A monitoring and analysis system for the backfill of civil air defense projects

Abstract

The present invention relates to the technical field of monitoring and analysis. The present invention discloses a monitoring and analysis system for the backfill of civil air defense projects; the monitoring and analysis subsystem includes a monitoring module and an analysis and decision-making module, which collect the engineering health data of the civil air defense project at the monitoring and analysis points and determine whether to perform health repair operations. The engineering monitoring subsystem includes a three-dimensional modeling module and a backfill monitoring module, which construct a three-dimensional model of the civil air defense. The tracking monitoring subsystem includes a sampling and analysis module, which generates the backfill grade of the civil air defense project; by collecting three-dimensional modeling data to construct a three-dimensional model of the civil air defense and identifying the settlement and crack areas in the three-dimensional model of the civil air defense, the actual shape and structure of the civil air defense project can be accurately simulated and emulated, and the defect areas of the civil air defense project can be automatically, accurately and quickly identified and calculated in the three-dimensional model of the civil air defense, thereby achieving a high-quality monitoring and analysis effect on the civil air defense project.

Description

Technical Field

[0001] The present invention relates to the technical field of monitoring and analysis, and more specifically, to a monitoring and analysis system for the backfill of civil air defense projects. Background Art

[0002] Civil air defense projects refer to facilities and equipment used to resist air raids, nuclear attacks, and other war disasters. Especially for civil air defense projects built underground, as the construction years increase, the degree of influence by factors such as geological activities, surrounding construction disturbances, and material aging will become more and more serious, resulting in potential safety hazards such as uneven settlement and crack expansion of civil air defense projects. In order to timely and accurately understand the settlement and crack information of civil air defense projects and meet the subsequent material backfill requirements for settlement and cracks, it is necessary to conduct regular monitoring and analysis of civil air defense projects.

[0003] The patent application with the publication number CN115169982A discloses an intelligent monitoring, evaluation, and analysis system for the stability of tunnel surrounding rock in highway engineering, including a surrounding rock moisture monitoring module, a surrounding rock moisture analysis module, a surrounding rock concrete monitoring module, a surrounding rock concrete analysis module, a surrounding rock deformation monitoring module, a surrounding rock deformation analysis module, a surrounding rock comprehensive analysis module, a warning display terminal, and a database; it analyzes four dimensions of the concrete thickness, humidity, number of cracking locations, and the corresponding cracking depth at each cracking location of the tunnel surrounding rock, strengthening the investigation of potential stability hazards of the tunnel surrounding rock, improving the safety of tunnel use, and having a high level of intelligence and automation;

[0004] The existing backfill monitoring and analysis system collects a large amount of multi-dimensional data of civil air defense projects and then manually analyzes and calculates the collected data one by one to identify defects such as settlement and cracks in civil air defense projects. For example, in the above patent application, it analyzes the data in four dimensions to achieve the monitoring and analysis effect of underground structures. Due to the wide range of data dimensions and large quantity involved in the monitoring and analysis of civil air defense projects, the method of manually analyzing and calculating multi-dimensional data one by one will cause the problem of slow monitoring and analysis speed, and at the same time, there is a lack of operation of simulating civil air defense projects, so it is impossible to automatically, accurately, and quickly identify potential settlement and crack defects in civil air defense projects in all aspects, resulting in low accuracy of the monitoring and analysis results of civil air defense projects.

[0005] In view of this, the present invention proposes a monitoring and analysis system for the backfill of civil air defense projects to solve the above problems. Summary of the Invention

[0006] To overcome the above-mentioned defects of the prior art and to achieve the above object, the present invention provides the following technical solution: A monitoring and analysis system for the backfill of civil air defense projects, including a monitoring and analysis subsystem, a project monitoring subsystem, and a tracking monitoring subsystem;

[0007] The monitoring and analysis subsystem includes a monitoring module and an analysis and decision-making module;

[0008] The monitoring module is used to determine the monitoring period of the civil air defense project, take the first moment after the corresponding duration of a monitoring period as the monitoring and analysis point, and collect the project health data of the civil air defense project at the monitoring and analysis point;

[0009] The analysis and decision-making module is used to conduct a health analysis on the project health data, identify the health status of the civil air defense project at the monitoring and analysis point, and determine whether to perform a health repair operation;

[0010] The project monitoring subsystem includes a 3D modeling module and a backfill monitoring module;

[0011] The 3D modeling module is used to mark the modeling acquisition points that are spaced and distributed bidirectionally in the civil air defense project, collect the point cloud data set and image data of the civil air defense project at the modeling acquisition points, and construct a 3D model of the civil air defense;

[0012] The backfill monitoring module is used to identify the backfill area in the 3D model of the civil air defense based on the area recognition criterion, and calculate the effective backfill volume of the backfill area;

[0013] The tracking monitoring subsystem includes a sampling and analysis module;

[0014] The sampling and analysis module is used to formulate the sampling priority of the backfill area, sample and analyze the backfill area according to the sampling priority, and generate the backfill grade of the civil air defense project.

[0015] Further, the method for determining the monitoring period is as follows:

[0016] Query the completion time of the construction of the civil air defense project through the database, record the duration between the completion time of the construction and the current time as the completion duration, and mark within the completion duration equally spaced time points;

[0017] Query the humidity values of all humidity sensors in the civil air defense project at the time points one by one through the database, and record the maximum value of the humidity values as the effective humidity, obtaining effective humidities;

[0018] Add up the effective humidities and take the average to obtain the humidity mean value, and add the humidity mean value, the maximum value of the effective humidity and the minimum value of the effective humidity and then take the average to obtain the soil humidity value;

[0019] Query the seismic resistance grade of the civil air defense project through the construction drawings, assign the seismic resistance grade, the completion duration and the soil humidity value to the corresponding proportionality coefficients and then compare them to calculate the monitoring period.

[0020] Furthermore, the engineering health data includes the settlement concentration rate, the crack morphology value, and the ground waterlogging value;

[0021] The method for collecting the settlement concentration rate is as follows:

[0022] Overlook and photograph the indoor ground of the civil air defense project through the distributed cameras to obtain B ground images, and splice the B ground images in sequence according to the orientation of the indoor ground to form an overlook image;

[0023] Taking the preset segmentation length as the standard, divide the overlook image into C sub-grids with the same area size, and record the corner points of the sub-grids as settlement monitoring points to obtain D settlement monitoring points;

[0024] Measure the real-time settlement values of the D settlement monitoring points at the monitoring and analysis point one by one through vibrating wire settlement gauges, and respectively query the original settlement values of the D settlement monitoring points at the previous monitoring and analysis point;

[0025] After subtracting each of the D real-time settlement values from the corresponding D original settlement values one by one, obtain D settlement differences, and record the settlement monitoring points with settlement differences greater than the calibrated settlement value as target settlement points to obtain target settlement points;

[0026] Measure the distance values between any two target settlement points one by one, and add the maximum value and the minimum value of the distance values and then take the average to obtain the target length;

[0027] Respectively take the target settlement points as the origin, and draw circles with the target length as the radius to obtain settlement circles, and count the number of target settlement points within each of the settlement circles one by one, and compare the number of target settlement points within each of the settlement circles with the total number of target settlement points and then accumulate and take the average to obtain the settlement concentration rate.

[0028] Furthermore, the method for collecting the crack morphology value is as follows:

[0029] Under the monitoring and analysis point, photograph the wall video of the civil air defense project through a camera, identify the crack area in the wall video through computer vision technology, and mark the location of the crack area on the wall of the civil air defense project to obtain F crack positions;

[0030] Outside the F crack positions, measure the length, width, and depth of the F crack areas one by one through the distributed FBG sensors, and compare the length, width, and depth of the F crack areas to obtain F sub-morphology values;

[0031] The calculation formula for the sub-morphology value is:

[0032] ;

[0033] Wherein, is the sub - morphology value of the th crack area, = 1, 2,..., F, is the width of the th crack area, is the length of the th crack area, is the depth of the th crack area;

[0034] Eliminate the sub - morphology values less than the calibrated morphology value, and after accumulating the remaining sub - morphology values and taking the average, the crack morphology value is obtained.

[0035] Furthermore, the health status includes unhealthy, sub - healthy and healthy. The methods for identifying unhealthy, sub - healthy and healthy are as follows:

[0036] When the settlement concentration rate is greater than the settlement safety value, record the settlement concentration rate as pathological data;

[0037] When the crack morphology value is greater than the crack safety value, record the crack morphology value as pathological data;

[0038] When the ground waterlogging value is greater than the waterlogging safety value, record the ground waterlogging value as pathological data;

[0039] Count the number of pathological data in the project health data, and record it as the pathological quantity value;

[0040] When the pathological quantity value is 0, record the health status as healthy;

[0041] When the pathological quantity value is 1, record the health status as sub - healthy;

[0042] When the pathological quantity value is 2 or 3, record the health status as unhealthy.

[0043] Furthermore, the method for determining whether to perform health repair operations is as follows:

[0044] When the health status of the civil air defense project is healthy, it is determined not to perform health repair operations;

[0045] When the health status of the civil air defense project is sub - healthy or unhealthy, it is determined to perform health repair operations.

[0046] Furthermore, the method for marking the modeling acquisition points is as follows:

[0047] A1: Query the top-down construction drawing of the civil air defense project through the database, draw a line along the position of the outer boundary of the civil air defense project, and draw the project boundary line;

[0048] A2: Draw a center line that bisects the project boundary line along the access direction of the civil air defense project, and record the project boundary lines on both sides of the center line as the first boundary and the second boundary respectively;

[0049] A3: Starting from the intersection point of the center line and the project boundary line, mark G sub-collection points and K parent collection points at intervals on the first boundary and the second boundary respectively, and deploy 3D laser scanners with opposite scanning directions at the G sub-collection points and the K parent collection points;

[0050] A4: Collect the scanning image of the 3D laser scanner at the first sub-collection point, adjust the position of the first sub-collection point on the first boundary until the scanning image of the first sub-collection point covers the starting point, and record the adjusted first sub-collection point as the first modeling point;

[0051] A5: Collect the scanning image of the 3D laser scanner at the first parent collection point, adjust the position of the first parent collection point on the second boundary until the overlapping area of the scanning image of the first parent collection point and the scanning image of the first sub-collection point is greater than 35% of the area of the scanning image of the first sub-collection point, and record the adjusted first parent collection point as the second modeling point;

[0052] A6: Remove the first modeling point and the second modeling point respectively, and repeat the steps of A4 - A5 for the remaining sub-collection points and parent collection points until all the project boundary lines are covered by the scanning images, obtaining T first modeling points and W second modeling points;

[0053] A7: After summarizing the T first modeling points and W second modeling points, obtain S modeling points, and mark the S modeling points one by one at the corresponding positions of the civil air defense project to obtain S modeling collection points.

[0054] Further, the method for constructing a 3D model of the civil air defense project is as follows:

[0055] Use the 3D laser scanner to scan the interior of the civil air defense project at the S modeling collection points to obtain S point cloud data sets and S image data;

[0056] Import the S point cloud data sets into the point cloud processing tool for denoising and filtering, and align all the point clouds in the S point cloud data sets to the same coordinate system through the ICP algorithm;

[0057] Convert all the point clouds in the coordinate system into a triangular mesh model, and smooth the triangular mesh model to construct a basic 3D model;

[0058] Query the original three-dimensional coordinates of all point clouds in the basic solid model, mark the image three-dimensional coordinates consistent with the original three-dimensional coordinates in the S image data, and import the image features corresponding to the image three-dimensional coordinates onto the basic solid model to construct a civil air defense solid model.

[0059] Further, the area recognition criterion is: mark the corresponding area where the actual length value of the point-to-point connection line is greater than the calibrated length value as the backfill area;

[0060] The method for calculating the effective backfill volume is:

[0061] Mark all the point clouds in the civil air defense solid model one by one, and connect any two adjacent point clouds in sequence to obtain L point-to-point connection lines;

[0062] Measure the actual length values of the L point-to-point connection lines one by one, mark the point-to-point connection lines with actual length values greater than the calibrated length value as area lines, mark the point clouds at both ends of all area lines as area point clouds, and mark the remaining point clouds as non-area point clouds;

[0063] Delete all non-area point clouds in the civil air defense solid model, and after connecting the area point clouds that are adjacent and on the outer layer in pairs, generate backfill areas;

[0064] Mark one by one the three-dimensional coordinates of all area point clouds in the backfill areas, import the three-dimensional coordinates into the volume calculation tool, calculate the volume of the backfill areas, and record it as the sub-backfill volume;

[0065] Query the loss rate of the backfill material, and after accumulating the sub-backfill volumes one by one and combining them with the loss rate of the backfill material, calculate the effective backfill volume;

[0066] The calculation formula for the effective backfill volume is:

[0067] ;

[0068] In the formula, is the effective backfill volume, is the sub-backfill volume of the th backfill area, is the loss rate of the backfill material.

[0069] Further, the sampling priority is: the larger the priority value of the backfill area, the earlier the sampling order of the backfill area;

[0070] The sampling analysis method for the backfill area is:

[0071] Mark the point cloud of the entrance and exit positions of the civil air defense project in the three-dimensional civil air defense model, and record the point cloud at the middle position as the entrance and exit point cloud, and measure one by one the distances from the backfill areas to the entrance and exit point cloud, and obtain sampling distance values;

[0072] Assign the sampling distance values and the sub-backfill volumes to different proportionality coefficients respectively and then add them up to obtain priority values;

[0073] In the order from largest to smallest of the priority values, sample the backfill areas in sequence to obtain backfill samples;

[0074] The backfill grades include qualified grade and unqualified grade.

[0075] The technical effects and advantages of a monitoring and analysis system for civil air defense project backfill of the present invention:

[0076] By collecting the engineering health data of the civil air defense project at the monitoring and analysis points and evaluating and analyzing the health status of the civil air defense project based on the engineering health data, the present invention can accurately collect multi-dimensional quality data in the civil air defense project, so as to accurately identify and judge defects such as settlement and cracks existing in the civil air defense project according to the actual situation of the civil air defense project. At the same time, by collecting three-dimensional modeling data to construct a three-dimensional civil air defense model and identifying the settlement and crack areas in the three-dimensional civil air defense model, the actual shape and structure of the civil air defense project can be accurately simulated and emulated, that is, it can achieve an automatic, accurate and rapid identification and calculation effect on the defect areas of the civil air defense project in the three-dimensional civil air defense model. It can not only avoid the problems of low efficiency and insufficient accuracy caused by manual calculation of a large amount of complex data one by one, but also provide accurate data support for the subsequent repair operations of the backfill materials in the settlement and crack areas, ensuring that potential settlement and crack defects in the civil air defense project can be comprehensively and accurately identified, and then achieving a high-quality monitoring and analysis effect on the civil air defense project. Description of the Drawings

[0077] Figure 1 is a schematic structural diagram of a monitoring and analysis system for civil air defense project backfill provided by Embodiment 1 of the present invention;

[0078] Figure 2 is a schematic flowchart of a monitoring and analysis method for civil air defense project backfill provided by Embodiment 2 of the present invention. Detailed Embodiments

[0079] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0080] Embodiment 1: Please refer to Figure 1 As shown, the monitoring and analysis system for the backfill of civil air defense projects in this embodiment includes a monitoring and analysis subsystem, an engineering monitoring subsystem, and a tracking monitoring subsystem, and the monitoring and analysis subsystem, the engineering monitoring subsystem, and the tracking monitoring subsystem are communicatively connected by wire or wireless means;

[0081] A civil air defense project refers to facilities and equipment used to resist air raids, nuclear attacks, and other war disasters. In this embodiment, the civil air defense project specifically refers to an air-raid shelter.

[0082] The monitoring and analysis subsystem refers to a subsystem in a civil air defense project that can collect, compare and analyze, and output the status of data that affects the quality and health status of the civil air defense project. It serves as the system precondition for the monitoring and analysis system of the backfill of the civil air defense project and provides a data basis for the subsequent operation of the monitoring and analysis system of the backfill of the civil air defense project.

[0083] The monitoring and analysis subsystem includes a monitoring module and an analysis and decision-making module;

[0084] The monitoring module determines the monitoring period of the civil air defense project, formulates monitoring and analysis points, and collects the engineering health data of the civil air defense project at the monitoring and analysis points. The engineering health data includes the settlement concentration rate, crack morphology value, and ground waterlogging value;

[0085] The monitoring period refers to the time span between two adjacent monitoring and analyses of the civil air defense project, which can provide a time interval standard for each monitoring and analysis of the civil air defense project. When the monitoring period is smaller, it means that the time span between two adjacent monitoring and analyses is smaller, and vice versa. In actual situations, the size of the monitoring period is often affected by multiple factors, such as the construction duration of the civil air defense project, the soil moisture content of the civil air defense project, the seismic resistance level of the civil air defense project, etc.;

[0086] The method for determining the monitoring period is:

[0087] Query the construction end time of the civil air defense project through the database, record the time length between the construction end time and the current time as the built duration, and mark equally spaced time points within the built duration;

[0088] Query all the humidity sensors in the civil air defense project one by one through the database at The humidity values at each time point are obtained, and the maximum humidity value is recorded as the effective humidity, and effective humidities are obtained;

[0089] The effective humidities are accumulated and averaged to obtain the average humidity. Then, the average humidity, the maximum effective humidity, and the minimum effective humidity are added together and averaged to obtain the soil humidity value. By combining the average humidity, the maximum effective humidity, and the minimum effective humidity, it is possible to effectively avoid the interference of overly large or small humidity data on the subsequent calculation of the soil humidity value, thereby improving the calculation accuracy of the soil humidity value;

[0090] The calculation formula for the soil humidity value is:

[0091] ;

[0092] In the formula, is the soil humidity value, is the effective humidity at the th time point, is the maximum value of the effective humidity, is the minimum value of the effective humidity;

[0093] The seismic grade of the civil air defense project is queried through the construction drawings. After assigning the seismic grade, the construction duration, and the soil humidity value to the corresponding proportionality coefficients and comparing them, the monitoring period is calculated;

[0094] The calculation formula for the monitoring period is:

[0095] ;

[0096] In the formula, is the monitoring period, is the seismic grade, is the construction duration, , , are the proportionality coefficients of the seismic grade, the construction duration, and the soil humidity value respectively, and , , are all greater than 0.

[0097] The monitoring and analysis point refers to the time point for collecting specific data and monitoring and analyzing the quality and health status of the civil air defense project, and is used as the calibration time for the operation monitoring and analysis subsystem, the project monitoring subsystem, and the tracking monitoring subsystem, ensuring that the operation monitoring and analysis subsystem, the project monitoring subsystem, and the tracking monitoring subsystem can and can only operate at the time corresponding to the monitoring and analysis point;

[0098] Specifically, the monitoring and analysis point is the first moment after the duration corresponding to a monitoring period.

[0099] Engineering health data refers to the diverse data at the monitoring and analysis points of civil air defense projects that can affect the quality and health status of civil air defense projects, which can serve as the data basis for analyzing and judging whether the health status of civil air defense projects is good or not;

[0100] Engineering health data includes settlement concentration rate, crack form value, and ground waterlogging value;

[0101] The settlement concentration rate refers to the concentration degree of the points where ground settlement occurs in civil air defense projects. When the settlement concentration rate is larger, it indicates that the positions where settlement occurs in civil air defense projects are more concentrated, and the health status of civil air defense projects is worse;

[0102] The method for collecting the settlement concentration rate is as follows:

[0103] Overhead shooting of the indoor ground of civil air defense projects by distributed cameras to obtain B ground images, and splicing the B ground images in sequence according to the orientation of the indoor ground into an overhead image; when splicing the ground images into an overhead image, it is necessary to splice according to the actual direction and position of the indoor ground of the civil air defense project, so as to ensure that all ground images can maintain the effect of orderly splicing and avoid the phenomenon of splicing errors when splicing the overhead image;

[0104] Taking the preset segmentation length as the standard, dividing the overhead image into C sub-grids with the same area size, and recording the corner points of the sub-grids as settlement monitoring points to obtain D settlement monitoring points; the preset segmentation length is a numerical representation of the side length size of the sub-grid, so as to ensure the consistency of the area size of the subsequent sub-grids;

[0105] Measuring the real-time settlement values of D settlement monitoring points at the monitoring and analysis points one by one with vibrating wire settlement gauges, and respectively querying the original settlement values of D settlement monitoring points at the previous monitoring and analysis point;

[0106] After subtracting each of the D real-time settlement values from the corresponding D original settlement values one by one, obtaining D settlement differences, and recording the settlement monitoring points with settlement differences greater than the calibrated settlement value as target settlement points, obtaining target settlement points; the calibrated settlement value refers to the minimum value of the settlement difference when the settlement monitoring point is recorded as the target settlement point, which can provide a numerical basis for the subsequent identification of target settlement points;

[0107] Measuring the distance values between any two target settlement points one by one, and adding the maximum value and the minimum value of the distance values and then taking the average to obtain the target length;

[0108] The calculation formula for the target length is:

[0109] ;

[0110] In the formula, is the target length, is the maximum value of the distance value, is the minimum value of the distance value;

[0111] Respectively, taking target settlement points as the origin, and drawing circles with the target length as the radius to obtain settlement circles, and counting one by one the number of target settlement points within the settlement circles. After comparing the number of target settlement points within the settlement circles with the total number of target settlement points respectively and accumulating and averaging, the settlement concentration rate is obtained; the more the number of target settlement points within the settlement circle, the more the number of points with settlement phenomena within the settlement circle, and the more concentrated the settlement position;

[0112] The calculation formula of the settlement concentration rate is:

[0113] :

[0114] In the formula, is the settlement concentration rate, is the number of target settlement points within the th settlement circle, is the total number of target settlement points.

[0115] The crack morphology value refers to the severity of the wall crack phenomenon in the civil air defense project. The larger the crack morphology value, the more severe the wall crack phenomenon in the civil air defense project, and the worse the health state of the civil air defense project;

[0116] The method for collecting the crack morphology value is:

[0117] Under the monitoring and analysis points, shooting the wall video of the civil air defense project through a camera, identifying the crack area in the wall video through computer vision technology, and marking the location of the crack area on the wall of the civil air defense project to obtain F crack positions;

[0118] Outside the F crack positions, measuring the length, width and depth of the F crack areas one by one through the distributed FBG sensors, and after comparing the length, width and depth of the F crack areas, obtaining F sub-morphology values;

[0119] The calculation formula of the sub-morphology value is:

[0120] ;

[0121] In the formula, is the sub-morphology value of the th crack area, = 1, 2,..., F, is the width of the th crack area, is the th crack area length, is the th crack area depth;

[0122] Eliminate the sub-morphology values smaller than the calibrated morphology value, and average the remaining sub-morphology values after accumulation to obtain the crack morphology value; the calibrated morphology value refers to the minimum value of the sub-morphology values that can participate in the subsequent calculation of the crack morphology value, which can increase the calculation threshold of the subsequent crack morphology value, thereby effectively avoiding the interference brought by the crack area with too small area in the subsequent calculation and reducing the calculation burden;

[0123] The calculation formula for the crack morphology value is:

[0124] ;

[0125] In the formula, is the crack morphology value, is the th sub-morphology value.

[0126] The ground waterlogging value refers to the maximum value of the waterlogging depth when there is water accumulation on the ground in the civil air defense project. The greater the ground waterlogging value, the deeper the waterlogging depth when there is water accumulation on the ground in the civil air defense project, and the worse the health state of the civil air defense project; the ground waterlogging value is obtained by taking the maximum value after the waterlogging values monitored by the waterlogging sensors arranged on the ground of the civil air defense project at the monitoring and analysis points.

[0127] The analysis and decision-making module conducts a health analysis on the project health data, identifies the health state of the civil air defense project at the monitoring and analysis points, and determines whether to perform a health repair operation;

[0128] Health analysis refers to the operation of comparing and identifying the numerical sizes of the project health data collected by the monitoring module at the monitoring and analysis points, that is, analyzing the impact of the size of each specific data in the project health data on the health state of the civil air defense project, and identifying the health state of the civil air defense project at the monitoring and analysis points according to the results of the final health analysis.

[0129] The health state is used to specifically represent the quality and health of the actual building of the civil air defense project as a civil air defense facility, and to provide an analysis result for the actual quality and health degree of the civil air defense project.

[0130] Specifically, the health status includes unhealthy, sub-healthy, and healthy; unhealthy, sub-healthy, and healthy are respectively used to represent the health condition of the actual building quality of the civil air defense project as a civil air defense facility from poor to good, and serve as a reference basis for subsequent judgment on whether it is necessary to repair the civil air defense project.

[0131] The methods for identifying unhealthy, sub-healthy, and healthy are as follows:

[0132] Compare the settlement concentration rate, crack form value, and ground waterlogging value of the civil air defense project with the corresponding safety values respectively.

[0133] When the settlement concentration rate is greater than the settlement safety value, it indicates that the concentration degree of the points with ground settlement phenomenon in the civil air defense project at this time is too high, then record the settlement concentration rate as a pathological data.

[0134] When the crack form value is greater than the crack safety value, it indicates that the severity of the wall crack phenomenon in the civil air defense project at this time is too high, then record the crack form value as a pathological data.

[0135] When the ground waterlogging value is greater than the waterlogging safety value, it indicates that the maximum value of the waterlogging depth when there is waterlogging in the civil air defense project at this time is too large, then record the ground waterlogging value as a pathological data.

[0136] Count the number of pathological data in the project health data, and record it as the pathological quantity value.

[0137] When the pathological quantity value is 0, it indicates that there is no pathological data in the project health data. At this time, the quality of the civil air defense project is relatively high and the health degree is relatively good, then record the health status as healthy.

[0138] When the pathological quantity value is 1, it indicates that there is 1 pathological data in the project health data. At this time, the quality of the civil air defense project is average and the health degree is medium, then record the health status as sub-healthy.

[0139] When the pathological quantity value is 2 or 3, it indicates that there are 2 or 3 pathological data in the project health data. At this time, the quality of the civil air defense project is relatively low and the health degree is relatively poor, then record the health status as unhealthy.

[0140] The health repair operation refers to the specific measures for corresponding repair operations on abnormal pathological phenomena when the quality and health condition of the civil air defense project show abnormal pathological phenomena, and serves as the basis for accurately analyzing the quality and health condition of the civil air defense project and formulating subsequent specific decisions.

[0141] In actual situations, when abnormal pathological phenomena occur in the civil air defense project, it is necessary to promptly discover the abnormal pathological phenomena and accurately formulate corresponding decisions based on the abnormal pathological phenomena, so as to carry out targeted repairs on the abnormal pathological phenomena.

[0142] The method for determining whether to perform health restoration operations is as follows:

[0143] When the health status of the civil air defense project is in a positive health state, there are no abnormal pathological phenomena in the civil air defense project at this time, and no subsequent repair treatment is required, so it is determined not to perform health restoration operations;

[0144] When the health status of the civil air defense project is in a sub - healthy or non - healthy state, abnormal pathological phenomena appear in the civil air defense project at this time, and subsequent repair treatment is required, so it is determined to perform health restoration operations.

[0145] The engineering monitoring subsystem refers to a subsystem that can simulate, analyze, and repair the unhealthy phenomena of settlement and cracks in the civil air defense project. It is placed in the middle of the civil air defense project backfill monitoring and analysis system and plays a connecting role in the operation of the civil air defense project backfill monitoring and analysis system.

[0146] The engineering monitoring subsystem includes a three - dimensional modeling module and a backfill monitoring module;

[0147] The three - dimensional modeling module marks the modeling acquisition points in the civil air defense project, collects the three - dimensional modeling data of the civil air defense project at the modeling acquisition points, and constructs a three - dimensional model of the civil air defense project;

[0148] The modeling acquisition point refers to the acquisition location in the civil air defense project that provides diverse data required for subsequent three - dimensional modeling operations, that is, it can ensure that the three - dimensional modeling data required for subsequent three - dimensional modeling can be collected at the corresponding position of the modeling acquisition point;

[0149] When performing three - dimensional modeling on the civil air defense project, in order to ensure the comprehensiveness and integrity of subsequent three - dimensional modeling data, it is necessary to keep the distance between adjacent modeling acquisition points reasonable, neither too large nor too small, and there needs to be a certain proportion of overlap between the three - dimensional modeling data collected at two adjacent modeling acquisition points, so as to provide reasonable and comprehensive data support for the subsequent summary of all three - dimensional modeling data and the construction of the three - dimensional model;

[0150] The method for marking the modeling acquisition points is as follows:

[0151] A1: Query the top - down construction drawing of the civil air defense project through the database, and draw a line along the position of the outer boundary of the civil air defense project to draw the project boundary line;

[0152] A2: Draw a center line that bisects the project boundary line along the entry and exit direction of the civil air defense project, and record the project boundary lines on both sides of the center line as the first boundary and the second boundary respectively; The center line is used to bisect the project boundary line, so that the first boundary and the second boundary can respectively represent the indoor side walls of the civil air defense project;

[0153] A3: Taking the intersection point of the center line and the engineering boundary line as the starting point, mark G sub-collection points and K mother collection points at intervals on the first boundary and the second boundary respectively, and deploy three-dimensional laser scanners with opposite scanning directions at the G sub-collection points and the K mother collection points;

[0154] A4: Collect the scanning image of the three-dimensional laser scanner at the first sub-collection point, and adjust the position of the first sub-collection point on the first boundary until the scanning image of the first sub-collection point covers the starting point, and record the adjusted first sub-collection point as the first modeling point;

[0155] A5: Collect the scanning image of the three-dimensional laser scanner at the first mother collection point, and adjust the position of the first mother collection point on the second boundary until the overlapping area between the scanning image of the first mother collection point and the scanning image of the first sub-collection point is greater than 35% of the area of the scanning image of the first sub-collection point, and record the adjusted first mother collection point as the second modeling point; When there is an overlapping area, it means that there is an overlapping area between the scanning images of the sub-collection point and the mother collection point, which can ensure that the three-dimensional laser scanners on the first boundary and the second boundary can scan and obtain all the indoor structure data of the civil air defense project, avoiding scanning omissions and thus avoiding scanning blind spots;

[0156] A6: Remove the first modeling point and the second modeling point from the G sub-collection points and the K mother collection points respectively, and repeat the steps of A4 - A5 for the remaining sub-collection points and mother collection points until all the engineering boundary lines are covered by the scanning images, obtaining T first modeling points and W second modeling points;

[0157] A7: After summarizing the T first modeling points and the W second modeling points, obtain S modeling points, and mark the S modeling points one by one at the corresponding positions of the civil air defense project to obtain S modeling collection points.

[0158] It should be noted that the scanning image on the first boundary is oriented towards the position of the second boundary, and the scanning image contains part of the second boundary. Similarly, the scanning image on the second boundary is oriented towards the position of the first boundary, and the scanning image contains part of the first boundary, which can ensure that the three-dimensional laser scanner can capture all the area positions inside the civil air defense project.

[0159] The three-dimensional modeling data refers to the data collected at the modeling collection points for subsequent three-dimensional modeling, and a required three-dimensional model of the civil air defense is constructed, enabling the three-dimensional model of the civil air defense to perform simulation processing on the indoor form structure and expression form of the civil air defense project;

[0160] The 3D modeling data includes a point cloud data set and image data; the point cloud data set is used to represent the 3D coordinate information of all the point cloud positions indoors in the civil air defense project, and the image data is used to represent the color texture information of all the positions indoors in the civil air defense project;

[0161] The method for constructing a 3D civil air defense model is as follows:

[0162] Scan the interior of the civil air defense project at S modeling acquisition points through a 3D laser scanner to obtain S point cloud data sets and S image data;

[0163] Import the S point cloud data sets into a point cloud processing tool for denoising and filtering, and align all the point clouds in the S point cloud data sets to the same coordinate system through the ICP algorithm; denoising and filtering of the point cloud processing tool is a key step in 3D data processing, which can effectively remove the noise and outliers at the end of the point cloud and improve the quality of the point cloud data; denoising and filtering of the point cloud processing tool belongs to the existing technology in this field, and algorithms such as direct filtering, voxel filtering, and statistical filtering can be adopted according to actual needs; the ICP algorithm is used to align two or more point cloud data sets to the same coordinate system and is widely used in fields such as 3D reconstruction, SLAM, and civil air defense project monitoring, which is also the existing technology in this field. The denoising and filtering of the point cloud processing tool and the ICP algorithm are not the innovative points of this embodiment and will not be specifically elaborated here;

[0164] Convert all the point clouds in the coordinate system into a triangular mesh model, and perform smoothing processing on the triangular mesh model to construct a basic 3D model; the triangular mesh model and smoothing processing are also the existing technology in this field and are used to construct a 3D model from point clouds;

[0165] Query the original 3D coordinates of all the point clouds in the basic 3D model, mark the image 3D coordinates consistent with the original 3D coordinates in the S image data, and import the image features corresponding to the image 3D coordinates onto the basic 3D model to construct a civil air defense 3D model. Image features are used to represent the specific information in the image data, and image features include colors, textures, etc., so that the image features can render and color the 3D model.

[0166] It should be noted that the constructed civil air defense 3D model is a simulation model with position information and color texture information, enabling the civil air defense 3D model to fully simulate the actual situation indoors in the civil air defense project to ensure subsequent identification and calculation operations on the cracks and settlement positions in the civil air defense project.

[0167] Backfill monitoring module, based on the area recognition criterion, identify the backfill area in the civil air defense 3D model and calculate the effective backfill volume of the backfill area;

[0168] The backfill area refers to the specific locations in the civil air defense three-dimensional model where settlement and crack phenomena occur, and serves as the basis for subsequent backfill repair in the civil air defense project;

[0169] Due to the complexity and uncertainty of the internal environment of the civil air defense project, there may be more than one area with settlement and crack phenomena in the civil air defense project. Therefore, in order to ensure that all settlement and crack phenomena can be completely backfilled and repaired, it is necessary to accurately identify the locations of each settlement and crack phenomenon. At the same time, the backfill area also needs to be accurately identified and segmented from the non-backfill area to improve the subsequent calculation operation of the backfill area. Therefore, it is necessary to identify the backfill area with the help of the area identification criterion.

[0170] The area identification criterion is: the corresponding area where the actual length value of the point-to-point connection line is greater than the calibrated length value is recorded as the backfill area; this can ensure that all point clouds in the civil air defense three-dimensional model can be effectively and accurately identified, maintaining the accuracy of backfill area identification.

[0171] After identifying the backfill area, it is necessary to identify and calculate the spatial size corresponding to the backfill area and obtain the effective backfill volume, so that the effective backfill volume can be used as the data basis for subsequent backfilling of the settlement and crack phenomena in the civil air defense project;

[0172] The method for calculating the effective backfill volume is as follows:

[0173] Mark all the point clouds in the civil air defense three-dimensional model one by one, and connect any two adjacent point clouds in sequence to obtain L point-to-point connection lines;

[0174] Measure the actual length values of the L point-to-point connection lines one by one. The point-to-point connection lines with actual length values greater than the calibrated length value are recorded as area lines, and the point clouds at both ends of all area lines are recorded as area point clouds, and the remaining point clouds are recorded as non-area point clouds; the calibrated length value refers to the maximum value of the actual length between two adjacent point clouds when there are no settlement and crack phenomena, which can provide an accurate numerical basis for the subsequent identification of area lines;

[0175] Remove all non-area point clouds in the civil air defense three-dimensional model, and connect the area point clouds at the outer layer and adjacent positions in pairs to generate backfill areas;

[0176] Mark one by one the three-dimensional coordinates of all area point clouds in the backfill areas, and import the three-dimensional coordinates into the volume calculation tool to calculate the volume of the backfill area, which is recorded as the sub-backfill volume; the volume calculation tool is used to measure the volume in the three-dimensional space, which belongs to the existing technology in this field and is not the innovation point of this embodiment, so it will not be elaborated in detail here;

[0177] Query the loss rate of the backfill material. After adding up the sub-backfill amounts one by one and combining them with the loss rate of the backfill material, calculate the effective backfill amount;

[0178] The calculation formula for the effective backfill amount is:

[0179] ;

[0180] In the formula, is the effective backfill amount, is the sub-backfill amount of the th backfill area, is the loss rate of the backfill material.

[0181] It should be noted that after calculating the effective backfill amount, this effective backfill amount can be used as the numerical basis for subsequent backfill materials to backfill the backfill areas corresponding to the settlement positions and crack positions in the civil air defense project, and ensure that the backfill areas of the civil air defense project can be accurately and sufficiently backfilled with backfill materials, so as to achieve the backfill repair effect of the civil air defense project.

[0182] The tracking and monitoring subsystem refers to a subsystem that can sample and analyze and output results for the backfill repair in the civil air defense project. It is the system postposition of the civil air defense project backfill monitoring and analysis system and plays a role of summary representation for the operation of the civil air defense project backfill monitoring and analysis system.

[0183] The tracking and monitoring subsystem includes a sampling and analysis module;

[0184] The sampling and analysis module formulates the sampling priority for the backfill area, samples and analyzes the backfill area according to the sampling priority, and generates the backfill grade of the civil air defense project;

[0185] After all the backfill areas are effectively backfilled with backfill materials, the backfill areas will be filled with backfill bodies formed by the solidification of backfill materials at this time. At this time, it is necessary to sample and analyze the backfill bodies in each backfill area, and analyze the actual backfill effect of each backfill area according to the results of the sampling and analysis, so as to accurately monitor the backfill quality of the final civil air defense project.

[0186] When sampling and analyzing the backfill bodies in the backfill area, a certain order needs to be based on, and this order is recorded as the sampling priority. Thus, under the limitation of the sampling priority, the sampling sequence of the backfill bodies in each backfill area is calibrated. The sampling priority is usually affected by the size of the backfill amount in the backfill area and the difficulty of sampling, so that the formulation process of the sampling priority can comprehensively consider various factors;

[0187] Specifically, the sampling priority is as follows: the larger the priority value of the backfill area, the earlier the sampling order of the backfill area; thus, it can ensure that all backfill areas can be sampled in an orderly manner and improve the orderliness and rationality of sampling in the backfill area.

[0188] The sampling and analysis method for the backfill area is as follows:

[0189] Mark the point cloud at the entrance and exit positions of the civil air defense project in the civil air defense three-dimensional model, and record the point cloud at the middle position as the entrance and exit point cloud. Measure one by one the distances from backfill areas to the entrance and exit point cloud to obtain

[0190] the sampling distance values; After assigning different proportionality coefficients to the sampling distance values and

[0191] sub-backfill volumes and adding them together, obtain

[0192] priority values;

[0193] In the formula, is the priority value of the th backfill area, is the sampling distance value of the th backfill area, , are the proportionality coefficients of the sampling distance value and the sub-backfill volume respectively, , are both greater than 0;

[0194] According to the order from large to small of the priority values, sample the backfill areas in turn to obtain backfill body samples.

[0195] After obtaining backfill body samples, at this time, it is necessary to analyze the backfilled state of the backfill areas corresponding to the backfill body samples one by one. When analyzing, it is necessary to detect and analyze the physical parameters such as the hardness and density of the backfill body samples. The detection of physical parameters such as hardness and density can be completed by existing detection instruments. This technology belongs to the existing technology and will not be elaborated in detail here. At the same time, it is also necessary to analyze whether the backfilled backfill area has overcome the problems before backfilling;

[0196] Specifically, it is necessary to The settlement concentration rate, crack morphology value, and ground waterlogging value of each backfill area after backfilling are collected and calculated one by one, and compared with the settlement safety value, crack safety value, and waterlogging safety value. According to whether there are abnormal data after comparison and the number of abnormal data, the backfill grade of the civil air defense project is judged, so that the backfill grade can represent the actual backfill effect of the backfill area of the civil air defense project;

[0197] Specifically, the backfill grades include a qualified grade and an unqualified grade; the qualified grade and the unqualified grade are used to represent the good and bad actual backfill effects of the backfill area of the civil air defense project respectively;

[0198] In the specific steps of generating the qualified grade and the unqualified grade, when there are no abnormal data in the backfill area after backfilling, it indicates that the actual backfill effect of the backfill area of the civil air defense project is good, and the qualified grade is generated. When there are abnormal data in the backfill area after backfilling, it indicates that the actual backfill effect of the backfill area of the civil air defense project is poor, and the unqualified grade is generated.

[0199] Regardless of whether the qualified grade or the unqualified grade is generated, the actual backfill grade needs to be saved and recorded, and the saved and recorded data is communicated forward, so as to achieve the effect of mutual communication and collaborative operation among the monitoring and analysis subsystem, the project monitoring subsystem, and the tracking monitoring subsystem, and finally achieve the intelligent monitoring and analysis effect of the civil air defense project.

[0200] In this embodiment, by collecting the project health data of the civil air defense project at the monitoring and analysis points and evaluating and analyzing the health status of the civil air defense project based on the project health data, the multi-dimensional quality data in the civil air defense project can be accurately collected, so as to accurately identify and judge the existing settlement and crack defects according to the actual situation of the civil air defense project. At the same time, by collecting three-dimensional modeling data to construct a three-dimensional model of the civil air defense project and identifying the settlement and crack areas in the three-dimensional model of the civil air defense project, the actual shape and structure of the civil air defense project can be accurately simulated and emulated, that is, the defect areas of the civil air defense project can be automatically, accurately and quickly identified and calculated in the three-dimensional model of the civil air defense project. It can not only avoid the problems of low efficiency and insufficient accuracy caused by manual calculation of a large amount of complex data one by one, but also provide accurate data support for the subsequent repair operation of the backfill materials in the settlement and crack areas, ensure that the potential settlement and crack defects in the civil air defense project can be comprehensively and accurately identified, and then achieve a high-quality monitoring and analysis effect on the civil air defense project.

[0201] Embodiment 2: Please refer to Figure 2 As shown, the parts not described in detail in this embodiment refer to the description content of Embodiment 1. A method for monitoring and analyzing the backfill of a civil air defense project is provided, which is implemented based on a system for monitoring and analyzing the backfill of a civil air defense project, including:

[0202] S1: Determine the monitoring period of the civil air defense project, take the first moment after the corresponding duration of a monitoring period as the monitoring and analysis point, and collect the project health data of the civil air defense project at the monitoring and analysis point;

[0203] S2: Conduct a health analysis on the project health data, identify the health status of the civil air defense project at the monitoring and analysis point, and determine whether to perform a health repair operation;

[0204] S3: If a health repair operation is to be performed, mark the modeling acquisition points that are spaced and distributed bidirectionally in the civil air defense project, collect the point cloud data set and image data of the civil air defense project at the modeling acquisition points, and construct a three-dimensional model of the civil air defense;

[0205] S4: Based on the regional recognition criterion, identify the backfill area in the three-dimensional model of the civil air defense and calculate the effective backfill volume of the backfill area;

[0206] S5: Develop the sampling priority of the backfill area, sample and analyze the backfill area according to the sampling priority, and generate the backfill grade of the civil air defense project.

[0207] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. A monitoring and analysis system for the backfilling of civil air defense projects, characterized in that It includes a monitoring and analysis subsystem, an engineering monitoring subsystem, and a tracking monitoring subsystem; The monitoring and analysis subsystem includes a monitoring module and an analysis and decision-making module; The monitoring module is used to determine the monitoring period of the civil air defense project, take the first moment after the corresponding duration of a monitoring period as the monitoring and analysis point, and collect the project health data of the civil air defense project at the monitoring and analysis point; The project health data includes the settlement concentration rate, the crack form value, and the ground waterlogging value; The method for collecting the settlement concentration rate is as follows: Overlook and photograph the indoor ground of the civil air defense project through cameras arranged in a distributed manner to obtain B ground images, and splice the B ground images in sequence according to the orientation of the indoor ground to form an overhead image; Taking the preset segmentation length as the standard, divide the overhead image into C sub-grids with the same area size, and record the corner points of the sub-grids as settlement monitoring points to obtain D settlement monitoring points; Measure the real-time settlement values of the D settlement monitoring points at the monitoring and analysis point one by one through vibrating wire settlement gauges, and query the original settlement values of the D settlement monitoring points at the previous monitoring and analysis point respectively; After subtracting each of the D real-time settlement values from the corresponding D original settlement values one by one, D settlement differences are obtained, and the settlement monitoring points with settlement differences greater than the calibrated settlement value are recorded as target settlement points, obtaining target settlement points; Measure the distance values between any two target settlement points one by one, and calculate the average value after adding the maximum value and the minimum value of the distance values to obtain the target length; Taking target settlement points as the origin respectively, draw circles with the target length as the radius to obtain settlement circles, and count one by one the number of target settlement points within each settlement circle. After comparing the number of target settlement points within each settlement circle with the total number of target settlement points respectively and accumulating and averaging them, the settlement concentration rate is obtained; The analysis and decision-making module is used to perform health analysis on the project health data, identify the health status of the civil air defense project at the monitoring and analysis point, and determine whether to perform a health repair operation; The engineering monitoring subsystem includes a 3D modeling module and a backfill monitoring module; The 3D modeling module is used to mark the modeling acquisition points that are spaced and distributed bidirectionally in the civil air defense project, collect the point cloud data set and image data of the civil air defense project at the modeling acquisition points, and construct a 3D solid model of the project; The method for marking the modeling acquisition points is as follows: A1: Query the overhead construction drawing of the civil air defense project through the database, and draw a project boundary line along the position of the outer boundary of the civil air defense project; A2: Draw a center line that bisects the project boundary line along the entry and exit direction of the civil air defense project, and record the project boundary lines on both sides of the center line as the first boundary and the second boundary respectively; A3: Taking the intersection point of the center line and the project boundary line as the starting point, mark G sub-acquisition points and K mother acquisition points at intervals on the first boundary and the second boundary respectively, and arrange 3D laser scanners with opposite scanning directions on the G sub-acquisition points and K mother acquisition points respectively; A4: Collect the scanning image of the 3D laser scanner at the first sub-acquisition point, adjust the position of the first sub-acquisition point on the first boundary until the scanning image of the first sub-acquisition point covers the starting point, and record the adjusted first sub-acquisition point as the first modeling point; A5: Collect the scanning image of the 3D laser scanner at the first mother acquisition point, adjust the position of the first mother acquisition point on the second boundary until the overlapping area of the scanning image of the first mother acquisition point and the scanning image of the first sub-acquisition point is greater than 35% of the area of the scanning image of the first sub-acquisition point, and record the adjusted first mother acquisition point as the second modeling point; A6: Exclude the first modeling points and the second modeling points respectively, and repeat the steps of A4 - A5 for the remaining sub - acquisition points and mother - acquisition points until all the engineering boundary lines are covered by the scanned images, obtaining T first modeling points and W second modeling points; A7: After summarizing the T first modeling points and the W second modeling points, obtain S modeling points, and mark the S modeling points one by one at the corresponding positions of the civil air defense project to obtain S modeling acquisition points; The method for constructing a three - dimensional civil air defense model is as follows: Use a three - dimensional laser scanner to scan the interior of the civil air defense project at the S modeling acquisition points to obtain S point cloud data sets and S image data; Import the S point cloud data sets into a point cloud processing tool for denoising and filtering, and align all the point clouds in the S point cloud data sets to the same coordinate system through the ICP algorithm; Convert all the point clouds in the coordinate system into a triangular mesh model, and perform smoothing processing on the triangular mesh model to construct a basic three - dimensional model; Query the original three - dimensional coordinates of all the point clouds in the basic three - dimensional model, mark the image three - dimensional coordinates consistent with the original three - dimensional coordinates in the S image data, and import the image features corresponding to the image three - dimensional coordinates onto the basic three - dimensional model to construct a civil air defense three - dimensional model; Backfill monitoring module, used to identify the backfill area in the civil air defense three - dimensional model based on the area recognition criterion and calculate the effective backfill volume of the backfill area; The tracking monitoring subsystem includes a sampling and analysis module; The sampling and analysis module is used to formulate the sampling priority of the backfill area, sample and analyze the backfill area according to the sampling priority, and generate the backfill grade of the civil air defense project.

2. The monitoring and analysis system for the backfill of civil air defense works according to claim 1, wherein, The method for determining the monitoring period is as follows: Query the database to obtain the construction end time of the civil air defense project, record the duration between the construction end time and the current time as the built duration, and mark equally spaced time points within the built duration; Query all humidity sensors in the civil air defense project one by one through the database at humidity values at time points, and record the maximum humidity value as the effective humidity to obtain effective humidities; Sum up effective humidity values and then calculate the average to obtain the humidity average value. Then add the humidity average value, the maximum value of the effective humidity, and the minimum value of the effective humidity, and calculate the average again to obtain the soil humidity value;​​ Query the seismic grade of the civil air defense project through the construction drawings, assign corresponding proportional coefficients to the seismic grade, the construction duration, and the soil moisture value respectively and compare them to calculate the monitoring period.

3. The monitoring and analysis system for backfilling of civil air defense projects according to claim 2, wherein, The method for collecting the crack morphology value is as follows: Under the monitoring and analysis points, use a camera to shoot the wall video of the civil air defense project, identify the crack area in the wall video through computer vision technology, and mark the location of the crack area on the wall of the civil air defense project to obtain F crack positions; Outside the F crack positions, use distributed FBG sensors to measure the length, width, and depth of the F crack areas one by one, and after comparing the length, width, and depth of the F crack areas, obtain F sub - morphology values; The calculation formula for the sub - morphology value is: ； In the formula, is the sub-morphology value of the th crack region, = 1, 2,..., F, is the width of the th crack region, is the length of the th crack region, is the depth of the th crack region; Eliminate the sub-morphology values smaller than the calibrated morphology value, and average the sum of the remaining sub-morphology values to obtain the crack morphology value.

4. The a monitoring and analysis system for the backfill of civil air defense projects according to claim 3, characterized in that, The health status includes unhealthy, sub - healthy, and healthy. The methods for identifying unhealthy, sub - healthy, and healthy are as follows: When the settlement concentration rate is greater than the settlement safety value, record the settlement concentration rate as pathological data; When the crack morphology value is greater than the crack safety value, record the crack morphology value as pathological data; When the ground waterlogging value is greater than the waterlogging safety value, record the ground waterlogging value as pathological data; Count the number of pathological data in the project health data, denoted as the pathological quantity value; When the pathological quantity value is 0, record the health status as healthy; When the pathological quantity value is 1, record the health status as sub - healthy; When the pathological quantity value is 2 or 3, record the health status as unhealthy.

5. The a monitoring and analysis system for the backfill of civil air defense projects according to claim 4, characterized in that The method for determining whether to perform a health repair operation is: When the health status of the civil air defense project is positive health, it is determined not to perform the health repair operation; When the health status of the civil air defense project is sub-healthy or unhealthy, it is determined to perform the health repair operation.

6. The monitoring and analysis system for the backfill of civil air defense projects according to claim 5, characterized in that, The area recognition criterion is: the area corresponding to the actual length value of the point-to-point connection line greater than the calibrated length value is recorded as the backfill area; The method for calculating the effective backfill volume is: Mark all the point clouds in the civil air defense three-dimensional model one by one, and connect any two adjacent point clouds in sequence to obtain L point-to-point connection lines; Measure the actual length values of the L point-to-point connection lines one by one, record the point-to-point connection lines with actual length values greater than the calibrated length value as area lines, record the point clouds at both ends of all area lines as area point clouds, and record the remaining point clouds as non-area point clouds; Remove all non-region point clouds from the civil air defense three-dimensional model, and connect the region point clouds that are adjacent to each other on the outer layer in pairs to generate backfill areas; Mark out one by one the three-dimensional coordinates of all the regional point clouds in the backfill area, import the three-dimensional coordinates into the volume calculation tool, calculate the volume of the backfill area, and record it as the sub-backfill volume; Query the loss rate of the backfill material, and accumulate the backfill volumes of each sub-item one by one, and combine with the loss rate of the backfill material to calculate the effective backfill volume; The calculation formula for the effective backfill volume is: ； In the formula, is the effective backfill volume, is the sub-backfill volume of the th backfill area, is the loss rate of the backfill material.

7. The monitoring and analysis system for filling of civil air defense project according to claim 6, characterized in that, The sampling priority is: the larger the priority value of the backfill area, the earlier the sampling order of the backfill area; The sampling analysis method for the backfill area is: Mark the point cloud of the entrance and exit positions of the civil air defense project in the three-dimensional civil air defense model, and record the point cloud in the middle position as the entrance and exit point cloud, and measure one by one the distances from the backfill areas to the entrance and exit point cloud, and obtain sampling distance values; Assign sampling distance values and sub-backfill volumes with different proportionality coefficients respectively, and then add them up to obtain priority values; In the order of decreasing priority value, successively sample backfilling areas to obtain backfill body samples; The backfill grades include qualified grade and unqualified grade.

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