103 and executes. The program is composed of codes for performing various operations described below.

  In this flow, the history acquisition unit 110 of the system 100 reads information on past water discharge patterns and downstream water level fluctuations from the attribute database 152 of the hard disk drive 101 that is the storage device, and stores it in the RAM 103 that is a memory (s200). ).

  Next, the analysis unit 111 of the system 100 reads out the numerical analysis program from the program database 151 of the hard disk drive 101 to the RAM 103, and uses the past water discharge pattern and information on the downstream water level fluctuation in the RAM 103 as a condition. (S201), the sediment volume in the water area near the drainage gate is estimated for each operation pattern of the drainage gate, and the sediment volume for each drainage gate operation pattern with respect to the downstream water level fluctuation of each discharge pattern. Data is acquired and stored in the RAM 103 (s202).

  Further, the table creation unit 112 of the system 100 reads out data of the sediment volume for each drainage gate operation pattern with respect to the downstream water level fluctuation of each water discharge pattern from the RAM 103 (s203), and based on this data, the downstream water level A drainage gate optimum operation pattern in which the fluctuation is below a predetermined standard and the amount of sedimentary sediment is minimized is identified for each water discharge pattern (s204), and a correspondence table 125 of the water discharge pattern and the drainage gate optimum operation pattern is created, The data is stored in the RAM 103 or the hard disk drive 101 (s205).

  Next, the pattern specifying unit 113 of the system 100 acquires the water discharge information at the time of water discharge from the input device 105 or the rain gauge 200 at the time of actual water discharge of the hydroelectric power station 5 (s206). The correspondence table 125 in the RAM 103 is collated, and the optimum sand drainage operation pattern corresponding to the water discharge pattern corresponding to the water discharge is specified (s207).

  The pattern specifying unit 113 estimates the water discharge pattern at the time of the actual water discharge by collating the information on the upstream rainfall of the hydroelectric power station 5 at the time of the actual water discharge with the rain water discharge pattern table 153. It is preferable to specify the optimum operation pattern for the sand discharge gate according to the water discharge pattern.

  The output processing unit 114 of the system 100 outputs information on the identified sand drainage gate optimum operation pattern to the output device 106 (s208), and ends the process.

  ADVANTAGE OF THE INVENTION According to this invention, the sand discharge gate operation which minimizes the sediment accumulation amount for every water discharge pattern is attained, respond | corresponding to a downstream water level fluctuation | variation restriction | limiting.

  As mentioned above, although embodiment of this invention was described concretely based on the embodiment, it is not limited to this and can be variously changed in the range which does not deviate from the summary.

It is a network block diagram including the sand discharge gate operation system of this embodiment. It is a figure which shows each data structure example of (a) correspondence database, (b) program database, and (c) attribute database in this embodiment.

It is a figure which shows each data structure example of (a), (b).
It is a figure which shows the process sequence example 1 of the sand discharge gate operation method in this embodiment. It is a figure which shows the processing procedure example 2 of the sand discharge gate operation method in this embodiment.

Explanation of symbols

5 Inflow type hydroelectric power plant 6 Intake dam 7 Sediment 10 Sedimentation gate 100 Sedimentation gate operation system 101 HDD (Hard Disk Drive)
102 program 103 RAM (memory)
104 CPU (arithmetic unit)
105 Input interface (input device)
106 Output interface (output device)
107 NIC (Network Interface Card)
108 Flash ROM
109 Bridge 110 History acquisition unit 111 Analysis unit 112 Table creation unit 113 Pattern identification unit 114 Output processing unit 118 OS
120 BIOS
125 Table 150 Correspondence relation database 151 Program database 152 Attribute database 153 Rainfall water discharge pattern table 160 Network 200 Rain gauge

Claims (4)

A drainage gate operation method in a flow-type hydroelectric power plant,
Numerical analysis processing for estimating the sediment volume in the water area near the drainage gate for each drainage gate operation pattern on the condition of the relationship between the past water discharge pattern of the hydropower plant and the downstream water level fluctuation of the hydropower plant And a history analysis process for acquiring sediment sediment data for each drainage gate operation pattern for downstream water level fluctuation of each flood pattern,
Based on the data of sediment sediment volume for each drainage gate operation pattern with respect to the downstream water level fluctuation of each of the obtained flooding patterns, the optimal drainage gate operation pattern that minimizes the sediment volume with the downstream water level fluctuation below the predetermined standard. A correspondence table creation process that identifies each flood pattern and creates a correspondence table between the flood pattern and the sand drainage gate optimum operation pattern,
At the time of actual flooding of the hydroelectric power plant, the flooding information at the time of flooding is collated with the correspondence table, the optimum drainage gate operation pattern corresponding to the flooding pattern corresponding to the flooding is specified, and this drainage gate optimum operation Optimal pattern identification process to execute the operation of waste sand gate based on the pattern,
An operation method for waste sand gates. In the optimum pattern specifying step,
The information on the upstream rainfall of the hydroelectric power plant at the time of actual water discharge is collated with a table that defines the relationship between the upstream rainfall of the hydroelectric power plant and the water discharge pattern, so that the water discharge pattern at the time of actual water discharge And identify the optimum sand drainage operation pattern according to this flood pattern,
The method for operating a sand discharge gate according to claim 1. A system that operates a sand discharge gate in a flow-type hydroelectric power plant,
An arithmetic device, a memory, an input device, an output device, a storage device that stores a numerical analysis program of sediment accumulation amount in a water channel, and a storage device that stores information on past water discharge patterns and downstream water level fluctuations. ,
The arithmetic unit is
From the storage device, read the information of the past water discharge pattern and the downstream water level fluctuation, store in the memory,
The numerical analysis program is read from the storage device into a memory and executed on the condition of the past water discharge pattern and the downstream water level fluctuation information in the memory, and the amount of sediment in the water area near the sand discharge gate is discharged. Estimate for each operation pattern of sand gates, acquire sediment sediment data for each drainage gate operation pattern for downstream water level fluctuations of each water discharge pattern, store it in memory,
From the memory, data of sediment sediment volume for each drainage gate operation pattern with respect to downstream water level fluctuations of each discharge pattern is read, and based on this data, the sand sediments with the minimum sediment sediment volume when the downstream water level fluctuation is below a predetermined standard. The gate optimal operation pattern is specified for each water discharge pattern, a correspondence table between the water discharge pattern and the drainage gate optimal operation pattern is created, stored in the memory,
At the time of actual water discharge of the hydroelectric power plant, the water discharge information at the time of water discharge is obtained from the input device, the water discharge information is collated with the correspondence table in the memory, and the sand discharge according to the water discharge pattern corresponding to the water discharge Identify the optimal operation pattern
Output the information of the specified sand drainage optimum operation pattern to the output device,
A sand drain gate operation system characterized by that. An arithmetic device, a memory, an input device, an output device, a storage device that stores a numerical analysis program of sediment accumulation amount in a water channel, and a storage device that stores information on past water discharge patterns and downstream water level fluctuations. more computer, a program for outputting the optimal operational pattern for operation sediment Gate in-river hydro power plants,
In the computer,
Reading past water discharge patterns and downstream water level fluctuation information from the storage device, and storing the information in a memory;
The numerical analysis program is read from the storage device into a memory and executed on the condition of the past water discharge pattern and the downstream water level fluctuation information in the memory, and the amount of sediment in the water area near the sand discharge gate is discharged. Estimating for each sand gate operation pattern, and acquiring and storing the accumulated sediment amount data for each drainage gate operation pattern for the downstream water level fluctuation of each water discharge pattern;
From the memory, data of sediment sediment volume for each drainage gate operation pattern with respect to downstream water level fluctuations of each discharge pattern is read, and based on this data, the sand sediments with the minimum sediment sediment volume when the downstream water level fluctuation is below a predetermined standard. Identifying the gate optimum operation pattern for each water discharge pattern, creating a correspondence table between the water discharge pattern and the drainage gate optimum operation pattern, and storing in a memory;
At the time of actual water discharge of the hydroelectric power plant, the water discharge information at the time of water discharge is obtained from the input device, the water discharge information is collated with the correspondence table in the memory, and the sand discharge according to the water discharge pattern corresponding to the water discharge Identifying the optimal operation pattern
Outputting the information of the identified sand drainage gate optimum operation pattern to an output device;
A drainage gate operation program to execute.

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