CN117490972A - Manual canal ship traveling wave test device and test method - Google Patents
Manual canal ship traveling wave test device and test method Download PDFInfo
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- CN117490972A CN117490972A CN202311530079.4A CN202311530079A CN117490972A CN 117490972 A CN117490972 A CN 117490972A CN 202311530079 A CN202311530079 A CN 202311530079A CN 117490972 A CN117490972 A CN 117490972A
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- 238000012360 testing method Methods 0.000 title claims abstract description 153
- 238000010998 test method Methods 0.000 title description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 239000002689 soil Substances 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 29
- 230000009194 climbing Effects 0.000 claims abstract description 24
- 238000009991 scouring Methods 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 238000009434 installation Methods 0.000 claims description 12
- 238000013016 damping Methods 0.000 claims description 10
- 238000013461 design Methods 0.000 claims description 4
- 239000013013 elastic material Substances 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 17
- 244000025254 Cannabis sativa Species 0.000 description 8
- 239000004746 geotextile Substances 0.000 description 8
- 230000000670 limiting effect Effects 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000012345 traction test Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/56—Towing or pushing equipment
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/56—Towing or pushing equipment
- B63B2021/566—Towing or pushing equipment comprising running ropes or chains, e.g. endless, driven by ground-borne equipment
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a manual canal ship traveling wave test device, which comprises a strip-shaped test water tank filled with water, a model ship positioned in the water in the test water tank, a traction system arranged on the test water tank and connected with the model ship, and a measurement system arranged in the test water tank, wherein the test water tank is provided with a test bank slope with at least one side being obliquely arranged; the measuring system comprises a high-speed camera arranged above the test water tank, a wave height meter vertically arranged in water in the test water tank, and a climbing sensor paved on a test bank slope along the direction perpendicular to the water surface line, wherein the high-speed camera, the wave height meter, the climbing sensor and a power motor of the traction system are respectively connected with a control center. The invention also discloses a method for testing the scouring of the traveling wave of the canal ship to the soil body of the side slope based on the test device. The invention has the advantage of better exploring the effect of the influence of the traveling wave of the canal ship on the side slope of the river.
Description
Technical Field
The invention relates to the technical field of artificial canal engineering tests, in particular to an artificial canal traveling wave test device.
Background
The passage for ship navigation in inland water can be divided into a natural passage and an artificial passage. The natural channel is a channel scale provided by a natural water area for navigation of a ship with a corresponding scale; the artificial channel comprises a canal-like river channel and a canal channel which are excavated manually. According to the resistance of the channel to the ship, the inland channel can be divided into a limiting channel and a non-limiting channel, wherein the artificial canal and the channel belong to the limiting channel, and the natural channel is mostly the non-limiting channel. The artificial canal belongs to the category of inland limited channels, the water cross section of the artificial canal is often quite narrow, and the artificial canal has obvious limiting effect on ship navigation. With the proliferation of inland water transport and the development of large and high-speed ships, inland limited waterways are being subjected to unprecedented threats as navigable rivers and regional ecological infrastructures. For the artificial canal, the action of the ship travelling wave and corresponding water dynamic field change caused by frequent ship navigation on the sediment movement at the bottom of the river bed and the flushing action of the channel bank slope is obvious, and the artificial canal has replaced the bed making action of natural river flow and becomes the most main power factor of the section form evolution. The inland canal engineering is an important component of a new passage of western land and sea, and has important significance on how to better study the influence of the traveling wave on the canal so as to build and maintain the canal safety.
CN201910743496.4 discloses a device and method for simulating the travelling wave of a ship in a hypergravity field, wherein the device comprises a centrifuge basket, a hypergravity model test box and a ship-shaped wave actuating device; the hypergravity model test box comprises a bottom plate, side plates, a front plate and a back plate; the bottom plate is provided with a water inlet hole and a water permeable hole; the tops of the front plate and the back plate are provided with movable guide rails, and the ship-shaped wave actuating device is fixed on the movable guide rails through the support plates and moves along the movable guide rails; the ship-shaped wave actuating device comprises a wedge block, a sliding rod, a limiting block, an impact block and an air pressure actuator; the limiting block is fixed above the supporting plate; the sliding rod penetrates through the limiting block and the supporting plate to be connected with the wedge-shaped block below, and the top end of the sliding rod is connected with the impact block; the pneumatic actuator utilizes pneumatic output to do work and drives the wedge block to move in the direction perpendicular to the supergravity model test box to generate waves. The device and the method can simulate the action of a real ship traveling wave under a hypergravity field. However, the device can only be used for researching the generation process of the traveling wave, and cannot be applied to researching the influence of the traveling wave on the river channel.
CN202111616661.3 discloses a traveling wave measuring system for measuring ship navigation, the measuring device comprises a test pool, a ship is movably arranged on the test pool, a wave height meter is arranged at one end of the test pool, a laser trigger is arranged between the wave height meter and the ship, the laser trigger is connected with the wave height meter, the ship is connected with a dragging frame above the test pool, a fixing rod and a sliding rail are arranged on the dragging frame, a connecting rod is arranged on the fixing rod, the lower part of the connecting rod is connected with the ship, a camera bracket capable of moving along the sliding rail is arranged on the sliding rail, a measuring camera is fixedly arranged below the camera bracket, and the measuring method is suitable for the measuring device. The measuring system can be used for measuring the longitudinal wave data and the surface wave data of the ship in the pool test, and the data acquisition efficiency is improved while the data accuracy is ensured. However, the technology of the patent can only realize measurement and acquisition of the traveling wave by detecting the characteristic data of the traveling wave. The research of the influence of the traveling wave on the river channel cannot be realized.
CN201910609009.5 discloses a simulation experiment device and a simulation experiment method for jet flow and traveling wave disturbance of a traction propulsion propeller, wherein the device comprises: the transparent water tank is of a long-strip-shaped groove structure; the model ship is detachably connected with a propulsion propeller; the traction mechanism comprises a traction rope and a driving mechanism in driving connection with the traction rope, and the driving mechanism is used for dragging the model ship to horizontally move in the transparent water tank at different speeds along the length direction of the water tank through the traction rope; the vertical lifting mechanism is used for changing the draft of the model ship in the transparent water tank; the hydrodynamic observation instrument is used for observing the water body in the water tank and the water sample collecting device. The invention can simulate the moving speed and direction of the ship and the propulsion propeller, the draft of the ship, the rotating speed of the propulsion propeller and the water entering depth indoors, and observe the flow field structure, turbulence characteristics and influence on sediment of jet flow and traveling wave of the propulsion propeller. However, the technology is also more applied to simulating and observing the flow structural characteristics of the traveling wave and the influence on sediment, and is difficult to realize the research on the scouring influence effect of the traveling wave on the river, especially on the side slope of the river.
CN202310655458.X discloses a determination method suitable for the action range of a canal wave bank slope striking area and a traveling wave model test device, and the patent is a technology for researching the influence of traveling waves on the canal slope. However, the technology is more disclosed how to realize the simulation and detection of the traveling wave, and the method and device structure how to simulate and test the actual condition of the canal slope are not disclosed. Therefore, simulation and test experiments for effectively simulating the actual condition of the canal and realizing the actual scouring effect of the traveling wave on the canal slope are still difficult.
Therefore, how to better explore the occurrence of the canal traveling wave and the effect of the canal side slope, and the problems to be solved by the technicians in the field are considered.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problems that: how to provide a manual canal ship traveling wave test device and a test method capable of better exploring the occurrence of canal ship traveling wave and the effect of influence on the river side slope.
In order to solve the technical problems, the invention adopts the following technical scheme:
the artificial canal traveling wave test device comprises an elongated test water tank filled with water, a model ship positioned in the water in the test water tank, a traction system arranged on the test water tank and connected with the model ship, and a measurement system arranged in the test water tank, wherein the test water tank is provided with a test bank slope with at least one side being obliquely arranged; the measuring system comprises a high-speed camera arranged above the test water tank, a wave height meter vertically arranged in water in the test water tank, and a climbing sensor paved on the surface of the test bank slope along the direction perpendicular to the water surface line, wherein the high-speed camera, the wave height meter, the climbing sensor and a power motor of the traction system are respectively connected with the control center.
Therefore, when the device is used, the control center controls the traction system to traction the model ship to travel along the length direction of the test water tank, and the model ship can adjust the counterweight to obtain different draft. Then the high-speed camera, the wave height instrument and the climbing sensor can be controlled to work by the control center. The high-speed camera is used for measuring the flow field of the surface of the canal in the ship moving process, is erected above the test water tank, and the shooting range covers the whole water tank, so that the generation and propagation process of the traveling wave in the ship running process can be shot. The wave height instrument is used for collecting the change process of traveling wave elements of the ship at different positions and different moments in the running process of the ship. The climbing sensor is tiled on the surface of a bank slope, and the bottom end of the climbing sensor is aligned with a water surface line and is used for measuring the climbing and falling heights of the traveling wave along the bank. Therefore, the device can adjust the traction system to obtain different ship speeds, and the test researches the generation effect of the ship speeds and the draft on the ship traveling wave to obtain corresponding wave height data and climbing data. The scouring influence of the traveling wave on the bank slope is better researched.
Further, the traction system comprises an installation base frame erected above the test water tank along the length direction, wherein the positions of the two ends of the installation base frame are opposite to the water body, a height adjusting frame is downwards arranged in the water body, the upper end of the height adjusting frame is connected with the installation base frame through a height adjusting structure, a lifting steering wheel is installed on the inner side, close to the water surface, of the lower end of the height adjusting frame, the lifting steering wheel is axially arranged along the width direction of the test water tank, two fixed steering wheels are further installed on the two sides of the upper end of the installation base frame respectively, at least one fixed steering wheel is connected with a power motor, the traction steel wire rope is integrally arranged in an annular shape, the upper side of the traction steel wire rope is sleeved on the two fixed steering wheels, the lower side of the traction steel wire rope is sleeved on the two lifting steering wheels to form an annular shape, and the middle part of the lower side of the traction steel wire rope is fixedly connected with the model ship along the horizontal direction.
Therefore, when the traction system works, the power motor is controlled to drive the traction steel wire rope to rotate forwards or reversely, and the model ship can be pulled by the steel wire rope to travel back and forth along the length direction of the test water tank for test. Therefore, power is not required to be installed on the model ship, and the control of the test process is more convenient. The height adjusting frame can be used for adjusting the upper position and the lower position through the height adjusting structure, so that the lower side of the traction steel wire rope can be adjusted to be always in the horizontal direction of the model ship for traction when the model ship is tested at different draft, and the stability and the controllability of traction force and traction speed are better ensured; the situation that the steel wire rope is pulled obliquely to cause different positions of the model ship, and the traction force and the traction speed are changed due to different traction angles is avoided, so that the accuracy of test data is affected.
Further, the power motor is a brake motor. And the brake is convenient to control.
Further, fixed steering wheels at two sides of the upper end of the mounting base frame are respectively connected with a power motor, and a clutch is arranged between the power motor and the fixed steering wheels. Thus, one motor can be operated and the other motor can be used as a standby.
Further, mooring posts are respectively arranged at the front end and the rear end of the surface of the model ship and are used for being connected with a traction steel wire rope.
Thus, traction control is conveniently, more stably and reliably realized.
Further, a partition bin is arranged in the middle of the upper surface of the model ship.
The draft is conveniently adjusted by loading the counterweight.
Further, the height adjusting structure comprises a chute vertically arranged on the height adjusting frame, and further comprises a supporting plate vertically fixed at the middle part of a beam at the end part of the mounting base frame along the width direction of the test water tank, two adjusting bolts are vertically and fixedly arranged on the supporting plate along the vertical direction, and the outer ends of the adjusting bolts penetrate through the chute and are fastened by means of a pressing plate and a nut which are arranged on the outer side of the height adjusting frame.
Thus, the two nuts are loosened, the position of the height adjusting frame can be adjusted underwater, the nuts are screwed after adjustment, and the height adjusting frame is pressed and fixed on the supporting plate by the reliable pressing plate. Therefore, the device has the advantages of simple structure and convenient and reliable height adjustment.
Furthermore, an anti-collision device is arranged on the inner side surface of the end part of the test water tank and is opposite to the model ship.
In this way, the model ship can be prevented from damaging the sink device due to inertial impaction after the traction test. It is also possible to obtain longer testable distances with a limited length of the sink.
Further, the anti-collision device comprises a mounting base fixed on the inner side surface of the end part of the test water tank, and the front end of the mounting base is fixedly connected with a damping spring and a buffer module made of elastic materials in sequence.
Therefore, the buffer module and the damping spring are buffered in a double-layer mode, and an anti-collision effect can be better achieved.
Further, the front end of the mounting base is also provided with a pressure sensor, the front end of the pressure sensor is provided with a pressing plate, the front end of the pressing plate is provided with the damping spring, and the pressure sensor is connected with the control center.
Thus, the pressure sensor is connected with the control center and is used for realizing stop control of the power motor. After the model ship test runs to the extreme point, the model ship test impacts the buffer module, is compressed backwards to the damping spring, and enables the pressure sensor to detect the pressure, so that the power motor is controlled to stop working. The anti-collision device realizes the start-stop linkage control of the power motor. The length of the test water tank, which can be used for testing, can be increased to the greatest extent, and meanwhile, the collision prevention device can be prevented from being damaged due to overlarge collision.
Further, a soil filling groove is further formed in the test bank slope, and test soil is filled in the soil filling groove.
Therefore, the condition of the canal slope soil body can be better simulated, and the scouring effect of the traveling wave of the ship on the canal slope soil body can be tested.
Further, the bottom of the soil filling tank is provided with a movable bottom plate, the lower end of the movable bottom plate is rotatably hinged on the bottom plate of the test water tank, the upper end of the movable bottom plate is suspended and supported on the bottom plate of the test water tank by means of a height adjusting device, and a shielding film is arranged between the peripheral side of the movable bottom plate and the test bank slope in a sealing and covering mode.
Therefore, in the test, the height of the upper end of the movable bottom plate can be adjusted through the height adjusting device, so that the adjustment control of the gradient of the test soil body is realized, and the scouring test of the soil bodies of the slopes with different gradients is realized.
Further, a plurality of horizontally arranged hanging flanges are vertically distributed on the upper surface of the movable bottom plate.
Thus, the soil body can be conveniently and better kept on the movable bottom plate.
Further, the height adjusting device is realized by adopting an electric telescopic cylinder.
The application also discloses a method for testing the scouring of the traveling wave of the canal ship to the soil body of the side slope, which comprises the following steps: firstly, acquiring the test device; 2, excavating a side slope soil body from the position of the canal slope to be tested, piling up the side slope soil body in a filling groove, setting up the side slope to be tested according to the actual condition of the canal slope to be tested to form a simulated side slope (for example, grass planting is carried out on the side slope according to the same condition, and geotextile is covered if geotextile is covered), and adjusting the height of the upper end of the movable bottom plate to enable the simulated side slope to be consistent with the design slope of the position of the canal slope to be tested; 3, calculating according to the maximum allowable navigation load and the maximum allowable ship speed of the canal to be tested, or obtaining the traveling wave data of the maximum wave height and the climbing height suffered by the canal slope at the position to be tested according to the mode of detecting the data in the field; 4, controlling the load and the advancing speed of the model ship to enable the generated traveling wave data to be consistent with the traveling wave data of the maximum wave height and the climbing height suffered by the canal slope at the position to be tested, and carrying out a scour test; 5, controlling the model ship to travel back and forth in the test, forming a traveling wave to repeatedly scour the simulated side slope, wherein the daily scour times are consistent with the estimated or actually measured daily navigation ship quantity of the canal to be tested, and ending the test for at least 24 hours; and 6, observing the scour condition of the simulated side slope after the test is finished, if the scour damage condition is larger than a preset value, regulating and reducing the height of the upper end of the movable bottom plate, and repeating the steps 1-5 after reducing the gradient of the simulated side slope (or regulating and increasing measures for preventing soil and water loss, such as regulating grass planting density or increasing geotextile covering thickness) until the scour damage condition is smaller than the preset value, so as to obtain the reliable safety gradient of the side slope.
Thus, for some areas where the canal slope is not provided with a concrete revetment, but the slope protection is carried out only by grass planting (or grass planting) or geotextile covering, the method can be adopted to test, and the safety gradient of the slope under the condition of extreme scouring can be obtained. The side slope is designed or modified according to the safety gradient, so that water and soil loss can be better avoided. In the test method, the whole test process can be conveniently and rapidly completed by means of the device, and flexible adjustment of the slope of the simulated slope can be rapidly realized when needed, so that the test process is greatly simplified, and the test difficulty is reduced.
In summary, the invention has the advantage of better exploring the effect of the running wave of the canal and the side slope.
Drawings
FIG. 1 is a schematic view of a main body part of a traveling wave test apparatus for an artificial canal of the present invention, in which a structure of a measuring system is not shown, and in which a side plate of a test tank is omitted to show an internal structure.
Fig. 2 is a schematic view of the structure of the individual traction system and model vessel of fig. 1.
Fig. 3 is an enlarged schematic view of the single end of fig. 2.
Fig. 4 is an enlarged schematic view of the other end of fig. 2.
FIG. 5 is a schematic diagram of the structure of the back side of the earth-filled trough in the artificial canal traveling wave test device.
Fig. 6 is a schematic block diagram of the connection of electrical components of the measurement system in the artificial canal traveling wave test device of the present invention.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Specific examples:
referring to fig. 1-6, a manual canal traveling wave test device comprises an elongated test water tank 1 containing a water body, a model ship 2 positioned in the water body in the test water tank, a traction system installed on the test water tank 1 and connected with the model ship, and a measurement system installed in the test water tank, wherein the test water tank 1 is provided with a test bank slope 3 with at least one side being obliquely arranged; the measuring system comprises a plurality of high-speed cameras 4 arranged above the test water tank, a plurality of wave height meters 5 vertically arranged in water in the test water tank, and a plurality of climbing sensors 6 paved on the surface of the test bank slope along the direction perpendicular to the water surface line, wherein the high-speed cameras 4, the wave height meters 5, the climbing sensors 6 and a power motor 7 of the traction system are respectively connected with a control center 8.
Therefore, when the device is used, the control center controls the traction system to traction the model ship to travel along the length direction of the test water tank, and the model ship can adjust the counterweight to obtain different draft. Then the high-speed camera, the wave height instrument and the climbing sensor can be controlled to work by the control center. The high-speed camera is used for measuring the flow field of the surface of the canal in the ship moving process, is erected above the test water tank, and the shooting range covers the whole water tank, so that the generation and propagation process of the traveling wave in the ship running process can be shot. The wave height instrument is used for collecting the change process of traveling wave elements of the ship at different positions and different moments in the running process of the ship. The climbing sensor is tiled on the surface of a bank slope, and the bottom end of the climbing sensor is aligned with a water surface line and is used for measuring the climbing and falling heights of the traveling wave along the bank. Therefore, the device can adjust the traction system to obtain different ship speeds, and the test researches the generation effect of the ship speeds and the draft on the ship traveling wave to obtain corresponding wave height data and climbing data. The scouring influence of the traveling wave on the bank slope is better researched.
The traction system comprises an installation base frame 9 erected above a test water tank along the length direction, wherein the two ends of the installation base frame 9 are opposite to the water body, a height adjusting frame 10 is downwards arranged in the water body, the upper end of the height adjusting frame 10 is connected with the installation base frame through a height adjusting structure, a lifting steering wheel 11 is installed on the inner side, close to the water surface, of the lower end of the height adjusting frame, the lifting steering wheel 11 is axially arranged along the width direction of the test water tank, two fixed steering wheels 12 are also installed on two sides of the upper end of the installation base frame respectively, at least one fixed steering wheel is connected with a power motor 7, the traction system further comprises a traction steel wire rope 13 which is integrally arranged in an annular shape, the upper sides of the traction steel wire ropes 13 are sleeved on the two fixed steering wheels 12, the lower sides of the traction steel wire ropes 13 are sleeved on the two lifting steering wheels 11 to form an annular shape, and the middle of the lower sides of the traction steel wire ropes 13 are fixedly connected with a model ship 2 along the horizontal direction.
Therefore, when the traction system works, the power motor is controlled to drive the traction steel wire rope to rotate forwards or reversely, and the model ship can be pulled by the steel wire rope to travel back and forth along the length direction of the test water tank for test. Therefore, power is not required to be installed on the model ship, and the control of the test process is more convenient. The height adjusting frame can be used for adjusting the upper position and the lower position through the height adjusting structure, so that the lower side of the traction steel wire rope can be adjusted to be always in the horizontal direction of the model ship for traction when the model ship is tested at different draft, and the stability and the controllability of traction force and traction speed are better ensured; the situation that the steel wire rope is pulled obliquely to cause different positions of the model ship, and the traction force and the traction speed are changed due to different traction angles is avoided, so that the accuracy of test data is affected.
Wherein the power motor 7 is a brake motor. And the brake is convenient to control.
The fixed steering wheels on two sides of the upper end of the mounting base frame are respectively connected with a power motor, and a clutch is arranged between the power motor and the fixed steering wheels. Thus, one motor can be operated and the other motor can be used as a standby.
Wherein, the front and rear ends of the upper surface of the model ship 2 are respectively provided with a mooring post 14 and are used for being connected with a traction steel wire rope 13.
Thus, traction control is conveniently, more stably and reliably realized.
Wherein, the middle part of the upper surface of the model ship 2 is provided with a separation bin.
The draft is conveniently adjusted by loading the counterweight.
The height adjusting structure comprises a chute vertically arranged on the height adjusting frame 10, and further comprises a supporting plate 16 vertically fixed in the middle of a beam 15 at the end of the mounting base frame along the width direction of the test water tank, two adjusting bolts 17 are vertically and fixedly arranged on the supporting plate 16 along the vertical direction, and the outer ends of the adjusting bolts 17 penetrate through the chute and are fastened by means of a pressing plate 18 and nuts which are arranged on the outer side of the height adjusting frame.
Thus, the two nuts are loosened, the position of the height adjusting frame can be adjusted underwater, the nuts are screwed after adjustment, and the height adjusting frame is pressed and fixed on the supporting plate by the reliable pressing plate. Therefore, the device has the advantages of simple structure and convenient and reliable height adjustment.
Wherein, the inner side surface of the end part of the test water tank 1 is also provided with an anti-collision device which is opposite to the model ship.
In this way, the model ship can be prevented from damaging the sink device due to inertial impaction after the traction test. It is also possible to obtain longer testable distances with a limited length of the sink.
The anti-collision device comprises a mounting base 19 fixed on the inner side surface of the end part of the test water tank, and the front end of the mounting base is fixedly connected with a damping spring 20 and a buffer module 21 made of elastic materials in sequence.
Therefore, the buffer module and the damping spring are buffered in a double-layer mode, and an anti-collision effect can be better achieved.
The front end of the mounting base is also provided with a pressure sensor 23, the front end of the pressure sensor is provided with a pressing plate 22, the front end of the pressing plate is provided with the damping spring 20, and the pressure sensor 23 is connected with the control center 8.
Thus, the pressure sensor is connected with the control center and is used for realizing stop control of the power motor. After the model ship test runs to the extreme point, the model ship test impacts the buffer module, is compressed backwards to the damping spring, and enables the pressure sensor to detect the pressure, so that the power motor is controlled to stop working. The anti-collision device realizes the start-stop linkage control of the power motor. The length of the test water tank, which can be used for testing, can be increased to the greatest extent, and meanwhile, the collision prevention device can be prevented from being damaged due to overlarge collision.
The test bank slope 3 is further provided with a soil filling groove 24, and the soil filling groove 24 is filled with test soil.
Therefore, the condition of the canal slope soil body can be better simulated, and the scouring effect of the traveling wave of the ship on the canal slope soil body can be tested.
Wherein, fill out the bottom of soil tank 24 and be provided with movable bottom plate 25, movable bottom plate lower extreme rotationally articulates on experimental basin bottom plate, and movable bottom plate 25 upper end unsettled setting and rely on height adjusting device 26 to support on experimental basin bottom plate, and the sealed cover is provided with between movable bottom plate week side and the test bank slope and shelters from membrane 27.
Therefore, in the test, the height of the upper end of the movable bottom plate can be adjusted through the height adjusting device, so that the adjustment control of the gradient of the test soil body is realized, and the scouring test of the soil bodies of the slopes with different gradients is realized.
Wherein, a plurality of horizontally arranged hanging flanges (not shown) are vertically arranged on the upper surface of the movable bottom plate 25.
Thus, the soil body can be conveniently and better kept on the movable bottom plate.
Wherein, the height adjusting device 26 is realized by an electric telescopic cylinder.
The application also discloses a method for testing the scouring of the traveling wave of the canal ship to the soil body of the side slope, which comprises the following steps: firstly, acquiring the test device; 2, excavating a side slope soil body from the position of the canal slope to be tested, piling up the side slope soil body in a filling groove, setting up the side slope to be tested according to the actual condition of the canal slope to be tested to form a simulated side slope (for example, grass planting is carried out on the side slope according to the same condition, and geotextile is covered if geotextile is covered), and adjusting the height of the upper end of the movable bottom plate to enable the simulated side slope to be consistent with the design slope of the position of the canal slope to be tested; 3, calculating according to the maximum allowable navigation load and the maximum allowable ship speed of the canal to be tested, or obtaining the traveling wave data of the maximum wave height and the climbing height suffered by the canal slope at the position to be tested according to the mode of detecting the data in the field; 4, controlling the load and the advancing speed of the model ship to enable the generated traveling wave data to be consistent with the traveling wave data of the maximum wave height and the climbing height suffered by the canal slope at the position to be tested, and carrying out a scour test; 5, controlling the model ship to travel back and forth in the test, forming a traveling wave to repeatedly scour the simulated side slope, wherein the daily scour times are consistent with the estimated or actually measured daily navigation ship quantity of the canal to be tested, and ending the test for at least 24 hours; and 6, observing the scour condition of the simulated side slope after the test is finished, if the scour damage condition is larger than a preset value, regulating and reducing the height of the upper end of the movable bottom plate, and repeating the steps 1-5 after reducing the gradient of the simulated side slope (or regulating and increasing measures for preventing soil and water loss, such as regulating grass planting density or increasing geotextile covering thickness) until the scour damage condition is smaller than the preset value, so as to obtain the reliable safety gradient of the side slope.
Thus, for some areas where the canal slope is not provided with a concrete revetment, but the slope protection is carried out only by grass planting (or grass planting) or geotextile covering, the method can be adopted to test, and the safety gradient of the slope under the condition of extreme scouring can be obtained. The side slope is designed or modified according to the safety gradient, so that water and soil loss can be better avoided. In the test method, the whole test process can be conveniently and rapidly completed by means of the device, and flexible adjustment of the slope of the simulated slope can be rapidly realized when needed, so that the test process is greatly simplified, and the test difficulty is reduced.
Claims (10)
1. The artificial canal traveling wave test device comprises an elongated test water tank filled with water, a model ship positioned in the water in the test water tank, a traction system arranged on the test water tank and connected with the model ship, and a measurement system arranged in the test water tank, wherein the test water tank is provided with a test bank slope with at least one side being obliquely arranged; the measuring system comprises a high-speed camera arranged above the test water tank, a wave height meter vertically arranged in water in the test water tank, and a climbing sensor paved on the surface of the test bank slope along the direction perpendicular to the water surface line, wherein the high-speed camera, the wave height meter, the climbing sensor and a power motor of the traction system are respectively connected with the control center.
2. The artificial canal traveling wave test device according to claim 1, wherein the traction system comprises an installation base frame erected above the test water tank along the length direction, wherein the two ends of the installation base frame are opposite to the water body and downwards provided with a height adjusting frame, the upper end of the height adjusting frame is connected with the installation base frame through a height adjusting structure, the inner side, close to the water surface, of the lower end of the height adjusting frame is provided with a lifting steering wheel, the lifting steering wheel is axially arranged along the width direction of the test water tank, two sides of the upper end of the installation base frame are respectively provided with a fixed steering wheel, at least one fixed steering wheel is connected with a power motor, the artificial canal traveling wave test device further comprises a traction steel wire rope which is integrally arranged in a ring shape, the upper sides of the traction steel wire rope are sleeved on the two fixed steering wheels, the lower sides of the traction steel wire rope are sleeved on the two lifting steering wheels and form a ring shape, and the middle parts of the lower sides of the traction steel wire rope are fixedly connected with the model ship along the horizontal direction.
3. The artificial canal traveling wave test device of claim 2, wherein the power motor is a brake motor.
4. The artificial canal ship traveling wave test device according to claim 2, wherein the front and rear ends of the surface of the model ship are respectively provided with a mooring post and are used for being connected with a traction steel wire rope;
the middle part of the surface of the model ship is provided with a partition bin.
5. The artificial canal traveling wave test device according to claim 2, wherein the height adjusting structure comprises a chute vertically arranged on the height adjusting frame, and further comprises a supporting plate vertically fixed in the middle of a beam at the end of the mounting base frame along the width direction of the test chute, wherein two adjusting bolts are vertically and fixedly arranged on the supporting plate along the vertical direction, and the outer ends of the adjusting bolts penetrate through the chute and are fastened by means of a pressing plate and a nut which are arranged outside the height adjusting frame.
6. The artificial canal ship traveling wave test device according to claim 2, wherein an anti-collision device is arranged on the inner side surface of the end part of the test water tank and is opposite to the model ship.
7. The artificial canal traveling wave test device according to claim 6, wherein the anti-collision device comprises a mounting base fixed on the inner side surface of the end part of the test water tank, and a damping spring and a buffer module made of elastic materials are sequentially and fixedly connected to the front end of the mounting base;
the front end of the mounting base is also provided with a pressure sensor, the front end of the pressure sensor is provided with a pressing plate, the front end of the pressing plate is provided with the damping spring, and the pressure sensor is connected with the control center.
8. The artificial canal traveling wave test device according to claim 2, wherein a filling tank is further arranged on the test bank slope, and test soil is filled in the filling tank.
9. The artificial canal ship traveling wave test device according to claim 8, wherein a movable bottom plate is arranged at the bottom of the filling tank, the lower end of the movable bottom plate is rotatably hinged on the bottom plate of the test tank, the upper end of the movable bottom plate is suspended and supported on the bottom plate of the test tank by means of a height adjusting device, and a shielding film is arranged between the peripheral side of the movable bottom plate and the test bank slope in a sealing and covering manner.
10. A method for testing the scouring of a traveling wave of a canal ship to a side slope soil body is characterized by comprising the following steps: 1, firstly, obtaining the test device according to claim 9; 2, excavating a side slope soil body from the position of the canal slope to be tested, accumulating the side slope soil body in a filling groove, setting the side slope according to the actual condition of the canal slope to be tested to form a simulated side slope, and adjusting the height of the upper end of the movable bottom plate to enable the slope design slope of the simulated side slope to be consistent with the slope design slope of the position of the canal slope to be tested; 3, calculating according to the maximum allowable navigation load and the maximum allowable ship speed of the canal to be tested, or obtaining the traveling wave data of the maximum wave height and the climbing height suffered by the canal slope at the position to be tested according to the mode of detecting the data in the field; 4, controlling the load and the advancing speed of the model ship to enable the generated traveling wave data to be consistent with the traveling wave data of the maximum wave height and the climbing height suffered by the canal slope at the position to be tested, and carrying out a scour test; 5, controlling the model ship to travel back and forth in the test, forming a traveling wave to repeatedly scour the simulated side slope, wherein the daily scour times are consistent with the estimated or actually measured daily navigation ship quantity of the canal to be tested, and ending the test for at least 24 hours; and 6, observing the scour condition of the simulated side slope after the test is finished, if the scour damage condition is greater than a preset value, adjusting and reducing the height of the upper end of the movable bottom plate, and repeating the steps 1-5 after the gradient of the simulated side slope is reduced until the scour damage condition is less than the preset value, so as to obtain the reliable safety gradient of the side slope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311530079.4A CN117490972A (en) | 2023-11-16 | 2023-11-16 | Manual canal ship traveling wave test device and test method |
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| CN202311530079.4A CN117490972A (en) | 2023-11-16 | 2023-11-16 | Manual canal ship traveling wave test device and test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117948919A (en) * | 2024-03-25 | 2024-04-30 | 交通运输部天津水运工程科学研究所 | Inland waterway slope protection flatness detection device |
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- 2023-11-16 CN CN202311530079.4A patent/CN117490972A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117948919A (en) * | 2024-03-25 | 2024-04-30 | 交通运输部天津水运工程科学研究所 | Inland waterway slope protection flatness detection device |
| CN117948919B (en) * | 2024-03-25 | 2024-05-31 | 交通运输部天津水运工程科学研究所 | Inland waterway slope protection flatness detection device |
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