Threshold water depth early warning method and system based on ship lift hydraulic structure and working door structure

Abstract

The application discloses a kind of based on ship lift hydraulic structure and working door structure's door sill water depth early warning method and system, belong to ship lift operation maintenance field.The method includes: with ship lift hydraulic structure and topographic map as foundation, by reading ship lift lock head area channel elevation, determine the effective navigable water area of working door at the same elevation, according to channel water level, channel elevation and equipment height, calculate the lock head sill water depth of navigation area, provide main basis for safe navigation of ship.The sill water depth calculation value is included in early warning control program, the sill water depth measured value is compared with the calculation value, then logical judgment is carried out, and the sill water depth early warning is carried out.According to early warning information, lock head door position is adjusted, so that the sill water depth meets the navigation needs, through the optimization of program, improve the response accuracy of ship lift lock head sill water depth, to achieve the requirement of safe navigation.

Description

Technical Field

[0001] This invention relates to the field of ship lift operation and maintenance, and specifically to a threshold water depth early warning method and system based on the hydraulic structure and working gate structure of the ship lift. Background Technology

[0002] In the structure of a ship lift, the lock gate is a crucial component for impounding water in the navigation channel and a vital passage for vessels entering the ship lift chamber. The water depth at the gate sill is a critical factor in determining whether vessels can pass safely and whether the gate can effectively impound water. If the sill depth is too low, vessels are prone to bottoming out when passing through the lock gate area; if the sill depth is too high, the channel water can easily overflow the top of the gate. Therefore, controlling the sill depth within an appropriate range is a key issue that the ship lift must address to adapt to different navigation water levels.

[0003] Currently, the main method for predicting threshold water depth is to determine whether a vessel can pass and whether the gate is safe to block water by observing the threshold water level gauge reading. This process requires both a threshold water level gauge and a channel water level gauge. These gauges measure water depth and can automatically determine and record the water levels of rivers, lakes, and irrigation canals to determine the water depth. Combined with specific factors such as the vessel's draft, this ensures that the channel water level remains within a reasonable range, preventing any impact on vessel passage safety.

[0004] This method has the following problems: the threshold water level gauge and the channel water level gauge are not in the same water area, and the measurement reference surfaces are different. It is impossible to directly determine whether the threshold water depth and channel water level are correctly calibrated or whether the deviation of the threshold water level gauge itself is within the normal range. This makes it impossible for manual identification of whether the reading is erroneous. All of these factors contribute to the inability to accurately determine whether the threshold water depth affects ship navigation and flood control safety. This invention provides a threshold water depth early warning method to reduce the risks to ship navigation and flooding caused by inaccurate threshold water depth judgment. Summary of the Invention

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this invention provides a threshold water depth early warning method and system based on the hydraulic structure and working gate structure of a ship lift. This method achieves accurate early warning of threshold water depth while considering engineering costs. Through program optimization, this solution improves the accuracy of responding to the working threshold water depth of the ship lift gate.

[0006] To achieve the above objectives, according to a first aspect of the present invention, a threshold water depth early warning method based on a ship lift hydraulic structure and a working gate structure is provided, comprising the following steps:

[0007] Step S100: Obtain the structural data and installation elevation data of the ship lift equipment, including the elevation value H of the gate working gate on the bottom plate of the channel and the height h0 of the zero point of the sill water depth from the bottom of the channel when the gate is in the lowest position.

[0008] Step S200: Based on the measured water level data, obtain the average water level S1 of the pilot channel corresponding to the threshold water depth point;

[0009] Step S300: Based on the data obtained in steps S1 and S2, and combined with the actual participation of the n-section gate with a height of △S, calculate the threshold water depth value S0 corresponding to the channel water level.

[0010] Step S400: The measured value S0' of the threshold water depth obtained by the threshold water depth gauge is compared and verified with the calculated value S0 of the threshold water depth. If the deviation is within the specified range, the measured value is allowed to participate in the operation control; if the deviation exceeds the specified range, the threshold water depth gauge is calibrated or the water depth gauge that exceeds the deviation is disconnected.

[0011] Step S500: Compare the average threshold water depth measured in step S400 with the navigable threshold maintenance water depth to determine whether the threshold water depth meets the conditions when a vessel passes through the lock gate area, i.e., determine whether the measured value S0' is within the navigable maintenance water depth (S L S H Within the range;

[0012] Step S600: Based on the determination result of step S500, and in conjunction with the structure, adjustment method and early warning information of the working gate of the ship lift lock head, adjust the working gate position; when the sill water depth is less than the maintenance water depth, adjust the working gate position of the lock head downward or reduce the working beam gate; when the sill water depth is greater than the maintenance water depth, adjust the working gate position of the lock head upward or add a beam gate.

[0013] Specifically, in step S200,

[0014] The head channel water level measuring well c is equipped with multiple water level gauges. The water level values ​​of the approach channel measured by each water level gauge are uploaded to the water level information system for processing. Based on this, the average value S1 of the multiple water level gauges is obtained, and the calculated value S1 represents the water level of the approach channel.

[0015] Specifically, in step S300,

[0016] Based on the structural data of the ship lift equipment, the equipment installation elevation, and the average water level of the approach channel, the channel water level variation that can be accommodated by changing the gate position or adding / removing one section of the gate during the operation of the stacked beam gate is ΔS. The number of gate positions that can be adjusted or the number of stacked beam gates that can be added or removed is n. The total height of the n stacked beam gates with a height of ΔS actually involved in the operation is n·ΔS. Therefore, the formula for calculating the threshold water depth S0 corresponding to the channel water level is:

[0017] S0 = S1 - H - (h0 + n·△S).

[0018] Furthermore, when the gate is at its lowest position, the zero point of the sill water depth is a specific height h0 from the bottom plate of the channel. At this time, the number of working sections of the gate head stacked beam is n = 0, and the height of the gate head working stacked beam is n·△S = 0. Then, the sill water depth value S0 = S1 - H - h0.

[0019] Furthermore, since the working gate of the ship lift lock can adapt to changes in the channel water level by adjusting the gate position or adding or removing working beam gates, each change in gate position or addition or removal of a beam gate can adapt to a channel water level change of ΔS. The number of gate positions that can be adjusted or the number of beam gates that can be added or removed is n (when n≠0). When adjusting the gate position, the navigable water depth S0=S1-H-(h0+n·ΔS).

[0020] The threshold water depth value S0 must be controlled within a specific range (S L S H Between ) to meet the ship's draft requirements and the safety water-blocking requirements of the sluice gate, S0 is in (S L S H Within this range, navigation safety can be guaranteed to a great extent;

[0021] Among them, S L The minimum water depth required for navigation maintenance is related to the draft of the ship passing through the ship lift. Sufficient safety margin is allowed beyond this depth to prevent the ship's bottom from rubbing against the door. H The maximum water depth required for navigation maintenance is related to the height of the openable part of the lock gate of the ship lift, with sufficient safety margin provided to prevent channel water from flooding the gate; when S0>S H At that time, there is a risk that the channel water will overflow the lock head working gate; when S0 L At times, there is a risk that ships may scrape the bottom of the work gate as they pass through the entrance area.

[0022] Specifically, the process in step S400 is as follows:

[0023] The measured value S0′ of the threshold depth gauge is sent to the programmable logic controller (PLC). The PLC determines the absolute value of the difference between the measured value S0′ and the calculated value S0. If the absolute value is within 0.1m, the data measured by the threshold depth gauge is allowed to participate in subsequent control. If the measured value S0′ of the threshold depth gauge differs from the theoretical calculated value by more than 0.1m, a prompt is made that calibration is required. If calibration is not performed, a prompt is made that the gauge must be disconnected before allowing the threshold depth gauge to participate in subsequent control.

[0024] Specifically, in step S500,

[0025] ​In the programmable logic controller, the measured value S0′ of the threshold water depth is compared with the calculated value S0, and the absolute value of the difference between the two is calculated. If the deviation is within the allowable range, the data measured by the threshold water level gauge is allowed to participate in the subsequent early warning program control. If the deviation exceeds the allowable range, a prompt is made that calibration is required. If calibration is not performed, a prompt is made that the gauge must be cut off before the corresponding threshold water level gauge is allowed to participate in the subsequent control process.

[0026] Specifically, in step S600,

[0027] Based on the determination result of step S500, threshold water depth early warning information is generated. The threshold water depth measurement value S0′ participates in the adjustment of the early warning procedure. The adjustment is based on S0′ and its relationship with the navigation maintenance water depth (S...). L S H The specific situation between the gate and the gate will generate different early warning prompts under different circumstances to prompt the operation and maintenance personnel to make different adjustments to the gate working gate and the gate stacked beam gate to different degrees;

[0028] When S0′<S L When the warning message is issued, “Please adjust the working gate downwards” or “Please reduce the working beam stack”, the maintenance personnel will then adjust the working gate downwards or reduce the working beam stack accordingly to ensure that the water depth at the threshold is within the specified range and to ensure navigation safety.

[0029] When S0′>S H When the warning message is issued, it will prompt "Please adjust the working gate upwards" or "Please add working beams". Then, the maintenance personnel will adjust the working gate upwards or add working beams accordingly to ensure that the water depth at the threshold is within the specified range and to ensure navigation safety.

[0030] According to a second aspect of the present invention, a threshold water depth early warning system based on a ship lift hydraulic structure and a working gate structure is provided, comprising:

[0031] The data acquisition unit is used to acquire structural data and installation elevation data of the ship lift equipment, including the elevation value H of the lock head working gate on the bottom plate of the channel, and the height h0 of the zero point of the sill water depth from the bottom sill when the gate is in the lowest position.

[0032] The average water level calculation unit is used to obtain the average water level S1 of the pilot channel corresponding to the threshold water depth point based on the water level data measured by the channel water level gauge.

[0033] The threshold water depth calculation unit is used to calculate the threshold water depth value S0 corresponding to the channel water level based on the data obtained in steps S100 and S200, combined with the actual participation of the n-section gate with a height of △S in the stacked beam of the gate.

[0034] The measurement and calibration mechanism uses the threshold water depth gauge to measure the threshold water depth S0', and compares the measured value S0' with the calculated threshold water depth S0. If the deviation is within the specified range, the measured value S0' is allowed to participate in the operation control; if the deviation exceeds the specified range, the threshold water depth gauge is calibrated or the water depth gauge exceeding the deviation is disconnected.

[0035] The navigation maintenance water depth judgment unit is used to compare the average threshold water depth measured in step S400 with the navigable threshold maintenance water depth, and to determine whether the threshold water depth meets the conditions when the ship passes through the lock gate area, that is, to determine whether the measured value S0' is within the range of navigation maintenance water depth (SL, SH).

[0036] The gate position adjustment mechanism is used to adjust the working gate position according to the determination result of step S500, combined with the structure, adjustment method and early warning information of the working gate of the ship lift lock head; when the sill water depth is less than the maintenance water depth, the working gate position of the lock head is adjusted downward or the working beam gate is reduced; when the sill water depth is greater than the maintenance water depth, the working gate position of the lock head is adjusted upward or the beam gate is increased.

[0037] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects:

[0038] 1. The method of the present invention utilizes the mathematical relationship between the threshold water depth and the hydraulic structure of the ship lift, the working gate structure, and the channel water level to automatically calibrate the threshold water depth and the channel water level at the water depth point, thereby assisting maintenance personnel in quickly determining the threshold water depth at that water level.

[0039] 2. The method of the present invention sets the threshold water depth calculation value in the programmable logic controller, compares it with the measured value, and provides an early warning prompt to the operation and maintenance personnel to adjust the threshold water level gauge that does not meet the requirements; the early warning prompts the operation and maintenance personnel to perform the corresponding working gate adjustment operation.

[0040] 3. This invention optimizes the threshold water depth early warning procedure, reducing the risk of ship passage and gate obstruction caused by inaccurate threshold water depth values ​​in a less costly manner.

[0041] 4. This invention is applicable to ship lifts built on natural rivers. It can optimize the threshold water depth early warning control program, increase the method of calibrating the channel water level with the threshold water depth, and compare it with the navigable water depth, thereby reducing the risk of ship passage and water blockage at the working gate caused by inaccurate threshold water depth judgment. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the hydraulic structure of the ship lift and the layout of the lock head equipment of the present invention;

[0043] Figure 2This invention relates to a threshold water depth early warning method based on the hydraulic structure and working gate structure of a ship lift;

[0044] Figure 3 This is a flowchart of the threshold water depth early warning method of the present invention;

[0045] Figure 4 The present invention provides a method for calibrating and judging the threshold depth level gauge.

[0046] Figure 5 This is a diagram illustrating the adjustment of the working gate based on threshold water depth early warning information according to the present invention.

[0047] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: a-lock head working gate, b-lock head working beam gate, c-lock head channel water level measuring well, d-sill depth gauge measuring well. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0049] like Figure 1-5 As shown, this embodiment of the invention provides a threshold water depth early warning method based on the hydraulic structure of a ship lift and the working gate structure. Utilizing the mathematical relationship between the threshold water depth and the ship lift hydraulic structure, the working gate structure, and the channel water level, the method automatically calibrates the threshold water depth with the channel water level at the water depth point. The calculated threshold water depth value is set in the programmable logic controller and compared with the measured value. An early warning is issued to maintenance personnel to calibrate threshold water level gauges that do not meet the requirements. After judgment, the measured threshold water depth value that can participate in control is compared with the navigation maintenance water depth, and an early warning is issued to maintenance personnel to perform corresponding working gate adjustment operations, reducing the risk of ship passage and working gate obstruction caused by inaccurate threshold water depth judgment.

[0050] The upper and lower locks of the ship lift are equipped with working gates. Channel water level measuring devices are installed above the upstream working gate and below the downstream working gate, and at a safe distance from the working gates of the locks. Threshold water level gauges are installed on the working gates.

[0051] Specifically, the hydraulic structure of the ship lift and the layout of the lock head equipment, such as Figure 1 As shown;

[0052] Wherein, a is the gate working gate of the gate head, the height of the gate working gate of the gate head cannot be lower than the water surface height, and the lower part of the gate working gate of the gate head is connected to the gate working beam gate of the gate head;

[0053] b is the working stacked beam gate of the gate head. The height of each gate section is △S. When the gate is at the lowest position, no stacked beam gate participates in the work. n represents the number of stacked beam gates participating in the work. At this time, n=0, and the total height of the stacked beam gates participating in the work is n·△S=0.

[0054] c is the head channel water level measuring well, with multiple head channel water level measuring gauges installed on the water surface to measure the water level value of the approach channel;

[0055] d is the threshold depth gauge well, which is located at the navigable water depth S0 to measure the threshold depth S0′. When a ship passes through the lock gate area of ​​the ship lift, the navigable water area is the height of the upper surface of the lock gate from the water surface after the gate is fully opened.

[0056] The threshold water depth early warning method of the present invention is as follows: Figure 2 As shown, the flowchart for this threshold water depth early warning system is as follows: Figure 3 As shown, the specific situation is as follows:

[0057] Step S100: Obtain the structural data and installation elevation data of the ship lift equipment, including: the elevation value of the channel bottom plate where the lock head working gate is arranged is H; when the gate position is at the lowest position, the stacked beam gate does not participate in the work, and at this time the height of the threshold water depth reference plane from the channel bottom plate is calculated as h0.

[0058] Step S200, obtain the pilot channel water level value S1:

[0059] The gate head channel water level measuring well c is equipped with multiple water level gauges. The water level values ​​of the approach channel measured by each water level gauge are uploaded to the water level information system for processing. Based on this, the average value S1 of the multiple water level gauges is obtained, and the calculated value S1 represents the water level of the approach channel.

[0060] Step S300: Calculate the navigable depth S0 corresponding to the threshold water depth point.

[0061] If the gate position or the number of stacked beam gate sections is n, and the channel water level fluctuation can be adapted to by △S when the gate position is changed or a stacked beam gate section is added or removed, then the height of the working stacked beam gate at the lock head is n·△S.

[0062] Based on the channel water level value S1 obtained in step S200 and the height h0 of the sill water depth reference surface from the channel bottom plate and the channel bottom plate elevation H obtained in step S100, the formula for calculating the sill water depth value S0 corresponding to the channel water level is as follows:

[0063] S0 = S1 - H - (h0 + n·△S);

[0064] Where (h0+n·△S) is the distance from the lowest point of the navigable water level of the channel to the bottom plate of the channel;

[0065] Step S400: Determine whether the threshold water depth measurement value S0′ and the channel water level value S0 are correctly matched.

[0066] The measured value S0′ of the threshold water depth gauge is compared with the calculated value S0 of the threshold water depth. If the deviation exceeds the specified range, the value measured by the threshold water depth gauge is calibrated or the value measured by the water depth gauge that exceeds the deviation is cut off so that the deviation value is within the specified range.

[0067] Specifically, such as Figure 4 As shown, the measured value S0′ of the threshold water depth gauge is sent to the programmable logic controller. The controller determines the absolute value of the difference between the measured value S0′ and the calculated value S0′. When the absolute value is within 0.1m, the data measured by the threshold water depth gauge is allowed to participate in the subsequent control.

[0068] Furthermore, if the measured value S0′ of the threshold depth gauge differs from the theoretical calculated value by more than 0.1m, a prompt will be made that calibration is required. If calibration is not performed, a prompt will be made that the gauge must be cut off. Then, the programmable logic controller will be returned to determine whether the absolute value of the difference between the measured value S0′ of the threshold depth gauge and the calculated value S0 of the threshold depth gauge is within 0.1m. The above operation will be repeated until the absolute value of the difference is within 0.1m before the threshold depth gauge corresponding to the measured data is allowed to participate in subsequent control.

[0069] Step S500: Determine whether the threshold water depth is within the navigation maintenance water depth range.

[0070] Compare whether the threshold water depth measurement value S0′ is within the navigation maintenance water depth (S L S H )between;

[0071] Among them, S L The minimum water depth required for navigation maintenance is related to the draft of the ship passing through the ship lift. Sufficient safety margin is allowed beyond this depth to prevent the ship's bottom from rubbing against the door. H The maximum water depth for navigation maintenance is related to the height of the openable part of the lock gate of the ship lift. Sufficient safety margin is left on this basis to prevent the channel water from flooding the gate.

[0072] Furthermore, if S0′ is in (S L S H If the conditions are met, vessels are allowed to pass; otherwise, the lock gate adjustment operation is required.

[0073] Step S600: Adjust the working gate according to the threshold water depth warning information:

[0074] Based on the determination result of step S500, threshold water depth early warning information is generated, such as... Figure 5 As shown, the threshold water depth measurement value S0′ participates in the adjustment early warning procedure, based on S0′ and its relationship with the navigation maintenance water depth (S L S H The specific situation between the gate and the gate will generate different early warning prompts under different circumstances to prompt the operation and maintenance personnel to make different adjustments to the gate working gate and the gate stacked beam gate to different degrees;

[0075] Specifically, when S0′<S L When the warning message is issued, “Please adjust the working gate downwards” or “Please reduce the working beam stack”, the maintenance personnel will then adjust the working gate downwards or reduce the working beam stack accordingly to ensure that the water depth at the threshold is within the specified range and to ensure navigation safety.

[0076] Specifically, when S0′>S H When the warning message is issued, it will prompt "Please adjust the working gate upwards" or "Please add working beams". Then, the maintenance personnel will adjust the working gate upwards or add working beams accordingly to ensure that the water depth at the threshold is within the specified range and to ensure navigation safety.

[0077] Example:

[0078] Taking the lower gate of the ship lift as an example, the implementation steps are as follows:

[0079] Step S100: Obtain the structural data and installation elevation data of the ship lift equipment.

[0080] Compared to the riverbed bottom, the elevation value of the channel bottom plate where the lower lock working gate is located is H;

[0081] When the gate is at its lowest position, the working beam gate of the lower gate does not participate in the work, and the height value of the working beam gate of the lower gate is not calculated. At this time, the height of the sill water depth reference plane from the bottom plate of the navigation channel is h0.

[0082] Step S200, obtain the pilot channel water level value S1:

[0083] The lower gate head channel water level measuring well c is equipped with multiple water level gauges. The water level values ​​of the approach channel measured by each water level gauge are uploaded to the water level information system for processing. Based on this, the average value S1 of the multiple water level gauge measurements is obtained, and the calculated value S1 represents the water level of the approach channel.

[0084] Step S300: Calculate the navigable depth S0 corresponding to the threshold water depth point.

[0085] If the gate position or the number of stacked beam gate sections is n, and the channel water level fluctuation can be adapted to by △S when the gate position is changed or a stacked beam gate section is added or removed, then the height of the working stacked beam gate at the lower lock head is n·△S.

[0086] Furthermore, combining the channel water level value S1 obtained in step S200 and the height h0 of the sill water depth reference surface from the channel bottom plate and the channel bottom plate elevation value H obtained in step S100, the formula for calculating the sill water depth value S0 corresponding to the channel water level is as follows:

[0087] S0 = S1 - H - (h0 + n·△S);

[0088] Specifically, when the gate position is at its lowest point, n = 0, then the height of the working gate position of the lower gate head or the height of the stacked beam gate change n·△S = 0, and the water depth value of the sill at this time is S0 = S1 - H - h0.

[0089] Specifically, when the working gate position or the stacked beam gate of the lower gate head changes by n sections (n≠0), the height of the working stacked beam gate of the lower gate head is n·△S. Then, the water depth of the sill at this time is S0=S1-H-(h0+n·△S).

[0090] Step S400: Determine whether the threshold water depth measurement value S0′ and the channel water level value S0 are correctly matched.

[0091] The measured value S0′ of the threshold water depth gauge is compared with the calculated threshold water depth value S0. If the deviation exceeds the specified range, the value measured by the threshold water depth gauge is calibrated or the value measured by the water depth gauge that exceeds the deviation is cut off so that the deviation value is within the specified range.

[0092] Specifically, such as Figure 4 As shown, the measured value S0′ of the threshold depth gauge is sent to the programmable logic controller (PLC). The PLC determines the absolute value of the difference between the measured value S0′ and the calculated value S0′. If the absolute value is within 0.1m, the data measured by the threshold depth gauge is allowed to participate in subsequent control. If the measured value S0′ of the threshold depth gauge differs from the theoretical calculated value by more than 0.1m, a prompt is made that calibration is required. If calibration is not performed, a prompt is made that the gauge must be disconnected before allowing the threshold depth gauge to participate in subsequent control.

[0093] Step S500: Determine whether the threshold water depth is within the navigation maintenance water depth range.

[0094] Compare whether the threshold water depth measurement value S0′ is within the navigation maintenance water depth (S L S H )between;

[0095] Among them, S L The minimum water depth required for navigation maintenance is related to the draft of the ship passing through the ship lift. Sufficient safety margin is allowed beyond this depth to prevent the ship's bottom from rubbing against the door. HThe maximum water depth for navigation maintenance is related to the height of the openable part of the lock gate of the ship lift. Sufficient safety margin is left on this basis to prevent the channel water from flooding the gate.

[0096] Furthermore, if S0′ is in (S L S H If the conditions are met, vessels are allowed to pass; otherwise, adjustments to the lock gates are required.

[0097] Step S600: Adjust the working gate according to the threshold water depth warning information:

[0098] Based on the determination result of step S500 above, threshold water depth early warning information is generated, and then the relationship between S0′ and S is determined. L S H The size relationship, such as Figure 5 As shown;

[0099] Furthermore, when the threshold water depth S0′ obtained in step S500 is not within (S L S H When the water level is between 0 and 1, a threshold depth warning will be generated. The threshold depth measurement value S0′ participates in the adjustment warning procedure, that is, based on S0′ and its relationship with the navigation maintenance depth (S0′), a threshold depth warning will be generated. L S H The specific situation between the gate and the gate will generate different early warning prompts under different circumstances to prompt the operation and maintenance personnel to make different adjustments to the gate working gate and the gate stacked beam gate to different degrees;

[0100] Specifically, when S0′<S L When the warning message is issued, “Please adjust the working gate downwards” or “Please reduce the working beam stack”, the maintenance personnel will then adjust the working gate downwards or reduce the working beam stack accordingly to ensure that the water depth at the threshold is within the specified range and to ensure navigation safety.

[0101] Specifically, when S0′>S H When the warning message is issued, it will prompt "Please adjust the working gate upwards" or "Please add working beams". Then, the maintenance personnel will adjust the working gate upwards or add working beams accordingly to ensure that the water depth at the threshold is within the specified range and to ensure navigation safety.

[0102] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A threshold water depth early warning method based on the hydraulic structure and working gate structure of a ship lift, characterized in that, Includes the following steps: Step S100: Obtain the structural data and installation elevation data of the ship lift equipment, including the elevation value H of the channel bottom plate where the lock head working gate is arranged; and the height h0 of the zero point of the sill water depth from the bottom of the channel when the gate is at its lowest position. Step S200: Based on the water level data measured by the channel water level gauge, obtain the average water level S1 of the pilot channel corresponding to the threshold water depth point; Step S300: Based on the data obtained in steps S100 and S200, and combined with the actual participation of the n-section gate with a height of △S in the gate head stacked beam, calculate the threshold water depth value S0 corresponding to the channel water level. Step S400: The measured value S0' of the threshold water depth obtained by the threshold water depth gauge is compared and verified with the calculated value S0 of the threshold water depth. If the deviation is within the specified range, the measured value S0' is allowed to participate in the operation control; if the deviation exceeds the specified range, the threshold water depth gauge is calibrated or the water depth gauge exceeding the deviation is disconnected. Step S500: Compare the average threshold water depth measured in step S400 with the navigable threshold maintenance water depth to determine whether the threshold water depth meets the conditions when a vessel passes through the lock gate area, i.e., determine whether the measured value S0' is within the navigable maintenance water depth range (S L S H )Inside; Step S600: Based on the determination result of step S500, and combined with the structure, adjustment method and early warning information of the working gate of the ship lift lock, adjust the working gate position; when the sill water depth is less than the maintenance water depth, adjust the working gate position of the lock head downward or reduce the working beam gate; when the sill water depth is greater than the maintenance water depth, adjust the working gate position of the lock head upward or add a beam gate. In step S300, the working gate of the ship lift lock head can adapt to changes in the channel water level by adjusting the gate position or adding / removing working beam gates. Combining the ship lift equipment structure data, equipment installation elevation, and average channel water level data, each change in gate position or addition / removal of a beam gate section during beam gate operation can accommodate a channel water level variation of ΔS. The number of adjustable gate positions or add / remove beam gates is n. The total height of the n working lock head beam gate sections with a height of ΔS is n·ΔS. The formula for calculating the corresponding threshold depth S0 under the channel water level is: S0 = S1 - H - (h0 + n·△S).

2. The threshold water depth early warning method based on the hydraulic structure and working gate structure of a ship lift according to claim 1, characterized in that, In step S200, Multiple water level gauges are installed at the water level measuring well c of the lock head channel. The water level values ​​of the approach channel measured by each water level gauge are uploaded to the water level information system for processing. Based on this, the average value S1 of the multiple water level gauges is obtained, and the calculated value S1 represents the water level of the approach channel.

3. The threshold water depth early warning method based on the hydraulic structure and working gate structure of a ship lift according to claim 2, characterized in that, When the gate is at its lowest position, the zero point of the sill water depth is a specific height h0 from the bottom of the channel. At this time, the number of working sections of the gate head stacked beam n=0, and the total height of the gate head stacked beam involved in the operation n·△S=0. Then, the sill water depth value at this time is: S0 = S1 - H - h0.

4. The threshold water depth early warning method based on the hydraulic structure and working gate structure of a ship lift according to claim 1, characterized in that, The specific process in step S400 is as follows: The measured value S0´ of the threshold depth gauge is sent to the programmable logic controller (PLC). The PLC determines the absolute value of the difference between the measured value S0´ and the calculated value S0. If the absolute value is within 0.1m, the data measured by the threshold depth gauge is allowed to participate in subsequent control. If the difference between the measured value S0´ of the threshold depth gauge and the theoretical calculated value is greater than 0.1m, a prompt is made that calibration is required. If calibration is not performed, a prompt is made that the gauge must be disconnected before allowing the threshold depth gauge to participate in subsequent control.

5. A threshold water depth early warning method based on the hydraulic structure and working gate structure of a ship lift according to any one of claims 1-4, characterized in that, In step S500, Determine whether the threshold water depth is within the navigation maintenance water depth range: Compare the measured threshold water depth S0' with the navigation maintenance water depth (S L S H If S0' is between (S) L S H If the conditions are met, vessels are allowed to pass; otherwise, the lock gate adjustment operation is required.

6. A threshold water depth early warning method based on the hydraulic structure and working gate structure of a ship lift according to any one of claims 1-4, characterized in that, In step S600, Based on the determination result of step S500, threshold water depth early warning information is generated. The threshold water depth measurement value S0' participates in the adjustment of the early warning procedure. The adjustment is based on S0' and its relationship with the navigation maintenance water depth (S...). L S H The specific situation between the gate and the gate will generate different early warning prompts under different circumstances to prompt the operation and maintenance personnel to make different adjustments to the gate working gate and the gate stacked beam gate to different degrees; When S0´<S L When the warning message is issued, “Please adjust the working gate downwards” or “Please reduce the working beam stack”, the maintenance personnel will then adjust the working gate downwards or reduce the working beam stack accordingly to ensure that the water depth at the threshold is within the specified range and to ensure navigation safety. When S0'>S H When the warning message is displayed, it will say "Please adjust the working gate upwards" or "Please add working beams". Then, the maintenance personnel will adjust the working gate upwards or add working beams accordingly to ensure that the water depth at the threshold is within the specified range and to ensure navigation safety.

7. The threshold water depth early warning method based on the hydraulic structure and working gate structure of a ship lift according to claim 6, characterized in that, The threshold water depth value S0 must be controlled within a specific range (S L S H Between ), to meet the ship's draft requirements and the safety water-blocking requirements of the gate top.

8. A threshold water depth early warning system based on the hydraulic structure and working gate structure of a ship lift, used to implement the threshold water depth early warning method based on the hydraulic structure and working gate structure of a ship lift as described in any one of claims 1-7, characterized in that, include: The data acquisition unit is used to acquire structural data and installation elevation data of the ship lift equipment, including the elevation value H of the lock head working gate on the bottom plate of the channel, and the height h0 of the zero point of the sill water depth from the bottom sill when the gate is in the lowest position. The average water level calculation unit is used to obtain the average water level S1 of the pilot channel corresponding to the threshold water depth point based on the water level data measured by the channel water level gauge. The threshold water depth calculation unit is used to calculate the threshold water depth value S0 corresponding to the channel water level based on the data obtained in steps S100 and S200, combined with the actual participation of the n-section gate with a height of △S in the stacked beam of the gate. The measurement and verification mechanism uses the threshold water depth gauge to measure the threshold water depth S0', and compares the measured value S0' with the calculated value S0 of the threshold water depth for verification. If the deviation is within the specified range, the measured value S0' is allowed to participate in the operation control. If the deviation exceeds the specified range, the threshold water level gauge should be calibrated or the water level gauge exceeding the deviation should be disconnected. The navigation maintenance water depth determination unit is used to compare the average threshold water depth measured in step S400 with the navigable threshold maintenance water depth to determine whether the threshold water depth meets the conditions when a vessel passes through the lock gate area, that is, to determine whether the measured value S0' is within the navigation maintenance water depth (S L S H Within the range of ) The gate position adjustment mechanism is used to adjust the working gate position according to the determination result of step S500, combined with the structure, adjustment method and early warning information of the working gate of the ship lift lock head; when the sill water depth is less than the maintenance water depth, the working gate position of the lock head is adjusted downward or the working beam gate is reduced; when the sill water depth is greater than the maintenance water depth, the working gate position of the lock head is adjusted upward or the beam gate is increased.

Images