A waterway area dredging construction supervision system and supervision method

Abstract

The present invention relates to the technical field of dredging construction supervision, and specifically discloses a dredging construction supervision system and a supervision method for a waterway area, wherein the supervision method comprises the following steps: S1: obtaining the construction degree of a target waterway within a collection period; S2: calculating the mean value of the construction degree, and starting from the starting point of the target waterway, setting a number of distance points with the mean value of the construction degree as an interval; determining the impact range of the dredging construction of the target waterway between two adjacent distance points; S3: determining the number of people within the impact range, and determining the noise range according to the number of people within the impact range, and determining the standard construction time range. The present invention can adjust the time for dredging construction of the target waterway within the noise range, thereby reducing the impact of noise on people during the dredging construction process.

Description

Technical Field

[0001] The present invention relates to the technical field of dredging construction supervision, and in particular to a dredging construction supervision system and a supervision method for a waterway area. Background Art

[0002] A waterway area refers to a specific area of ​​water or a channel that ships need to pass through during navigation. These areas are usually carefully planned and marked to ensure that ships can pass through safely and efficiently. Dredging construction refers to the engineering activities of digging and removing mud, silt, rocks and other sediments from rivers, lakes, ports, waterways and other waters by using specialized machinery and equipment. Its main purpose is to maintain or increase the depth of the water body, ensure the smooth flow of waterways and the safe navigation of ships, and also help prevent floods, prevent siltation and improve water quality.

[0003] The dredging construction process is usually accompanied by loud noises, which may come from the following aspects, such as dredging equipment: the dredging equipment on the dredger will generate a lot of mechanical noise during the process of digging, cutting, sucking and discharging mud. Different types of dredgers (such as suction dredgers, rake suction dredgers, grab bucket dredgers, etc.) have different types and intensities of noise; ship engines: the engines and auxiliary equipment of dredgers (such as generators, pumps, etc.) will generate continuous mechanical noise and vibration noise when working.

[0004] In actual situations, there may be residential areas close to the dredging construction site, which will cause the residential area to be constantly affected by noise. Long-term exposure to high-noise environments will have a negative impact on people's physical health, such as hearing loss, sleep disorders, increased stress, etc. Therefore, it is very important to reduce the impact of noise during dredging construction on people. Summary of the invention

[0005] The purpose of the present invention is to provide a channel area dredging construction supervision system and supervision method to solve the above technical problems.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A method for supervising dredging construction in a waterway area comprises the following steps:

[0008] S1: Set p collection cycles, where p is a preset number, and obtain the construction degree of the target waterway within the collection cycle, where the construction degree is the length of the target waterway that has completed dredging construction, and the target waterway is the waterway that needs dredging construction;

[0009] S2: Calculate the mean value D of the construction degree, and set a number of distance points starting from the starting point of the target waterway with the mean value D of the construction degree as an interval;

[0010] Obtain an electronic map of the preset monitoring area, and establish a coordinate system with the starting point of the target channel in the electronic map as the origin, and obtain the coordinates of the i-th distance point (x i ,y i ) and the next adjacent distance point (x i+1 ,y i+1 );

[0011] Determine the impact range A of dredging construction between the i-th distance point and the next adjacent distance point i+1 i ;

[0012] S3: Determine the number of people within the impact range, and determine the noise range according to the number of people within the impact range, the noise range is the impact range that requires adjustment of the dredging construction time, and determine the standard construction time range, the standard construction time range is the time range for dredging construction on the target waterway within the noise range.

[0013] As a further solution of the present invention: in the step S1, after determining the bth distance point, when the distance between the bth distance point and the end point of the target waterway is less than the mean value D of the construction degree, the end point of the target waterway is taken as the b+1th distance point.

[0014] As a further solution of the present invention: in step S2, the influence range A i The following constraints are met:

[0015] ;

[0016] in ;

[0017] ; ;

[0018] h left (x) satisfies the constraints: ;

[0019] L left (x) satisfies the constraints: , ∆x=sinθ*R, θ represents the target curve f between the i-th distance point and the next adjacent distance point i+1 i (x) is the angle between the tangent line and the x-axis, R represents the preset influence distance, ∆y=cosθ*R;

[0020] f u (x) satisfies the constraints: ;

[0021] f v (x) satisfies the constraints: ;

[0022] h right (x) satisfies the constraints: ;

[0023] L right (x) satisfies the constraints: .

[0024] As a further solution of the present invention: obtaining the target curve f between the i-th distance point and the next adjacent distance point i+1 i The process of (x) specifically includes:

[0025] The target channel between the i-th distance point and the next adjacent distance point i+1 is used as a point-taking channel, and a number of geographical points are selected at preset distance intervals on the point-taking channel;

[0026] The geographical points are fitted, and the fitting formula is f(x), the target curve between the i-th distance point and the next adjacent distance point i+1 is f i (x).

[0027] As a further solution of the present invention: the process of obtaining the influence distance R specifically includes:

[0028] The noise S during the dredging construction process is periodically obtained at the preset position, and the variance S of the noise is calculated var ;

[0029] When the variance of the noise S var ≥S var ', generate the noise set S jh = (S1, S2, …, S n ), S n represents the noise during the dredging construction process obtained for the nth time, S var ' represents the preset variance threshold;

[0030] Remove the maximum noise S max =max (Sjh) and minimum noise S min (S jh ), and recalculate the variance of the noise S var , until the variance of the noise S var <S var ', and calculate the mean value S of the noise at this time ave ;

[0031] Calculate the falloff distance , where S bz Indicates the preset noise threshold;

[0032] The influence distance R is calculated as α*r, where α is a preset attenuation distance correction value and α<1.

[0033] As a further solution of the present invention: Calculate the mean value S of the noise ave In the process, when the difference between a certain noise c and the mean value of the noise is greater than or equal to a preset noise difference threshold, the noise c is removed and the mean value S of the noise is recalculated. ave .

[0034] As a further solution of the present invention: in the step S3, the process of determining the noise range according to the number of people within the affected range specifically includes:

[0035] m statistical periods are set, where m is a preset value, and a number of time nodes are set at preset time intervals TJG within the statistical period to count the number of people in the affected area at each time node;

[0036] Calculate the mean of the number of people at the same time node as the number of people Q at that time node, and draw a curve g(t) showing the change of the number of people over time. When the maximum number of people Qmax=max(g(t))≥Q', take the corresponding impact range as the noise range, and Q' represents the preset number threshold.

[0037] As a further solution of the present invention: in step S3, the process of determining the standard construction time range specifically includes:

[0038] Draw a straight line passing through the number of people Q' on the y-axis and parallel to the x-axis as a reference line, take the intersection of the reference line and the curve of the number of people changing with time as a reference point, take the curve of the number of people changing with time between two adjacent reference points as a pending curve, and take the curve below the reference line in the pending curve as an adjustment curve;

[0039] Get the time range F corresponding to the kth adjustment curve k =[TSTA k ,TEND k ], TSTA k Indicates the time point when the kth adjustment curve starts, TEND k Indicates the time point at which the kth adjustment curve ends, generating a time range set FJH=(F1,F2,…,F m );

[0040] An initial construction time range SGF is set, and a standard construction time range SGB=SGF∩FJH is determined, and dredging construction is performed on the target waterway within the noise range within the standard construction time range.

[0041] A waterway area dredging construction supervision system, comprising:

[0042] Data collection module: set p collection cycles, where p is a preset number, and obtain the construction degree of the target waterway within the collection cycle, where the construction degree is the length of the target waterway that has completed dredging construction, and the target waterway is the waterway that needs dredging construction;

[0043] Impact area determination module: calculates the mean value D of the construction degree, and sets a number of distance points starting from the starting point of the target waterway with the mean value D of the construction degree as an interval;

[0044] Obtain an electronic map of the preset monitoring area, and establish a coordinate system with the starting point of the target channel in the electronic map as the origin, and obtain the coordinates of the i-th distance point (x i ,y i ) and the next adjacent distance point (x i+1 ,y i+1 );

[0045] Determine the impact range A of dredging construction between the i-th distance point and the next adjacent distance point i+1 i ;

[0046] Construction time determination module: determine the number of people within the impact range, and determine the noise range based on the number of people within the impact range, the noise range is the impact range that needs to adjust the dredging construction time, and determine the standard construction time range, the standard construction time range is the time range for dredging construction on the target waterway within the noise range.

[0047] Beneficial effects of the present invention: In the present invention, firstly, p collection cycles are set, and time periods are set in the collection cycles for the subsequent calculation of the construction degree in each time period; it can be understood that the collection cycle is a preset time range for dredging construction within one day, which is to prevent the time when no dredging construction is carried out from being used as the basis for calculating the mean value of the construction degree, resulting in a smaller mean value of the subsequent construction degree, thereby affecting the determination of the subsequent impact range, p is a preset number, and p>10, which is to ensure that the subsequent calculation of the construction degree will not be wrong due to the small number of data samples, and the specific value of p can be set by experience; then the mean value of the construction degree is calculated, and the distance point is determined according to the mean value of the construction degree, and the distance between two adjacent distance points is determined according to the distance between the two adjacent distance points. Influence range; It should be noted that the monitoring area is the area where the target waterway is located; It is worth noting that the distance between two adjacent distance points can be regarded as the length that the dredging construction can complete within one day, and the distance points are determined according to the average value of the construction degree, and the influence range is determined according to the distance points, which can prevent the situation where the noise affects the people near the next position when the dredging construction is carried out to the next position of the target waterway. The dredging construction process within one day is taken into consideration to minimize the noise impact caused by the dredging construction; It should be noted that the determination of the influence range is based on the attenuation of the noise propagation process. According to acoustic theory, the noise will gradually attenuate when it propagates in the air. The farther away from the noise source, the lower the noise intensity. Therefore, the noise is calculated when it is attenuated to S bz The required distance is the attenuation distance r, S bz Determined by experience and actual conditions, such as residential area noise, which cannot exceed 55 decibels during the day and should be lower than 45 decibels at night. At the same time, considering that noise may decay faster due to other factors during the propagation process, the attenuation distance is corrected by α to obtain the distance and determine the impact range. α can be calibrated by experiment or obtained by experience. Finally, the noise range is determined according to the number of people, and the time of dredging construction within the noise range is adjusted to avoid dredging construction on the target waterway within the noise range when the number of people is large, thereby reducing the impact of noise during dredging construction on people. The present invention can adjust the time for dredging construction of the target waterway within the noise range, thereby reducing the impact of noise during dredging construction on people. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The present invention will be further described below in conjunction with the accompanying drawings.

[0049] Figure 1 The present invention is a flowchart of a method for supervising dredging construction in a waterway area. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0051] See also Figure 1 As shown, the present invention is a method for supervising dredging construction in a waterway area, comprising the following steps:

[0052] S1: Set p collection cycles, where p is a preset number, and obtain the construction degree of the target waterway within the collection cycle, where the construction degree is the length of the target waterway that has completed dredging construction, and the target waterway is the waterway that needs dredging construction;

[0053] S2: Calculate the mean value D of the construction degree, and set a number of distance points starting from the starting point of the target waterway with the mean value D of the construction degree as an interval;

[0054] Obtain an electronic map of the preset monitoring area, and establish a coordinate system with the starting point of the target channel in the electronic map as the origin, and obtain the coordinates of the i-th distance point (x i ,y i ) and the next adjacent distance point (x i+1 ,y i+1 );

[0055] Determine the impact range A of dredging construction between the i-th distance point and the next adjacent distance point i+1 i ;

[0056] S3: Determine the number of people within the impact range, and determine the noise range according to the number of people within the impact range, the noise range is the impact range that requires adjustment of the dredging construction time, and determine the standard construction time range, the standard construction time range is the time range for dredging construction on the target waterway within the noise range.

[0057] It should be noted that first, p collection cycles are set, and time periods are set in the collection cycles for the subsequent calculation of the construction degree in each time period; it can be understood that the collection cycle is a pre-set time range for dredging construction within one day, which is to prevent the time when no dredging construction is carried out from being used as the basis for calculating the mean value of the construction degree, resulting in a smaller mean value of the subsequent construction degree, thereby affecting the determination of the subsequent impact range, p is a preset number, and p>10, which is to ensure that the subsequent calculation of the construction degree will not be due to a small number of data samples. The specific value of p can be set by experience; then the mean value of the construction degree is calculated, and the distance point is determined based on the mean value of the construction degree, and the impact range between two adjacent distance points is determined based on the distance point. ; It should be noted that the monitoring area is the area where the target waterway is located; It is worth noting that the distance between two adjacent distance points can be regarded as the length that the dredging construction can complete within one day, and the distance points are determined according to the mean value of the construction degree, and the influence range is determined according to the distance points, which can prevent the situation where the noise affects the people near the next position when the dredging construction reaches the next position of the target waterway. The dredging construction process within one day is taken into consideration to minimize the noise impact caused by the dredging construction; It should be noted that the determination of the influence range is based on the attenuation of the noise propagation process. According to acoustic theory, the noise will gradually attenuate when it propagates in the air. The farther away from the noise source, the lower the noise intensity. Therefore, the noise is calculated when it is attenuated to S bz The required distance is the attenuation distance r, S bz It is determined by experience and actual conditions. For example, the noise in residential areas cannot exceed 55 decibels during the day and should be lower than 45 decibels at night. At the same time, considering that the noise may decay faster due to other factors during the propagation process, the attenuation distance is corrected by α to obtain the distance and determine the impact range. α can be calibrated by experiments or obtained by experience. Finally, the noise range is determined according to the number of people, and the time of dredging construction within the noise range is adjusted to avoid dredging construction on the target waterway within the noise range when there are a large number of people, thereby reducing the impact of noise during dredging construction on people.

[0058] In another preferred implementation of the present invention, in the step S1, after determining the bth distance point, when the distance between the bth distance point and the end point of the target waterway is less than the mean value D of the construction degree, the end point of the target waterway is taken as the b+1th distance point.

[0059] It is worth noting that when the distance between the bth distance point and the end point of the target channel is less than the mean D of the construction degree, continuing to divide by the mean D will no longer be able to establish a new complete distance point, and the expected construction degree D is the construction degree that can be completed under ideal conditions. Even if the remaining length is placed between distance points b-1 and b, it cannot be completed within one day. Therefore, the end point of the target channel is taken as the b+1th distance point, and the remaining length is taken as the construction degree between distance points b and b+1.

[0060] In another preferred embodiment of the present invention, in step S2, the influence range A i The following constraints are met:

[0061] ;

[0062] in ;

[0063] ; ;

[0064] h left (x) satisfies the constraints: ;

[0065] L left (x) satisfies the constraints: , ∆x=sinθ*R, θ represents the target curve f between the i-th distance point and the next adjacent distance point i+1 i (x) is the angle between the tangent line and the x-axis, R represents the preset influence distance, ∆y=cosθ*R;

[0066] f u (x) satisfies the constraints: ;

[0067] f v (x) satisfies the constraints: ;

[0068] h right (x) satisfies the constraints: ;

[0069] L right (x) satisfies the constraints: .

[0070] It should be noted that Zone left and Zone right The premise for satisfying the above constraints is that the slope of the i-th distance point and the i+1-th distance point is greater than or equal to 0;

[0071] When the slope of the i-th distance point is less than 0, Zone left Satisfy the constraints: ;

[0072] When the slope of the i+1th distance point is less than 0, Zone right Satisfy the constraints:

[0073] .

[0074] In another preferred embodiment of the present invention, the target curve f between the i-th distance point and the next adjacent distance point i+1 is obtained. i The process of (x) specifically includes:

[0075] The target channel between the i-th distance point and the next adjacent distance point i+1 is used as a point-taking channel, and a number of geographical points are selected at preset distance intervals on the point-taking channel;

[0076] The geographical points are fitted, and the fitting formula is f(x), the target curve between the i-th distance point and the next adjacent distance point i+1 is f i (x).

[0077] It is understandable that during the channel dredging construction process, the shape and path of the channel are usually not straight lines, but have complex geometric shapes. By selecting several geographical points and performing curve fitting, the actual shape and path of the channel can be accurately reflected. At the same time, selecting geographical points at preset distance intervals and performing curve fitting can reduce errors caused by measurement or data collection, ensuring that the fitting curve is closer to the actual channel shape.

[0078] In another preferred implementation of the present invention, the process of obtaining the influence distance R specifically includes:

[0079] The noise S during the dredging construction process is periodically obtained at the preset position, and the variance S of the noise is calculated var ;

[0080] When the variance of the noise S var ≥S var ', generate the noise set S jh = (S1, S2, …, S n ), S n represents the noise during the dredging construction process obtained for the nth time, S var ' represents the preset variance threshold;

[0081] Remove the maximum noise S max =max (Sjh) and minimum noise S min (S jh ), and recalculate the variance of the noise S var , until the variance of the noise S var <Svar ', and calculate the mean value S of the noise at this time ave ;

[0082] Calculate the falloff distance , where S bz Indicates the preset noise threshold;

[0083] The influence distance R is calculated as α*r, where α is a preset attenuation distance correction value and α<1.

[0084] It should be noted that recalculating the variance and mean after removing extreme values ​​can more accurately reflect the typical noise level, while using acoustic formulas to calculate the attenuation distance and impact range can help to effectively control and manage the impact of dredging construction noise on the environment.

[0085] In another preferred embodiment of the present invention, the mean value S of the noise is calculated. ave In the process, when the difference between a certain noise c and the mean value of the noise is greater than or equal to a preset noise difference threshold, the noise c is removed and the mean value S of the noise is recalculated. ave .

[0086] It should be noted that in the actual noise measurement process, some outliers (such as sudden noise or erroneous measurement values) may appear. These outliers will significantly deviate from the normal noise level. By removing these outliers and recalculating the noise mean, the actual noise level can be more accurately reflected, thereby improving the stability of the data and making the final result more reliable.

[0087] In another preferred implementation of the present invention, in step S3, the process of determining the noise range according to the number of people within the affected range specifically includes:

[0088] m statistical periods are set, where m is a preset value, and a number of time nodes are set at preset time intervals TJG within the statistical period to count the number of people in the affected area at each time node;

[0089] Calculate the mean of the number of people at the same time node as the number of people Q at that time node, and draw a curve g(t) showing the change of the number of people over time. When the maximum number of people Qmax=max(g(t))≥Q', take the corresponding impact range as the noise range, and Q' represents the preset number threshold.

[0090] It is understandable that when the maximum number of people is less than the number threshold, there is no need to adjust the dredging construction time of the target waterway within the impact range. However, if the maximum number of people is greater than or equal to the number threshold, it is necessary to adjust the dredging construction time of the target waterway, that is, as the noise range, so as to reduce the impact of noise during the dredging construction process on the environment.

[0091] In another preferred implementation of the present invention, in step S3, the process of determining the standard construction time range specifically includes:

[0092] Draw a straight line passing through the number of people Q' on the y-axis and parallel to the x-axis as a reference line, take the intersection of the reference line and the curve of the number of people changing with time as a reference point, take the curve of the number of people changing with time between two adjacent reference points as a pending curve, and take the curve below the reference line in the pending curve as an adjustment curve;

[0093] Get the time range F corresponding to the kth adjustment curve k =[TSTA k ,TEND k ], TSTA k Indicates the time point when the kth adjustment curve starts, TEND k Indicates the time point at which the kth adjustment curve ends, generating a time range set FJH=(F1,F2,…,F m );

[0094] An initial construction time range SGF is set, and a standard construction time range SGB=SGF∩FJH is determined, and dredging construction is performed on the target waterway within the noise range within the standard construction time range;

[0095] When the initial construction time range SGF does not have an intersection with the time range set FJH, an early warning message is sent to remind the staff.

[0096] It is worth noting that by determining the adjustment curve, dredging construction can be avoided during peak hours, and the standard construction time range is determined to ensure smooth construction while minimizing the negative impact on the surrounding environment; the initial construction time range is the time range within which dredging construction can be carried out within a day, which can be set based on experience and actual construction needs;

[0097] At the same time, in actual situations, there may be a situation where there are always a large number of people in a certain area, resulting in the time range set being empty, and then the standard construction time range cannot be obtained. At this time, the staff should be reminded and take corresponding measures.

[0098] A waterway area dredging construction supervision system, comprising:

[0099] Data collection module: set p collection cycles, where p is a preset number, and obtain the construction degree of the target waterway within the collection cycle, where the construction degree is the length of the target waterway that has completed dredging construction, and the target waterway is the waterway that needs dredging construction;

[0100] Impact area determination module: calculates the mean value D of the construction degree, and sets a number of distance points starting from the starting point of the target waterway with the mean value D of the construction degree as an interval;

[0101] Obtain an electronic map of the preset monitoring area, and establish a coordinate system with the starting point of the target channel in the electronic map as the origin, and obtain the coordinates of the i-th distance point (x i ,y i ) and the next adjacent distance point (x i+1 ,y i+1 );

[0102] Determine the impact range A of dredging construction between the i-th distance point and the next adjacent distance point i+1 i ;

[0103] Construction time determination module: determine the number of people within the impact range, and determine the noise range based on the number of people within the impact range, the noise range is the impact range that needs to adjust the dredging construction time, and determine the standard construction time range, the standard construction time range is the time range for dredging construction on the target waterway within the noise range.

[0104] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A method for supervising dredging construction in a waterway area, characterized in that: The following steps are involved: S1: Set p collection cycles, where p is a preset number, and obtain the construction degree of the target waterway within the collection cycle, where the construction degree is the length of the target waterway that has completed dredging construction, and the target waterway is the waterway that needs dredging construction; S2: Calculate the mean value D of the construction degree, and set a number of distance points starting from the starting point of the target waterway with the mean value D of the construction degree as an interval; Obtain an electronic map of the preset monitoring area, and establish a coordinate system with the starting point of the target channel in the electronic map as the origin, and obtain the coordinates of the i-th distance point (x i ,y i ) and the next adjacent distance point (x i+1 ,y i+1 ); Determine the impact range A of dredging construction between the i-th distance point and the next adjacent distance point i+1 i ; S3: Determine the number of people within the impact range, and determine the noise range according to the number of people within the impact range, the noise range is the impact range that requires adjustment of the dredging construction time, and determine the standard construction time range, the standard construction time range is the time range for dredging construction on the target waterway within the noise range; The impact range A i The following constraints are met: ； in ; ； ； h left (x) satisfies the constraints: ; L left (x) satisfies the constraints: , ∆x=sinθ*R, θ represents the target curve f between the i-th distance point and the next adjacent distance point i+1 i (x) is the angle between the tangent line and the x-axis, R represents the preset influence distance, ∆y=cosθ*R; f u (x) satisfies the constraints: ; f v (x) satisfies the constraints: ; h right (x) satisfies the constraints: ; L right (x) satisfies the constraints: ; Get the target curve f between the i-th distance point and the next adjacent distance point i+1 i The process of (x) specifically includes: The target channel between the i-th distance point and the next adjacent distance point i+1 is used as a point-taking channel, and a number of geographical points are selected at preset distance intervals on the point-taking channel; The geographical points are fitted, and the fitting formula is f(x), the target curve between the i-th distance point and the next adjacent distance point i+1 is f i (x); The process of obtaining the influence distance R specifically includes: The noise S during the dredging construction process is periodically obtained at the preset position, and the variance S of the noise is calculated var ; When the variance of the noise S var ≥S var ', generate the noise set S jh = (S1, S2, …, S n ), S n represents the noise during the dredging construction process obtained for the nth time, S var ' represents the preset variance threshold; Remove the maximum noise S max =max (Sjh) and minimum noise S min (S jh ), and recalculate the variance of the noise S var , until the variance of the noise S var <S var ', and calculate the mean value S of the noise at this time ave ; Calculate the falloff distance , where S bz Indicates the preset noise threshold; The influence distance R is calculated as α*r, where α is a preset attenuation distance correction value and α<1.

2. A method for supervising dredging construction in a waterway area according to claim 1, characterized in that: In the step S1, after the bth distance point is determined, when the distance between the bth distance point and the end point of the target channel is less than the mean value D of the construction degree, the end point of the target channel is taken as the b+1th distance point.

3. A method for supervising dredging construction in a waterway area according to claim 1, characterized in that: Calculate the mean value S of the noise ave In the process, when the difference between a certain noise c and the mean value of the noise is greater than or equal to a preset noise difference threshold, the noise c is removed and the mean value S of the noise is recalculated. ave .

4. A method for supervising dredging construction in a waterway area according to claim 1, characterized in that: In step S3, the process of determining the noise range according to the number of people within the affected range specifically includes: m statistical periods are set, where m is a preset value, and a number of time nodes are set at preset time intervals TJG within the statistical period to count the number of people in the affected area at each time node; Calculate the mean of the number of people at the same time node as the number of people Q at that time node, and draw a curve g(t) showing the change of the number of people over time. When the maximum number of people Qmax=max(g(t))≥Q', take the corresponding impact range as the noise range, and Q' represents the preset number threshold.

5. A method for supervising dredging construction in a waterway area according to claim 4, characterized in that: In step S3, the process of determining the standard construction time range specifically includes: Draw a straight line passing through the number of people Q' on the y-axis and parallel to the x-axis as a reference line, take the intersection of the reference line and the curve of the number of people changing with time as a reference point, take the curve of the number of people changing with time between two adjacent reference points as a pending curve, and take the curve below the reference line in the pending curve as an adjustment curve; Get the time range F corresponding to the kth adjustment curve k =[TSTA k ,TEND k ], TSTA k Indicates the time point when the kth adjustment curve starts, TEND k Indicates the time point at which the kth adjustment curve ends, generating a time range set FJH=(F1,F2,…,F m ); An initial construction time range SGF is set, and a standard construction time range SGB=SGF∩FJH is determined, and dredging construction is performed on the target waterway within the noise range within the standard construction time range.

6. A waterway area dredging construction supervision system, characterized in that: include: Data collection module: set p collection cycles, where p is a preset number, and obtain the construction degree of the target waterway within the collection cycle, where the construction degree is the length of the target waterway that has completed dredging construction, and the target waterway is the waterway that needs dredging construction; Impact area determination module: calculates the mean value D of the construction degree, and sets a number of distance points starting from the starting point of the target waterway with the mean value D of the construction degree as an interval; Obtain an electronic map of the preset monitoring area, and establish a coordinate system with the starting point of the target channel in the electronic map as the origin, and obtain the coordinates of the i-th distance point (x i ,y i ) and the next adjacent distance point (x i+1 ,y i+1 ); Determine the impact range A of dredging construction between the i-th distance point and the next adjacent distance point i+1 i ; Construction time determination module: determine the number of people within the impact range, and determine the noise range according to the number of people within the impact range, the noise range is the impact range that needs to adjust the dredging construction time, and determine the standard construction time range, the standard construction time range is the time range for dredging construction on the target waterway within the noise range; The impact range A i The following constraints are met: ； in ; ； ； h left (x) satisfies the constraints: ; L left (x) satisfies the constraints: , ∆x=sinθ*R, θ represents the target curve f between the i-th distance point and the next adjacent distance point i+1 i (x) is the angle between the tangent line and the x-axis, R represents the preset influence distance, ∆y=cosθ*R; f u (x) satisfies the constraints: ; f v (x) satisfies the constraints: ; h right (x) satisfies the constraints: ; L right (x) satisfies the constraints: ; Get the target curve f between the i-th distance point and the next adjacent distance point i+1 i The process of (x) specifically includes: The target channel between the i-th distance point and the next adjacent distance point i+1 is used as a point-taking channel, and a number of geographical points are selected at preset distance intervals on the point-taking channel; The geographical points are fitted, and the fitting formula is f(x), the target curve between the i-th distance point and the next adjacent distance point i+1 is f i (x); The process of obtaining the influence distance R specifically includes: The noise S during the dredging construction process is periodically obtained at the preset position, and the variance S of the noise is calculated var ; When the variance of the noise S var ≥S var ', generate the noise set S jh = (S1, S2, …, S n ), S n represents the noise during the dredging construction process obtained for the nth time, S var ' represents the preset variance threshold; Remove the maximum noise S max =max (Sjh) and minimum noise S min (S jh ), and recalculate the variance of the noise S var , until the variance of the noise S var <S var ', and calculate the mean value S of the noise at this time ave ; Calculate the falloff distance , where S bz Indicates the preset noise threshold; The influence distance R is calculated as α*r, where α is a preset attenuation distance correction value and α<1.

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