Channel dredging depth detection device and method

Abstract

The invention discloses a channel dredging depth detection device and method, and relates to the technical field of channel management, and the device comprises a base which is arranged on a ship body; the supporting plate is supported on the surface of a sludge layer at the water bottom, and the upper end of the supporting rod vertically and upwards penetrates through the bottom of the ship body and the base; an opening is formed in the lower end of the pipeline, and the pipeline is vertically and downwards inserted into a silt layer at the water bottom; a draft detector; scales are arranged on the surfaces of the supporting rod and the pipeline in the length direction. The invention further provides a channel dredging depth detection method. The problems that in the prior art, water depth and sludge thickness cannot be accurately detected when channel dredging depth is detected are solved, the distance between the base and the bottom of a channel is measured through the supporting rod, the distance between the base and the bottom of a sludge layer is measured through the pipeline, and a draft detector on the ship body is combined; and the thickness of the sludge needing to be dredged in the navigation channel and the working depth interval of the dredging tool under the water surface can be quickly and accurately known.

Description

Technical Field

[0001] The present invention relates to the technical field of waterway management, and in particular to a waterway dredging depth detection device and method. Background Art

[0002] During the use of the waterway, silt will continue to be deposited. After a long period of accumulation, the silt layer reaches a certain thickness, which will affect the normal navigation of ships in the waterway, reduce the waterway capacity and navigation safety. Therefore, it is necessary to dredge the waterway in time to remove the silt to maintain normal navigation of the waterway.

[0003] At present, the common way of dredging waterways is to use suction dredgers, grab dredgers and other equipment for dredging. However, these equipment are only used to remove silt, and do not have the function of detecting the thickness and distribution of the underwater silt layer. Therefore, other equipment is needed to detect information such as waterway depth and silt thickness to achieve accurate and efficient dredging. China Patent Announcement No. CN217953604U, the announcement date is December 02, 2022, and the name is "A River Channel Depth Detection Device". A device for detecting the depth of a river channel is disclosed. By setting a winding tube, a tapered disc, a matching sleeve, a lifting rod, a rack, a gear, and a prism base, it can directly reach the bottom of the river channel, avoiding the disturbance of the water flow in the river channel on the tape measure to affect the measurement accuracy, and can clean the silt and measure the water depth of the river channel. However, the detection device approved by this patent cannot accurately measure the thickness of the silt, and does not take into account the influence of the draft depth of the hull, the water depth and the silt thickness on the actual working depth of the dredging tool, and the detection accuracy is insufficient. Summary of the invention

[0004] The present invention overcomes the problem that the prior art cannot accurately detect the water depth and silt thickness when detecting the channel dredging depth, and provides a channel dredging depth detection device and method, wherein the device sets a base on the hull, connects a support rod and a pipeline to the base, measures the distance between the base and the bottom of the channel through the support rod, measures the distance between the base and the bottom of the silt layer through the pipeline, and combines with the draft depth detector on the hull, so as to quickly and accurately know the thickness of the silt that needs to be dredged in the channel and the working depth range of the dredging tool under the water surface.

[0005] In order to achieve the above object, the present invention adopts the following scheme: A waterway dredging depth detection device, comprising: a base, which is disposed on the hull; A support plate and a support rod, wherein the support plate is supported on the surface of the mud layer at the bottom of the water, the lower end of the support rod is fixedly connected to the support plate, and the upper end of the support rod vertically passes through the bottom of the hull and the base; A pipe and a cover, wherein the lower end of the pipe is open and vertically downward passes through the base and the bottom of the hull in sequence and then is inserted into the mud layer at the bottom of the water, and the cover is arranged at the upper end of the pipe to control whether the upper end of the pipe is closed or open; A draft depth detector is arranged on the side of the hull to detect the draft depth of the hull; The support rod and the pipe are both slidably limited up and down in the base, and the surfaces of the support rod and the pipe are both provided with scales along the length direction.

[0006] Preferably, a split structure is provided at the lower end of the pipeline, and the split structure includes a main pipeline and an arc-shaped assembly piece. A vertical assembly groove is opened on the main pipeline, and the arc-shaped assembly piece is fitted in the assembly groove and fixed with bolts.

[0007] Preferably, the pipeline is formed by splicing multiple sections of branch pipe threads, and the upper and lower ends of the branch pipes are respectively provided with matching external threads and internal threads, wherein the outer side of the lower end of the branch pipe connected to the bottom layer is provided with a chamfered surface.

[0008] Preferably, a hole is opened in the middle of the support plate, a pair of support rods are connected to the support plate, the pair of support rods are symmetrically arranged on both sides of the hole, and the pipe passes downward through the hole.

[0009] Preferably, the draft depth detector includes a rectangular shell, a floating body and a scale, the lower end of the rectangular shell is open and vertically fixed to the side of the hull, the floating body is slidably arranged in the rectangular shell, the lower end of the scale is connected to the floating body, and the upper end of the scale vertically passes through the top of the shell.

[0010] Preferably, the draft depth detector also includes a buffer, which is a rectangular box with an opening at the upper end, and the lower end of the shell is suspended in the opening through a connecting block, and the two sides of the connecting block are respectively connected to the outer wall of the shell and the inner wall of the rectangular box, and the connecting block is provided with a water hole.

[0011] Preferably, a pressing piece for assisting downward pressure is further provided at the upper end of the pipe, and the pressing piece includes a pipe sleeve and a handle. The pipe sleeve is arranged on the outer side of the upper end of the pipe, and the position on the pipe sleeve corresponding to the opening of the upper end of the pipe is a hollow structure, and the handle is arranged on both sides of the pipe sleeve.

[0012] The present application also provides a method for detecting the depth of a waterway dredging, which uses a waterway dredging depth detection device as described in any one of the above schemes, and the method comprises the following steps: S1: After the hull reaches the position to be tested, slide the support rod downward until the support plate rests on the mud layer at the bottom of the water, and slide the pipe downward until it is inserted into the mud layer for a certain distance; S2: closing the cover to seal the upper end of the pipe, pulling the pipe out of the base, and if the mud layer material retained in the pipe does not contain the lower layer material of the silt layer, reinserting the pipe into the silt layer, adjusting the pipe insertion depth and repeating step S3 until the lower layer material of the silt layer appears in the pipe; S3: Read the scale value on the support rod to get the distance between the top of the base and the surface of the silt layer , read the scale value on the pipe to get the distance between the top of the base and the bottom of the pipe , read the detection value of the draft depth detector to obtain the hull draft depth ; S4: According to , , Calculate the thickness of silt that needs to be dredged at the current location of the hull and the working depth range of the dredging tools.

[0013] Preferably, the following method is used to calculate the mud thickness and the working depth range of the dredging tool: Calculate silt thickness: ; Calculate the operating depth range of dredging tools: , ,in, The minimum depth at which the dredging tool works. The maximum depth of the dredging tool when working. It is the sum of the base height and the thickness of the hull bottom.

[0014] The present invention has at least the following beneficial effects: (1) by supporting the support plate on the surface of the mud layer at the bottom of the water, by reading the scale value of the support rod, and in conjunction with the draft depth detection device, the water depth of the hull can be quickly measured; (2) by closing the cover to seal the upper end of the pipe, by utilizing the pressure principle, the mud material in the pipe can be completely taken out when the pipe is pulled out, which is convenient for quickly judging whether the mud layer is detected in place. The scale value of the pipe and the scale value on the support rod can be used to quickly measure the accurate thickness of the mud layer; (3) by arranging a split structure at the lower end of the pipe, the stratification information of the mud layer can be judged more intuitively after disassembly. By arranging the pipe into a multi-section pipe splicing structure, it can be suitable for waterway detection at different depths, and it is more convenient to store and use the pipe; (4) by arranging a draft depth detector with a buffer, the floating effect of water surface fluctuations on the floating body in the draft depth detector can be reduced, and the detected draft depth value of the hull is more stable and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 An overall structural diagram of the channel dredging depth detection device provided by the present invention; Figure 2It is a schematic diagram of a pipe branching structure of a pipeline of the present invention; Figure 3 It is a schematic diagram of a matching mode of a pipe and a cover of the present invention; Figure 4 It is a schematic diagram of the matching mode of a pipeline and a pressing piece of the present invention; Figure 5 It is a schematic diagram of the structure of a main pipeline and an arc-shaped assembly piece of the present invention; Figure 6 It is a schematic diagram of an assembly method of a main pipeline and an arc-shaped assembly piece of the present invention; Figure 7 The figure is a schematic structural diagram of a draft depth detector of the present invention.

[0016] In the figure: base 1, hull 2, support rod 3, support plate 4, pipe 5, cover 6, draft depth detector 7, main pipe 501, arc-shaped assembly piece 502, rectangular shell 701, floating body 702, scale 703, rectangular box 704, pressing piece 8. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0018] It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

[0019] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the materials, unless otherwise specified, can be obtained from commercial channels; in the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, set, or detachably connected, set, or connected and set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in specific circumstances. The orientation or position relationship indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0020] like Figure 1-7 As shown, the channel dredging depth detection device provided by the present invention comprises: A base 1, which is arranged on a hull 2; Support plate 4 and support rod 3, the support plate 4 is supported on the mud layer surface at the bottom of the water, the lower end of the support rod 3 is fixedly connected to the support plate 4, and the upper end of the support rod 3 vertically passes through the bottom of the hull 2 ​​and the base 1. The base 1 is fixed at a flat position on the hull 2, and two or more vertical holes corresponding to the positions are opened on the base 1 and the hull 2, and the opening positions are seamlessly connected. The support rod 3 is set in one or two vertical holes of a corresponding number and can slide along the direction of the vertical holes. The upper end of the support rod 3 is provided with a limit block to prevent it from being immersed in the vertical hole. The support rod 3 and the support plate 4 can naturally sink to the bottom of the water under the action of gravity, and can also be manually pressed or a power drive device such as a telescopic rod can be set at the upper end of the support rod 3 to accelerate its sinking into place. The height of the base 1 is close to the height of the hull 2 ​​so that the upper opening of the vertical hole is higher than the external water level. The support plate 4 is a horizontal circular flat plate.

[0021] The pipe 5 and the cover 6 are provided. The lower end of the pipe 5 is open and vertically passes through the base 1 and the bottom of the hull 2 ​​in turn and then is inserted into the mud layer at the bottom of the water. The cover 6 is provided at the upper end of the pipe 5 to control whether the upper end of the pipe 5 is closed or open. The pipe 5 is provided in an empty vertical hole on the base 1 and can slide along the vertical hole. The pipe 5 and the support rod 3 are located in different vertical holes. The pipe 5 avoids the support plate 4 in the downward direction or passes through the preset through hole on the support plate 4. The pipe 5 can completely detach from the base 1 when moving upward. Figure 3 As shown, the cover 6 and the upper end of the pipe 5 are tightly matched to form a sealing structure, and the matching method can be a threaded connection and a sealing ring can be set at the connection; when the cover 6 is opened, the pipe 5 is connected from top to bottom, and the pipe 5 can sink naturally. Since the silt layer to be penetrated is a soft mud layer with less resistance, it can be moved downward into place only by human pressure and the pipe 5's own gravity. A power assist device can also be set at the upper end of the pipe 5. The power assist device can be a telescopic rod, or it can be a rope that pulls the upper end of the pipe 5 downward and other driving structures such as a corresponding rope reel. When the pipe 5 is inserted into the mud layer, there is force feedback, and the mud layer The silt in the pipe 5 will be embedded in the pipe 5. When the cover 6 is closed, the upper end of the pipe 5 is sealed. When the pipe 5 is pulled out, the silt in the pipe 5 will not fall out due to the negative pressure in the pipe 5. After the pipe 5 is completely pulled out from the base 1, the composition of the silt brought out by the pipe 5 can be checked. If the silt composition includes materials from the lower layer of the silt layer, such as the quicksand layer or the hard mud layer, it can be confirmed that the detection has been in place. Otherwise, the pipe 5 is inserted into the deeper part of the mud layer again. Because the pipe 5 will cause squeezing and deformation of the silt when inserted into the silt, the silt cannot maintain its original state. Therefore, the height of the silt entering the pipe 5 cannot generally be used to directly judge the thickness of the silt layer.

[0022] The draft depth detector 7 is arranged on the side of the hull 2 ​​to detect the draft depth of the hull 2; the draft depth detector 7 can use a common water level detector. According to the relative position of the water level detector on the hull 2, the current draft depth of the hull 2 ​​can be known by reading the water level detection value.

[0023] The support rod 3 and the pipe 5 are both limited in the upward and downward sliding in the base 1, and the surfaces of the support rod 3 and the pipe 5 are both provided with scales along the length direction. When the support rod 3 and the pipe 5 are moved downward into position, the scale values ​​of the two at the height position of the top of the base 1 are read, and the vertical distances from the top of the base 1 to the bottom of the water and the bottom of the mud layer can be obtained respectively. The height of the base 1 and the bottom thickness of the hull 2 ​​can also be subtracted in advance when setting the scale to directly display the vertical distances from the bottom of the hull 2 ​​to the bottom of the water and the bottom of the mud layer, wherein the scale value of the pipe 5 is the reading after the last insertion into the mud layer. The mud thickness and water level height at the current position can be quickly calculated by combining the scale value readings of the support rod 3 and the pipe 5 and the detection results of the draft depth detector 7. The mud layer conditions at various positions of the waterway can be known by moving the hull 2 ​​and repeating the detection. The mud can be removed accurately and efficiently by controlling the height of the dredging tools that grab or suck mud, and the mud removal degree during dredging of the waterway is guaranteed because the thickness and depth of the mud are known.

[0024] By using this device, the support plate 4 is supported on the surface of the silt layer at the bottom of the water, and the water depth at the location of the hull 2 ​​can be quickly measured by reading the scale value of the support rod 3 and cooperating with the draft depth detection device; the upper end of the pipe 5 is sealed by closing the cover 6, and the mud and sand in the pipe 5 can be completely taken out when the pipe 5 is pulled out by utilizing the pressure balance principle, so as to quickly determine whether the silt layer is detected in place, and the pipe 5 can be coordinated with the scale value on the support rod 3 to quickly measure the accurate thickness of the silt layer.

[0025] In another technical solution, Figure 5 and Figure 6 As shown, the lower end of the pipeline 5 is provided with a split structure, which includes a main pipeline 501 and an arc-shaped assembly piece 502. The main pipeline 501 is provided with a vertical assembly groove, and the arc-shaped assembly piece 502 is matched in the assembly groove and fixed with bolts. The arc-shaped assembly piece 502 is a slice of the pipeline 5 along the length direction. As an example, Figure 5 and Figure 6 As shown, the arc-shaped assembly piece 502 is a quarter slice of a section of the complete pipe 5, and the assembly groove is the gap left on the pipe 5 after slicing. The main pipe 501 and the arc-shaped assembly piece 502 are provided with corresponding screw holes and connected with bolts. The bolts are completely immersed in the screw holes to ensure that there are no protruding parts on the outer side of the main pipe.

[0026] like Figure 2As shown, the pipe 5 is formed by threading multiple branch pipes, and the upper and lower ends of the branch pipes are respectively provided with external threads and internal threads that match each other, wherein the lower end of the branch pipe connected to the bottom layer is provided with a chamfered surface on the outer side. The outer diameter of the external thread part is smaller than the outer diameter of the pipe 5, and scales are provided on the multiple branch pipes, and the scale values ​​on the branch pipes are continuous according to the connection sequence.

[0027] By setting a split structure at the lower end of the pipeline 5, the stratification information of the silt layer can be more intuitively judged after disassembly. By setting the pipeline 5 as a multi-section pipe splicing structure, it can be suitable for waterway detection at different depths, and it is more convenient for the storage and turnover of the pipeline 5.

[0028] In another technical solution, a hole is opened in the middle of the support plate 4, a pair of support rods 3 are connected to the support plate 4, the pair of support rods 3 are symmetrically arranged on both sides of the hole, and the pipe 5 passes through the hole downward. Through the connection and restriction of the pair of support rods 3, the connection strength of the support plate 4 is higher, and the pipe 5 is more stable when it is restricted in the hole of the support plate 4.

[0029] like Figure 4 As shown, the upper end of the pipe 5 is also provided with a pressing piece 8 for assisting downward pressure, and the pressing piece 8 includes a pipe sleeve and a handle. The pipe sleeve is set on the outer side of the upper end of the pipe 5, and the position on the pipe sleeve corresponding to the opening of the upper end of the pipe 5 is a hollow structure, and the handle is set on both sides of the pipe sleeve. If an external thread is set on the top of the pipe 5, the pipe sleeve has a corresponding internal thread, and the pipe sleeve is threadedly connected to the pipe 5. Due to the hollow design of the pipe sleeve, the upper end of the pipe 5 remains open, ensuring that no positive pressure is formed inside when the pipe 5 is pressed down, so that mud and sand can enter the pipe 5 normally. The handle of the pressing piece 8 is convenient for the staff to hold it by hand or connect it to the driving device.

[0030] In another technical solution, Figure 7 As shown, the draft depth detector 7 includes a rectangular shell 701, a floating body 702 and a scale 703. The lower end of the rectangular shell 701 is open and vertically fixed to the side of the hull 2. The floating body 702 is slidably arranged in the rectangular shell 701. The lower end of the scale 703 is connected to the floating body 702, and the upper end of the scale 703 vertically passes through the top of the shell. The position of the floating body 702 in the rectangular shell 701 changes with the water level. The draft depth of the hull 2 ​​can be known by reading the length of the scale 703 extending out of the shell.

[0031] The draft depth detector 7 also includes a buffer, which is a rectangular box 704 with an opening at the upper end. The lower end of the shell is connected to the opening by a connecting block. The two sides of the connecting block are respectively connected to the outer wall of the shell and the inner wall of the rectangular box 704. The connecting block is provided with a water hole. The upper end of the buffer is open, and the lower end of the shell is open. The shell is suspended in the buffer. The buffer forms a buffer for the water flow while maintaining the connection between the inside and outside of the shell. By providing a buffer, the floating effect of water surface fluctuations on the floating body 702 in the draft depth detector 7 can be reduced, and the detected draft depth value of the hull 2 ​​is more stable and accurate.

[0032] The present application also provides a method for detecting the depth of a waterway dredging, using the waterway dredging depth detection device provided by any one of the above schemes, the method comprises the following steps: S1: After the hull 2 ​​reaches the position to be detected, the support rod 3 is slid downward until the support plate 4 is against the mud layer at the bottom of the water, and the pipe 5 is slid downward until it is inserted into the mud layer for a certain distance; S2: closing the cover 6 to seal the upper end of the pipe 5, pulling the pipe 5 out of the base 1, and if the mud layer material retained in the pipe 5 does not contain the lower layer material of the silt layer, reinserting the pipe 5 into the mud layer, adjusting the insertion depth of the pipe 5 and repeating step S3 until the lower layer material of the silt layer appears in the pipe 5; S3: Read the scale value on the support rod 3 to get the distance between the top of the base 1 and the mud layer surface , read the scale value on pipe 5 to get the distance between the top of base 1 and the bottom of pipe 5 , read the detection value of the draft depth detector 7 to obtain the draft depth of the hull 2 ; S4: According to , , The thickness of the silt that needs to be dredged at the current position of the hull 2 ​​and the working depth range of the dredging tool are calculated.

[0033] In another technical solution, the following method is used to calculate the silt thickness and the working depth range of the dredging tool: Calculate silt thickness: ; Calculate the operating depth range of dredging tools: , ,in, The minimum depth at which the dredging tool works. The maximum depth of the dredging tool when working. It is the sum of the height of the base 1 and the thickness of the bottom of the hull 2.

[0034] The number of devices and processing scales described here are used to simplify the description of the present invention. Applications, modifications and variations of the present invention will be obvious to those skilled in the art.

[0035] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A waterway dredging depth detection device, characterized in that: include: a base, which is disposed on the hull; A support plate and a support rod, wherein the support plate is supported on the surface of the mud layer at the bottom of the water, the lower end of the support rod is fixedly connected to the support plate, and the upper end of the support rod vertically passes through the bottom of the hull and the base; A pipe and a cover, wherein the lower end of the pipe is open and vertically downward passes through the base and the bottom of the hull in sequence and then is inserted into the mud layer at the bottom of the water, and the cover is arranged at the upper end of the pipe to control whether the upper end of the pipe is closed or open; A draft depth detector, which is arranged on the side of the hull to detect the draft depth of the hull; The support rod and the pipe are both slidably limited up and down in the base, and the surfaces of the support rod and the pipe are both provided with scales along the length direction.

2. The waterway dredging depth detection device according to claim 1, characterized in that: A split structure is arranged at the lower end of the pipeline, and the split structure comprises a main pipeline and an arc-shaped assembly piece. A vertical assembly groove is opened on the main pipeline, and the arc-shaped assembly piece is matched in the assembly groove and fixed by bolts.

3. The waterway dredging depth detection device according to claim 1, characterized in that: The pipeline is formed by splicing multiple sections of branch pipe threads, and the upper and lower ends of the branch pipes are respectively provided with mutually matching external threads and internal threads, wherein the outer side of the lower end of the branch pipe connected to the bottom layer is provided with a chamfered surface.

4. The waterway dredging depth detection device according to claim 1, characterized in that: A hole is provided in the middle of the support plate, a pair of support rods are connected to the support plate, the pair of support rods are symmetrically arranged on both sides of the hole, and the pipe passes downward through the hole.

5. The waterway dredging depth detection device according to claim 1, characterized in that: The draft depth detector includes a rectangular shell, a floating body and a scale. The lower end of the rectangular shell is open and vertically fixed to the side of the hull. The floating body is slidably arranged in the rectangular shell. The lower end of the scale is connected to the floating body, and the upper end of the scale vertically passes through the top of the shell.

6. The waterway dredging depth detection device according to claim 5, characterized in that: The draft depth detector also includes a buffer, which is a rectangular box with an opening at the upper end. The lower end of the shell is suspended in the opening through a connecting block. The two sides of the connecting block are respectively connected to the outer wall of the shell and the inner wall of the rectangular box. The connecting block is provided with a water hole.

7. The waterway dredging depth detection device according to claim 1, characterized in that: The upper end of the pipe is also provided with a pressing piece for assisting downward pressure, and the pressing piece includes a pipe sleeve and a handle. The pipe sleeve is arranged on the outer side of the upper end of the pipe, and the position on the pipe sleeve corresponding to the opening of the upper end of the pipe is a hollow structure, and the handle is arranged on both sides of the pipe sleeve.

8. A method for detecting the depth of waterway dredging, characterized in that: Using the channel dredging depth detection device as described in any one of claims 1 to 7, the method comprises the following steps: S1: After the hull reaches the position to be tested, slide the support rod downward until the support plate rests on the mud layer at the bottom of the water, and slide the pipe downward until it is inserted into the mud layer for a certain distance; S2: closing the cover to seal the upper end of the pipe, pulling the pipe out of the base, and if the mud layer material retained in the pipe does not contain the lower layer material of the silt layer, reinserting the pipe into the silt layer, adjusting the pipe insertion depth and repeating step S3 until the lower layer material of the silt layer appears in the pipe; S3: Read the scale value on the support rod to get the distance between the top of the base and the surface of the silt layer , read the scale value on the pipe to get the distance between the top of the base and the bottom of the pipe , read the detection value of the draft depth detector to obtain the hull draft depth ; S4: According to , , Calculate the thickness of silt that needs to be dredged at the current location of the hull and the working depth range of the dredging tools.

9. The method for detecting waterway dredging depth according to claim 8, characterized in that: The following method is used to calculate the silt thickness and the working depth range of the dredging tool: Calculate silt thickness: ; Calculate the operating depth range of dredging tools: , ,in, The minimum depth at which the dredging tool works. The maximum depth of the dredging tool when working. It is the sum of the base height and the thickness of the hull bottom.

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