Seawater artificial lake in offshore area and water environment monitoring control system and control method thereof

Abstract

The invention relates to the field of water environment protection of artificial lakes, and discloses a seawater artificial lake in an offshore area and a water environment monitoring control system and a control method thereof, the seawater artificial lake comprises a dam used for isolating a peripheral seawater area and an artificial lake area; the cofferdam divides the artificial lake area into a landscape area and a desilting area located between the landscape area and the dam, and an anti-seepage curtain is arranged in the cofferdam; the buffer baffles are used for buffering seawater impact between the adjacent separation areas; the drainage gateway is communicated with the artificial lake area and the peripheral seawater area and is used for discharging the water body of the artificial lake area, and the opening degree of a water inlet valve is controlled based on the seawater level and the sand content of the offshore area, so that the seawater with the lower sand content on the upper layer of the water body enters the sand settling area at a proper flow rate for water body supplementation; the filtering seepage pressure of the anti-seepage curtain is reduced, and meanwhile, the sand content of the water body supplemented into the landscape area is low, so that the requirements of transparency and attractiveness of the water body of the landscape area are met.

Description

Technical Field

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

[0002] An artificial lake is a lake that is excavated with a plan and purpose. It is a water conservancy engineering structure that is not created in a natural environment. Artificial lakes are generally used to prevent floods and store water, regulate water flow, and can also be used as a landscape or scenic building. In recent years, people's requirements for the water environment and landscape of coastal waters have gradually increased, and seawater artificial lakes have emerged. Seawater artificial lakes are constructed in the intertidal zone of the coast by enclosing the sea and isolating the outer water body.

[0003] In the prior art, in order to improve the eutrophication of artificial lake waters and prevent algae outbreaks, water supplementation and exchange are often used to speed up the frequency of water exchange and promote water circulation in artificial lakes. In seawater artificial lakes, nearshore water sources are often used for water supplementation. However, the seawater in the nearshore waters has a high sand content. The high sand content of seawater entering the artificial lake area can easily cause turbidity in the artificial lake water, reduce the transparency of the artificial lake water, and easily cause transparency and color differences between the water bodies of the artificial lake, affecting the aesthetics. Summary of the invention

[0004] In view of the above-mentioned deficiencies or defects in the prior art, the present invention provides a seawater artificial lake in offshore areas and a water environment monitoring control system and a control method thereof, which are used to regulate and select seawater with low sand content for water replenishment based on the water level and sand content of the seawater in the offshore area, thereby reducing the seawater filtration pressure while ensuring that the transparency of the artificial lake water meets the aesthetic requirements.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a seawater artificial lake in a coastal area, comprising:

[0006] A dam, used to separate the outer seawater area from the artificial lake area, wherein the dam has a plurality of water inlet gates connecting the outer seawater area and the artificial lake area, the water inlet gates are distributed along the length direction of the dam, and the water inlet gates are installed in the water inlet gates, which are controlled to start and stop based on the water environment data of the artificial lake area and to control the opening width based on the water level and sediment content data of the outer seawater area, and the water inlet gates include lifting gates and translation gates;

[0007] a cofferdam located in the artificial lake area and dividing the artificial lake area into a landscape area and a sedimentation area located between the landscape area and the dam, wherein the sedimentation area is connected to the peripheral seawater area through the water inlet channel, and an anti-seepage curtain is provided in the cofferdam, and water is infiltrated from the sedimentation area to the landscape area based on the water pressure difference between the sedimentation area and the landscape area;

[0008] A plurality of buffer baffles are provided and located in the sand settling area and divide the sand settling area into a plurality of interconnected separation areas, and the buffer baffles are used to buffer the impact of seawater between adjacent separation areas;

[0009] A drainage sluice connects the artificial lake area with the peripheral seawater area and is used to discharge the water in the artificial lake area.

[0010] In some embodiments, it also includes a pumping device for pumping seawater in the sand settling area into the landscape area.

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

[0012] In some embodiments, the lowest controlled water level of the sand settling area is higher than the highest controlled water level of the landscape area.

[0013] In some embodiments, each of the water intake gates is independently controlled for operation.

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

[0015] The data collection layer is used to obtain water environment data of the artificial lake area and the surrounding 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 water inlet gate, and the water level and sediment content of the surrounding seawater area;

[0016] The control logic layer establishes a comparative mapping relationship between the acquired data and the corresponding data preset threshold value;

[0017] The data processing layer includes a gate operation opening model, and inputs the obtained water level and sediment content data of the peripheral seawater area after screening into the gate operation opening model;

[0018] The motion execution layer drives and controls the operation of the water inlet gate.

[0019] The present invention also provides a method for monitoring and controlling the water environment of the artificial seawater lake in the offshore area as described above, comprising the following steps:

[0020] S1: Get the comprehensive water level Z of the peripheral seawater area 海 And the comprehensive sediment content C of the outer sea area 海 ; Get the water level Z of the artificial lake landscape area 湖 , water level in sedimentation area Z 沙 ,like:

[0021] Z 海 ≥ZY ;

[0022] or

[0023] Z 湖 ≥Z max1 ;

[0024] or

[0025] Z 沙 ≥Z max2 ;

[0026] Then, proceed to step S2;

[0027] Otherwise, proceed to step S3;

[0028] Among them, Z Y For the calculation of the maximum peripheral seawater level, Z max1 is the highest threshold of water level in the artificial lake landscape area, Z max2 It is the highest threshold of 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 back;

[0035] Perform step S3;

[0036] S3: Get the water level Z of the artificial lake landscape area 湖 , sand content in artificial lake landscape area C 湖 , water level in sedimentation area Z 沙 and the duration T during which the water inlet gate has been closed;

[0037] S4: Based on the preset minimum water level threshold Z of the artificial lake landscape area min1 , Maximum sand content threshold C of artificial lake landscape area max , the lowest threshold value of water level in sedimentation area Z min2 And the maximum duration threshold T for the continuous closure of the water inlet gate max ,like:

[0038] Z 湖 ≤Z min1 ;

[0039] or

[0040] C 湖 ≥C max ;

[0041] or

[0042] Z 沙 ≤Z min2 ;

[0043] or

[0044] T≥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 The minimum water level of the outer sea area is used for calculation.

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

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

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

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

[0056] Z 沙 ≥Z max2 ;

[0057] Then, close the water inlet gate;

[0058] Otherwise, return to step S8;

[0059] S10: Artificially replenish water into the artificial lake landscape area.

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

[0061]

[0062] Among them, H is the descending stroke of the lifting gate, H0 is the maximum descending stroke of the lifting gate, h is the horizontal height of the top of the lifting gate when it is closed, L is the moving stroke of the sliding gate, L0 is the maximum translation stroke of the sliding gate, μ1 is the first conversion coefficient, μ2 is the second conversion coefficient, Q0 is the gate control flow, Q0, h, μ1 and μ2 are all constants.

[0063] In some embodiments, step S1 includes:

[0064] S11: obtaining the sensor-monitored water level and the sensor-monitored sediment content of the peripheral seawater area, labeling the sensors in sequence, inputting the sensor-monitored water level and the sensor-monitored sediment content into the entity monitoring model, and calculating the entity-monitored water level and the entity-monitored sediment content of the peripheral seawater area;

[0065] Among them, the entity monitoring model is:

[0066]

[0067] 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;

[0068] S12: obtaining the monitoring water level and monitoring sediment content of the peripheral seawater area through remote sensing monitoring, dividing the remote sensing monitoring area into grids and labeling the grids, inputting the monitoring water level and monitoring sediment content in each grid into the remote sensing monitoring model, and calculating the remote sensing monitoring water level and remote sensing monitoring sediment content of the peripheral seawater area;

[0069] Among them, the remote sensing monitoring model is:

[0070]

[0071] 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;

[0072] 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 in the peripheral seawater area. 海 And the comprehensive sediment content C in the monitoring area of ​​the outer sea area 海 ;

[0073] Among them, the water level-sediment content calculation model is:

[0074]

[0075] 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.

[0076] In some embodiments, the following partitioning step is also included before step S1:

[0077] Divide the outer seawater area along the length direction of the dam to obtain a number of outer seawater sub-areas, each of which is directly opposite to at least one water inlet channel, and establish a control mapping relationship between the water level and sediment content of the outer seawater sub-area and the water inlet gate in the corresponding water inlet channel;

[0078] In step S1, the comprehensive water level and comprehensive sediment content of each peripheral seawater sub-area are obtained;

[0079] In step S6, the comprehensive water level of each peripheral seawater sub-area and the comprehensive sediment content of the peripheral seawater sub-area are sequentially input into the gate operation opening model for calculation to obtain the movement stroke of the lifting gate and the translation gate corresponding to each peripheral seawater sub-area.

[0080] An artificial seawater lake in a coastal area using the above technical solution of the present invention has the following effects: the opening width of the water inlet valve is controlled based on the seawater level and sand content in the coastal area, so that seawater with a low sand content in the upper layer of the water body can enter the sedimentation area at an appropriate flow rate for water replenishment, reducing the filtering penetration pressure of the anti-seepage curtain while ensuring that the sand content of the water replenished in the landscape area is low, thereby ensuring the water transparency and aesthetic requirements of the landscape area.

[0081] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] Figure 1 It is a side cross-sectional view of an artificial seawater lake in a coastal area according to one embodiment of the present invention;

[0083] Figure 2 It is a top view schematic diagram of a seawater artificial lake in a near-shore area according to one embodiment of the present invention;

[0084] Figure 3 is a side view schematic diagram of the buffer baffle;

[0085] Figure 4 It is a logic block diagram of a seawater artificial lake water environment monitoring and control system in a coastal area according to an embodiment of the present invention;

[0086] Figure 5 It is a logic block diagram of a method for monitoring and controlling the water environment of an artificial lake in a coastal area according to an embodiment of the present invention;

[0087] 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.

[0088] Description of Reference Numerals

[0089] 1. Outer seawater area; 11. Outer seawater area; 2. Artificial lake area; 21. Landscape area; 22. Sedimentation area; 23. Separation area; 3. Dam; 4. Inlet sluice; 5. Inlet gate; 51. Lifting gate; 52. Sliding gate; 6. Cofferdam; 7. Anti-seepage curtain; 71. Water storage space; 8. Buffer baffle; 9. Drainage sluice; 10. Pumping equipment; I. First monitoring area; II. Second monitoring area; III. Third monitoring area. DETAILED DESCRIPTION

[0090] The specific embodiments of the present invention are described in detail below. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0091] In the present invention, unless otherwise stated, the directional words such as "upper" and "lower" usually refer to the orientation in the assembled state. "Inside" and "outside" refer to the inside and outside relative to the outline of each component itself.

[0092] The present invention discloses an artificial seawater lake in a coastal area, which is combined with an attached Figure 1 and attached Figure 2 As shown, it includes a dam 3, an intake channel 4, an intake gate 5, a cofferdam 6, an anti-seepage curtain 7, a buffer baffle 8 and a drainage channel 9.

[0093] The dam 3 is used to isolate the outer seawater area 1 and the artificial lake area 2, and the water inlet gate 4 is set in the dam 3 to connect the outer seawater area 1 and the artificial lake area 2. The water in the artificial lake area 2 is generally lost through evaporation, and the water in the outer seawater area 1 enters the artificial lake area 2 through the water inlet gate 4 for water replenishment and exchange, that is, the water in the outer seawater area 1 replaces the water lost by evaporation in the artificial lake area 2 to achieve the effect of water exchange and improve the eutrophication of the artificial lake water area. Several water inlet gates 4 are distributed along the length direction of the dam 3 to improve the efficiency of the water in the outer seawater area 1 entering the artificial lake area 2.

[0094] The drainage gate 9 connects the artificial lake area 2 with the peripheral seawater area 1 and is used to discharge the water in the artificial lake area 2. The setting of the drainage gate 9, on the one hand, can completely discharge the water in the artificial lake area 2, which is convenient for the inspection and maintenance of the artificial lake; on the other hand, it can be opened to quickly lower the water level of the artificial lake area 2 when the water level in the artificial lake area 2 is too high; on the third hand, it can be opened during the process of replenishing water from the peripheral seawater area 1 to the artificial lake area 2, so that the water in the artificial lake area 2 is in a state of flow exchange. It should be noted that drainage equipment such as drainage pumps must be installed in the drainage gate 9 to ensure drainage efficiency on the one hand and to achieve unidirectional flow of water in the drainage gate 9 on the other hand to prevent seawater from flowing back from the drainage gate 9 to the artificial lake area 2.

[0095] A water inlet gate 5 is installed in the water inlet channel 4 , and the water inlet gate 5 includes a lifting gate 51 and a translation gate 52 .

[0096] The water inlet 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 requirements of the artificial lake landscape, the water inlet gate 5 is in a closed state, and the water inlet gate 4 is cut off to avoid the exchange of water between the outer seawater area 1 and the artificial lake area 2, so as to maintain the viewing state of the artificial lake area 2. When the water environment data in the artificial lake area 2 does not meet the requirements of the artificial lake landscape, the water inlet gate 5 is opened to replenish and exchange the water in the artificial lake area 2.

[0097] The water inlet gate 5 controls the opening width based on the water level and sediment content data of the peripheral seawater area 1. Generally, in the water body of the peripheral seawater area 1, the sediment content of the shallow water body in the same area is lower than that of the deep water body. 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 and descent of the lifting gate 51. The higher the water level and sediment content of the peripheral seawater area 1, the lower the stroke of the lifting gate 51, that is, the movement stroke of the lifting gate 51 is negatively correlated with the water level and sediment content of the peripheral seawater area 1.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] In some embodiments, the lowest controlled water level of the sand settling area 22 is higher than the highest controlled water level of the landscape area 21. The water level of the sand settling area 22 is kept higher than the water level of the landscape area 21, thereby ensuring that the seawater in the sand settling area 22 always penetrates through the anti-seepage curtain 7 to replenish water in the landscape area 21.

[0104] In some embodiments, each water inlet gate 5 is independently controlled to operate to meet the demand for more water from the peripheral seawater area 1 to enter the sand settling area 22 .

[0105] The present invention also discloses a water environment monitoring and control system for an artificial seawater lake in an offshore area, which is used to monitor the water environment of the artificial seawater lake in the offshore area. Figure 4 As shown, the system includes:

[0106] The data collection layer is used to obtain water environment data of the artificial lake area 2 and 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 water inlet gate 5, and the water level of the peripheral seawater area 1 and the sediment content of the peripheral seawater area 1;

[0107] The control logic layer establishes a comparative mapping relationship between the acquired data and the corresponding data preset threshold value;

[0108] The data processing layer includes a gate operation opening model, and inputs the obtained water level data of the peripheral seawater area 1 and the sediment content data of the peripheral seawater area 1 after screening into the gate operation opening model;

[0109] The motion execution layer drives and controls the operation of the water inlet gate 5.

[0110] The present invention also discloses a method for monitoring and controlling the water environment of the artificial seawater lake in the offshore area. Figure 5 As shown, the following steps are included:

[0111] S1: Get the comprehensive water level Z of the outer sea area 1 海 And the comprehensive sediment content C of the outer sea area 1 海 ; Get the water level Z of artificial lake landscape area 21 湖 , sedimentation area 22 water level Z 沙 ,like:

[0112] Z 海 ≥Z Y ;

[0113] or

[0114] Z 湖 ≥Z max1 ;

[0115] or

[0116] Z 沙 ≥Z max2 ;

[0117] Then, proceed to step S2;

[0118] Otherwise, proceed to step S3;

[0119] Among them, Z Y For calculation of the maximum peripheral seawater area 1 water level, Z max1 is the highest water level threshold of the artificial lake landscape area 21, Z max2 It is the highest water level threshold of 22 in the sedimentation area of ​​the artificial lake.

[0120] In this embodiment, Z Y The value of is the horizontal height of the top when the lifting gate 51 is in the closed state.

[0121] S2: Open the drainage gate 9 until the following conditions are met:

[0122] Z 海 <Z Y ;

[0123] and

[0124] Z 湖 <Z max1 ;

[0125] and

[0126] Z 沙 <Z max2 back;

[0127] Proceed to step S3.

[0128] In Z 海 ≥Z Y When the water level in the outer seawater area 1 is increased, the water level in the landscape area 21 and the sedimentation area 22 will continue to increase, and even overflow the artificial lake area 2. In this state, the drainage gate 9 is opened to discharge the water in the artificial lake area 2 to the outer seawater area 1 to avoid flooding in the artificial lake area 2.

[0129] In Z 湖 ≥Z max1 and Z 沙 ≥Z max2 In both cases, the water level in the artificial lake area 2 exceeds the control water level and drainage is required to control the water level.

[0130] When Z is satisfied 海 <Z Y , Z 湖 <Z max1 And Z 沙 <Z max2When the water level of the artificial lake area 2 is within the control water level range and the water level of the peripheral seawater area 1 is within the calculable range, the drainage gate 9 is closed.

[0131] 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 time T during which the water inlet gate 5 has been closed continuously;

[0132] S4: Based on the preset minimum water level threshold Z of artificial lake landscape area 21 min1 、Artificial lake landscape area 21 Maximum sand content threshold C max , minimum water level threshold Z in sedimentation area 22 min2 And the maximum duration threshold T of the continuous closure of the water inlet gate 5 max ,like:

[0133] Z 湖 ≤Z min1 ;

[0134] or

[0135] C 湖 ≥C max ;

[0136] or

[0137] Z 沙 ≤Z min2 ;

[0138] or

[0139] T≥T max ;

[0140] Then, proceed to step S5;

[0141] Otherwise, return to step S1;

[0142] S5: If:

[0143] Z X <Z 海 <Z Y ;

[0144] Then, proceed to step S6;

[0145] Otherwise, proceed to step S10;

[0146] Where: Z X The minimum water level of the outer seawater zone 1 is used for calculation.

[0147] In this embodiment, Z X The value of is the horizontal height of the top when the lifting gate 51 is in the fully opened state.

[0148] S6: The comprehensive water level Z of the outer sea area 1 海 And the comprehensive sediment content C of the outer sea area 1 海 Input it into the gate operation opening model for calculation to obtain the movement stroke of the lifting gate 51 and the translation gate 52;

[0149] S7: Control the movement of the lifting gate 51 and the translation gate 52 based on the calculation result in step S6;

[0150] S8: Get the water level Z of the artificial lake sedimentation area 22 沙 ;

[0151] S9: Based on the preset maximum water level threshold Z of the artificial lake sedimentation area 22 max2 ,like:

[0152] Z 沙 ≥Z max2 ;

[0153] Then, close the water inlet gate 5. Water can be replenished by self-infiltration between the sedimentation area 52 and the landscape area 51.

[0154] Otherwise, return to step S8;

[0155] S10: artificially replenishing water into the artificial lake landscape area 21.

[0156] In some embodiments, the gate operation opening model is:

[0157]

[0158] Among them, 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 it is in the 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.

[0159] In some embodiments, the combination Figure 6 , step S1 comprises:

[0160] S11: Obtain the sensor-monitored water level and sensor-monitored sediment content of the peripheral seawater area 1, and label the sensors in sequence, input the sensor-monitored water level and sensor-monitored sediment content into the physical monitoring model, and calculate the physical monitoring water level and physical monitoring sediment content of the peripheral seawater area 1.

[0161] Among them, the entity monitoring model is:

[0162]

[0163] 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 sand content obtained by the sand content sensor labeled as the i-th.

[0164] The advantage of sensor monitoring is that it is a direct monitoring of the water body, and the data obtained is highly accurate. However, the water level and sand content obtained by sensor monitoring are limited to the water level and sand content of the area where the sensor is set, and cannot cover the entire peripheral seawater area 1 of the monitoring offshore area, and the reliability of the monitoring data is low. If a large number of sensors are used to cover the comprehensive water level and comprehensive sand content of the peripheral seawater area 1 of the monitoring offshore area, the monitoring cost will increase dramatically.

[0165] S12: Obtain the monitored water level and monitored sediment content of the peripheral seawater area 1 through remote sensing monitoring, divide the remote sensing monitoring area into grids and label the grids, input the monitored water level and monitored sediment content in each grid into the remote sensing monitoring model, and calculate the remote sensing monitored water level and remote sensing monitored sediment content of the peripheral seawater area 1.

[0166] Among them, the remote sensing monitoring model is:

[0167]

[0168] 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 sand content obtained by the sand content sensor labeled v.

[0169] Remote sensing monitoring has a wide coverage area and can cover the entire outer seawater area of ​​the offshore area. However, there are many interference factors in remote sensing monitoring, and the monitoring accuracy of the monitoring data is low.

[0170] 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 Z1 of the monitoring area of ​​the peripheral seawater area 1. 海 And the comprehensive sediment content C in the monitoring area of ​​the outer sea area 1 海 .

[0171] Among them, the water level-sediment content calculation model is:

[0172]

[0173] 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.

[0174] Integrate sensor monitoring data and remote sensing monitoring data to improve the accuracy and reliability of the comprehensive water level and comprehensive sediment content monitoring data of the peripheral seawater area 1.

[0175] In some embodiments, the following partitioning step is also included before step S1 (see Appendix Figure 5 Indicated by dotted logic boxes):

[0176] The outer seawater area 1 is divided into regions along the length direction of the dam 3 to obtain a plurality of outer seawater sub-regions 11, each of which is opposite to at least one water inlet channel 4, and a control mapping relationship between the water level and sediment content of the outer seawater sub-region 11 and the water inlet gate 5 in the corresponding water inlet channel 4 is established.

[0177] In step S1 , the comprehensive water level and comprehensive sediment content of each peripheral seawater sub-area 11 are obtained.

[0178] 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 to obtain the movement stroke of the lifting gate 51 and the translation gate 52 corresponding to each peripheral seawater sub-area 11.

[0179] The sand content of the peripheral seawater area 1 in different areas will also be different. In this embodiment, the peripheral seawater area is divided into a first monitoring area I, a second monitoring area II and a third monitoring area III. The first monitoring area I corresponds to the two water inlet channels 4 on the left, the second monitoring area II corresponds to the middle water inlet channel 4, and the third monitoring area III corresponds to the two water inlet channels 4 on the right.

[0180] Generally, the sand content of seawater in the first monitoring area I and the third monitoring area III near the coast is higher than that in the second monitoring area II. Therefore, if the opening widths of the water inlet gates 5 in the five water inlet channels 4 are the same, the sand content of seawater entering the sedimentation area 22 from the three monitoring areas is quite different, resulting in different sedimentation pressures at different positions of the sedimentation area 22 and different filtration pressures at different positions of the anti-seepage curtain 7, and even different sand content and transparency of water bodies in different areas of the landscape area 21, which ultimately affects the landscape of the artificial lake.

[0181] Therefore, the outer seawater area 1 is divided into zones and a control mapping relationship between the corresponding monitoring areas and the water inlet gates 5 in the corresponding water inlet channel 4 is established to achieve different opening widths of the water inlet gates 5 corresponding to different monitoring areas, thereby reducing the difference in the sand content of seawater entering the sedimentation area 22 from different monitoring areas and ensuring the consistency of the sand content of seawater used for water replenishment and exchange.

[0182] Specifically, the lifting gates 51 in the four water inlet channels 4 on the left and right sides have a small movement stroke, and the lifting gate 51 in the middle water inlet 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.

[0183] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0184] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0185] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. An artificial seawater lake in a coastal area, characterized in that: include: A dam (3) is used to separate the outer seawater area (1) and the 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 the water environment data of the artificial lake area (2) and the opening width based on the 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) connects the artificial lake area (2) and the peripheral seawater area (1) and is used to discharge the water in the artificial lake area (2).

2. The artificial seawater lake in the offshore area according to claim 1, characterized in that: It also includes a pumping device (10) for pumping seawater in the sand settling area (22) into the landscape area (21).

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

6. A monitoring and control system for the water environment of an artificial lake in offshore areas, characterized in that: The system is used for monitoring and controlling the water environment of the artificial seawater lake in the offshore area as claimed in any one of claims 1 to 5, comprising: The data collection layer is used to obtain water environment data of the artificial lake area (2) and water environment data of 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).

7. A method for monitoring and controlling the water environment of an artificial seawater lake in a coastal area as claimed in any one of claims 1 to 5, characterized in that: The steps include: 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 , water level Z in sedimentation area (22) 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 threshold of water level in 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 maxc 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 , water level Z in sedimentation area (22) 沙 and the time period T during which 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 , minimum water level threshold Z in sedimentation area (22) min2 and the maximum duration threshold T for 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 outer sea area (1), S6: The comprehensive water level Z of the peripheral seawater area (1) 海 And the peripheral 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 replenishing water into the artificial lake landscape area (21).

8. The method for monitoring and controlling the water environment of an artificial seawater lake in an offshore area according to claim 7, 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 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, and Q0, h, μ1 and μ2 are all constants.

9. The method for monitoring and controlling the water environment of an artificial seawater lake in an offshore area according to claim 7, 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 entity monitoring model, and calculating the entity-monitored water level and the entity-monitored 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 the 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.

10. The method for monitoring and controlling the water environment of an artificial seawater lake in an offshore area according to claim 7, 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) directly 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.

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