Desilting method, system and device for lake sediment and electronic equipment

Abstract

The invention relates to the field of environmental protection, and provides a desilting method, system and device for lake bottom mud and electronic equipment.The method comprises the steps that sound waves are emitted to the bottom of a lake, and sound wave signals reflected back by the bottom of the lake are obtained; determining the thickness of lake bottom sludge based on the acoustic signal; and dredging the lake based on the thickness of the sludge at the bottom of the lake. The method is used for overcoming the defect that in the prior art, the desilting thickness cannot be accurately mastered in the desilting process, the thickness and spatial distribution of the sludge at the bottom of the lake can be scientifically and reasonably determined, the desilting project amount is determined, and desilting work is accurately completed.

Description

Technical Field

[0001] The present invention relates to the field of environmental protection technology, and in particular to a method and system, device and electronic equipment for desilting lake bottom mud. Background Art

[0002] A large amount of silt is often deposited at the bottom of lakes, and a large number of microorganisms accumulate in the silt. As the silt continues to accumulate, the water in the lake often becomes turbid and has an odor. In serious cases, it may affect the health of the water body and destroy the ecological balance.

[0003] When dredging the bottom of a lake, the main methods include dry dredging, semi-dry dredging and wet dredging. However, these methods all have the problem of not being able to accurately grasp the dredging thickness. Either the dredging is not thorough enough, which may easily cause repeated pollution in the later period, or the dredging is too deep, destroying the original soil structure at the bottom of the lake, which does not meet the environmental protection requirements. Summary of the invention

[0004] The present invention provides a dredging method for lake bottom mud, which is used to solve the defect in the prior art that the dredging thickness cannot be accurately grasped during the dredging process. The solution of the present application can scientifically and reasonably determine the thickness and spatial distribution of the dredging mud at the bottom of the lake, determine the dredging project volume, and accurately complete the dredging work.

[0005] The present invention provides a method for desilting lake sediment, comprising:

[0006] Send sound waves to the bottom of the lake and obtain the sound wave signals reflected from the bottom of the lake;

[0007] Determine the thickness of lake bottom mud based on acoustic signals;

[0008] Lakes are desilted based on the thickness of silt at the bottom of the lake.

[0009] According to the method for desilting lake bottom mud provided by the present invention, the thickness of the lake bottom mud is determined based on the acoustic wave signal, comprising:

[0010] Preprocessing the sound wave signal, including filtering and denoising;

[0011] Generate point cloud data based on the acoustic wave signal, the point cloud data includes a number of points, each point represents the location information of the bottom of the lake;

[0012] Generate a 3D model of the lake bottom based on point cloud data;

[0013] Determine the thickness of the lake bottom silt based on the 3D stereo model.

[0014] According to the method for desilting lake sediment provided by the present invention, a three-dimensional model of the lake bottom is generated based on point cloud data, including:

[0015] Grid the lake and divide the point cloud data into several areas accordingly;

[0016] Extracting target data from the point cloud data of each area, the target data representing the geological structure of the bottom of the lake;

[0017] Model each region based on target data;

[0018] The models of all areas are spliced ​​together to obtain a three-dimensional model of the bottom of the lake.

[0019] The dredging method for lake sediment provided by the present invention further comprises:

[0020] Sampling and testing of lake bottom mud;

[0021] Determine the spatial stratification of lake bottom mud based on the test results;

[0022] Lakes are desilted based on the spatial stratification of silt at the lake bottom.

[0023] According to the method for dredging lake bottom mud provided by the present invention, dredging the lake is performed based on the thickness of the sludge at the bottom of the lake, comprising:

[0024] Suction is carried out from the bottom of the lake to clean up the silt at the bottom of the lake.

[0025] The present invention also provides a dredging system for lake bottom mud, comprising:

[0026] A signal acquisition module is used to transmit sound waves to the bottom of the lake and obtain the sound wave signals reflected from the bottom of the lake;

[0027] A determination module, for determining the thickness of the silt at the bottom of the lake based on the acoustic wave signal;

[0028] The desilting module is used to desilt the lake based on the thickness of the silt at the bottom of the lake.

[0029] The present invention also provides a dredging device for lake bottom mud, comprising:

[0030] A workstation for performing any of the above-mentioned desilting methods;

[0031] A sonar transmitting sensor is used to transmit sound wave signals under the control of the workstation;

[0032] A sonar receiver for receiving sound wave signals at the control of the workstation;

[0033] The suction dredging component is used to suck the sludge to the designated location under the control of the workstation.

[0034] According to the dredging device for lake bottom mud provided by the present invention, the sonar transmitting sensor can generate a number of data points each time it transmits a sound wave signal.

[0035] According to the dredging device for lake bottom mud provided by the present invention, the sonar receiver includes six lateral receivers and one bottom receiver.

[0036] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, any one of the above-mentioned methods for dredging lake sediments is implemented.

[0037] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the above-mentioned methods for dredging lake sediments.

[0038] The present invention also provides a computer program product, including a computer program, which implements any of the above-mentioned methods for dredging lake sediments when executed by a processor.

[0039] In the dredging method for lake bottom mud provided by the present invention, the thickness of the sludge to be cleared can be accurately determined based on the sound wave signal before dredging, and then accurate dredging work can be carried out based on the determined thickness, thereby avoiding the problems of incomplete dredging and excessive cleaning that damages the soil structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 It is one of the flow diagrams of the dredging method provided in the embodiment of the present invention;

[0042] Figure 2 This is the second flow chart of the dredging method provided by the embodiment of the present invention;

[0043] Figure 3 is one of the schematic diagrams of the three-dimensional model provided by the embodiment of the present invention;

[0044] Figure 4 This is a second schematic diagram of a three-dimensional model provided by an embodiment of the present invention;

[0045] Figure 5 This is a third schematic diagram of a three-dimensional model provided by an embodiment of the present invention;

[0046] Figure 6 This is a fourth schematic diagram of a three-dimensional model provided by an embodiment of the present invention;

[0047] Figure 7 is a fifth schematic diagram of a three-dimensional model provided by an embodiment of the present invention;

[0048] Figure 8 This is the sixth schematic diagram of the three-dimensional model provided by the embodiment of the present invention;

[0049] Fig. 9 is a schematic structural diagram of a dredging system provided by an embodiment of the present invention;

[0050] Fig.10 is a schematic structural diagram of a dredging device provided in an embodiment of the present invention;

[0051] Fig.11 It is a schematic diagram of the physical structure of an electronic device provided by an embodiment of the present invention.

[0052] in:

[0053] 1-Hose; 2-Cleaning rake; 3-Float; 4-Transport pump. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] There are many methods for dredging water bodies in the relevant technology, including dry dredging, semi-dry dredging and wet dredging, among which dry dredging is to divide the river into sections and build cofferdams, and then use water pumps to drain the river water within the cofferdam range. After the water is drained, dredging construction is carried out. Dredging is often carried out along both sides of the river by excavation with a long-arm excavator or manual excavation according to the site conditions of the construction site. The advantages of the dry dredging method are thorough dredging, easy control of dredging depth, high sludge concentration, low transportation cost, and thus relatively low engineering cost. However, the disadvantage is that due to the need for cofferdam drainage, it has a certain impact on the safety of the slope protection on both sides. In addition, the construction will also cause serious damage to the existing engineering facilities on both sides and cause secondary pollution to the surrounding environment. At the same time, the construction also requires partial interruption of the river channel. Therefore, it is not suitable for construction in the rainy season, nor for construction in rivers that are not suitable for interruption. Semi-dry dredging also requires the river channel to be segmented and cofferdams to be built. The difference is that the semi-dry dredging method does not require the river channel to be completely drained, but only to a sufficient mixing depth. The construction method uses a high-pressure water gun to scour and destroy the riverbed silt, and then uses a mud pump to suck and discharge the mud to the silt centralized treatment area. For the slag that cannot be scoured and destroyed at the riverbed, it can be cleaned manually or excavated by a long-arm excavator, and then hoisted to the slag truck for transportation and treatment. The advantages of semi-dry dredging are thorough dredging, easy operation, and easy to cross bridges and other river obstacles. The use of pipelines to transport mud can also avoid secondary pollution during transportation and reduce interference with residents on both sides of the river. The disadvantages are that high-pressure water guns, mud pumps, pressure pumps and other equipment consume a lot of power and have high labor costs. At the same time, the construction also requires partial interruption of the river channel. Therefore, it is not suitable for construction in the rainy season or for river construction that is not suitable for interruption. It can be seen that the semi-dry dredging method is more suitable for dredging of small rivers that are easy to interrupt, and there are certain requirements for the operating space on both sides. Wet dredging does not require cofferdam drainage. Dredging machinery is used for dredging construction in a water environment. According to the working device, chassis and structural form, typical small wet machinery can be divided into: mechanical, hydraulic, and pneumatic pump. Among them, the mechanical type can be divided into bucket type and chain bucket type. The hydraulic type can be divided into suction type, rake suction type, suction cup type and jet type, but the wet dredging machinery generally has the disadvantages of discontinuous work, low dredging efficiency, poor cleaning effect of fluid sludge, complicated mud transportation process, high power consumption, high working noise, high cost of use, and easy to produce bottom mud diffusion during construction. Hydraulic machinery generally has the disadvantages of poor self-propulsion ability, limited excavation depth, small applicable soil range, harsh working environment, and sensitivity to water flow and waves. Although the pneumatic pump type has the advantages of avoiding secondary pollution and being beneficial to ecological protection, the technology is not yet mature and can only be used for local dredging, which is not convenient for large-scale expansion.

[0056] In summary, the existing dredging technology is not scientific and rational enough during the dredging process due to the unclear understanding of the formation mechanism of lake sediment pollution, which can easily cause repeated pollution in the later stage; it relies on manual labor, has low work efficiency, low intelligence, and low survey accuracy. The survey of lake sludge dredging thickness and river body liquid level is difficult and inaccurate; the existing technology does not carry out ecological subsequent treatment and disposal of river sludge, which poses a risk of secondary pollution. It does not meet environmental protection requirements. Based on this, the scheme of this application proposes a new dredging method for lake sediment, which is as follows.

[0057] like Figure 1 As shown, this embodiment provides a method for dredging lake sediment, comprising:

[0058] Step 101, transmitting sound waves to the bottom of the lake, and acquiring sound wave signals reflected from the bottom of the lake;

[0059] Step 102, determining the thickness of the silt at the bottom of the lake based on the acoustic wave signal;

[0060] Step 103, desilting the lake based on the thickness of the silt at the bottom of the lake.

[0061] Sonar (Sound Navigation And Ranging, SONAR) is a technology that uses the propagation and reflection characteristics of sound waves in water to navigate and measure distance through electro-acoustic conversion and information processing.

[0062] The lake bottom refers to the solid part of the lake below the water surface. The lake bottom has both silt and normal soil structure.

[0063] The thickness of the silt in this embodiment refers to the height of the silt layer above the soil layer at the bottom of the lake. Furthermore, dredging the lake based on the thickness of the silt refers to removing all the silt at the bottom of the lake according to the determined thickness.

[0064] The scheme of this embodiment uses the "hydrosonar" technology. Different from single-point sonar and multi-beam sonar equipment, "hydrosonar" adopts the principle of coherent measurement, and periodically transmits an ultrasonic pulse with a small opening angle (about 1.5°) in the direction of the survey ship's navigation, and a large opening angle (120°) in the direction perpendicular to the heading to both sides of the survey ship's heading. The receiving time of the first three receiving sensors depends on the positional relationship between it and the transmitter, and the position of the target point is obtained by calculating the phase difference between different receivers. The last sensor collects the echo data directly below, and it is also used to correct the data on both sides. It should be specially noted that each receiver of the "hydrosonar" receives the phase of the diffraction wave passing through the target point, rather than the reflected wave of the target point received by the single-point sonar or multi-beam sonar. This also determines the huge difference between the two in their ability to reflect the real topography of complex terrain.

[0065] Because of its completely different working principle from multi-beam, the average resolution of the data on both sides is more than 100 times that of multi-beam, and the average lateral resolution is 5 centimeters. Such high-resolution data, combined with software processing, provides a basis for the survey accuracy of the data on both sides; secondly, the coherent measurement technology itself guarantees a high measurement accuracy; thirdly, it uses the middle single-point bathymetric data to correct the data on both sides, effectively compensating for the system error. This ensures the data accuracy on the entire cross section and provides a basis for drawing high-precision lake topography and three-dimensional distribution maps of the lake body liquid level.

[0066] In related technologies, it is precisely because of the inaccurate grasp of the thickness of the silt at the bottom of the lake that the problem of incomplete dredging or excessive dredging occurs. Carrying out precise dredging work based on the determined thickness of the silt at the bottom of the lake can avoid the problems of incomplete dredging and excessive dredging that damages the soil structure.

[0067] In an exemplary embodiment, determining the thickness of the silt at the bottom of a lake based on the acoustic wave signal includes:

[0068] Preprocessing the sound wave signal, including filtering and denoising;

[0069] Generate point cloud data based on the acoustic wave signal, the point cloud data includes a number of points, each point represents the location information of the bottom of the lake;

[0070] Generate a 3D model of the lake bottom based on point cloud data;

[0071] Determine the thickness of the lake bottom silt based on the 3D stereo model.

[0072] In an exemplary embodiment, generating a three-dimensional model of the bottom of a lake based on point cloud data includes:

[0073] Grid the lake and divide the point cloud data into several areas accordingly;

[0074] Extracting target data from the point cloud data of each area, the target data representing the geological structure of the bottom of the lake;

[0075] Model each region based on target data;

[0076] The models of all areas are spliced ​​together to obtain a three-dimensional model of the bottom of the lake.

[0077] In an exemplary embodiment, it further includes:

[0078] Sampling and testing of lake bottom mud;

[0079] Determine the spatial stratification of lake bottom mud based on the test results;

[0080] Lakes are desilted based on the spatial stratification of silt at the lake bottom.

[0081] In practical applications, a grid-like distribution method can also be used for the silt at the bottom of the lake. Sampling points can be evenly distributed and sampled with a professional tubular sampler. The samples collected are prepared and pretreated in accordance with regulations. The samples are then analyzed according to relevant quality evaluation standards to determine the spatial stratification of the silt at the bottom of the lake. The lake is then dredged based on the spatial stratification of the silt at the bottom of the lake.

[0082] In an exemplary embodiment, desilting a lake based on the thickness of the silt at the bottom of the lake includes:

[0083] Suction is carried out from the bottom of the lake to clean up the silt at the bottom of the lake.

[0084] In practice, the dredging of the bottom of the lake can be done by pipe suction. After the pipe is inserted into the bottom of the silt, the silt is sucked away. In practice, the dredging of the bottom of the lake uses micro-disturbance silt suction technology and equipment. The sludge can be gently sucked to a designated location on the shore by remote control without draining the river. The sludge suction device can freely adjust the sludge suction depth, with a control range of 0.1 to 7.0 m. The entire dredging process is fast, thorough, hygienic and clean. And there will be no or only a very small amount of odor during the sludge cleaning process. Through the gentle suction cleaning method, the bottom sludge will not produce turbulence, so it will not pollute the river water body, nor will it cause damage to the surrounding environmental ecological system.

[0085] like Figure 2 As shown, a specific embodiment is used below to illustrate the dredging method provided by the solution of the present application.

[0086] In this embodiment, water sonar technology is applied. In this embodiment, a high-precision, portable sonar system for underwater topographic survey in shallow water conditions below about 100 meters is applied, with a transmission frequency of 156kHz and 100kHz, a maximum bandwidth of 300m, and a resolution of 5 cm perpendicular to the heading direction. The system adopts interferometric measurement technology, that is, the target position is determined by measuring the phase difference. The system also provides real-time display of underwater topographic maps and records amplitude signals when used as a side-scan sonar. In terms of hardware, the latest digital data transmission technology is used to draw high-precision lake topography and three-dimensional distribution maps of lake body liquid level height, determine underwater topography and water depth, and improve the resolution, accuracy, efficiency and amplitude measurement of the survey.

[0087] Combined with high-precision lake topographic data and gridded sediment sampling analysis results, the spatial distribution of organic matter, the distribution of organic matter content at different depths, and the distribution of solid matter content are determined, and a high-precision spatial and vertical distribution map of lake sediment organic matter content is drawn. Ultimately, the three-dimensional distribution of sediment dredging thickness is determined, based on which the maximum power of the equipment and the suction distance can be determined.

[0088] After that, the silt can be gently sucked from the bottom of the lake to a designated location on the shore by remote control. The entire dredging process is fast, thorough, sanitary and clean. Through the gentle suction cleaning method, the bottom silt will not produce turbulence, so it will not pollute the river water. The sludge suction depth is a key factor in determining the degree of dredging disturbance and its impact on the water quality of the overlying water body of the lake. The sludge suction depth in this embodiment can be freely adjusted. According to the thickness of the silt survey, the sludge suction depth control range is 0.1 to 7.0m, thereby achieving high-precision survey, intelligent underwater suction and accurate calculation of dredging volume.

[0089] in Figure 3 and Figure 4 This example shows a 3D model based on a lake in area A. Figure 5 and Figure 6 This example shows a three-dimensional model based on a lake in area B. Figure 7 and Figure 8 The following example shows a three-dimensional model constructed based on a lake in area C.

[0090] Area A and Area B are the Bawei Bridge Wetland Park, located in the Weihe River beach area east of the Bahe River entering the Weihe River in Xi'an. It is 5.5km long from east to west, 0.8km wide from north to south, and has a total area of ​​4.4km. 2 , water area 1.6km 2After the underwater topography survey of the park, due to the special conditions of the park's waters and the draft depth limit of the survey ship, the survey ship could only survey waters with a depth of more than 0.7m. Therefore, it took 6 hours to complete the field data collection of the underwater topography and obtain the three-dimensional models of the waters in different areas of the park, namely area A and area B.

[0091] Area C is Linghe Reservoir, located 1.5 km south of Lingkou Town, Lintong District, Xi'an City, Shaanxi Province. It is a medium-sized reservoir with a water area of ​​about 0.9 km 2 After underwater topographic survey, it was found that the area near the reservoir inlet was a shallow area with a maximum wading depth of no more than 10 cm, so the survey ship could not operate normally. Therefore, it took 14 hours to complete the underwater topographic data collection outside the water inlet area and construct the Figure 7 and Figure 8 The three-dimensional model of the surveyed water area is 0.84km 2 .

[0092] The dredging system for lake bottom mud provided by the present invention is described below. The dredging system for lake bottom mud described below and the dredging method for lake bottom mud described above can be referred to each other.

[0093] like Fig. 9 As shown, the dredging system in this embodiment includes:

[0094] The signal acquisition module 901 is used to transmit sound waves to the bottom of the lake and obtain the sound wave signals reflected from the bottom of the lake;

[0095] A determination module 902, for determining the thickness of the silt at the bottom of the lake based on the acoustic wave signal;

[0096] The desilting module 903 is used to desilt the lake based on the thickness of the silt at the bottom of the lake.

[0097] In an exemplary embodiment, the determination module 902 is further configured to:

[0098] Preprocessing the sound wave signal, including filtering and denoising;

[0099] Generate point cloud data based on the acoustic wave signal, the point cloud data includes a number of points, each point represents the location information of the bottom of the lake;

[0100] Generate a 3D model of the lake bottom based on point cloud data;

[0101] Determine the thickness of the lake bottom silt based on the 3D stereo model.

[0102] In an exemplary embodiment, the determination module 902 is further configured to:

[0103] Grid the lake and divide the point cloud data into several areas accordingly;

[0104] Extracting target data from the point cloud data of each area, the target data representing the geological structure of the bottom of the lake;

[0105] Model each region based on target data;

[0106] The models of all areas are spliced ​​together to obtain a three-dimensional model of the bottom of the lake.

[0107] In an exemplary embodiment, a sampling detection module is also included, and the sampling detection module is specifically used to:

[0108] Sampling and testing of lake bottom mud;

[0109] Determine the spatial stratification of lake bottom mud based on the test results;

[0110] Lakes are desilted based on the spatial stratification of silt at the lake bottom.

[0111] In an exemplary embodiment, the desilting module 903 is also used to:

[0112] Suction is carried out from the bottom of the lake to clean up the silt at the bottom of the lake.

[0113] The specific implementation method of the dredging system for lake bottom mud provided in this embodiment can be implemented with reference to the above-mentioned embodiment, and will not be described in detail here.

[0114] The dredging device provided in this embodiment includes:

[0115] A workstation for performing any of the above-mentioned desilting methods;

[0116] A sonar transmitting sensor is used to transmit sound wave signals under the control of the workstation;

[0117] A sonar receiver for receiving sound wave signals at the control of the workstation;

[0118] The suction dredging component is used to suck the sludge to the designated location under the control of the workstation.

[0119] In an exemplary embodiment, the sonar transmitting sensor may generate several data points each time it transmits a sound wave signal, which may improve the efficiency of data collection.

[0120] In an exemplary embodiment, the sonar receiver includes six lateral receivers and one bottom receiver, which can improve the efficiency of data reception and improve the resolution and survey accuracy.

[0121] In actual applications, the dredging device may include two sonar transmitting sensors, six lateral receivers and one downward receiver, as well as an underwater electronic processing device, a mounting bracket, a sonar workstation, RTK-GPS (real-time dynamic carrier phase differential technology-global positioning system), a three-dimensional motion sensor and a high-precision compass.

[0122] The sonar transmitting sensor in this embodiment can generate more than 1,300 raw data points each time it sends a sonar pulse. The huge amount of data can be used to generate a very detailed underwater terrain data set, thereby constructing a very accurate data terrain map.

[0123] The high-precision three-dimensional distribution map of lake topography and lake liquid level drawn in this embodiment has an average lateral resolution of more than 5 cm. It adopts the working principle of sonar and has strong adaptability to complex underwater terrain. The extremely high-resolution data, combined with software processing, can ensure the accuracy of the survey. The dual-frequency coherent survey technology is used to ensure the data accuracy of the entire cross section.

[0124] In practical applications, the transmission angle of each sonar-activated sensor in this embodiment is greater than 120 degrees, which can increase the data collection range and measurement amplitude, thereby improving the survey efficiency of the dredging device in ultra-shallow waters.

[0125] The silt suction component can directly suck the silt from the river body. No or only a very small amount of odor will be produced during the silt cleaning process, and it will not cause damage to the surrounding plant ecosystem. The entire dredging process is fast, thorough, hygienic and clean. Fig.10 As shown, the sludge suction assembly includes a water pump and a set of pressure-resistant hose system, which can transport sludge or mud-water mixture to a designated location on the shore for subsequent treatment and processing. Not only that, the hose 1 can also be used as a cable carrier to power the driving components on the sludge suction assembly. The length of the pressure-resistant hose can reach 300 meters, so during use, the operator can set the distance of the hose 1 according to actual conditions. In actual application, in order to facilitate the monitoring and maintenance of the sludge suction assembly, a buoy 3 is set to ensure that the sludge suction assembly floats on the water surface.

[0126] In actual application, the pressure-resistant hose system can be carried and moved by the suction dredging assembly. When the bottom sludge is being sucked and processed, the suction dredging assembly sinks, the screw starts to run, and the sludge suction cleaning begins. By controlling the rise and fall of the cleaning rake 2, not only the bottom sludge but also the floating mud and blue algae on the surface of the water body can be sucked out.

[0127] Generally speaking, the suction dredging assembly provided in this embodiment can be applied to a still river surface. If used in a flowing river, the flow rate of the river water should not exceed 0.2 m / s, and the river liquid level is required to be within the range of 0.8 to 3.5 m.

[0128] In practice, the suction and dredging assembly can be remotely operated on the shore, and only one person is needed to control the following equipment functions: driving components of various moving directions; on / off control of the transport pump 4; raising / lowering control of the cleaning rake 2; on / off control of the transport screw; and operation of the buoy. In addition, the silt suction device can also be equipped with lighting for night operation.

[0129] like Fig.11 As shown, the electronic device may include: a processor 1110, a communication interface 1120, a memory 1130 and a communication bus 1140, wherein the processor 1110, the communication interface 1120 and the memory 1130 communicate with each other through the communication bus 1140. The processor 1110 may call the logic instructions in the memory 1130 to execute a method for desilting lake sediment, the method comprising:

[0130] Send sound waves to the bottom of the lake and obtain the sound wave signals reflected from the bottom of the lake;

[0131] Determine the thickness of lake bottom mud based on acoustic signals;

[0132] Lakes are desilted based on the thickness of silt at the bottom of the lake.

[0133] In addition, the logic instructions in the above-mentioned memory 1130 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0134] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the dredging method for lake sediment provided by the above methods, which includes:

[0135] Send sound waves to the bottom of the lake and obtain the sound wave signals reflected from the bottom of the lake;

[0136] Determine the thickness of lake bottom mud based on acoustic signals;

[0137] Lakes are desilted based on the thickness of silt at the bottom of the lake.

[0138] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented when the computer program is executed by a processor to perform the dredging method for lake sediment provided by the above methods, the method comprising:

[0139] Send sound waves to the bottom of the lake and obtain the sound wave signals reflected from the bottom of the lake;

[0140] Determine the thickness of lake bottom mud based on acoustic signals;

[0141] Lakes are desilted based on the thickness of silt at the bottom of the lake.

[0142] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0143] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiment.

[0144] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for desilting lake sediment, characterized in that: include: Transmitting sound waves to the bottom of a lake, and acquiring sound wave signals reflected from the bottom of the lake; Determining the thickness of the silt at the bottom of the lake based on the acoustic wave signal; The lake is desilted based on the thickness of the silt at the bottom of the lake.

2. The method for desilting lake sediment according to claim 1, characterized in that: Determining the thickness of the silt at the bottom of the lake based on the sound wave signal comprises: Preprocessing the acoustic wave signal, wherein the preprocessing includes filtering and denoising; Generating point cloud data based on the acoustic wave signal, wherein the point cloud data includes a plurality of points, each of which represents position information of the bottom of the lake; Generating a three-dimensional model of the bottom of the lake based on the point cloud data; The thickness of the silt at the bottom of the lake is determined based on the three-dimensional model.

3. The method for desilting lake sediment according to claim 2, characterized in that: The step of generating a three-dimensional model of the bottom of the lake based on the point cloud data comprises: Gridding the lake, and accordingly dividing the point cloud data into a plurality of regions; Extracting target data from the point cloud data of each region, the target data representing the geological structure of the bottom of the lake; Modeling each region based on the target data; The models of all areas are spliced ​​together to obtain a three-dimensional model of the bottom of the lake.

4. The method for desilting lake sediment according to claim 1, characterized in that: Also includes: Sampling and testing the silt at the bottom of the lake; Determine the spatial stratification of the silt at the bottom of the lake based on the detection results; The lake is desilted based on the spatial stratification of the silt at the bottom of the lake.

5. The method for desilting lake sediment according to claim 1, characterized in that: Desilting the lake based on the thickness of the silt at the bottom of the lake comprises: Suction is performed from the bottom of the lake to clean the silt at the bottom of the lake.

6. A desilting system for lake sediment, characterized in that: include: A signal acquisition module, used for transmitting sound waves to the bottom of the lake and acquiring the sound wave signals reflected back from the bottom of the lake; A determination module, used to determine the thickness of the silt at the bottom of the lake based on the acoustic wave signal; The dredging module is used to dredge the lake based on the thickness of the silt at the bottom of the lake.

7. A desilting device for lake sediment, characterized in that: include: A workstation for performing the dredging method according to any one of claims 1 to 5; A sonar transmitting sensor, used for transmitting sound wave signals under the control of the workstation; A sonar receiver for receiving acoustic signals at the control of the workstation; The suction dredging component is used to suck the sludge to a designated location under the control of the workstation.

8. The desilting device for lake bottom mud according to claim 7, characterized in that: The sonar transmitting sensor can generate several data points each time it transmits a sound wave signal.

9. The desilting device for lake bottom mud according to claim 7, characterized in that: The sonar receiver includes six lateral receivers and one bottom receiver.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the dredging method for lake bottom mud as described in any one of claims 1 to 5 is implemented.

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