A water level monitoring system based on floodgate control
By introducing upstream and downstream water level monitoring modules and gate status analysis into the water level monitoring system, the problem of inaccurate flood discharge decision-making in existing technologies has been solved, and safe and efficient flood discharge and ecological protection of the reservoir have been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SOUTH TO NORTH WATER SHANDONG LINE CORP
- Filing Date
- 2025-04-21
- Publication Date
- 2026-06-05
AI Technical Summary
Existing technologies fail to effectively correlate upstream and downstream water level trends in water level monitoring systems, leading to inaccurate flood discharge decisions. This could result in ecological damage or the risk of reservoir overflow. Furthermore, the failure to monitor gate status in real time increases the safety risks associated with opening gates for flood discharge.
By employing upstream water level monitoring modules, downstream water level monitoring modules, gate discharge monitoring modules, and early warning terminals, and analyzing water level data and gate status, the system enables prediction of future trends in upstream water levels and precise control of gate opening width. It also provides decision support by combining safety data from the database.
It has achieved precise control of reservoir flood discharge, ensured ecological security, avoided ecological losses caused by insufficient or excessive flood discharge, improved flood discharge efficiency and safety, and ensured the rational allocation and utilization of water resources.
Smart Images
Figure CN120371033B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of floodgate control technology, specifically to a water level monitoring system based on floodgate control. Background Technology
[0002] With the arrival of the rainy season, water level monitoring becomes particularly important. Real-time monitoring of water levels enables timely flood discharge to ensure ecological security. By monitoring the development trend of upstream water levels, it is possible to determine whether the reservoir needs to release floodwaters, thus making accurate decisions. At the same time, from the perspective of downstream water level monitoring, multiple considerations are taken into account when releasing floodwaters to ensure safe and secure flood discharge and reduce the risk of flooding.
[0003] Existing technology, such as the invention patent application CN118819009A, discloses a water conservancy gate monitoring system and its monitoring method, belonging to the field of water conservancy monitoring technology. It includes a monitoring module, a controller, a monitoring platform, an analysis module, a drive module, and an early warning module. The analysis module analyzes the warning water level height and gate opening status. When the water level reaches the warning water level height or the gate lifting height is abnormal, the controller activates the early warning module to issue an early warning. During flood discharge, the controller uses control commands to cause the drive module to open the corresponding gate. The monitoring module of this application effectively monitors the gate opening status and water level, thereby achieving real-time water level monitoring and improving flood control reliability. The analysis module can perform real-time analysis of the monitored data, and when the monitoring data is abnormal, the early warning module issues a timely warning, enabling timely response from management personnel.
[0004] The above-mentioned solutions have the following technical problems: The invention mainly provides early warning when the water level reaches the warning level or the gate's lifting height is abnormal, thereby improving the reliability of flood control. However, it does not monitor the trend of water level development at the upstream end of the gate, and therefore does not perform progressive correlation analysis between the upstream reservoir and the downstream end. It cannot effectively correlate the flood discharge measures taken when floods occur at the upstream end of the reservoir and the current reservoir cannot accommodate them. This can lead to situations where there is excessive or insufficient flood discharge, resulting in the risk of downstream ecological damage or reservoir overflow. Ecological safety cannot be effectively guaranteed, and there is a potential for safety losses. At the same time, it does not analyze the gate when it is opened for flood discharge, making it impossible to know whether the gate is in a safe state during flood discharge, increasing the safety risks of opening the gate for flood discharge. Summary of the Invention
[0005] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a water level monitoring system based on floodgate control.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a water level monitoring system based on flood discharge gate control, including: an upstream water level monitoring module, used to monitor the water level corresponding to the upstream end of the reservoir, obtain the basic data of the water level corresponding to the upstream end of the reservoir, analyze and obtain the future coefficient of the water level corresponding to the upstream end of the reservoir, and determine whether the reservoir needs to open the gate for flood discharge. If the reservoir needs to open the gate for flood discharge, the opening width of the flood discharge gate corresponding to the reservoir is analyzed based on the water level monitored at the downstream end of the reservoir.
[0007] The downstream water level monitoring module is used to obtain the status data of the downstream end of the reservoir based on the water level monitored at the downstream end of the reservoir when there is no flood at the upstream end of the reservoir, and then analyze and obtain the gate opening width under the corresponding development at the downstream end of the reservoir.
[0008] The gate discharge monitoring module is used to monitor the gate data of the reservoir gate during the first flood discharge, and then analyze the basic state of the reservoir gate during the flood discharge to determine whether it is necessary to adjust the gate opening width for the flood discharge, and analyze the required number of auxiliary channels after the flood discharge gate is adjusted.
[0009] The early warning terminal is used to provide early warnings when a flood is expected upstream or when the reservoir gates are discharging water and the basic condition is dangerous.
[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention provides a water level monitoring system based on flood discharge gate control. By monitoring the water level at the upstream end of the reservoir, the system analyzes the future water level coefficient at the upstream end of the reservoir to determine whether the reservoir needs to open the gate for flood discharge. It also analyzes the opening width of the flood discharge gate corresponding to the reservoir. Furthermore, when there is no flood at the upstream end of the reservoir, the system analyzes the opening width of the gate at the downstream end of the reservoir under the corresponding development. At the same time, it understands the state of the reservoir gate during flood discharge and analyzes whether to adjust it, thereby achieving safe reservoir flood discharge, ensuring ecological security, achieving efficient and accurate flood discharge, avoiding the current situation of excessive dam water level due to insufficient flood discharge, which would cause dam pressure, and further reducing the situation of excessive losses in downstream areas due to excessive flood discharge. At the same time, it ensures that the surrounding development receives effective water source support, and achieves rational allocation and efficient utilization of water resources.
[0011] 2. Monitor the water level at the upstream end of the reservoir and obtain basic data on the water level at the upstream end. Analyze the future water level coefficient at the upstream end of the reservoir and determine whether the reservoir needs to release floodwater. If the reservoir needs to release floodwater, analyze the opening width of the floodgates based on the water level monitored at the downstream end of the reservoir. This will enable efficient early warning of the upstream water level and effective connection during flood release, thereby making accurate and effective decisions on flood release and gate opening to ensure ecological safety during flood release.
[0012] 3. When no flood occurs at the upstream end of the reservoir, based on the water level monitored at the downstream end of the reservoir, the state data of the corresponding development at the downstream end of the reservoir is obtained, and the gate opening width of the corresponding development at the downstream end of the reservoir is analyzed to ensure that the surrounding development receives effective water source support, realize the rational allocation and efficient utilization of water resources, and improve the benefits of ecological development.
[0013] 4. Monitor the gate data of the reservoir during the first flood discharge, and then analyze the basic state of the reservoir gate during the flood discharge to determine whether it is necessary to adjust the gate opening width for the flood discharge. Analyze the required number of auxiliary channels after the flood discharge gate is adjusted to ensure the safety of the gate during flood discharge, avoid greater risk of dam failure, and improve flood discharge efficiency. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the system module structure connection of the present invention. Detailed Implementation
[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0017] Please see Figure 1 As shown, a water level monitoring system based on floodgate control includes an upstream water level monitoring module, a downstream water level monitoring module, a gate discharge monitoring module, an early warning terminal, and a database.
[0018] The upstream water level monitoring module is connected to the gate discharge monitoring module, the early warning terminal, and the database, respectively. The downstream water level monitoring module is connected to the gate discharge monitoring module and the database, respectively. The gate discharge monitoring module is connected to the early warning terminal and the database, respectively.
[0019] The upstream water level monitoring module is used to monitor the water level at the upstream end of the reservoir, obtain the basic data of the water level at the upstream end of the reservoir, analyze and obtain the future coefficient of the water level at the upstream end of the reservoir, and determine whether the reservoir needs to open the gate for flood discharge. If the reservoir needs to open the gate for flood discharge, the opening width of the flood discharge gate is obtained based on the water level monitored at the downstream end of the reservoir.
[0020] It should be noted that the various water level monitoring devices include, but are not limited to, pressure water level sensors, ultrasonic water level sensors, radar water level sensors, water level change rate sensors, electromagnetic flow velocity sensors, and propeller flow velocity sensors; among them, pressure water level sensors, water level change rate sensors, and electromagnetic flow velocity sensors are used to obtain basic data on the corresponding water level at the upstream end of the reservoir.
[0021] As an optional implementation, the analysis obtains the future water level coefficient corresponding to the upstream end of the reservoir. The specific analysis process is as follows: Based on the water level monitoring devices placed at the upstream end of the reservoir, basic data of the water level corresponding to the upstream end of the reservoir are obtained, including water level, water level rise, and flow velocity. The safe water level range, safe water level rise range, and safe flow velocity range corresponding to the upstream end of the reservoir are extracted from the database, and then the future water level coefficient corresponding to the upstream end of the reservoir is evaluated. The calculation formula is as follows: K m K' is the m-th basic data point corresponding to the water level at the upstream end of the reservoir. m Let m be the safe interval for the m-th basic data point of the water level at the upstream end of the reservoir, where m ∈ [1,3] and m is the number of the basic data point.
[0022] It should be noted that the safe water level range, safe water level rise range, and safe flow velocity range for the upstream end of the reservoir are set by professional water conservancy personnel. The safe water level range for the upstream end of the reservoir is a reference value for determining whether the current trend of the water level at the upstream end of the reservoir is safe. The safe water level rise range and the safe flow velocity range serve the same purpose, so they will not be elaborated on further.
[0023] If the future water level coefficient at the upstream end of the reservoir is 1, it is determined that no flood will occur at the upstream end. The flood discharge gate opening of the reservoir will be further analyzed based on the water level monitored at the downstream end. If the future water level coefficient at the upstream end of the reservoir is -1, it is determined that a flood will occur at the upstream end, and the reservoir will be monitored.
[0024] As an optional implementation method, the specific process for determining whether a reservoir needs to release floodwater is as follows: the future water level coefficient corresponding to the upstream end of the reservoir is compared with the water level coefficient corresponding to each reference capacity of the reservoir stored in the database. If the future water level coefficient corresponding to the upstream end of the reservoir is equal to the water level coefficient corresponding to a certain reference capacity of the reservoir stored in the database, then the reference capacity is taken as the required capacity space of the future water level coefficient corresponding to the upstream end of the reservoir.
[0025] The required capacity space of the future water level coefficient at the upstream end of the reservoir is compared with the remaining capacity space of the corresponding water storage. If the required capacity space of the future water level coefficient at the upstream end of the reservoir is greater than or equal to the remaining capacity space of the corresponding water storage, it is determined that the reservoir cannot accommodate the water and the gates need to be opened for flood discharge. If the required capacity space of the future water level coefficient at the upstream end of the reservoir is less than the remaining capacity space of the corresponding water storage, it is determined that the reservoir can accommodate the water and there is no need to open the gates for flood discharge. Then, based on the development needs of the downstream section of the reservoir, a further analysis is conducted on whether the reservoir needs to discharge floodwater.
[0026] As an optional implementation method, the analysis obtains the gate opening width for flood discharge from the reservoir. The specific analysis process is as follows: When floods occur at the upstream end of the reservoir and the reservoir cannot accommodate them, the basic information corresponding to the downstream end of the reservoir is obtained, including the river channel carrying capacity, dam height, and pumping station drainage speed. The river channel carrying capacity corresponding to the downstream end of the reservoir is compared with the river channel carrying capacity corresponding to each reference safe impact level of flood discharge stored in the database. At the same time, the dam height and pumping station drainage speed corresponding to the downstream end of the reservoir are also compared with the dam height and pumping station drainage speed corresponding to each reference safe impact level of flood discharge stored in the database. If the river channel carrying capacity corresponding to the downstream end of the reservoir is the same as the river channel carrying capacity corresponding to a certain reference safe impact level of flood discharge stored in the database, then that reference safe impact level is used as the reference impact level for the downstream end. If the dam height and pumping station drainage speed corresponding to the downstream end of the reservoir are the same as the dam height and pumping station drainage speed corresponding to a certain reference safe impact level of flood discharge stored in the database, then that reference safe impact level is used as the reference impact level for the downstream end. This is how the safety impact levels for the downstream end of the reservoir are obtained.
[0027] It should be noted that the basic information corresponding to the downstream end of the reservoir is obtained from the database. The discharge capacity of the river channel can be monitored by a Doppler ultrasonic flow meter; the height of the dam can be measured by a level or total station; and the drainage speed of the pumping station can be monitored by an electromagnetic flow meter or an ultrasonic flow meter.
[0028] It should be noted that each reference safety impact level is set by professional water conservancy personnel, and each reference safety impact level is the upper limit of the safe impact generated when the downstream end of the reservoir faces the discharge.
[0029] Arrange the safety impact levels in ascending order, and use the gate opening width stored in the database corresponding to the first-ranked safety impact level as the gate opening width during reservoir flood discharge. Alternatively, calculate the average gate opening width based on the gate opening widths stored in the database corresponding to each safety impact level, and use the average gate opening width as the gate opening width for reservoir flood discharge.
[0030] The reference gate opening widths for historical reservoir flood discharge are obtained from the database. The opening width of the top-ranked gate and the average gate opening width are compared with the reference gate opening widths. If the opening width of the top-ranked gate is close to the reference gate opening width, it is taken as the gate opening width for reservoir flood discharge. If the opening width of the average gate is close to the reference gate opening width, it is taken as the gate opening width for reservoir flood discharge. The gate opening width for reservoir flood discharge is obtained by this analysis.
[0031] It should be noted that when floods occurred upstream of the reservoir and the reservoir capacity was insufficient, the opening widths of the corresponding historical gates during flood discharge were obtained from the database. The average historical gate opening width was calculated and used as the reference gate opening width.
[0032] It should also be noted that, for example, if the reference gate opening width is 7, the gate opening width ranked first is 5, and the average gate opening width is 6, then 6 is closer to 7 than 5. Therefore, the average gate opening width is taken as the gate opening width for flood discharge in the reservoir.
[0033] The system monitors the water level at the upstream end of the reservoir and obtains basic data on the water level at the upstream end. It analyzes the future water level coefficient at the upstream end of the reservoir and determines whether the reservoir needs to release floodwater. If the reservoir needs to release floodwater, it analyzes the opening width of the floodgates at the downstream end of the reservoir based on the water level monitored at the downstream end. This enables efficient early warning of the upstream water level and effective coordination during flood release, thereby making accurate and effective decisions on flood release and gate opening to ensure ecological safety during flood release.
[0034] The downstream water level monitoring module is used to obtain the status data of the downstream end of the reservoir based on the water level monitored at the downstream end of the reservoir when there is no flood at the upstream end of the reservoir, and then analyze and obtain the gate opening width under the corresponding development at the downstream end of the reservoir.
[0035] It should be noted that the status data of the downstream end of the reservoir under the corresponding development is obtained from the database. The waterway draft of the downstream end of the reservoir under the corresponding development can be obtained by echo sounder, and the shipping flow of the downstream end of the reservoir under the corresponding development can be obtained by radar sensor.
[0036] As an optional implementation, the status data includes channel draft and shipping flow.
[0037] As an optional implementation method, the analysis obtains the gate opening width corresponding to the development needs of the downstream end of the reservoir. The specific analysis process is as follows: Based on the navigation level corresponding to the development of the downstream end of the reservoir, the reference required water level of the navigation level corresponding to the downstream end of the reservoir is obtained from the database. Based on the water level monitored at the downstream end of the reservoir, the two are compared to obtain the water level difference corresponding to the downstream end of the reservoir. The water level difference corresponding to the downstream end of the reservoir is compared with the water level difference corresponding to each water volume stored in the database. If the water level difference corresponding to the downstream end of the reservoir is the same as the water level difference corresponding to a certain water volume stored in the database, then that water volume is taken as the water volume required for flood discharge at the downstream end of the reservoir.
[0038] The channel draft corresponding to the downstream end of the reservoir is compared with the channel draft corresponding to each reference flood discharge force stored in the database. At the same time, the shipping flow corresponding to the downstream end of the reservoir is also compared with the shipping flow corresponding to each flood discharge force stored in the database. If the channel draft corresponding to the downstream end of the reservoir is the same as the channel draft corresponding to a certain reference flood discharge force stored in the database, and the shipping flow corresponding to the downstream end is the same as the shipping flow corresponding to that flood discharge force stored in the database, then that flood discharge force is taken as the reference flood discharge force for safety at the downstream end of the reservoir. The gate opening width corresponding to that flood discharge force is obtained from the database and used as the gate opening width for development at the downstream end of the reservoir.
[0039] When no flood occurs at the upstream end of the reservoir, the state data of the downstream end of the reservoir under the corresponding development is obtained based on the water level monitored at the downstream end of the reservoir. The gate opening width under the corresponding development at the downstream end of the reservoir is analyzed to ensure that the surrounding development receives effective water source support, realize the rational allocation and efficient utilization of water resources, and improve the benefits of ecological development.
[0040] The gate discharge monitoring module is used to monitor the gate data of the reservoir gate during the first flood discharge, and then analyze the basic state of the reservoir gate during the flood discharge to determine whether it is necessary to adjust the gate opening width for the flood discharge, and analyze the required number of auxiliary channels after the flood discharge gate is adjusted.
[0041] It should be noted that a pressure sensor was used to obtain the water jet force corresponding to the first flood discharge of the reservoir gate; and a crack width measuring instrument was used to obtain the dam crack width and gate crack width corresponding to the first flood discharge of the reservoir gate.
[0042] As an optional implementation, the analysis obtains the basic state of the reservoir gate during flood discharge and determines whether the gate opening width needs to be adjusted. The specific analysis process is as follows: Obtain the gate data corresponding to the first flood discharge, including water scour force, dam crack width, and gate crack width. Import the gate data corresponding to the first flood discharge into the gate state evaluation model, and then analyze to obtain the gate state value corresponding to the flood discharge. If the gate state value is 1, the gate state is determined to be normal, and there is no need to adjust the gate opening width. If the gate state value is 0, the gate state is determined to be abnormal, and the gate opening width needs to be adjusted.
[0043] As an optional implementation, the analysis obtains the state value of the gate during flood discharge. The specific analysis process is as follows: using the gate state assessment model: Where ZM is the state value of the gate during flood discharge, C' is the set reference water jet force, G' is the set reference dam crack width, D' is the set reference gate crack width, C is the water jet force corresponding to the reservoir gate during the first flood discharge, G is the dam crack width corresponding to the reservoir gate during the first flood discharge, D is the gate crack width corresponding to the reservoir gate during the first flood discharge, and Y is the set reference gate state value.
[0044] It should be noted that reference water jet force, reference dam crack width, reference gate crack width, and reference gate status value are set by professional water conservancy personnel. The reference water jet force is a reference value used to determine whether the water jet force experienced by the reservoir gate during the first flood discharge is normal. The reference dam crack width is a reference value used to determine whether the dam corresponding to the reservoir gate is safe and normal during the first flood discharge. The reference gate crack width is a reference value used to determine whether the reservoir gate is safe and normal during the first flood discharge. The reference gate status value is a reference value used to determine whether the reservoir gate is in normal condition during the first flood discharge.
[0045] As an optional implementation method, the analysis obtains the required number of auxiliary channels after the flood discharge gate is adjusted. The specific analysis process is as follows: When the required opening width of the gate for flood discharge is adjusted, the gate's original opening width is adjusted by decreasing it one by one according to the minimum base value of the gate's opening width to obtain the adjusted gate opening width. At the same time, based on the water volume required to be reached at the downstream end of the reservoir within a preset time, and based on the output water volume discharged within the preset requirement time based on the adjusted gate opening width, the difference water volume is obtained. The output water volume of the auxiliary channels corresponding to the preset requirement time stored in the database is obtained. The number of auxiliary channels is continuously added up. When the output water volume corresponding to the added auxiliary channels is greater than or equal to the difference water volume, the required number of auxiliary channels after the flood discharge gate is adjusted is obtained.
[0046] It should be noted that the gate's original opening width is adjusted by decreasing it one by one based on the minimum base of the gate's opening width: for example, if the original opening width of the current gate is 8, 8 can be divided into 2 to the power of 4, and 2 is the minimum base of the original opening width of the current gate.
[0047] By monitoring the gate data of the reservoir during the first flood discharge, the basic state of the reservoir gate during the flood discharge can be obtained, and it can be determined whether the gate opening width needs to be adjusted. The number of auxiliary channels required after the flood discharge gate is adjusted can be determined to ensure the safety of the gate during flood discharge, avoid greater risk of dam failure, and improve flood discharge efficiency.
[0048] The database is used to store the water level, basic data, water level safety range, water level rise safety range, flow velocity safety range, water level safety factor range, water level factor, remaining capacity space, basic information, status data and gate data corresponding to the upstream end of the reservoir.
[0049] The early warning terminal is used to provide early warnings when there is a flood upstream or when the reservoir gates are discharging water and the basic condition is dangerous.
[0050] This invention, through monitoring the water level at the upstream end of a reservoir, analyzes the future water level coefficient at the upstream end to determine whether the reservoir needs to release floodwaters. It also analyzes the opening width of the floodgates for flood discharge. Furthermore, when no flood occurs at the upstream end, it analyzes the opening width of the floodgates at the downstream end under the corresponding development conditions. Simultaneously, it understands the state of the reservoir gates during flood discharge and analyzes whether adjustments are needed. This achieves safe reservoir flood discharge, ensures ecological security, and enables efficient and precise flood discharge. It avoids the current situation where insufficient flood discharge leads to excessively high dam water levels and thus heavy dam pressure. It also further reduces the possibility of excessive losses in downstream areas due to excessive flood discharge, while ensuring effective water source support for surrounding development, achieving rational allocation and efficient utilization of water resources.
[0051] The above description is merely an example and illustration of the concept of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the concept of the invention or exceed the scope defined in this specification, they should all fall within the protection scope of the present invention.
Claims
1. A water level monitoring system based on floodgate control, characterized in that, include: The upstream water level monitoring module is used to monitor the water level at the upstream end of the reservoir, obtain the basic data of the water level at the upstream end of the reservoir, analyze and obtain the future coefficient of the water level at the upstream end of the reservoir, and determine whether the reservoir needs to open the gate to release floodwater. If the reservoir needs to open the gate to release floodwater, the opening width of the floodgate corresponding to the flood discharge is analyzed based on the water level monitored at the downstream end of the reservoir. The analysis yields the future water level coefficient at the upstream end of the reservoir. The specific analysis process is as follows: Based on the water level monitoring equipment placed at the upstream end of the reservoir, basic data on the corresponding water level at the upstream end of the reservoir are obtained, including water level, water level rise, and flow velocity. The safe water level range, safe water level rise range, and safe flow velocity range corresponding to the upstream end of the reservoir are extracted from the database. Then, the future water level coefficient corresponding to the upstream end of the reservoir is evaluated, and its calculation formula is as follows: K m K' is the m-th basic data point corresponding to the water level at the upstream end of the reservoir. m Let m be the safe interval for the m-th basic data point of the water level at the upstream end of the reservoir, where m ∈ [1,3] and m is the number of the basic data point. If the future water level coefficient corresponding to the upstream end of the reservoir is 1, it is determined that no flood will occur at the upstream end. The corresponding flood discharge gate opening of the reservoir will be further analyzed based on the water level monitored at the downstream end. If the future water level coefficient corresponding to the upstream end of the reservoir is -1, it is determined that a flood will occur at the upstream end. The reservoir will then be monitored. The downstream water level monitoring module is used to obtain the status data of the downstream end of the reservoir based on the water level monitored at the downstream end of the reservoir when no flood occurs at the upstream end of the reservoir, and then analyze and obtain the gate opening width under the corresponding development at the downstream end of the reservoir. The gate discharge monitoring module is used to monitor the gate data of the reservoir gate during the first flood discharge, and then analyze the basic state of the reservoir gate during the flood discharge to determine whether it is necessary to adjust the gate opening width for the flood discharge, and analyze the required number of auxiliary channels after the flood discharge gate is adjusted. The early warning terminal is used to provide early warnings when a flood is expected upstream or when the reservoir gates are discharging water and the basic condition is dangerous.
2. The water level monitoring system based on floodgate control as described in claim 1, characterized in that, The specific process for determining whether a reservoir needs to release floodwater is as follows: The future water level coefficient corresponding to the upstream end of the reservoir is compared with the water level coefficient corresponding to each reference capacity of the reservoir stored in the database. If the future water level coefficient corresponding to the upstream end of the reservoir is equal to the water level coefficient corresponding to a certain reference capacity of the reservoir stored in the database, then the reference capacity is used as the demand capacity space of the future water level coefficient corresponding to the upstream end of the reservoir. The required capacity space of the future water level coefficient at the upstream end of the reservoir is compared with the remaining capacity space of the corresponding water storage. If the required capacity space of the future water level coefficient at the upstream end of the reservoir is greater than or equal to the remaining capacity space of the corresponding water storage, it is determined that the reservoir cannot accommodate the water and the gates need to be opened for flood discharge. If the required capacity space of the future water level coefficient at the upstream end of the reservoir is less than the remaining capacity space of the corresponding water storage, it is determined that the reservoir can accommodate the water and there is no need to open the gates for flood discharge. Then, based on the development needs of the downstream section of the reservoir, a further analysis is conducted on whether the reservoir needs to discharge floodwater.
3. The water level monitoring system based on floodgate control as described in claim 2, characterized in that, The analysis yielded the opening width of the reservoir's flood discharge gates. The specific analysis process is as follows: When a flood occurs upstream of a reservoir and the reservoir cannot contain it, the basic information corresponding to the downstream end of the reservoir is obtained, including the river's discharge capacity, dam height, and pumping station drainage rate. The river's discharge capacity at the downstream end of the reservoir is compared with the river's discharge capacity corresponding to each reference safe impact level stored in the database. At the same time, the dam height and pumping station drainage rate at the downstream end of the reservoir are also compared with the dam height and pumping station drainage rate corresponding to each reference safe impact level stored in the database. If the river's discharge capacity at the downstream end of the reservoir is the same as the river's discharge capacity corresponding to a certain reference safe impact level stored in the database, then that reference safe impact level is used as the reference impact level for the downstream end. If the dam height and pumping station drainage rate at the downstream end of the reservoir are the same as the dam height and pumping station drainage rate corresponding to a certain reference safe impact level stored in the database, then that reference safe impact level is used as the reference impact level for the downstream end. This is how the safety impact levels at the downstream end of the reservoir are obtained. Arrange the safety impact levels in order from low to high, and take the gate opening width stored in the database corresponding to the first safety impact level as the gate opening width when the reservoir discharges floodwater. Alternatively, based on the gate opening widths stored in the database corresponding to each safety impact level, calculate the average gate opening width and take the average gate opening width as the gate opening width when the reservoir discharges floodwater. The reference gate opening widths for historical reservoir flood discharge are obtained from the database. The opening width of the top-ranked gate and the average gate opening width are compared with the reference gate opening widths. If the opening width of the top-ranked gate is close to the reference gate opening width, it is taken as the gate opening width for reservoir flood discharge. If the opening width of the average gate is close to the reference gate opening width, it is taken as the gate opening width for reservoir flood discharge. The gate opening width for reservoir flood discharge is obtained by this analysis.
4. The water level monitoring system based on floodgate control as described in claim 1, characterized in that, The status data includes channel draft and shipping volume.
5. A water level monitoring system based on floodgate control as described in claim 4, characterized in that, The analysis yields the gate opening width corresponding to the downstream development needs of the reservoir. The specific analysis process is as follows: Based on the corresponding waterway grade at the downstream end of the reservoir, the reference required water level for the corresponding waterway grade at the downstream end of the reservoir is obtained from the database. Based on the water level monitored at the downstream end of the reservoir, the two are compared to obtain the water level difference at the downstream end of the reservoir. The water level difference at the downstream end of the reservoir is compared with the water level difference corresponding to each water volume stored in the database. If the water level difference at the downstream end of the reservoir is the same as the water level difference corresponding to a certain water volume stored in the database, then that water volume is taken as the water volume required for flood discharge at the downstream end of the reservoir. The channel draft corresponding to the downstream end of the reservoir is compared with the channel draft corresponding to each reference flood discharge force stored in the database. At the same time, the shipping flow corresponding to the downstream end of the reservoir is also compared with the shipping flow corresponding to each flood discharge force stored in the database. If the channel draft corresponding to the downstream end of the reservoir is the same as the channel draft corresponding to a certain reference flood discharge force stored in the database, and the shipping flow corresponding to the downstream end is the same as the shipping flow corresponding to that flood discharge force stored in the database, then that flood discharge force is taken as the reference flood discharge force for safety at the downstream end of the reservoir. The gate opening width corresponding to that flood discharge force is obtained from the database and used as the gate opening width for development at the downstream end of the reservoir.
6. The water level monitoring system based on floodgate control as described in claim 1, characterized in that, The analysis yields the basic state of the reservoir gates during flood discharge, determining whether it is necessary to adjust the gate opening width for flood discharge. The specific analysis process is as follows: Obtain the gate data corresponding to the first flood discharge of the reservoir, including water scour force, dam crack width, and gate crack width. Import the gate data corresponding to the first flood discharge of the reservoir into the gate status assessment model, and then analyze the gate status value corresponding to the flood discharge. If the gate status value corresponding to the flood discharge is 1, the gate status is determined to be normal, and there is no need to adjust the gate opening width corresponding to the flood discharge. If the gate status value corresponding to the flood discharge is 0, the gate status is determined to be abnormal, and the gate opening width corresponding to the flood discharge needs to be adjusted.
7. A water level monitoring system based on floodgate control as described in claim 6, characterized in that, The analysis yielded the state values of the gate during flood discharge. The specific analysis process is as follows: Based on the gate condition assessment model: Where ZM is the state value of the gate during flood discharge, C' is the set reference water jet force, G' is the set reference dam crack width, D' is the set reference gate crack width, C is the water jet force corresponding to the reservoir gate during the first flood discharge, G is the dam crack width corresponding to the reservoir gate during the first flood discharge, D is the gate crack width corresponding to the reservoir gate during the first flood discharge, and Y is the set reference gate state value.
8. The water level monitoring system based on floodgate control as described in claim 1, characterized in that, The analysis yielded the required number of auxiliary channels after the adjustment of the floodgates. The specific analysis process is as follows: When the required opening width of the floodgate for flood discharge is adjusted, the gate's original opening width is adjusted by decreasing it one by one according to the minimum base value of the gate's opening width to obtain the adjusted gate opening width. At the same time, based on the water volume required at the downstream end of the reservoir within a preset time, and the output water volume discharged within the preset demand time based on the adjusted gate opening width, the difference water volume is obtained. The output water volume of the auxiliary channels within the preset demand time stored in the database is obtained. The number of auxiliary channels is continuously added up. When the output water volume corresponding to the added auxiliary channels is greater than or equal to the difference water volume, the required number of auxiliary channels after the flood discharge gate adjustment is obtained.
9. A water level monitoring system based on floodgate control as described in claim 1, characterized in that, It also includes a database, which stores the water level, basic data, water level safety range, water level rise safety range, flow velocity safety range, water level safety factor range, water level coefficient, remaining capacity space, basic information, status data and gate data at the upstream end of the reservoir.