Shutter type flow separation wall

Abstract

The utility model discloses a shutter type flow separation wall, and belongs to the technical field of navigation buildings. Comprising a flow separation wall frame, foundation piles and shutter type partition plates. The shutter type partition plates are concrete partition plates, and the included angle between each shutter type partition plate and the vertical direction ranges from 15 degrees to 45 degrees. The shape of the shutter type partition plate is an elliptical line segment, and the two linear segments are connected with each other; the utility model has the beneficial effects that: 1, the engineering quantity is very small, and the optimal navigation condition can be obtained when the combined arrangement with the water diversion and drainage channel is carried out; 2, the navigation guarantee rate of the large-flow large-curvature curved river reach ship lock is obviously improved; the permeable rate can be effectively adjusted; the combination of the elliptic curve equation and the two straight line segments eliminates vortexes generated when water flows through.

Description

Technical Field

[0001] The utility model provides a louvered flow isolation wall, especially the flow isolation wall used in the approach channel of a ship lock, belonging to the technical field of the overall layout of navigation buildings. Background Technique

[0002] The upstream and downstream of a ship lock are connected to the main river through the approach channel and the entrance area. Therefore, the quality of the navigable water flow conditions in the entrance area of the approach channel directly affects the safety of ships passing through the lock and is the throat for ships (fleets) to enter and leave the ship lock.

[0003] It is common for the navigable water flow conditions to be poor after the operation of the existing hub ship locks. On the one hand, it affects the navigable safety of the current ships and weakens the transit efficiency. On the other hand, it has an adverse impact on the multi-line planning and construction of the ship locks in the later stage of the hub. Therefore, carrying out the analysis of the reasons for the poor navigable water flow conditions in the upstream and downstream channel areas of the existing ship locks under complex boundary conditions and the research on improvement measures helps to improve the navigable safety conditions of the existing ship locks and create favorable conditions for the layout of the general plane scheme of the next newly built multi-line ship locks. Many scholars have conducted in-depth research on this [1] Lu Lifeng, Wang Neng, Pu Xiaogang. Research on Improvement Measures for Navigable Conditions of Existing Ship Locks under Complex Mountain Conditions [J]. Journal of Waterway and Harbor, 2018, 39(5): 580-583. [2] Wang Neng, Zhang Aiping, Pu Xiaogang. Research on Improvement Measures for Navigable Water Flow Conditions in the Downstream Channel of the Existing Dafotan Ship Lock [J]. Port & Waterway Engineering, 2020(10): 151-155. [3] Wang Jianping, Xing Fangliang, Chen Yifen, etc. Research on the Optimization of the Upstream Approach Channel Entrance Area Scheme of the Shanxiu Ship Lock Expansion Project [J]. Journal of Waterway and Harbor, 2020, 41(4): 448-453. [4] Zhang Shuqing, Peng Yongqin, Xie Chunhang. Experimental Study on Navigable Water Flow Conditions in the Upstream Approach Channel Entrance Area of the Dongjiang Xiajijiao Hub Ship Lock [J]. Port & Waterway Engineering, 2020(5): 116-123. The entrance area and connection section of the ship lock approach channel are often key waters where the flow pattern is disordered and the cross-flow is strong. Over the years, engineering practices and research have focused on the water flow conditions in the entrance area, and extensive research has been carried out on measures such as adjusting the length of the guide dike and opening holes at the dike head, making the lower part of the flow isolation dike permeable, and setting guide piers at the entrance.

[0004] Domestic and foreign experts and scholars have conducted long-term research on the water flow conditions in the entrance area of the approach channel and proposed various improvement measures, such as setting navigation walls, increasing guide piers, using floating guide dikes, setting spur dikes and submerged dams, etc., but not all similar problems can be solved. When encountering new problems, new flow isolation devices will be studied. Content of the Utility Model

[0005] The purpose of the utility model is to address the above problems and propose a louvered flow isolation wall to improve the poor navigable water flow conditions of the existing water conservancy project.

[0006] Specifically, the utility model of the louvered flow partition wall comprises: a flow partition wall frame, foundation piles, and louvered partitions;

[0007] The above-mentioned louvered partition is installed in the flow isolation wall frame, which is formed by the foundation pile extending upward. The louvered partition is a concrete partition.

[0008] The design parameters of the above-mentioned louvered flow barrier are:

[0009] The elevation H of the top of the cutoff wall frame is higher than the highest navigation water level W of the lock. max ;

[0010] The top elevation K of the bottom of the flow-blocking frame is lower than the lowest navigation water level W of the lock. min , and is less than the water level at which the ship is at its maximum draft D at the lowest navigable water level. That is:

[0011] H>W max ;K <W min -D

[0012] Where: H is the elevation of the top of the isolation navigation wall, in meters; W max is the highest navigation water level of the lock, in m; K is the elevation of the bottom of the flow barrier frame, in m; W min is the minimum navigable water level of the lock, in meters; D is the maximum draft of the designed ship, in meters.

[0013] The louvered partitions are concrete partitions, and their angle with the vertical direction is 0 to 45 degrees;

[0014] The shape of the above-mentioned louvered partition is an elliptical line segment with two straight line segments connected to each other;

[0015] The equation of the elliptical segment of the above-mentioned louvered partition is The beneficial effects of the present invention are:

[0016] 1. The utility model has a small engineering workload and can achieve optimal navigation conditions when arranged in conjunction with the water diversion channel;

[0017] 2. The utility model significantly improves the navigation guarantee rate of ship locks in curved river sections with large flow and large curvature;

[0018] 3. The design of the shutters of this utility model can effectively adjust the water permeability;

[0019] 4. The combination of the elliptical curve equation and the two straight line segments on the top of the louver partition of the utility model effectively eliminates the vortex generated when the water flows through, so that a stable flow state can be obtained when the louver partition is tilted at any angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1Schematic side view of the utility model;

[0021] Figure 2 Front view schematic of the utility model;

[0022] Figure 3 Another side view schematic of the utility model at a different angle.

[0023] In the figure, 1 is a louvered partition board; 2 is a foundation pile; 3 is a flow isolation wall frame. Detailed implementation method

[0024] The following gives an embodiment in conjunction with the attached drawings and specifically describes the utility model.

[0025] Embodiment 1

[0026] The first-line ship lock of a certain hub is of Class III and can accommodate 1000t-class ships. The upstream and downstream approach channels are both arranged in an asymmetric manner of "straight-in lock and curved-out lock". The effective dimensions of the ship lock are 224m×23m×3.5m (length×width×threshold water depth). The upper and lower lock heads are 36.0m and 32.8m long respectively. The widths of the upstream and downstream approach channels are 60.0m, and the bottom elevations are 15.7m and 6.0m respectively. The designed highest navigable water level upstream is 25.75m, and the designed lowest navigable water level is the lowest water level for lock-opening scheduling, which is 22.30m; the designed highest navigable water level downstream is 25.50m, and the designed lowest navigable water level is 11.08m.

[0027] The top elevation H of the louvered flow isolation wall is 26m, which is higher than the highest navigable water level W max = 25.5m; the top elevation K of the bottom of its flow isolation frame is 6.0m, which is lower than the lowest navigable water level W min = 11.08m and is less than the water level when the maximum draft D of the ship at the lowest navigable water level is 4m. That is:

[0028] H = 26 > W max = 25.5; K = 6.0 < W min -D = 11.08 - 4 = 7.08m

[0029] Wherein: H is the top elevation of the flow isolation navigation wall, unit m; W max is the highest navigable water level of the ship lock operation, unit m; K is the top elevation of the bottom of the flow isolation frame, unit m; W min is the lowest navigable water level of the ship lock, unit m; D is the maximum draft depth of the designed ship, unit m.

[0030] Embodiment 2

[0031] A louvered flow isolation wall, comprising: a flow isolation wall frame 3, a foundation pile 2, and a louvered partition board 1;

[0032] The above-mentioned louvered partition 1 is installed in the flow partition wall frame 3, which is formed by extending upward from the foundation pile 2. The louvered partition is a concrete partition, and the angle between it and the vertical direction is 45 degrees;

[0033] The shape of the above-mentioned louvered partition is a section of elliptical line segment, and two straight line segments are connected to each other; the elliptical line segment of each partition is at the top for water topping. The water flow first passes through the elliptical line segment and then through the two straight line segments.

[0034] The elliptical line segment equation of the above-mentioned louvered partition is

[0035] Embodiment 3

[0036] A louvered flow partition wall, comprising: a flow partition wall frame 3, a foundation pile 2, and a louvered partition 1;

[0037] The above-mentioned louvered partition 1 is installed in the flow partition wall frame 3, which is formed by extending upward from the foundation pile 2. The louvered partition is a concrete partition, and the angle between it and the vertical direction is 15 degrees.

Claims

1. A louvered flow partition wall, characterized in that: Comprising: A flow partition wall frame, foundation piles, and louvered partitions; the louvered partitions are installed in the flow partition wall frame, the flow partition wall frame is formed by extending upward from the foundation piles, and the louvered partitions are concrete partitions. The design parameters of the louvered flow partition wall are as follows: The top elevation H of the flow isolation wall frame is higher than the highest navigable water level W during the operation of the ship lock max ; The top elevation K of the flow isolation frame is lower than the lowest navigable water level W of the ship lock min , and is less than the water level at which the maximum draft D of the ship is at the lowest navigable water level; that is: H > W max ; K < W min -D Where: H is the elevation of the top of the flow-dividing navigation wall, unit: m; W max is the highest navigable water level during the operation of the ship lock, unit: m; K is the elevation of the top of the bottom of the flow-dividing frame, unit: m; W min is the lowest navigable water level of the ship lock, unit: m; D is the maximum draft depth of the designed ship, unit: m.

2. The louvered flow partition wall according to claim 1, characterized in that: The angle between the louvered partition and the vertical direction is 15 degrees.

3. The louvered flow baffle wall according to claim 1, characterized in that: The shape of the louvered partition is a section of an elliptical line segment, with two straight line segments connected to each other.

4. A louvered flow partition wall according to claim 1, characterized in that: The elliptical segment equation of the louvered partition described above is

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