Artificial Seawater Lake in the Coastal Area and Its Water Environment Monitoring and Control System and Control Method

Abstract

The present invention relates to the field of artificial lake water environment protection, and discloses a seawater artificial lake in the coastal area, as well as its water environment monitoring and control system and control method. The seawater artificial lake includes a dam for isolating the peripheral seawater area and the artificial lake area; a cofferdam that divides the artificial lake area into a landscape area and a sedimentation area located between the landscape area and the dam, and the cofferdam is provided with an anti-seepage curtain; a buffer baffle for buffering the seawater impact between adjacent divided areas; a drainage sluice that communicates the artificial lake area with the peripheral seawater area and is used to discharge the water body of the artificial lake area. Based on the seawater level and sediment content in the coastal area, the opening amplitude of the inlet valve is controlled so that the seawater with a lower sediment content in the upper layer of the water body enters the sedimentation area at an appropriate flow rate for water body replenishment, reducing the filtration and seepage pressure of the anti-seepage curtain while ensuring that the sediment content of the water body replenished into the landscape area is low, thereby ensuring the water transparency and aesthetic requirements of the landscape area.

Description

Technical Field

[0001] The present invention relates to the field of artificial lake water environment protection, and particularly to a seawater artificial lake in the coastal area, its water environment monitoring and control system, and control method. Background Art

[0002] An artificial lake is a lake dug out purposefully and plannedly, which is a water conservancy project building generated under a non-natural environment. Artificial lakes are generally used for flood control and water storage, regulating water flow, and can also be used as a landscape and beautiful scenery building. In recent years, people's requirements for the water environment landscape of the coastal waters have gradually increased, and seawater artificial lakes have emerged as the times require. A seawater artificial lake is constructed in the coastal intertidal zone by enclosing the sea and isolating the peripheral water body.

[0003] In the prior art, in order to improve the eutrophication of the artificial lake water area and prevent the outbreak of algae, water body replenishment and exchange are often used to accelerate the water replacement frequency and promote the water body circulation in the artificial lake. In seawater artificial lakes, seawater from the offshore water source is often used for water body replenishment. However, the seawater in the offshore water area has a high sediment content. When the seawater with a high sediment content enters the artificial lake area, it is easy to cause the artificial lake water area to be turbid, reduce the transparency of the artificial lake water, and easily cause a transparency color difference between the water bodies in the artificial lake, affecting the aesthetics. Summary of the Invention

[0004] Aiming at the above deficiencies or defects in the prior art, the present invention provides a seawater artificial lake in the coastal area, its water environment monitoring and control system, and control method, which regulate and select seawater with a low sediment content for water body replenishment based on the water level and sediment content of the seawater in the coastal area, while reducing the seawater filtration pressure and ensuring that the transparency of the artificial lake water body meets the aesthetic requirements.

[0005] In order to achieve the above object, the present invention provides a seawater artificial lake in the coastal area, including:

[0006] A dike for isolating the peripheral seawater area and the artificial lake area. There are several water inlet gateways in the dike that connect the peripheral seawater area and the artificial lake area. The water inlet gateways are distributed along the length direction of the dike. In the water inlet gateway, there is a water inlet gate that controls the start and stop based on the water environment data of the artificial lake area and controls the opening amplitude based on the water level and sediment content data of the peripheral seawater area. The water inlet gate includes a lifting gate and a translation gate;

[0007] A cofferdam is located in the artificial lake area and divides the artificial lake area into a landscape area and a sedimentation area located between the landscape area and the dike. The sedimentation area is connected to the peripheral seawater area through the water inlet gateway. There is an anti-seepage curtain in the cofferdam, and the sedimentation area replenishes water to the landscape area based on the water pressure difference between the sedimentation area and the landscape area;

[0008] Buffer baffles are provided in several numbers and are located in the sedimentation area, dividing the sedimentation area into several interconnected partition areas. The buffer baffles are used to buffer the seawater impact between adjacent partition areas.

[0009] A drainage sluiceway that connects the artificial lake area and the peripheral seawater area and is used to discharge the water body of the artificial lake area.

[0010] In some embodiments, a pumping device is further included for pumping the seawater in the sedimentation area into the landscape area.

[0011] In some embodiments, there is a water storage space in the anti-seepage curtain, and the pumping device is connected to the water storage space.

[0012] In some embodiments, the lowest controlled water surface height of the sedimentation area is higher than the highest controlled water surface height of the landscape area.

[0013] In some embodiments, each of the inlet gates operates independently under control.

[0014] The present invention further provides a water environment monitoring and control system for a seawater artificial lake in the coastal area, which is used to monitor and control the water environment of the seawater artificial lake in the coastal area as described above. The system includes:

[0015] A data acquisition layer for obtaining the water environment data of the artificial lake area and the water environment data of the peripheral seawater area. The data types include the water level of the landscape area of the artificial lake, the sediment content of the landscape area, the water level of the sedimentation area, the continuous closing time of the inlet gate, and the water level of the peripheral seawater area and the sediment content of the peripheral seawater area.

[0016] A control logic layer that establishes a comparison mapping relationship between the acquired data and the corresponding preset data thresholds.

[0017] A data processing layer includes a gate operation opening model, and inputs the acquired and screened water level and sediment content data of the peripheral seawater area into the gate operation opening model.

[0018] A motion execution layer that drives and controls the operation of the inlet gate.

[0019] The present invention further provides a water environment monitoring and control method for the seawater artificial lake in the coastal area as described above, including the following steps:

[0020] S1: Obtain the comprehensive water level Z of the peripheral seawater area 海 and the comprehensive sediment content C of the peripheral seawater area 海 ; obtain the water level Z of the landscape area of the artificial lake 湖 , the water level Z of the sedimentation area 沙 . If:

[0021] Z 海 ≥ZY ;

[0022] or

[0023] Z 湖 ≥Z max1 ;

[0024] or

[0025] Z 沙 ≥Z max2 ;

[0026] Then, perform step S2;

[0027] Otherwise, perform step S3;

[0028] Wherein, Z Y is the maximum water level of the outermost peripheral seawater area for calculation, Z max1 is the highest threshold of the water level in the artificial lake landscape area, Z max2 is the highest threshold of the water level in the sedimentation area of the artificial lake.

[0029] S2: Open the drainage gate until the following conditions are met:

[0030] Z 海 <Z Y ;

[0031] and

[0032] Z 湖 <Z max1 ;

[0033] and

[0034] Z 沙 <Z max2 after;

[0035] Perform step S3;

[0036] S3: Obtain the water level Z 湖 of the artificial lake landscape area, the sediment concentration C 湖 of the artificial lake landscape area, the water level Z 沙 of the sedimentation area, and the duration T for which the inlet gate has been continuously closed;

[0037] S4: Based on the preset minimum water level threshold Z min1 of the artificial lake landscape area, the maximum sediment concentration threshold C max of the artificial lake landscape area, the minimum water level threshold Z min2 of the sedimentation area, and the maximum duration threshold T max for which the inlet gate is continuously closed, if:

[0038] Z 湖 ≤Z min1 ;

[0039] or

[0040] C 湖 ≥C max ;

[0041] or

[0042] Z 沙 ≤Z min2 ;

[0043] or

[0044] ≥T max ;

[0045] Then, proceed to step S5;

[0046] Otherwise, return to step S1;

[0047] S5: If:

[0048] Z X <Z 海 <Z Y ;

[0049] Then, proceed to step S6;

[0050] Otherwise, proceed to step S10;

[0051] Where: Z X is the minimum peripheral seawater area water level for calculation.

[0052] S6: Input the comprehensive water level Z of the peripheral seawater area 海 and the comprehensive sediment concentration C of the peripheral seawater area 海 into the gate operation opening model for calculation to obtain the lifting gate and translation gate movement strokes;

[0053] S7: Control the movement of the lifting gate and translation gate based on the calculation results in step S6;

[0054] S8: Obtain the water level Z of the artificial lake sedimentation area 沙 ;

[0055] S9: Based on the preset maximum threshold Z of the artificial lake sedimentation area water level max2 , if:

[0056] Z 沙 ≥Z max2 ;

[0057] Then, close the water inlet gate;

[0058] Otherwise, return to step S8;

[0059] S10: Conduct artificial water replenishment into the artificial lake scenic area.

[0060] In some embodiments, the opening amplitude model of the gate is:

[0061] ;

[0062] , ;

[0063] where H is the descending stroke of the lifting gate, H0 is the maximum descending stroke of the lifting gate, h is the horizontal height at the top of the lifting gate in the closed state, L is the moving stroke of the translating gate, L0 is the maximum translating stroke of the translating gate, μ1 is the first conversion coefficient, μ2 is the second conversion coefficient, Q0 is the gate control flow rate, and Q0, h, μ1, and μ2 are all constants.

[0064] In some embodiments, step S1 includes:

[0065] S11: Obtain the water level monitored by the sensors and the sediment concentration monitored by the sensors in the peripheral seawater area, sequentially number the sensors, input the water level monitored by the sensors and the sediment concentration monitored by the sensors into the entity monitoring model, and calculate the entity monitoring water level and entity monitoring sediment concentration in the peripheral seawater area;

[0066] where the entity monitoring model is:

[0067] ;

[0068] ;

[0069] Z1 is the entity monitoring water level, n is the number of water level sensors, Z 1-i is the detected water level obtained by the i-th water level sensor with the label, C1 is the entity monitoring sediment concentration, m is the number of sediment concentration sensors, C 1-i is the detected sediment concentration obtained by the i-th sediment concentration sensor with the label;

[0070] S12: Obtain the monitored water level and monitored sediment concentration in the peripheral seawater area through remote sensing monitoring, divide the remote sensing monitoring area into grids and number the grids, input the monitored water level and monitored sediment concentration in each grid into the remote sensing monitoring model, and calculate the remote sensing monitoring water level and remote sensing monitoring sediment concentration in the peripheral seawater area;

[0071] where the remote sensing monitoring model is:

[0072] ;

[0073] ;

[0074] Z2 is the remote sensing monitoring water level, C2 is the remote sensing monitoring sediment concentration, u is the number of grids divided in the remote sensing monitoring area, Z2-v is the water level remotely sensed and monitored for the v-th grid, C 2-v is the detected sediment concentration obtained by the sediment concentration sensor numbered v;

[0075] S13: Input the entity-monitored water level Z1, the entity-monitored sediment concentration C1, the remotely sensed water level Z2, and the remotely sensed sediment concentration C2 into the water level-sediment concentration calculation model to obtain the comprehensive water level Z 海 and the comprehensive sediment concentration C of the monitoring area in the peripheral seawater area 海 ;

[0076] Among them, the water level-sediment concentration calculation model is:

[0077] ;

[0078] ;

[0079] μ3 is the first weight coefficient, μ4 is the second weight coefficient, μ5 is the third weight coefficient, μ6 is the fourth weight coefficient, and μ3, μ4, μ5, and μ6 are all constants.

[0080] In some embodiments, before step S1, the following zoning steps are further included:

[0081] Divide the peripheral seawater area along the length direction of the dike to obtain several peripheral seawater sub-areas. Each of the peripheral seawater sub-areas faces at least one water inlet gate channel, and establish a control mapping relationship between the water level and sediment concentration of the peripheral seawater sub-areas and the inlet gates in the corresponding water inlet gate channels;

[0082] In step S1, obtain the comprehensive water level and comprehensive sediment concentration of each peripheral seawater sub-area;

[0083] In step S6, input the comprehensive water level of each peripheral seawater sub-area and the comprehensive sediment concentration of the peripheral seawater sub-area into the gate operation opening model in sequence for calculation to obtain the lifting gate and translation gate movement strokes corresponding to each peripheral seawater sub-area.

[0084] Applying the above technical solution of the present invention to an artificial seawater lake in the near-shore area has the following effects: Controlling the opening amplitude of the inlet valve based on the seawater level and sediment concentration in the near-shore area, enabling seawater with a lower sediment concentration in the upper layer of the water body to enter the sedimentation area at an appropriate flow rate for water body replenishment, reducing the filtration and seepage pressure of the anti-seepage curtain while ensuring that the sediment concentration of the water body replenished into the landscape area is low, thereby ensuring the water transparency and aesthetic requirements of the landscape area.

[0085] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part. Brief Description of the Drawings

[0086] Figure 1 It is a side view sectional view of an artificial seawater lake in the coastal area, which is an embodiment of the present invention;

[0087] Figure 2 It is a top view schematic diagram of an artificial seawater lake in the coastal area, which is an embodiment of the present invention;

[0088] Figure 3 It is a side view schematic diagram at the buffer baffle;

[0089] Figure 4 It is a logic block diagram of the water environment monitoring and control system of an artificial seawater lake in the coastal area, which is an embodiment of the present invention;

[0090] Figure 5 It is a logic block diagram of the water environment monitoring and control method of an artificial seawater lake in the coastal area, which is an embodiment of the present invention;

[0091] Figure 6 It is a logic block diagram for obtaining the comprehensive water level and comprehensive sediment content of the peripheral seawater area in step S1.

[0092] Explanation of reference numerals

[0093] 1. Peripheral seawater area; 11. Peripheral seawater sub - area; 2. Artificial lake area; 21. Landscape area; 22. Sedimentation area; 23. Partition area; 3. Dike; 4. Inlet gate channel; 5. Inlet gate; 51. Lifting gate; 52. Translating gate; 6. Cofferdam; 7. Impervious curtain; 71. Water storage space; 8. Buffer baffle; 9. Drainage gate channel; 10. Pumping equipment; Ⅰ. First monitoring area; Ⅱ. Second monitoring area; Ⅲ. Third monitoring area. Detailed implementation manners

[0094] The following is a detailed description of the specific implementation manners of the present invention. It should be understood that the specific implementation manners described herein are only for explaining and illustrating the present invention, and are not used to limit the present invention.

[0095] In the present invention, unless otherwise stated, the orientation terms such as "upper, lower" generally refer to the orientation in the assembled and used state. "Inner, outer" refer to the inner and outer relative to the contour of each component itself.

[0096] An artificial seawater lake in the coastal area disclosed by the present invention, in combination with the attached Figure 1 and the attached Figure 2 As shown, it includes a dike 3, an inlet gate channel 4, an inlet gate 5, a cofferdam 6, an impervious curtain 7, a buffer baffle 8 and a drainage gate channel 9.

[0097] The dam 3 is used to isolate the peripheral seawater area 1 and the artificial lake area 2. The water inlet channel 4 is arranged in the dam 3 to connect the peripheral seawater area 1 and the artificial lake area 2. The water volume in the artificial lake area 2 is generally lost through evaporation. The water body in the peripheral seawater area 1 enters the artificial lake area 2 through the water inlet channel 4 for water body replenishment and exchange, that is, the water body in the peripheral seawater area 1 replaces the water lost by evaporation in the artificial lake area 2 to achieve the effect of water body exchange and improve the eutrophication of the artificial lake water area. A number of water inlet channels 4 are arranged along the length direction of the dam 3 to improve the efficiency of the water body in the peripheral seawater area 1 entering the artificial lake area 2.

[0098] The drainage channel 9 connects the artificial lake area 2 and the peripheral seawater area 1 and is used to discharge the water body of the artificial lake area 2. The setting of the drainage channel 9 can, on the one hand, completely discharge the water body in the artificial lake area 2, facilitating the inspection and maintenance of the artificial lake; on the other hand, it can be opened when the water level in the artificial lake area 2 is too high to quickly lower the water level in the artificial lake area 2; on the third hand, it can be opened during the process of the peripheral seawater area 1 replenishing water into the artificial lake area 2 to make the water body in the artificial lake area 2 in a state of flowing exchange. It should be noted that drainage equipment such as drainage pumps needs to be installed in the drainage channel 9 to ensure the drainage efficiency on the one hand and realize the one-way flow of the water body in the drainage channel 9 to prevent seawater from flowing back into the artificial lake area 2 from the drainage channel 9 on the other hand.

[0099] An intake gate 5 is installed in the water inlet channel 4. The intake gate 5 includes a lifting gate 51 and a sliding gate 52.

[0100] The intake gate 5 is controlled to start and stop based on the water environment data of the artificial lake area 2. Specifically, when the water environment data in the artificial lake area 2 meets the artificial lake landscape requirements, the intake gate 5 is in the closed state, cutting off the water inlet channel 4 to avoid the water body exchange between the peripheral seawater area 1 and the artificial lake area 2 and maintaining the ornamental state of the artificial lake area 2. When the water environment data in the artificial lake area 2 does not meet the artificial lake landscape requirements, the intake gate 5 is opened for water body replenishment and exchange in the artificial lake area 2.

[0101] The opening amplitude of the intake gate 5 is controlled based on the water level and sediment concentration data of the peripheral seawater area 1. Generally, in the water body of the peripheral seawater area 1, the sediment concentration in the shallow water layer of the same area is lower than that in the deep water layer. The lifting gate 51 is in the highest position in the initial state, and the shallow water body of the peripheral seawater area 1 is obtained by the operation of the lifting gate 51 descending. The higher the water level and sediment concentration of the peripheral seawater area 1, the lower the descending stroke of the lifting gate 51, that is, the movement stroke of the lifting gate 51 is negatively correlated with both the water level and sediment concentration of the peripheral seawater area 1.

[0102] The movement stroke of the sliding gate 52 is determined based on the movement stroke of the lifting gate 51 to ensure that the water flow rate of the water inlet gate 5 remains stable. That is, the movement stroke of the sliding gate 52 is negatively correlated with the movement stroke of the lifting gate 51, and the movement stroke of the sliding gate 52 is positively correlated with the water level and sediment content of the peripheral seawater area 1.

[0103] The cofferdam 6 is located in the artificial lake area 2 and divides the artificial lake area 2 into a landscape area 21 and a sedimentation area 22 located between the landscape area 21 and the dam 3. The sedimentation area 22 is connected to the peripheral seawater area 1 through the water inlet gate 4. The water from the peripheral seawater area 1 entering the artificial lake area 2 through the water inlet gate 4 first enters the sedimentation area 22 for sedimentation treatment. The cofferdam 6 is provided with an anti-seepage curtain 7. The anti-seepage curtain 7 infiltrates water from the sedimentation area 22 to the landscape area 21 based on the water pressure difference between the sedimentation area 22 and the landscape area 21. The anti-seepage curtain 7 mainly plays a filtering role. Since the water from the peripheral seawater area 1 entering the sedimentation area 22 is a shallow water body with low sand content, the sedimentation pressure of the sedimentation area 22 and the filtering pressure of the anti-seepage curtain 7 are reduced.

[0104] There are several buffer baffles 8 located in the sand settling area 22, and the sand settling area 22 is divided into several identical separation areas 23. The buffer baffles 8 buffer the impact of seawater between adjacent separation areas 23. Since there are several inlet gates 4, multiple streams of seawater will enter the sand settling area 22 from the outer seawater area 1. The buffer baffles 8 can reduce the impact of seawater caused by multiple streams of seawater entering the sand settling area 22. Reducing the impact of seawater can shorten the stabilization time of seawater in the sand settling area 22, thereby shortening the sedimentation time. In this embodiment, combined with the attached Figure 3 As shown, the buffer baffles 8 are a plurality of baffles staggered in the horizontal direction, which can maintain the interaction of seawater between adjacent separation areas 23 while satisfying the buffering effect, so that the filtration pressure of the entire anti-seepage curtain 7 is evenly distributed.

[0105] In some embodiments, a pumping device 10 is also included for pumping seawater in the sand settling area 22 into the landscape area 21. The sand settling area 22 replenishes water to the landscape area 21 through the penetration of the anti-seepage curtain 7, and the water replenishment process is continuous but the water replenishment speed is slow. The setting of the pumping device 10 can realize rapid water replenishment to the landscape area 21 to meet the demand for rapid water replenishment, and can also serve as a fountain landscape.

[0106] In some embodiments, the anti-seepage curtain 7 has a water storage space 71, and the pumping equipment 10 is connected to the water storage space 71. The pumping equipment 10 extracts the seawater filtered by the anti-seepage curtain 7 from the water storage space 71 and then replenishes water to the landscape area 21, avoiding direct pumping from the sand settling area 22. Although the sand content of the surface seawater in the sand settling area 22 is reduced after sedimentation, the sand content is still higher than that of the seawater in the water storage space 71, which is easy to cause clogging of the pumping equipment 10.

[0107] In some embodiments, the lowest controlled water surface height of the sedimentation area 22 is higher than the highest controlled water surface height of the landscape area 21. By maintaining the water surface height of the sedimentation area 22 higher than that of the landscape area 21, it is ensured that the seawater in the sedimentation area 22 always infiltrates and replenishes water to the landscape area 21 through the anti-seepage curtain 7.

[0108] In some embodiments, each intake gate 5 operates independently to meet the water intake requirements of more peripheral seawater areas 1 into the sedimentation area 22.

[0109] The present invention also discloses a water environment monitoring and control system for an artificial seawater lake in the coastal area, which is used to monitor the water environment of the artificial seawater lake in the coastal area as described above. As shown in the appendix Figure 4 shown, the system includes:

[0110] A data acquisition layer for obtaining the water environment data of the artificial lake area 2 and the water environment data of the peripheral seawater area 1. The data types include the water level of the landscape area 21 of the artificial lake, the sediment content of the landscape area 21, the water level of the sedimentation area 22, the continuous closing time of the intake gate 5, and the water level of the peripheral seawater area 1 and the sediment content of the peripheral seawater area 1;

[0111] A control logic layer that establishes a comparison mapping relationship between the acquired data and the preset thresholds of the corresponding data;

[0112] A data processing layer, including a gate operation opening model, and inputting the obtained and screened water level and sediment content data of the peripheral seawater area 1 into the gate operation opening model;

[0113] A motion execution layer that drives and controls the operation of the intake gate 5.

[0114] The present invention also discloses a method for monitoring and controlling the water environment of the artificial seawater lake in the coastal area as described above. As shown in the appendix Figure 5 shown, the method includes the following steps:

[0115] S1: Obtain the comprehensive water level Z of the peripheral seawater area 1 海 and the comprehensive sediment content C of the peripheral seawater area 1 海 ; Obtain the water level Z of the landscape area 21 of the artificial lake 湖 , the water level Z of the sedimentation area 22 沙 . If:

[0116] Z 海 ≥Z Y ;

[0117] Or

[0118] Z 湖 ≥Z max1 ;

[0119] Or

[0120] Z 沙 ≥Z max2 ;

[0121] Then, perform step S2;

[0122] Otherwise, perform step S3;

[0123] Wherein, Z Y is the maximum water level of the peripheral seawater area 1 for calculation, Z max1 is the highest threshold water level of the artificial lake landscape area 21, Z max2 is the highest threshold water level of the artificial lake sedimentation area 22.

[0124] In this embodiment, Z Y is the horizontal height at the top when the lifting gate 51 is in the closed state.

[0125] S2: Open the drainage channel 9 until the following conditions are met:

[0126] Z 海 <Z Y ;

[0127] And

[0128] Z 湖 <Z max1 ;

[0129] And

[0130] Z 沙 <Z max2 After that;

[0131] Perform step S3.

[0132] When Z 海 ≥Z Y , the seawater in the peripheral seawater area 1 will continuously pour into the artificial lake area 2, causing the water levels of the landscape area 21 and the sedimentation area 22 to continuously rise, and even overflow the artificial lake area 2. In this state, open the drainage channel 9 to discharge the water body in the artificial lake area 2 to the peripheral seawater area 1 to avoid flooding in the artificial lake area 2.

[0133] When Z 湖 ≥Z max1 and Z 沙 ≥Z max2 , the water level in the artificial lake area 2 exceeds the control water level, and drainage control of the water level is required.

[0134] When Z 海 <Z Y , Z 湖 <Z max1 and Z 沙 <Z max2When the water level in the artificial lake area 2 is within the controlled water level range and the water level in the peripheral seawater area 1 is within the computable range, the drainage sluice 9 is closed again.

[0135] S3: Obtain the water level Z of the artificial lake scenic area 21 湖 , the sediment content C of the artificial lake scenic area 21 湖 , the water level Z of the sedimentation area 22 沙 and the duration T for which the water inlet gate 5 has been continuously closed;

[0136] S4: Based on the preset minimum water level threshold Z of the artificial lake scenic area 21 min1 , the maximum sediment content threshold C of the artificial lake scenic area 21 max , the minimum water level threshold Z of the sedimentation area 22 min2 and the maximum duration threshold T for which the water inlet gate 5 is continuously closed max , if:

[0137] Z 湖 ≤Z min1 ;

[0138] or

[0139] C 湖 ≥C max ;

[0140] or

[0141] Z 沙 ≤Z min2 ;

[0142] or

[0143] ≥T max ;

[0144] then, proceed to step S5;

[0145] Otherwise, return to step S1;

[0146] S5: If:

[0147] Z X <Z 海 <Z Y ;

[0148] then, proceed to step S6;

[0149] Otherwise, proceed to step S10;

[0150] where: Z X is the minimum water level of the peripheral seawater area 1 for calculation.

[0151] In this embodiment, Z X takes the horizontal height at the top when the lifting gate 51 is fully opened.

[0152] S6: Input the comprehensive water level Z of the peripheral seawater area 1 海 and the comprehensive sediment concentration C of the peripheral seawater area 1 海 into the gate operation opening model for calculation to obtain the movement strokes of the lifting gate 51 and the translation gate 52;

[0153] S7: Control the movement of the lifting gate 51 and the translation gate 52 based on the calculation results in step S6;

[0154] S8: Obtain the water level Z of the artificial lake sedimentation area 22 沙 ;

[0155] S9: Based on the preset maximum water level threshold Z of the artificial lake sedimentation area 22 max2 , if:

[0156] Z 沙 ≥Z max2 ;

[0157] Then, close the water inlet gate 5. The infiltration water supply between the sedimentation area 22 and the landscape area 21 can be carried out by itself.

[0158] Otherwise, return to step S8;

[0159] S10: Carry out artificial water supply into the artificial lake landscape area 21.

[0160] In some embodiments, the gate operation opening model is:

[0161] ;

[0162] , ;

[0163] wherein, H is the descending stroke of the lifting gate 51, H0 is the maximum descending stroke of the lifting gate 51, h is the horizontal height at the top of the lifting gate 51 in the closed state, L is the moving stroke of the translation gate 52, L0 is the maximum translation stroke of the translation gate 52, μ1 is the first conversion coefficient, μ2 is the second conversion coefficient, Q0 is the gate control flow rate, and Q0, h, μ1, and μ2 are all constants.

[0164] In some embodiments, in combination with the attached Figure 6 , step S1 includes:

[0165] S11: Obtain the sensor-monitored water level and sensor-monitored sediment concentration of the peripheral seawater area 1, number the sensors in sequence, and input the sensor-monitored water level and sensor-monitored sediment concentration into the entity monitoring model to calculate the entity-monitored water level and entity-monitored sediment concentration of the peripheral seawater area 1.

[0166] Among them, the entity monitoring model is:

[0167] ;

[0168] ;

[0169] Z1 is the entity monitoring water level, n is the number of water level sensors, Z 1-i is the detected water level obtained by the i-th water level sensor with the label, C1 is the entity monitoring sediment concentration, m is the number of sediment concentration sensors, C 1-i is the detected sediment concentration obtained by the i-th sediment concentration sensor with the label.

[0170] The advantage of sensor monitoring is that it directly monitors the water body, and the obtained data is highly accurate. However, the monitored water level and sediment concentration obtained by sensor monitoring are limited to the water level and sediment concentration in the area where the sensors are set, and cannot cover the entire outer seawater area 1 of the monitored offshore area. The reliability of the monitoring data is low. If a large number of sensors are used to cover and monitor the comprehensive water level and comprehensive sediment concentration in the outer seawater area 1 of the offshore area, the monitoring cost will increase sharply.

[0171] S12: Obtain the monitored water level and sediment concentration of the outer seawater area 1 through remote sensing monitoring, divide the remote sensing monitoring area into grids and label the grids, and input the monitored water level and sediment concentration in each grid into the remote sensing monitoring model to calculate and obtain the remote sensing monitored water level and remote sensing monitored sediment concentration of the outer seawater area 1.

[0172] Among them, the remote sensing monitoring model is:

[0173] ;

[0174] ;

[0175] Z2 is the remote sensing monitored water level, C2 is the remote sensing monitored sediment concentration, u is the number of grids divided in the remote sensing monitoring area, Z 2-v is the water level remotely sensed by the v-th grid, C 2-v is the detected sediment concentration obtained by the v-th sediment concentration sensor.

[0176] Remote sensing monitoring has a wide coverage and can cover the entire outer seawater area 1 of the monitored offshore area. However, there are many interference factors in remote sensing monitoring, and the monitoring accuracy of the monitoring data is low.

[0177] S13: Input the entity monitored water level Z1, entity monitored sediment concentration C1, remote sensing monitored water level Z2, and remote sensing monitored sediment concentration C2 into the water level-sediment concentration calculation model to obtain the comprehensive water level Z 海 of the monitoring area of the outer seawater area 1 and the comprehensive sediment concentration C of the monitoring area of the outer seawater area 1海 。

[0178] Among them, the water level - sediment concentration calculation model is as follows:

[0179] ;

[0180] ;

[0181] μ3 is the first weight coefficient, μ4 is the second weight coefficient, μ5 is the third weight coefficient, μ6 is the fourth weight coefficient, and μ3, μ4, μ5, and μ6 are all constants.

[0182] Integrate the sensor monitoring data and remote sensing monitoring data to improve the accuracy and reliability of the comprehensive water level and comprehensive sediment concentration monitoring data in the peripheral seawater area 1.

[0183] In some embodiments, before step S1, the following zoning steps are further included (shown in the attached Figure 5 in dashed logic boxes):

[0184] Divide the peripheral seawater area 1 along the length direction of the dike 3 to obtain several peripheral seawater sub - areas 11. Each peripheral seawater sub - area 11 faces at least one water inlet gate channel 4, and establish a control mapping relationship between the water level and sediment concentration in the peripheral seawater sub - area 11 and the water inlet gate 5 in the corresponding water inlet gate channel 4.

[0185] In step S1, obtain the comprehensive water level and comprehensive sediment concentration of each peripheral seawater sub - area 11.

[0186] In step S6, input the comprehensive water level of each peripheral seawater sub - area 11 and the comprehensive sediment concentration of the peripheral seawater sub - area 11 into the gate operation opening model for calculation to obtain the movement strokes of the lifting gate 51 and the translation gate 52 corresponding to each peripheral seawater sub - area 11.

[0187] The sediment concentration in different areas of the peripheral seawater area 1 will also be different. In this embodiment, the peripheral seawater area is divided into the first monitoring area Ⅰ, the second monitoring area Ⅱ, and the third monitoring area Ⅲ. The two water inlet gate channels 4 on the left correspond to the first monitoring area Ⅰ, the middle water inlet gate channel 4 corresponds to the second monitoring area Ⅱ, and the two water inlet gate channels 4 on the right correspond to the third monitoring area Ⅲ.

[0188] Generally, the sediment concentration in the seawater in the first monitoring area Ⅰ and the third monitoring area Ⅲ near the coast is higher than that in the seawater in the second monitoring area Ⅱ. Therefore, if the opening amplitudes of the intake gates 5 in the five intake channels 4 are the same, the sediment concentrations of the seawater entering the sedimentation area 22 from the three monitoring areas will vary greatly, resulting in different sedimentation pressures at different positions in the sedimentation area 22 and different filtration pressures at different positions of the anti-seepage curtain 7. Moreover, the sediment concentrations and transparencies of the water bodies in different areas within the landscape area 21 may also be different, ultimately affecting the landscape of the artificial lake.

[0189] Therefore, the outer seawater area 1 is partitioned, and the control mapping relationship between the corresponding monitoring areas and the intake gates 5 in the corresponding intake channels 4 is established to achieve different opening amplitudes of the intake gates 5 corresponding to different monitoring areas, thereby reducing the gap between the sediment concentrations of the seawater entering the sedimentation area 22 from different monitoring areas and ensuring the consistency of the sediment concentration of the seawater used for water replenishment and exchange.

[0190] Specifically, the lifting gates 51 in the four intake channels 4 on the left and right sides have a small movement stroke, while the lifting gate 51 in the middle intake channel 4 has a large movement stroke, that is, shallower seawater is obtained from the first monitoring area Ⅰ and the third monitoring area Ⅲ than from the second monitoring area Ⅱ.

[0191] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0192] In addition, it should be noted that, in the case of no contradiction, the various specific technical features described in the above specific embodiments can be combined in any suitable manner. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0193] In addition, any combination can be made between different embodiments of the present invention as long as it does not violate the idea of the present invention, and it should also be regarded as the content disclosed by the present invention.

Claims

1. A method for monitoring and controlling the water environment of an artificial seawater lake in an offshore area, characterized in that: Artificial seawater lakes in offshore areas include: A dam (3) for isolating an outer seawater area (1) and an artificial lake area (2), wherein the dam (3) has a plurality of water inlet gates (4) connecting the outer seawater area (1) and the artificial lake area (2), wherein the water inlet gates (4) are distributed along the length direction of the dam (3), and the water inlet gates (5) are installed in the water inlet gates (4) for controlling the start and stop based on water environment data of the artificial lake area (2) and the opening width based on water level and sediment content data of the outer seawater area (1), wherein the water inlet gates (5) include a lifting gate (51) and a translation gate (52); a cofferdam (6) located in the artificial lake area (2) and dividing the artificial lake area (2) into a landscape area (21) and a sedimentation area (22) located between the landscape area (21) and the dam (3); the sedimentation area (22) is connected to the peripheral seawater area (1) via the water inlet channel (4); an anti-seepage curtain (7) is provided in the cofferdam (6) and water is replenished by infiltration from the sedimentation area (22) to the landscape area (21) based on the water pressure difference between the sedimentation area (22) and the landscape area (21); A plurality of buffer baffles (8) are provided and are located in the sand settling area (22) and divide the sand settling area (22) into a plurality of interconnected separation areas (23), wherein the buffer baffles (8) are used to buffer the impact of seawater between adjacent separation areas (23); A drainage sluice (9) connecting the artificial lake area (2) and the peripheral seawater area (1) and used for discharging water from the artificial lake area (2); The water environment monitoring and control method comprises the following steps: S1: Obtain the comprehensive water level Z of the peripheral seawater area (1) 海 and the comprehensive sediment content C of the peripheral seawater area (1) 海 ; Get the water level Z of the artificial lake landscape area (21) 湖 , sedimentation area (22) water level Z 沙 ,like: WITH 海 ≥Z Y ; or WITH 湖 ≥Z max1 ; or WITH 沙 ≥Z max2 ; Then, proceed to step S2; Otherwise, proceed to step S3; Among them, Z Y The water level of the maximum peripheral seawater area (1) is calculated, Z max1 is the highest water level threshold of the artificial lake landscape area (21), Z max2 It is the maximum threshold of water level in the sedimentation area of ​​the artificial lake (22); S2: Open the drainage gate (9) until the following conditions are met: WITH 海 <Z Y ; and WITH 湖 <Z max1 ; and Z 沙 <Z max2 back; Perform step S3; S3: Get the water level Z of the artificial lake landscape area (21) 湖 、Artificial lake landscape area (21) sand content C 湖 , sedimentation area (22) water level Z 沙 and the length of time T that the water inlet gate (5) has been closed; S4: Based on the preset minimum water level threshold Z of the artificial lake landscape area (21) min1 、Artificial lake landscape area (21) Maximum sediment concentration threshold C max , sedimentation area (22) minimum water level threshold Z min2 And the maximum duration threshold T of the continuous closure of the water inlet gate (5) max ,like: WITH 湖 ≤Z min1 ; or C 湖 ≥C max ; or WITH 沙 ≤Z min2 ; or T≥T max ; Then, proceed to step S5; Otherwise, return to step S1; S5: If: WITH X <Z 海 <Z Y ; Then, proceed to step S6; Otherwise, proceed to step S10; Where: Z X To calculate the water level of the minimum peripheral seawater area (1), S6: The integrated water level Z of the peripheral seawater area (1) 海 And the surrounding seawater area (1) comprehensive sediment content C 海 Input into the gate operation opening model for calculation to obtain the movement stroke of the lifting gate (51) and the translation gate (52); S7: Controlling the movement of the lifting gate (51) and the translation gate (52) based on the calculation result in step S6; S8: Get the water level Z of the artificial lake sedimentation area (22) 沙 ; S9: Based on the preset maximum water level threshold Z of the artificial lake sedimentation area (22) max2 ,like: WITH 沙 ≥Z max2 ; Then, close the water inlet gate (5); Otherwise, return to step S8; S10: Artificially replenish water into the artificial lake landscape area (21).

2. The method for monitoring and controlling the water environment of an artificial seawater lake in an offshore area according to claim 1, characterized in that: The artificial seawater lake in the offshore area also includes pumping equipment (10) for pumping seawater in the sand settling area (22) into the landscape area (21).

3. The method for monitoring and controlling the water environment of an artificial seawater lake in an offshore area according to claim 2, characterized in that: The anti-seepage curtain (7) has a water storage space (71), and the pumping equipment (10) is connected to the water storage space (71).

4. The method for monitoring and controlling the water environment of an artificial seawater lake in an offshore area according to claim 1, characterized in that: The lowest controlled water level of the sand settling area (22) is higher than the highest controlled water level of the landscape area (21).

5. The method for monitoring and controlling the water environment of an artificial seawater lake in an offshore area according to claim 1, characterized in that: Each of the water inlet gates (5) is independently controlled and operated.

6. The method for monitoring and controlling the water environment of an artificial seawater lake in an offshore area according to claim 1, characterized in that: The gate operation opening model is: ； ， ； Wherein, H is the descending stroke of the lifting gate (51), H0 is the maximum descending stroke of the lifting gate (51), h is the horizontal height of the top of the lifting gate (51) when the lifting gate (51) is in a closed state, L is the moving stroke of the sliding gate (52), L0 is the maximum translation stroke of the sliding gate (52), μ1 is the first conversion coefficient, μ2 is the second conversion coefficient, Q0 is the gate control flow, and Q0, h, μ1 and μ2 are all constants.

7. The method for monitoring and controlling the water environment of an artificial seawater lake in an offshore area according to claim 1, characterized in that: Step S1 includes: S11: obtaining the sensor-monitored water level and the sensor-monitored sediment content of the peripheral seawater area (1), labeling the sensors in sequence, inputting the sensor-monitored water level and the sensor-monitored sediment content into the physical monitoring model, and calculating the physical monitoring water level and the physical monitoring sediment content of the peripheral seawater area (1); Among them, the entity monitoring model is: ； ； Z1 is the physical monitoring water level, n is the number of water level sensors, Z 1-i is the detected water level obtained by the i-th water level sensor, C1 is the physical monitored sediment content, m is the number of sediment content sensors, and C 1-i is the detected sediment content obtained by the sediment content sensor labeled as the i-th; S12: obtaining the monitored water level and monitored sediment content of the peripheral seawater area (1) through remote sensing monitoring, dividing the remote sensing monitoring area into grids and labeling the grids, inputting the monitored water level and monitored sediment content in each grid into a remote sensing monitoring model, and calculating the remote sensing monitored water level and remote sensing monitored sediment content of the peripheral seawater area (1); Among them, the remote sensing monitoring model is: ； ； Z2 is the water level monitored by remote sensing, C2 is the sediment content monitored by remote sensing, u is the number of grids divided in the remote sensing monitoring area, and Z 2-v is the water level monitored by remote sensing in the vth grid, C 2-v is the detected sediment content obtained by the sediment content sensor labeled as v; S13: Input the physical monitoring water level Z1, the physical monitoring sediment content C1, the remote sensing monitoring water level Z2 and the remote sensing monitoring sediment content C2 into the water level-sediment content calculation model to obtain the comprehensive water level Z of the monitoring area of ​​the peripheral seawater area (1). 海 And the comprehensive sediment content C of the monitoring area in the peripheral seawater area (1) 海 ; Among them, the water level-sediment content calculation model is: ； ； μ3 is the first weight coefficient, μ4 is the second weight coefficient, μ5 is the third weight coefficient, μ6 is the fourth weight coefficient, and μ3, μ4, μ5 and μ6 are all constants.

8. The method for monitoring and controlling the water environment of an artificial seawater lake in an offshore area according to claim 1, characterized in that: Before step S1, the following partitioning steps are also included: The peripheral seawater area (1) is divided into regions along the length direction of the dam (3) to obtain a plurality of peripheral seawater sub-regions (11), each of the peripheral seawater sub-regions (11) facing at least one water inlet channel (4), and a control mapping relationship between the water level and sediment content of the peripheral seawater sub-region (11) and the water inlet gate (5) in the corresponding water inlet channel (4) is established; In step S1, the comprehensive water level and comprehensive sediment content of each peripheral seawater sub-area (11) are obtained; In step S6, the comprehensive water level of each peripheral seawater sub-area (11) and the comprehensive sediment content of the peripheral seawater sub-area (11) are sequentially input into the gate operation opening model for calculation, and the movement stroke of the lifting gate (51) and the translation gate (52) corresponding to each peripheral seawater sub-area (11) is obtained.

9. A monitoring and control system for the water environment of an artificial lake in offshore areas, characterized in that: The system is used to implement the water environment monitoring and control method for artificial seawater lakes in offshore areas as claimed in claim 1, comprising: The data collection layer is used to obtain water environment data of the artificial lake area (2) and the peripheral seawater area (1), wherein the data types include the water level of the landscape area (21) of the artificial lake, the sediment content of the landscape area (21), the water level of the sedimentation area (22), the continuous closing time of the water inlet gate (5), and the water level of the peripheral seawater area (1), and the sediment content of the peripheral seawater area (1); The control logic layer establishes a comparative mapping relationship between the acquired data and the corresponding data preset threshold value; The data processing layer includes a gate operation opening model, and inputs the obtained water level data of the peripheral seawater area (1) after screening and the sediment content data of the peripheral seawater area (1) into the gate operation opening model; The motion execution layer drives and controls the operation of the water inlet gate (5).

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