A monitoring method for dynamic compaction construction based on target time series detection

Abstract

The present invention relates to the technical field of construction monitoring, and in particular to a dynamic tamping construction monitoring method based on target time sequence detection, the method comprising the following steps: step 1, tamping point division, establishing a tamping point matrix in a tamping area, with one tamping point between the tamping points of the front and rear tamping, and establishing tamping pit coordinates; step 2, determining the tamping sequence, with the movement of the tamping machine being a retrograde movement path; step 3, calculating the tamping amount of a single tamping point, and recording the position height of each tamping of the tamping hammer through a height meter; in this solution, through video time sequence monitoring, the construction team can record and analyze every link in the tamping process, if there is an anomaly between the third and fourth tamping of the same tamping point, the problem can be determined through video analysis, such as equipment failure or operating error, this monitoring not only improves the safety of construction, but also provides traceability for the construction process, which is convenient for accountability and experience summary when problems occur.

Description

Technical Field

[0001] The invention relates to the technical field of construction monitoring, and in particular to a dynamic compaction construction monitoring method based on target time sequence detection. Background Art

[0002] The strong compaction method (abbreviated as the strong compaction method, also known as the dynamic consolidation method) is to lift a steel or reinforced concrete hammer of 8 to 30 tons to a height of 6 to 30 meters in the air, and let it fall freely to impact the ground. The huge impact energy causes the foundation soil to produce strong vibrations and high stresses, thereby promoting the consolidation and compaction of the foundation soil and improving the bearing capacity of the foundation. The strong compaction method is a basic treatment process for treating weak foundation soil. It was first invented by French engineer Menard in 1969. Since Pan Qianli introduced this new technology in an article in 1979, it has been promoted and used in China. Due to its advantages of simple equipment, wide applicability, rapidity, economy, and good results, the strong compaction method has now been widely used in the foundation reinforcement of large-scale civil engineering projects such as water conservancy and hydropower.

[0003] In the traditional dynamic compaction construction process, the amount of tamping settlement recorded depends on manual measurement. This method is affected by the quality and responsibility of the measurement workers, resulting in discrete measurement accuracy. It is also easily affected by geological conditions such as eccentric hammer and buried hammer, resulting in inaccurate measurement. In addition, accurately measuring the settlement distance of each tamping is a major problem in the industry. The existing manual measurement method has low credibility and cannot effectively monitor the quality of the project.

[0004] To this end, the present invention proposes a dynamic compaction construction monitoring method based on target timing detection. By setting the change range of the total compaction amount of the same compaction pit and the change in the duration of a single compaction when two different compaction points reach the same compaction amount, combined with video monitoring, the problem can be determined. This monitoring not only improves the safety of construction, but also provides traceability for the construction process, which is convenient for accountability and experience summary when problems arise. Summary of the invention

[0005] Technical problem to be solved: Traditional dynamic compaction construction relies too much on manual measurement, but the existing manual measurement method has low credibility and cannot effectively monitor the quality of the project.

[0006] In view of the deficiencies in the prior art, the present invention provides a dynamic compaction construction monitoring method based on target time series detection, thereby solving the technical problems mentioned in the background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A dynamic compaction construction monitoring method based on target time sequence detection, the method comprising the following steps:

[0009] Step 1: ramming point division: establish a ramming point matrix in the ramming area, with one ramming point between the ramming points of the front and rear ramming, and establish the ramming pit coordinates;

[0010] Step 2, determine the tamping sequence, and the movement of the tamping machine is a retrograde movement path;

[0011] Step 3, calculating the tamping amount of a single tamping point, recording the height of each tamping position of the tamping hammer through a height meter, measuring the height between the highest point of the tamping hammer on the ground and the height meter after each tamping hammer is completed through the height meter, and calculating the specific tamping amount through a measurement algorithm;

[0012] Step 4, establish the tamping sequence;

[0013] Step 4.1, single tamping pit timing, each tamping is a time point T, the first tamping is T 1， The nth tamping is T n ;

[0014] Step 4.2, total tamping time sequence, the total tamping time of each tamping pit is recorded as T 夯击点坐标 =T n -T1;

[0015] Step 5: Video timing monitoring: During the dynamic compaction construction process, video dynamic monitoring is performed;

[0016] Step 5.1, using video recognition technology to record the position change of the tamping pit, and the tamping process of one tamping pit is marked with a video segment F, because the tamping construction sequence of an area is constructed according to the tamping sequence in step 2;

[0017] Step 5.2, establish video timing. In a video segment, each tamping is a video time point, and the tamping sound is used to punctuate the video timing.

[0018] Step 6: Dynamic monitoring of the tamping amount, by setting a variation range of the total tamping amount of the same tamping pit, and determining whether the tamping is abnormal based on whether the total tamping amount of the tamping pit is within the variation range of the total tamping amount;

[0019] Step 6.1, the tamping amount interval is set. The tamping amount can be determined by the effective reinforcement depth calculation formula, which is as follows:

[0020] h = α (W / H);

[0021] Where W is the mass of the hammer, H is the drop distance, and α is the correction coefficient for the effective reinforcement depth. α is related to soil quality, moisture content, hammer shape, hammer bottom area, process and design standards. The effective range of h is ±0.5;

[0022] Step 6.2, the tamping amount data recorded by the height meter can be used to calculate the overall settlement of the tamping pit according to the soil quality, weight and height of the construction area, and record it as L. When the measured tamping amount is within the range of L±0.5, the tamping is normal, otherwise it is abnormal;

[0023] Step 7: Dynamic monitoring of tamping timing, by monitoring and analyzing the duration of a single tamping of different tamping pits under the same tamping amount and the total duration of different tamping pits under the same total tamping amount, to detect abnormalities in tamping duration and optimize construction efficiency and rhythm. The dynamic monitoring of tamping timing specifically includes the following sub-steps:

[0024] Step 7.1, abnormal detection of the duration of a single tamping of different tamping pits under the same tamping amount, by recording the time point T of each tamping, the duration of a single tamping of different tamping pits under the condition of reaching the same tamping amount can be analyzed;

[0025] Step 7.2, detecting anomalies in the total duration of different tamping pits under the same total tamping amount, after all tamping is completed, comparing the total duration of different tamping pits under the same total tamping amount;

[0026] Step 8: query the corresponding tamping process video according to the abnormal tamping amount and tamping duration, and analyze the abnormal cause through the video. The analysis of the abnormal cause specifically includes the following sub-steps:

[0027] Step 8.1, for the abnormal tamping amount point monitored, retrieve the tamping process video segment F of the tamping point through the video timing monitoring system, analyze the video content, and check whether there is any operation error, equipment failure or abnormal change of geological conditions during the tamping process;

[0028] Step 8.2: For tamping pits with abnormal tamping duration, retrieve the corresponding video segments through the video timing monitoring system, analyze the videos, and check whether there is any delay in the tamping process, whether the tamping energy is stable, whether the tamping machine moves smoothly, etc.;

[0029] Step 8.3: Based on the video analysis results, diagnose the cause of the abnormal tamping point.

[0030] In a possible implementation, the specific formula of the measurement algorithm is as follows:

[0031] The height of the altimeter is recorded as Z;

[0032] Initially, the height between the highest point of the rammer placed on the ground and the altimeter is Z1. After the first ramming, the height between the highest point of the rammer and the altimeter is Z2. The ramming amount after the first ramming is R1=Z1-Z2.

[0033] Starting from the second tamping, the tamping amount R after the nth tamping n =Z n-Z n+1 , where Z n It represents the height between the highest point of the tamping hammer and the height gauge after the nth tamping, Z n+1 It indicates the height between the highest point of the rammer and the height gauge after the n+1th rammering;

[0034] The total tamping amount of a single tamping pit is R=Z1-Z n+1 .

[0035] Beneficial effects compared with the prior art:

[0036] 1. In this scheme, by accurately measuring the tamping amount after each tamping, there is a significant difference in the tamping amount of two tamping points under the same number of tamping times. The construction team can promptly identify abnormal conditions in the construction process, such as uneven distribution of tamping energy or inconsistent geological reactions. Through this monitoring, it can ensure that each tamping point achieves the expected construction effect, thereby improving the overall construction quality;

[0037] 2. In this scheme, efficiency problems in the construction process can be revealed by monitoring the tamping time. When two different tamping points reach the same tamping amount, the duration of a single tamping is different, which may mean that the construction efficiency of some tamping points is low. Through this monitoring, the construction team can adjust the construction plan, such as improving the operation process or adjusting the tamping energy, to improve construction efficiency and rhythm and reduce unnecessary delays;

[0038] 3. In this solution, through video timing monitoring, the construction team can record and analyze every link in the tamping process. If there is an anomaly between the third and fourth tamping times at the same tamping point, the problem can be determined through video analysis, such as equipment failure or operational error. This monitoring not only improves the safety of construction, but also provides traceability for the construction process, making it easier to hold people accountable and summarize experience when problems arise. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0040] Figure 1 It is a schematic diagram of the tamping point division of a dynamic tamping construction monitoring method based on target time series detection;

[0041] Figure 2 It is a schematic diagram of the machine retreat movement path of a dynamic compaction construction monitoring method based on target time series detection;

[0042] Figure 3 It is a schematic diagram of tamping settlement calculation for a dynamic tamping construction monitoring method based on target time series detection;

[0043] Figure 4 The present invention is a flowchart of the steps of a dynamic compaction construction monitoring method based on target time series detection. DETAILED DESCRIPTION

[0044] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can also be implemented in various forms, so the present invention is not limited to the embodiments described below.

[0045] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0046] Embodiment 1:

[0047] Please refer to Figure 1-4 As shown, this embodiment introduces a dynamic compaction construction monitoring method based on target time series detection, including the following steps:

[0048] Step 1: ramming point division, such as Figure 1 As shown, a matrix of tamping points is established in the tamping area. According to the tamping sequence, there is a tamping point between the tamping points of the front and rear tamping, and then the coordinates of the tamping pit are established;

[0049] like Figure 1 As shown, the coordinates of the points of initial tamping are: (Y7.X1) (Y7.X3) (Y7.X5) (Y7.X7) (Y5.X1) (Y5.X3) (Y5.X5) (Y5.X7) (Y3.X1) (Y3.X3) (Y3.X5) (Y3.X7) (Y1.X1) (Y1.X3) (Y1.X5) (Y1.X7), a total of 16 points;

[0050] The coordinates of the points of secondary tamping are: (Y7.X2) (Y7.X4) (Y7.X6) (Y5.X2) (Y5.X4) (Y5.X6) (Y3.X2) (Y3.X4) (Y3.X6) (Y1.X2) (Y1.X4) (Y1.X6), a total of 12 points;

[0051] The coordinates of the three tamping points are: (Y6.X1) (Y6.X3) (Y6.X5) (Y6.X7) (Y4.X1) (Y4.X3) (Y4.X5) (Y4.X7) (Y2.X1) (Y2.X3) (Y2.X5) (Y2.X7), a total of 12 points;

[0052] The coordinates of the last tamping point are: (Y6.X2) (Y6.X4) (Y6.X6) (Y4.X2) (Y4.X4) (Y4.X6) (Y2.X2) (Y2.X4) (Y2.X6) A total of 9 tamping points with the above coordinates are tamped in sequence;

[0053] Step 2, determine the tamping order, (Y7.X1.001), where Y7 is the Y-axis coordinate, X1 is the X-axis coordinate, and 001 is the tamping order;

[0054] like Figure 2 As shown, the movement of the tamping machine is a regressive movement path from X1 to X7 and from Y7 to Y1, so each tamping pit has a separate tamping sequence, as follows:

[0055] The coordinates and sequence of the points for the initial tamping are: (Y7.X1.001) (Y7.X3.002) (Y7.X5.003) (Y7.X7.004) (Y5.X1.005) (Y5.X3.006) (Y5.X5.007) (Y5.X7.008) (Y3.X1.009) (Y3.X3.010) (Y3.X5.011) (Y3.X7.012) (Y1.X1.013) (Y1.X3.014) (Y1.X5.015) (Y1.X7.016) a total of 16 points;

[0056] The coordinates and sequence of the points of the secondary tamping are: (Y7.X2.017) (Y7.X4.018) (Y7.X6.019) (Y5.X2.020) (Y5.X4.021) (Y5.X6.022) (Y3.X2.023) (Y3.X4.024) (Y3.X6.025) (Y1.X2.026) (Y1.X4.027) (Y1.X6.028);

[0057] The coordinates and order of the three tamping points are: (Y6.X1.029) (Y6.X3.030) (Y6.X5.031) (Y6.X7.032) (Y4.X1.033) (Y4.X3.034) (Y4.X5.035) (Y4.X7.036) (Y2.X1.037) (Y2.X3.038) (Y2.X5.039) (Y2.X7.040);

[0058] The coordinates of the point of the last tamping are: (Y6.X2.041) (Y6.X4.042) (Y6.X6.043) (Y4.X2.044) (Y4.X4.045) (Y4.X6.046) (Y2.X2.047) (Y2.X4.048) (Y2.X6.049);

[0059] Step 3: Calculate the tamping amount of a single tamping point, such as Figure 3As shown, the height of each tamping position of the rammer is recorded by the altimeter, and the height of the altimeter is recorded as Z. The height between the highest point of the rammer initially placed on the ground and the altimeter is measured by the altimeter as Z1. Then the height of the highest point of the rammer initially placed on the ground is Z+Z1. After the first tamping, the height between the highest point of the rammer and the altimeter is measured as Z2. Therefore, the height of the highest point of the rammer after the first tamping is Z-Z2. Therefore, the tamping amount after the first tamping is R1=Z+Z1+(Z-Z2)=Z1+Z2. After the second tamping, the height between the highest point of the rammer and the altimeter is measured as Z3. Therefore, the height of the highest point of the rammer after the second tamping is Z-Z3. Therefore, the tamping amount after the second tamping is R2=Z-Z2-(Z-Z3)=Z3-Z2. Starting from the second tamping, the subsequent tamping amount R n The calculation formula is R n =Z （n+1） -Z n , and then the total tamping amount of a single tamping pit is R=Z1+(Z3-Z2)+(Z4-Z3)+...+(Z n -Z n-1 )=Z n -Z2+Z1;

[0060] Step 4: Establish a tamping time sequence. By recording the time point of each tamping, construct the time sequence of a single tamping pit and the total tamping time sequence of the entire construction area to quantify the duration and interval of the tamping activities to ensure the orderliness and efficiency of the construction process.

[0061] Step 4.1, single tamping pit timing, each tamping is a time point T, the first tamping is T 1， The nth tamping is T n ;

[0062] Step 4.2, total tamping time sequence, the total tamping time of each tamping pit is recorded as T 夯击点坐标 =T n -T1;

[0063] Step 5: Video timing monitoring: During the dynamic compaction construction process, video dynamic monitoring is performed;

[0064] Step 5.1, using video recognition technology to record the position change of the tamping pit, and the tamping process of one tamping pit is marked with a video segment F, because the tamping construction sequence of an area is constructed according to the tamping sequence in step 2;

[0065] Step 5.2, establish video timing. In a video segment, each tamping is a video time point, and the tamping sound is used to punctuate the video timing.

[0066] For example, the video timing points of the third and fourth tamping of the serial number (Y5.X3.006) are F006-3 and F006-4 respectively, and the video content between the two video timing points F006-3 and F006-4 is the video monitoring content of the process from the completion of the third tamping to the completion of the fourth tamping of the tamping pit (Y5.X3.006);

[0067] Step 6: Dynamic monitoring of the tamping amount, by setting a variation range of the total tamping amount of the same tamping pit, when the tamping amount of a certain tamping pit is not within the set range, then determine that the tamping is abnormal;

[0068] Step 6.1, the tamping amount interval is set. The tamping amount can be determined by the effective reinforcement depth calculation formula, which is as follows:

[0069] h = α (W / H);

[0070] Where W is the mass of the hammer (tons), H is the drop distance (meters), and α is the correction coefficient for the effective reinforcement depth. α is related to soil quality, moisture content, hammer shape, hammer bottom area, process and design standards. The effective range of h is ±0.5;

[0071] Step 6.2, the tamping amount data recorded by the height meter can be used to calculate the overall settlement of the tamping pit according to the soil quality, weight and height of the construction area, and record it as L. When the measured tamping amount is within the range of L±0.5, the tamping is normal, otherwise it is abnormal;

[0072] For example, for the ramming pit (Y5.X3.006), according to the soil quality, rammer weight and height of the construction area, the overall settlement of the ramming pit can be calculated as L, and then the ramming settlement measurement of the ramming pit should be within the range of L±0.5;

[0073] Step 7: Dynamic monitoring of tamping timing, by monitoring and analyzing the duration of a single tamping of different tamping pits under the same tamping amount and the total duration of different tamping pits under the same total tamping amount, in order to detect abnormalities in tamping duration and optimize construction efficiency and rhythm;

[0074] Step 7.1, abnormal detection of the duration of a single tamping of different tamping pits under the same tamping amount, by recording the time point T of each tamping, the duration of a single tamping of different tamping pits under the condition of reaching the same tamping amount can be analyzed;

[0075] For example, if the duration of a single tamping at two tamping points (Y5.X3.006) and (Y5.X4.021) is significantly different when reaching the same tamping amount, this may indicate that there is a difference in energy transfer efficiency during the tamping process. Through this monitoring, the tamping rhythm can be optimized and construction efficiency can be improved.

[0076] Step 7.2, detecting anomalies in the total duration of different tamping pits under the same total tamping amount, after all tamping is completed, comparing the total duration of different tamping pits under the same total tamping amount;

[0077] For example, if the total time difference between the two tamping points (Y3.X1.009) and (Y3.X2.023) is large when the total tamping amount is the same, this may mean that there are unnecessary delays or efficiency problems in the construction process of certain tamping pits. Through this monitoring, bottlenecks in the construction process can be identified and the construction process can be further optimized;

[0078] Step 8: query the corresponding tamping process video according to the abnormal tamping amount and tamping duration, and analyze the abnormal cause through the video;

[0079] Step 8.1: For the abnormal tamping amount points monitored, such as the abnormal tamping amount of the tamping point (Y7.X1.001), retrieve the tamping process video segment F of the tamping point through the video timing monitoring system, analyze the video content, and check whether there are any operational errors, equipment failures or abnormal changes in geological conditions during the tamping process;

[0080] Step 8.2: For tamping pits with abnormal tamping duration, such as abnormal single tamping duration at the tamping point (Y5.X3.006), the corresponding video segments F006-3 and F006-4 are retrieved through the video timing monitoring system, and the videos are analyzed to check whether there is any delay in the tamping process, whether the tamping energy is stable, whether the tamping machine moves smoothly, etc.;

[0081] Step 8.3: Combined with the video analysis results, diagnose the cause of abnormal tamping points. If it is found that the abnormality is caused by operating errors or equipment failure, personnel training or equipment maintenance should be carried out in time. If the abnormality is caused by geological conditions, the geological report should be re-evaluated and the construction plan should be adjusted. Through this comprehensive analysis, the construction quality can be improved and the project safety can be ensured.

[0082] Based on the above, it should be noted that:

[0083] 1. Systematic monitoring: This method provides a systematic monitoring solution for dynamic compaction construction. It realizes comprehensive monitoring of the construction process by integrating multiple links such as tamping point division, tamping sequence determination, tamping settlement calculation, tamping timing establishment, video timing monitoring and dynamic monitoring.

[0084] 2. Accuracy: Through the use of height gauges and video monitoring technology, this method can accurately record and analyze the amount and timing of each tamping, providing accurate data support for construction quality control;

[0085] 3. Abnormal detection and analysis: This method emphasizes the detection of abnormalities in tamping amount and tamping duration, and through video analysis technology, deeply explores the causes of abnormalities to provide a basis for construction adjustments.

[0086] 4. Construction optimization: By making timely adjustments to abnormal situations during the construction process, this method helps to optimize the construction plan, improve construction efficiency, reduce costs, and ensure project quality.

[0087] 5. Data accumulation and application: This method accumulates valuable construction data through real-time monitoring and abnormal analysis. These data can provide reference for subsequent construction projects and promote the continuous advancement of construction technology.

[0088] 6. Technology integration: This method integrates modern measurement technology, video monitoring technology and data analysis technology, reflecting the advancement and practicality of construction monitoring technology.

[0089] 7. Operability: The implementation steps of this method are clear, the operability is strong, and it is easy to apply in actual construction, providing clear guidance for construction personnel.

[0090] 8. Effectiveness: This method can effectively improve construction quality and reduce construction risks, which is of great significance for ensuring project safety and improving construction efficiency.

[0091] 9. Scalability: The monitoring technology and analysis methods of this method are scalable and can be adjusted and optimized according to the specific needs of different construction projects.

[0092] 10. Environmental adaptability: This method takes into account the impact of different geological conditions on construction. Through monitoring and analysis, it can adapt to different construction environments and ensure the adaptability and flexibility of construction.

[0093] Therefore, as an implementable method, the specific implementation steps of the above-mentioned dynamic compaction construction monitoring method based on target time series detection are as follows:

[0094] 1. Division of tamping points and determination of tamping sequence: First, establish a tamping point matrix in the tamping area, such as Figure 1 As shown, the tamping sequence is determined according to certain rules. For example, the coordinates of the points for the initial tamping are in the order of (Y7.X1), (Y7.X3), etc., to ensure that there is a tamping point between the front and rear tamping points to avoid mutual influence during the construction process.

[0095] 2. Time series record of tamping process: Dynamic monitoring of tamping amount. By setting the variation range of the total tamping amount of the same tamping pit, when the tamping amount of a certain tamping pit is not within the set range, it is judged that the tamping is abnormal. For example, for tamping pit (Y5.X3.006), according to the soil quality, tamping hammer weight and height of the construction area, the overall settlement amount of the tamping pit can be calculated as L, and then the tamping amount of the tamping pit should be within the range of L±0.5;

[0096] 3. Video timing monitoring: During the construction process, the position changes of the tamping pits are recorded through the video monitoring system. The tamping process of each tamping pit is marked as a video segment, and the video timing is punctuated by the tamping sound. For example, the video timing point numbers of the third and fourth tamping in (Y5.X3.006) are F006-3 and F006-4 respectively;

[0097] 4. Dynamic monitoring of tamping amount and tamping sequence: By comparing the tamping amount of different tamping pits with the same number of tamping times and the total tamping amount with the same total tamping sequence, the abnormal changes in tamping amount are monitored. At the same time, the duration of a single tamping of different tamping pits with the same tamping amount and the total duration of different tamping pits with the same total tamping amount are monitored to detect abnormal tamping duration;

[0098] 5. Abnormal analysis and adjustment: When abnormal tamping amount or tamping duration is detected, query the corresponding tamping process video and analyze the abnormal cause. For example, if the tamping amount of the tamping point (Y7.X1.001) is abnormal, video analysis may reveal that it is caused by operational errors or changes in geological conditions. According to the analysis results, timely adjust the construction plan, such as improving the operating process, adjusting the tamping energy or replacing the construction equipment;

[0099] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A dynamic compaction construction monitoring method based on target time series detection, characterized in that: The method comprises the following steps: Step 1: ramming point division: establish a ramming point matrix in the ramming area, with one ramming point between the ramming points of the front and rear ramming, and establish the ramming pit coordinates; Step 2, determine the tamping sequence, and the movement of the tamping machine is a retrograde movement path; Step 3, calculating the tamping amount of a single tamping point, recording the height of each tamping position of the tamping hammer through a height meter, measuring the height between the highest point of the tamping hammer on the ground and the height meter after each tamping hammer is completed through the height meter, and calculating the specific tamping amount through a measurement algorithm; Step 4, establish the tamping sequence; Step 4.1, single tamping pit timing, each tamping is a time point T, the first tamping is T 1， The nth tamping is T n ; Step 4.2: Total tamping time sequence. The total tamping time of each tamping pit is recorded as T 夯击点坐标 =T n -T1; Step 5: Video timing monitoring: During the dynamic compaction construction process, video dynamic monitoring is performed; Step 5.1, using video recognition technology to record the position change of the tamping pit, and the tamping process of one tamping pit is marked with a video segment F, because the tamping construction sequence of an area is constructed according to the tamping sequence in step 2; Step 5.2, establish video timing. In a video segment, each tamping is a video time point, and the tamping sound is used to punctuate the video timing. Step 6: Dynamic monitoring of the tamping amount, by setting a variation range of the total tamping amount of the same tamping pit, and determining whether the tamping is abnormal based on whether the total tamping amount of the tamping pit is within the variation range of the total tamping amount; Step 6.1, the tamping amount interval is set. The tamping amount can be determined by the effective reinforcement depth calculation formula, which is as follows: h = α (W / H); Where W is the mass of the hammer, H is the drop distance, and α is the correction coefficient for the effective reinforcement depth. α is related to soil quality, moisture content, hammer shape, hammer bottom area, process and design standards. The effective range of h is ±0.5; Step 6.2, the tamping amount data recorded by the height meter can be used to calculate the overall settlement amount of the tamping pit according to the soil quality, tamping hammer weight and height of the construction area, and record it as L. When the measured tamping amount is within the range of L±0.5, the tamping is normal, otherwise it is abnormal; Step 7: Dynamic monitoring of tamping timing, by monitoring and analyzing the duration of a single tamping of different tamping pits under the same tamping amount and the total duration of different tamping pits under the same total tamping amount, to detect abnormalities in tamping duration and optimize construction efficiency and rhythm. The dynamic monitoring of tamping timing specifically includes the following sub-steps: Step 7.1, abnormal detection of the duration of a single tamping of different tamping pits under the same tamping amount, by recording the time point T of each tamping, the duration of a single tamping of different tamping pits under the condition of reaching the same tamping amount can be analyzed; Step 7.2, detecting the abnormality of the total duration of different tamping pits under the same total tamping amount, after all tamping is completed, comparing the total duration of different tamping pits under the same total tamping amount; Step 8: query the corresponding tamping process video according to the abnormal tamping amount and tamping duration, and analyze the abnormal cause through the video. The analysis of the abnormal cause specifically includes the following sub-steps: Step 8.1, for the abnormal point of total tamping amount monitored, issue an abnormal alarm in time, suspend construction in time, retrieve the tamping process video segment F of the tamping point, analyze the video content, and check whether there is any operation error, equipment failure or abnormal change of geological conditions during the tamping process; Step 8.2: For tamping pits with abnormal tamping duration, retrieve the corresponding video segments through the video timing monitoring system, analyze the videos, and check whether there is any delay in the tamping process, whether the tamping energy is stable, whether the tamping machine moves smoothly, etc.; Step 8.3: Based on the video analysis results, diagnose the cause of the abnormal tamping point.

2. A dynamic compaction construction monitoring method based on target time series detection as claimed in claim 1, characterized in that: The specific formula of the measurement algorithm is as follows: The height of the altimeter is recorded as Z; The height between the highest point of the rammer and the altimeter when the rammer is initially placed on the ground is Z1. The height between the highest point of the rammer and the altimeter measured after the first rammering is Z2. The ramming amount after the first rammering is R1=Z1-Z2. Starting from the second tamping, the tamping amount R after the nth tamping n =Z n -Z n+1 , where Z n It represents the height between the highest point of the tamping hammer and the height gauge after the nth tamping, Z n+1 It indicates the height between the highest point of the rammer and the height gauge after the n+1th rammering; The total tamping amount of a single tamping pit is R=Z1-Z n+1 .

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