Intelligent evaluation method and system for environmental impact assessment of construction project based on multi-source data fusion

Abstract

The present application proposes a construction project environmental impact assessment intelligent evaluation method and system based on multi-source data fusion, the method comprising: obtaining the construction task and the equipment operation state to confirm the current construction activity and the candidate environmental evidence; determining the evaluation section, the actual observation position and the background reference range to generate the evaluation constraint according to the propagation condition; forming the actual environmental state representative value according to the monitoring record of the actual observation position; extracting the non-activity state from the historical non-activity section and combining the background reference position change to correct, forming the dynamic background state representative value; determining the adverse environmental impact increment according to the actual environmental state representative value and the dynamic background state representative value and generating the evaluation record. The present application effectively excludes the interference of other activities and regional environmental changes by dynamically determining the purpose of the monitoring point and constructing the dynamic background state, accurately separates the new influence of the current construction activity from the monitoring total amount, and improves the accuracy of the environmental evaluation.

Description

Technical Field

[0001] This invention belongs to the field of environmental protection and data processing technology, and in particular relates to an intelligent assessment method and system for environmental impact assessment of construction projects based on multi-source data fusion. Background Technology

[0002] Environmental impact assessments during the construction phase of a project typically rely on construction task records, equipment operation records, engineering quantity records, on-site environmental monitoring records, and meteorological, hydrological, or sound propagation conditions related to pollution spread to determine the impact of specific construction activities on the surrounding environment. A relatively close approach in existing technologies involves first aligning, spatially correlating, and standardizing the format of multi-source data from the construction management system, equipment management system, and environmental monitoring system. Then, the monitoring results during construction are compared with environmental control standards, pre-construction monitoring values, historical averages, or contemporaneous data from fixed background monitoring points to form an environmental quality assessment, pollution risk level, or construction phase environmental assessment conclusion. While this method can reflect changes in the surrounding environment, its assessment basis is usually still the total environmental data obtained at the monitoring location within a certain period, making it difficult to directly determine the additional portion actually generated by the current construction activities.

[0003] In actual engineering projects, the planned construction time may differ from the actual equipment operating time. Within the same work area, there may be intermittent equipment start-ups and shutdowns, changes in work intensity, and multiple construction tasks carried out alternately. Furthermore, the propagation paths of particulate matter, water quality, and noise are influenced by wind direction and speed, water flow direction and flow rate, as well as the location of the sound source and its relationship to fixed barriers. This means that the same fixed monitoring point may serve as an affected monitoring location or a background reference location at different evaluation periods. For example, an increase in the monitoring result of a particulate matter monitoring point during earthwork excavation may be related to the actual operation of excavation equipment and transport vehicles, or it may be related to a synchronous increase in the regional background particulate matter, ongoing earthwork activities in other work areas, or changes in the propagation direction. Changes in downstream water quality indicators during temporary drainage also require assessment in conjunction with the operating status of drainage equipment, water flow direction, flow rate, and other drainage activities. If the evaluation time is directly determined by the construction plan, it is easy to include periods when no actual work was carried out in the evaluation. If the affected role and background role of a certain monitoring point are fixed for a long time, it is easy to form incorrect data correspondences after the direction of propagation changes. If the pre-construction average or fixed historical average is used as the background, it is difficult to reflect the regional environmental changes during the current evaluation period. If data from different construction activities and different environmental media are uniformly summarized, it may also result in a lack of clear connection between specific construction tasks, actual monitoring responses and evaluation results. In addition, there are often differences in regional background conditions between the current evaluation period and historical background periods. Simply selecting a period without construction in the historical records and directly using it as the current background may still misinterpret differences caused by seasonal changes, regional pollution changes or hydrological changes as project impacts.

[0004] Therefore, the key issues that existing technologies need to further address are: how to determine the actual construction activities based on the construction tasks and the actual operating status of the equipment; how to determine the evaluation section and the purpose of the monitoring points based on the corresponding environmental medium and real-time propagation conditions; how to construct an inactive environmental state that is compatible with the current regional background after excluding the influence of other similar construction activities; and how to ensure that the actual environmental state and the dynamic background state correspond in terms of target environmental indicators, monitoring locations, evaluation sections, and effective recording range, so as to separate the incremental environmental impact caused by the current construction activities from the total environmental monitoring data, and accurately associate the newly added impact increment, the valid status of evidence, and the disposal trigger records output by the system with specific construction tasks, work areas, occurrence times, and on-site management measures. Summary of the Invention

[0005] This invention discloses an intelligent assessment method and system for environmental impact assessment of construction projects based on multi-source data fusion, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the first aspect of the present invention provides an intelligent assessment method for environmental impact assessment of construction projects based on multi-source data fusion, the method comprising: Obtain the current construction task status and equipment operation status of the construction project, confirm the current construction activities, and obtain candidate environmental evidence records; Based on the current construction activities and propagation conditions, the evaluation section, actual observation location, and background reference range are determined, and evaluation constraints are generated. Acquire monitoring records of the actual observation location within the evaluation section, and form a representative value of the actual environmental state based on the monitoring records; Based on the background reference range and background matching conditions, inactive states are extracted from historical inactive segments and corrected by combining changes in the background reference position to form dynamic background state representative values. Based on the representative values ​​of the actual environmental state and the representative values ​​of the dynamic background state, the increment of adverse environmental impact is determined, and an evaluation record is generated.

[0007] Furthermore, obtaining the current construction task status and equipment operation status of the construction project, and confirming the current construction activities, includes: Read the construction task records that are in execution and the equipment operation records of associated equipment; When the construction task record is in execution state and the associated equipment generates the equipment operation record, or when the on-site measurement record corresponding to the construction task record changes continuously, the corresponding construction task is determined as the current construction activity. The actual start time is determined based on the time when the first associated device starts operating after the current construction activity enters the execution state. The actual end time is determined based on the later occurrence of the end time record of the current construction activity and the stop-operation record of all associated equipment.

[0008] Furthermore, the step of determining the evaluation section, actual observation location, and background reference range based on the current construction activities and propagation conditions, and generating evaluation constraints, includes: The evaluation sections are divided according to the continuous change in the direction of propagation; For air and water environments, the role consistency value is calculated based on the total number of valid records, the number of equipment operation status records, the number of propagation direction pointing records, and the number of direction switching times. When the role consistency value reaches the adoption threshold, the corresponding candidate monitoring point is determined as the actual observation location; For the acoustic environment, the actual observation position is determined based on the spatial relationship between the location of the sound source equipment, the actual observation position, and the fixed sound barrier; The background reference range is formed based on the spatial relationship between the work area, the direction of propagation, and other fixed monitoring points.

[0009] Furthermore, the method also includes: Background matching conditions are formed based on the target environmental indicators, the evaluation section, the actual observation location, and the background reference range; For air quality, the following criteria are used for screening: consistent target environmental indicators, cessation of current activities, cessation of similar impacting activities, consistency of monitoring location and role, consistency of wind direction and category, and similar wind speed status. For the water environment, the selection is carried out in the following order: consistent target water quality indicators, cessation of current drainage activities, cessation of similar drainage activities, consistency of upstream and downstream roles, consistency of flow direction, and similar flow status. For the acoustic environment, the selection criteria are as follows: consistent target noise index, current sound source equipment stopped, similar sound sources stopped, consistent day and night time, consistent status of fixed sound barriers, and consistent monitoring position and role.

[0010] Further, the step of acquiring monitoring records of the actual observation location within the evaluation section, and forming a representative value of the actual environmental state based on the monitoring records, includes: Based on the operating status of the associated equipment, the effective status of the actual observation location, and the range of operational intensity, the monitoring records are divided into continuous recording segments; The effective coverage length is determined based on the overlap between the representative range of each monitoring record and the evaluation section, equipment operation range, effective monitoring point range, and operation level range. Based on the monitoring results of each monitoring record within the continuous recording segment and the effective coverage length, the representative value of the actual environmental state is calculated.

[0011] Further, the step of extracting inactive states from historical inactive segments based on the background reference range and background matching conditions, and correcting them by incorporating changes in the background reference position to form a dynamic background state representative value, includes: Filter historical inactive segments according to the background matching criteria; Extract the first historical data, the second historical data, and the third historical data. The first historical data is the representative value of the target environmental index of the actual observation location within the historical inactive section. The second historical data is the representative value of the target environmental index of the background reference location within the current evaluation section. The third historical data is the representative value of the target environmental index of the background reference location within the historical inactive section. For each historical inactive segment, the first historical data is added to the difference between the second historical data and the third historical data to obtain the current inactive state estimate. The median value of the current inactive state estimate is taken as the representative value of the dynamic background state.

[0012] Further, determining the increment of adverse environmental impact based on the representative value of the actual environmental state and the representative value of the dynamic background state includes: For the target environmental index expressed by linear numerical values, the representative value of the actual environmental state is subtracted from the representative value of the dynamic background state, and the increment of the adverse environmental impact is determined based on the adverse direction coefficient. For the noise index, the representative value of the actual environmental state and the representative value of the dynamic background state are converted into linear sound energy respectively. The linear sound energy corresponding to the dynamic background is subtracted from the linear sound energy corresponding to the actual state, and the remaining sound energy is converted into the contribution equivalent result as the increment of the adverse environmental impact. For indicators with upper and lower control boundaries, the incremental adverse environmental impact is determined based on the remaining allowable reduction or overshoot amount of the actual environmental state relative to the dynamic background state when it approaches or exceeds the boundary.

[0013] Furthermore, after generating the evaluation record, the method further includes: The incremental adverse environmental impact is compared with the pre-set concern and disposal conditions; When the aforementioned disposal conditions are met, the pre-established correspondence between construction activities and environmental management measures is queried based on the construction task, construction procedure, evaluation medium, and target environmental indicators. Invoke the environmental management measures that meet the triggering conditions and are listed first in the sequence, and push them to the on-site person in charge or send them to the corresponding environmental protection facilities; Reacquire the construction task status, equipment status, target environmental monitoring data, and propagation condition data after the treatment, and re-execute the steps from acquiring the current construction task status of the project to generating the evaluation record to generate the retest results; If the retest result still meets the disposal conditions, the environmental management measures that meet the applicable conditions and are scheduled later in the preset call order shall be executed.

[0014] Furthermore, the process of obtaining the current construction task status and equipment operation status of the construction project, confirming the current construction activity, and obtaining candidate environmental evidence records includes: Based on the actual start and end times of the current construction activities, time-correlate the equipment operation records, engineering quantity records, environmental monitoring records, and propagation condition records; Spatial association is performed based on the pre-registered work area number and monitoring point number, and monitoring records related to the current work area are included in the candidate range; When the time difference between the device acquisition time and the project server time exceeds the preset allowable range, it is marked as a time anomaly; When the monitoring device is in a faulty, calibration, or communication abnormal state, it is marked as a device abnormality. Only records with valid time status, equipment status, and key fields are retained to form the current construction activity record set and the candidate environment evidence record set.

[0015] In a second aspect, the present invention provides an intelligent assessment system for environmental impact assessment of construction projects based on multi-source data fusion, the system comprising: The data acquisition module is used to acquire the construction task status and equipment operation status of the current construction project, confirm the current construction activities, and acquire candidate environmental evidence records; The constraint generation module is used to determine the evaluation section, actual observation location, and background reference range based on the current construction activities and propagation conditions, and generate evaluation constraints. The actual state calculation module is used to obtain the monitoring records of the actual observation location within the evaluation section, and to form a representative value of the actual environmental state based on the monitoring records. The dynamic background construction module is used to extract inactive states from historical inactive segments based on the background reference range and background matching conditions, and to make corrections based on changes in the background reference position to form a dynamic background state representative value. The evaluation completion module is used to determine the increment of adverse environmental impact based on the representative value of the actual environmental state and the representative value of the dynamic background state, and to generate an evaluation record.

[0016] The beneficial effects of this invention are as follows: It confirms actual construction activities by tracking construction tasks and the actual operating status of equipment, ensuring a precise correspondence between the evaluation object and actual on-site operations, and avoiding the inclusion of periods without actual operation in the evaluation. It dynamically determines the actual observation and background reference uses of monitoring points based on real-time propagation conditions, solving the problem of data mismatch caused by changes in propagation direction at fixed monitoring points. By extracting data from historically inactive areas and correcting it based on changes in the current background reference position, a dynamic background state is constructed, effectively eliminating interference from other similar construction activities and natural changes in the regional environment. This allows for the accurate separation of the incremental impact caused by current construction activities from the total environmental monitoring data. Finally, it ensures that the evaluation results clearly correspond to specific construction activities and their actual environmental responses, providing direct evidence for the precise triggering and effectiveness confirmation of environmental management measures, thus improving the accuracy of environmental assessments. Attached Figure Description

[0017] The present invention will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0018] Figure 1 This is a flowchart of the intelligent assessment method for environmental impact assessment of construction projects based on multi-source data fusion, as described in this invention.

[0019] Figure 2 This is a framework diagram of the intelligent assessment system for environmental impact assessment of construction projects based on multi-source data fusion, as described in this invention. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In one embodiment of this disclosure, an intelligent assessment method for environmental impact assessment of construction projects based on multi-source data fusion is provided. Figure 1 A flowchart of an intelligent assessment method for environmental impact assessment of construction projects based on multi-source data fusion, according to an embodiment of this disclosure, is shown. Figure 1 As shown, the method includes the following steps: Step 101: Obtain the current construction task status and equipment operation status of the current construction project, confirm the current construction activities, and obtain candidate environmental evidence records.

[0022] Specifically, before the project's environmental impact assessment system is put into operation, a correspondence between construction activities and environmental data is pre-established based on the project's environmental impact assessment documents, construction organization plan, and on-site environmental management plan. This correspondence records the environmental media that may be affected by various construction activities, the target environmental indicators that need to be called, and conditional data directly related to pollution propagation. Earthwork excavation, earthwork loading and unloading, and on-site transportation correspond to particulate matter monitoring data, wind direction data, and wind speed data; piling, crushing, and high-noise equipment operations correspond to noise monitoring data, monitoring periods, and the status of fixed sound barriers; temporary drainage and foundation pit dewatering correspond to target water quality monitoring data, flow direction data, and flow status. The correspondence is entered into the environmental impact assessment system by project management personnel based on the approved project documents and is consistent with the construction procedure codes in the construction management system. The environmental impact assessment system reads the construction task records in the execution state through the data interface of the construction management system. The construction task records include the construction task number, construction procedure, work area number, task status, planned execution period, and associated equipment number; and reads the equipment operation records through the construction machinery controller, equipment management platform, or on-site IoT gateway. The equipment operation records include the equipment number, equipment type, start status, stop status, status occurrence time, and associated construction task number. For devices capable of outputting control status, the operation record generated by the device controller is read directly; for devices connected through an external acquisition terminal, the power supply status, ignition status, or working mechanism action status is read, and the time of status change is used as the recording time of the device's operating status.

[0023] The environmental assessment system uses the construction task status, associated equipment operating status, and on-site measurement records to confirm the current construction activity. When a construction task is in execution mode and at least one associated device generates an operating record, or when the on-site measurement record corresponding to the task shows continuous changes, the construction task is identified as the current construction activity. When a construction task is in execution mode but no equipment operating records or measurement changes have yet been generated, the task is recorded as a task awaiting confirmation. When equipment is already running but the equipment record lacks a construction task number, it is associated with other construction tasks in execution mode within the same area based on the equipment's pre-registered work area, equipment purpose, and affiliated construction team, forming a unique correspondence before being written into the current construction activity record. The actual start time of the current construction activity is the time when the first associated device starts operating after the construction task enters execution mode. When the construction activity has ended, the actual end time is the later of the construction task end record and the total number of associated equipment stoppage records. When the construction activity is still ongoing, the latest time covered by the construction activity record, target environmental monitoring record, and propagation condition record before the current assessment time is used as the temporary assessment endpoint, which is updated to the actual end time after the construction task ends and the associated equipment stops. For example, if the construction management system records that the earthwork excavation task of the foundation pit on the east side has entered the execution state, and two excavating machines subsequently upload their operation records, and the vehicle counting terminal at the entrance and exit simultaneously generates earthwork transportation records, then the time when the first excavating machine starts operating is determined as the actual start time of the earthwork excavation activity. During real-time evaluation, the latest time when construction records, particulate matter records, and wind direction and speed records have all been completely obtained is used as the temporary evaluation endpoint. If one excavating machine is still operating after the construction task registration is completed, then the time when that machine stops is determined as the actual end time. The actual operational level of earthwork activities is characterized by the number of transportation trips, weighbridge records, or cumulative equipment operation records. The actual operational level of drainage activities is characterized by the operating status of drainage pumps and changes in pipeline flow. The actual operational level of piling activities is characterized by the operating period and continuous operation status of the piling equipment.

[0024] Based on the confirmed construction procedures, the environmental assessment system queries the correspondence between construction activities and environmental data to determine the target environmental monitoring data and propagation condition data required for this assessment. Target environmental monitoring data is collected by fixed monitoring equipment already installed and numbered at the project site. Each record includes the monitoring point number, target environmental indicator, collection time, monitoring results, equipment operating status, and data source. Air environment data is collected by fixed particulate matter monitoring equipment, while wind direction and speed are collected by on-site meteorological monitoring equipment. Acoustic environment data is collected by fixed noise monitoring equipment, with the monitoring period determined based on the data collection time; the status of fixed sound barriers is retrieved from the project site layout information. Water environment data is collected by online water quality monitoring equipment located at drainage outlets, upstream, or downstream; flow direction and flow rate are provided by hydrological monitoring equipment or drainage pipeline collection equipment. When the same construction activity involves two types of environmental media, candidate environmental evidence records are created separately for each environmental media. For example, when earthwork loading and unloading simultaneously involve particulate matter and noise, separate particulate matter monitoring records and their wind direction and speed records, as well as noise monitoring records and their monitoring periods and fixed sound barrier status records, are generated to ensure that each type of environmental data retains its independent technical meaning and subsequent use.

[0025] The project server provides a unified time reference to the construction management system, equipment management platform, environmental monitoring equipment, and propagation condition acquisition equipment. Each data record simultaneously stores the equipment acquisition time and the system reception time. The environmental assessment system correlates equipment operation records, engineering quantity records, environmental monitoring records, and propagation condition records according to the actual start and end times of the current construction activity, and retains continuous records of the same monitoring point before, during, and after the activity, as well as within historical valid time periods. Spatial correlation is completed based on the work area number and monitoring point number registered during the project deployment phase. The location relationship between each work area and surrounding fixed monitoring points is pre-recorded in the overall construction layout. The environmental assessment system uses this information to include monitoring records related to the current work area in the candidate scope. For example, when multiple fixed particulate matter monitoring points are set up around the eastern foundation pit, the concurrent particulate matter records of each monitoring point, along with the corresponding wind direction and speed records, are correlated with the work activities in the eastern foundation pit, allowing for subsequent determination of affected monitoring locations and background reference locations based on the actual propagation direction. When the deviation between the device's data acquisition time and the project server's time exceeds the project's preset allowable range, the record is marked as a time anomaly. This preset allowable range is determined by the project server's time synchronization strategy, the monitoring device's clock accuracy, and the data acquisition cycle configuration, and is saved during the project deployment phase. When the monitoring device is in a faulty, calibrated, or communication abnormal state, the corresponding monitoring record is marked as a device anomaly; records lacking task numbers, work area numbers, device numbers, monitoring point numbers, or data acquisition times are marked as missing fields. Subsequent datasets will only include records where the time status, device status, and key fields are all valid.

[0026] When forming the evaluation dataset, identical records uploaded repeatedly from the same data source at the same collection time are retained as a single record. Records of the same type from different data sources retain their data source and collection device number respectively. Before entering the environmental assessment system, construction logs, vehicle records, and equipment records undergo field filtering. Vehicle records retain vehicle type, number of transport trips, entry and exit times, and corresponding construction tasks. Equipment records retain equipment number, equipment type, operating status, work area, and corresponding construction tasks. Construction logs retain construction procedures, work areas, task status, and actual work time. After the above processing, a current construction activity record set and a candidate environmental evidence record set are formed. The current construction activity record set includes the current construction task, construction procedures, work area, actual start time, actual end time, associated equipment status, and actual work level, which are used in step 102 to generate target environmental indicators, evaluation period, affected monitoring locations, and background matching conditions. The candidate environmental evidence record set includes target environmental indicators, monitoring point number, collection time, monitoring results, propagation conditions, corresponding construction task status, and data source, which are used to subsequently form the actual environmental status of the current construction activity and to filter the dynamic background status when the current construction activity has not occurred.

[0027] Step 102: Based on the current construction activities and propagation conditions, determine the evaluation section, actual observation location, and background reference range, and generate evaluation constraints.

[0028] Specifically, the system receives the current construction activity record set and the candidate environmental evidence record set output from step 101. Based on the construction tasks, construction procedures, work areas, actual start times, actual end times, associated equipment status, and actual work intensity in the current construction activity record set, the specific construction activities targeted by this evaluation and their scope are determined. Based on the target environmental indicators, monitoring point numbers, collection times, monitoring results, propagation conditions, corresponding construction task status, and data sources in the candidate environmental evidence record set, the temporal, spatial, and propagation relationships between each piece of environmental evidence and the current construction activities are determined. Based on the correspondence between construction activities and environmental data established during the project deployment phase, the system converts the current construction procedures into evaluation media and target environmental indicators. Earthwork excavation, earthwork loading and unloading, and on-site transportation correspond to particulate matter and wind direction and speed records; piling, crushing, and high-noise equipment operations correspond to noise, monitoring periods, and fixed sound barrier status; temporary drainage and foundation pit dewatering discharge correspond to target water quality indicators, flow direction, and flow rate status. When the same construction activity involves two types of environmental media, corresponding evaluation constraints are generated separately, so that each set of evaluation constraints always corresponds to one type of environmental media, one type of propagation condition, and one set of monitoring records.

[0029] The initial evaluation period is formed based on the actual start and end times of the current construction activity. While construction is still ongoing, the temporary evaluation endpoint determined in step 101 is used to form the current initial evaluation period. When equipment is restarted after being stopped, the stop record and restart record serve as the boundary between adjacent evaluation sections. Air and water environment evaluations are further divided into evaluation sections based on continuous changes in propagation direction. When the wind or flow direction enters a new direction category and remains consistent in continuous valid records, the recording time of the first stable occurrence of the new direction is used as the starting point of the new section. Noise evaluation determines the purpose of monitoring points based on the location of the sound source equipment, the actual observation location, and the spatial relationship with fixed sound barriers. New evaluation sections are formed when the location of the sound source equipment or the status of the fixed sound barriers changes.

[0030] For air and water environments, the role consistency value is used to determine whether a stable propagation relationship has been formed between the work area and the candidate monitoring points: ; in, This is the role consistency value between the work area and the candidate monitoring point within the candidate evaluation section; The total number of valid records of propagation conditions within this segment, and at least two; To effectively record the number of records of associated equipment in actual operation, the data is obtained from the equipment status statistics in the current construction activity record set; The number of records indicating the direction of air or water propagation from the work area to the candidate monitoring point; This represents the number of times the propagation direction category switches between adjacent valid records, and its value does not exceed [a certain value]. All of the above items represent the number of records, and all three fractions are dimensionless proportions. Therefore... It is a dimensionless value and its range is to If fewer than two valid propagation condition records are available, the role consistency value is not calculated, and the candidate evaluation segment is marked as having insufficient propagation evidence. The role consistency value reflects the continuity of construction activities, the correspondence of propagation paths, and the stability of propagation direction. During the project commissioning phase, evaluation segments with stable propagation relationships confirmed by on-site records are selected. The role consistency values ​​of each segment are calculated and arranged in ascending order. If there are at least four samples, the value corresponding to the next quarter position in the arrangement is taken as the adoption threshold. If there are fewer than four samples, the minimum value is taken as the adoption threshold. The adoption threshold is saved with the project, environmental medium, and target environmental indicators. When the role consistency value of a candidate monitoring point reaches the adoption threshold, it is determined as the actual observation location of the current evaluation segment.

[0031] For example, a candidate evaluation section for earthwork excavation contains ten valid records. Eight of these records correspond to excavation equipment being in operation, and nine records show that the wind direction shifts from the east side of the foundation pit to the southeast side of the monitoring point, with a direction switch occurring between adjacent records. Take ten, Take eight Take nine. Taking one, the calculated role consistency value is 0.64. When the critical value formed by the project's joint commissioning is 0.6, the monitoring point on the southeast side is determined as the actual observation location of the current evaluation section. After the wind direction stabilizes and changes from southeast to northwest, the next evaluation section is established from the recording time of the first stable occurrence of the new direction, and the purpose of each monitoring point is redefined. For noise evaluation, the actual observation location is determined according to whether there is a direct sound propagation path between the work area and the monitoring point. Monitoring points located on the side of the fixed sound barrier and not affected by other similar sound sources are included in the background reference range.

[0032] After the actual observation location is determined, a background reference range is formed based on the spatial relationship between the work area, the direction of propagation, and other fixed monitoring points. For the air environment, fixed monitoring points located upwind of the current work area, monitoring the same target environmental indicators, and recording continuous data are selected. For the water environment, fixed monitoring points upstream of the drainage path or separated from the current drainage path are selected. For the acoustic environment, fixed monitoring points located on the side shielded by a fixed sound barrier or separated from the direct propagation path of the current sound source are selected. The system simultaneously reads the status of other construction tasks saved in step 101. If other construction activities that may affect the same environmental medium occur within the candidate background time period, the corresponding monitoring records are removed from the background candidate range. For example, when evaluating the impact of particulate matter from earthwork excavation, periods in which earthwork transportation or loading / unloading activities also occur in another work area are not considered as candidate background periods for particulate matter.

[0033] The actual operational level in the current construction activity record set is used to determine the scope of existing monitoring points to be invoked and the tracking sections after the activity ends. Only one major operational level record already determined in step 101 is used for each type of construction activity. Earthwork activities use the number of transport trips, weighbridge records, or cumulative equipment operation records within the evaluation section; drainage activities use drainage equipment operation records and flow status; and piling activities use the continuous operation period of the equipment. During the project deployment phase, based on the regular operation scope and enhanced management starting point recorded in the construction organization plan, the major operational levels are divided into basic operation zones and extended operation zones. When in the basic operation zone, fixed monitoring points in adjacent operation areas within the main propagation path are invoked; when entering the extended operation zone, more distant fixed monitoring points on the same propagation path are added, and the tracking sections pre-registered in the correspondence between construction activities and environmental data are used.

[0034] Background matching conditions are formed based on target environmental indicators, evaluation sections, actual observation locations, and background reference ranges. Air environment is screened sequentially according to the following criteria: consistent target environmental indicators, cessation of current activities, cessation of other similar influencing activities, consistency of monitoring location and role, consistency of wind direction and category, and similar wind speed. Water environment is screened sequentially according to the following criteria: consistent target water quality indicators, cessation of current drainage activities, cessation of other similar drainage activities, consistency of upstream and downstream roles, consistency of flow direction, and similar flow rate. Acoustic environment is screened sequentially according to the following criteria: consistent target noise indicators, cessation of current noise source equipment, cessation of other similar noise sources, consistency of day and night time periods, consistency of fixed sound barrier status, and consistency of monitoring location and role. Candidate records are first screened step-by-step according to the above conditions, then sorted according to the completeness of continuous record coverage. If the coverage is the same, they are sorted according to the time proximity of the candidate time period to the current evaluation section.

[0035] The above processing results in a current construction activity evaluation constraint set and a candidate environmental evidence usage index. The current construction activity evaluation constraint set includes construction tasks, construction procedures, work areas, evaluation media, target environmental indicators, evaluation start and end times, actual observation locations, background reference ranges, work intensity intervals, and background matching conditions. The candidate environmental evidence usage index is organized by evaluation segments, associating each candidate environmental evidence record formed in step 101 with the corresponding construction task and evaluation constraints, and marking it as an actual observation candidate record or a background candidate record. This information is used in step 103 to form the actual environmental state and in step 104 to form the dynamic background state.

[0036] Step 103: Obtain monitoring records of the actual observation location within the evaluation section, and form a representative value of the actual environmental state based on the monitoring records.

[0037] Specifically, the current construction activity evaluation constraint set and candidate environmental evidence usage index output in step 102 are received, and the construction task and evaluation section are used as the main data organization lines for this step. The construction procedures, work areas, evaluation media, target environmental indicators, evaluation start and end times, actual observation locations, and work intensity intervals in the current construction activity evaluation constraint set are used to define the construction objects, environmental objects, time range, spatial range, and work status corresponding to the actual environmental state. The background reference range and background matching conditions are associated with the formed actual environmental state records, allowing step 104 to construct a dynamic background corresponding one-to-one with this state. The candidate environmental evidence usage index is used to locate the original monitoring records saved in step 101. Data marked as actual observation candidate records are used to form the current actual environmental state, and data marked as background candidate records are indexed to the corresponding actual environmental states for use in step 104. Thus, each actual environmental state can be associated with a specific construction task, evaluation section, monitoring equipment, and subsequent background evidence range.

[0038] The system reads actual observation candidate records from the candidate environmental evidence usage index according to the construction task, evaluation medium, and evaluation section, and sequentially verifies the target environmental indicators, monitoring point numbers, and collection times. Records whose monitoring indicators are consistent with the target environmental indicators in the evaluation constraints, whose monitoring point numbers belong to the actual observation locations, and whose collection times fall within the evaluation start and end time are included in the original observation sequence of the current evaluation section. Each record inherits the monitoring point number, collection time, monitoring results, equipment status, and data source, while also associating with the construction procedures, work area, work intensity interval, and the propagation conditions corresponding to the evaluation section. For example, when step 102 determines the fixed monitoring point on the southeast side corresponding to the excavation of the foundation pit on the east side as the actual observation location, the system extracts the particulate matter records of that monitoring point within the corresponding evaluation section; after the propagation direction stabilizes and changes to form the next evaluation section, the system re-establishes the observation sequence according to the actual observation location updated in step 102, ensuring that each record sequence always corresponds to the monitoring location that is actually on the propagation path at that time.

[0039] The system divides the original observation sequence into continuous recording segments based on the operating status of associated equipment, the effective status of actual observation locations, and the range of operational activity. When associated equipment remains operational, monitoring points continuously perform their actual observation purposes, and the operational activity range is within the same range, the corresponding records are grouped into the same continuous recording segment. When the equipment's start / stop status, the monitoring point's purpose, or the operational activity range changes, the moment of the status change is used as the boundary between adjacent recording segments. The representative range of each monitoring record is determined based on adjacent acquisition times. Records located in the middle of a recording segment use the midpoint between adjacent acquisition times as their representative range boundary, while records at the beginning and end of a recording segment use the start and end points of the evaluation segment as their outer boundaries, respectively. The overlapping portion of the record's representative range with the evaluation segment, equipment operational range, effective monitoring point range, and operational activity range is considered the effective coverage area of ​​that record. When a record spans the equipment's stop time or the monitoring point's purpose change time, only the portion falling within the current continuous recording segment is retained, thus ensuring consistency between the actual environmental state and the on-site activity process.

[0040] For particulate matter concentration and other continuous water quality indicators that can be expressed linearly, a classical time-averaging relationship is used to form representative values ​​of the actual environmental state for continuous recording segments. This relationship is derived from interval averages in mathematical analysis; the interval average of a continuous state is obtained by dividing the cumulative result of the state over time by the total duration. Under the condition of discrete data acquisition, assuming that each record remains representative within the effective coverage area, the continuous accumulation process is discretized into the sum of the products of each monitoring result and its effective coverage length, thus yielding: ; in, This represents the actual environmental condition of a construction task within an evaluation section, an actual observation location, and an operational level range. For the first The monitoring results of each valid monitoring record are used to locate the original record of the corresponding fixed monitoring equipment through the candidate environmental evidence usage index; For the first The effective coverage length of a record is determined by the overlap between the range represented by the record and the evaluation section, the equipment operation range, the effective range of the monitoring point, and the operation level range. This represents the number of valid records participating in the calculation within the current continuous record segment. If they belong to the same target environmental indicator and are monitored by the same unit, Using the same unit of time, the molecular weight is the target environmental index multiplied by time, and the denominator is time. and Maintain the same units for target environmental indicators. If the sum of the effective coverage lengths is zero, it is not counted. The continuous record segment was then recorded as insufficient actual evidence.

[0041] Taking a section of earthwork excavation evaluation as an example, three valid particulate matter records were generated at the same actual observation location, with monitoring results of 78, 96, and 90, respectively. Based on adjacent acquisition times and the actual operating range of the equipment, the effective coverage lengths of the three records were 2, 2, and 1, respectively. The original representative range of the second record spanned the brief stop time of the equipment, retaining only the portion overlapping with the equipment's operating range. Substituting the three monitoring results and their effective coverage lengths into the above relationship, the representative value of the actual environmental state was 87.6. This representative value corresponds to the same construction task, the same propagation evaluation section, the same actual observation location, and the same operational level range, and can be directly compared with the corresponding dynamic background state formed in step 104.

[0042] Noise assessment uses equivalent monitoring results from fixed noise monitoring equipment for the assessment section. The system sends the assessment start and end times, actual observation locations, and day / night periods determined in step 102 to the monitoring equipment data interface, reads the section results generated by the monitoring equipment according to its cumulative sound energy processing, and associates them with the current operating status of the sound source equipment and the status of the fixed sound barrier. When the assessment section contains multiple continuous operating segments of equipment, the section results corresponding to each operating segment are read separately. Logarithmic water quality indicators such as pH are represented by the section results output by online monitoring equipment for the assessment section, and the original records are retained in the order of sampling time; concentration-type continuous water quality indicators are represented by the above-mentioned time average relationship. Water quality indicators sampled intermittently are recorded according to sampling location, sampling time, and drainage activity status. When the same assessment section contains multiple valid samples, the results are retained in the order of sampling time, and the sampling result with the highest degree of overlap with the stable operating range of the drainage equipment is used as the representative record of that section.

[0043] When multiple actual observation locations are set up in the same evaluation section, the system generates actual environmental status records for each monitoring location and associates the near-end and far-end monitoring locations according to the propagation path sequence determined in step 102. For example, when a high-level earthwork activity simultaneously calls two fixed monitoring points in the same propagation direction, the two monitoring points generate representative values ​​of the actual environmental status and are jointly associated with the current construction task and the evaluation section. When fixed online monitoring records and on-site inspection records exist at the same monitoring location, the results generated by the fixed online monitoring records are used as continuous status records according to the data usage registered in the project deployment phase, and the inspection records are associated with the corresponding evaluation section according to the collection time and saved as auxiliary evidence.

[0044] The system forms the effective range of actual evidence based on the effective coverage of each continuous recording segment. Each effective range record corresponds to the construction task, evaluation section, actual observation location, start and end time of the continuous recording segment, number of effective records, and data source. When there are continuous gaps between monitoring records, adjacent effective ranges are divided by the gap boundaries. This ultimately forms the current construction activity's actual environmental state record set and the actual evidence effective range record. The current construction activity's actual environmental state record set includes construction task, construction procedure, work area, evaluation medium, target environmental indicators, evaluation section, actual observation location, work level interval, representative value of actual environmental state, original record index, background reference range, background matching conditions, and background candidate record index. The background candidate record index is formed from the portion marked as background candidate records in the candidate environmental evidence usage index of step 102. The actual evidence effective range record includes the effective time range, monitoring location, record coverage, and number of effective records corresponding to each state record. Step 104 locates the original environmental evidence through the background candidate record index and forms a dynamic background state with the same target environmental indicators, spatial role, and comparison range as the actual environmental state according to the background matching conditions.

[0045] Step 104: Based on the background reference range and background matching conditions, extract the inactive state from the historical inactive segment, and make corrections based on the changes in the background reference position to form a dynamic background state representative value.

[0046] Specifically, the system receives the current construction activity's actual environmental status record set and the actual evidence valid range record output from step 103. The current construction activity's actual environmental status record set includes construction tasks, construction procedures, work areas, evaluation media, target environmental indicators, evaluation sections, actual observation locations, work intensity intervals, background reference ranges, background matching conditions, and background candidate record indexes, used to determine the dynamic background construction object and candidate data range. The actual evidence valid range record includes valid start and end times, continuous recording segments, monitoring locations, record coverage, and the number of valid records, used to limit the comparison interval between the dynamic background and the actual environmental status. The system treats each actual environmental status record formed in step 103 as an independent background construction object, establishing a correspondence according to construction tasks, evaluation sections, target environmental indicators, and actual observation locations, enabling the dynamic background status to directly proceed to the next step for comparison with the actual environmental status.

[0047] The system locates the original environmental evidence saved in step 101 using the background candidate record index in the actual environmental status record, and performs step-by-step screening according to the background matching conditions formed in step 102. Candidate sections should use the same target environmental indicators as the current actual environmental status, the current construction activity should be suspended, and there should be no other construction activities that may affect the same environmental medium. For air environment, the monitoring location roles should be consistent, the wind direction category should be consistent, and the wind speed should be similar; for water environment, the upstream and downstream roles should be consistent, the flow direction should be consistent, and the flow rate should be similar; for sound environment, the day and night time periods should be consistent, the status of fixed sound barriers should be consistent, and the relevant sound source equipment should be in a suspended state. The effective coverage of the candidate section is determined by the overlap of the candidate section's start and end times, the effective status of the monitoring equipment, and the continuous acquisition range, and is trimmed according to the continuous length of the effective range of the actual evidence in step 103.

[0048] For particulate matter concentration, dissolved oxygen, and other target environmental indicators expressed linearly and capable of addition and subtraction of similar quantities, three types of data are extracted simultaneously for each historical candidate segment. The first type is the record of the target environmental indicator at the actual observation location within the historical candidate segment under the current state of cessation of construction activities. The second type is the record of the target environmental indicator at the background reference location within the current evaluation segment during the same period. The third type is the record of the target environmental indicator at the background reference location within the same historical candidate segment. The three types of records are used to form the segment representative value according to the time averaging method in step 103. The effective coverage length of the historical candidate segment is determined by the candidate segment boundary, the effective status of the monitoring equipment, and the continuous acquisition range.

[0049] The dynamic background calculation relationship is derived from the difference-in-differences method. First, the state of the actual observation location within a historical inactive segment is obtained. Then, the change of the background reference location from the historical segment to the current segment is superimposed, thereby estimating the state of the actual observation location under the current regional background conditions before the current activity was implemented. When multiple valid historical segments exist, the median value of the estimation results for each segment is taken. ; in, This is a dynamic background state representative value corresponding to an actual environmental state record in step 103; For the first Representative values ​​of target environmental indicators at actual observation locations within each historical candidate section, under the current state of cessation of construction activities; This represents the contemporary target environmental indicator value at the background reference location within the current evaluation section; For the first Representative values ​​of target environmental indicators for background reference locations within each historical candidate segment; This indicates historical candidate segments that meet the background matching criteria. , , and All belong to the same target environmental indicator and are monitored by the same unit. and The differences represent the change in regional background from historical candidate segments to the current evaluation segment; therefore, the dimensions of the addition and subtraction terms in the formula are consistent. When there are an odd number of valid historical candidate segments, the median is the middle value after sorting; when there are an even number, the median is the arithmetic mean of the two middle estimates after sorting; when there are no valid historical candidate segments, a record of insufficient background evidence is formed and is not calculated. .

[0050] For example, the current background reference position representative value of a certain earthwork excavation evaluation section is seventy. The actual observation position representative values ​​of the three valid historical candidate sections are eighty, seventy-seven and eighty-two respectively, and the corresponding background reference position representative values ​​are sixty-five, sixty-four and sixty-six respectively. Thus, three current inactive state estimates of eighty-five, eighty-three and eighty-six are obtained. The median value of eighty-five is taken as the dynamic background state corresponding to the evaluation section and the actual observation position.

[0051] Noise indicators are selected from historically inactive sections based on the same day / night time period, fixed sound barrier status, monitoring location role, and other sound source status. Equivalent monitoring results for each section at the actual observation location are obtained, and the median of the valid candidate results is used to form the dynamic background status. The section results of the current background reference location and the historical background reference location are used to verify whether the regional acoustic environment is in a similar state. If the difference between the two exceeds the background fluctuation range set during the project deployment phase, the corresponding historical candidate section is removed. Indicators such as pH, expressed logarithmically or with two-sided control boundaries, are selected from historically inactive sections based on the same monitoring location role, flow direction, flow rate status, and other drainage activity status. The median of the valid candidate results at the actual observation location is used to form the dynamic background status.

[0052] Candidate historical segments are first screened based on complete consistency in propagation conditions, then sorted from highest to lowest based on the completeness of continuous record coverage. If coverage is the same, they are sorted from most recent to furthest in time from the current evaluation segment. When the number of candidates reaches the minimum configured limit for the project, the top odd-numbered valid segments are selected; when the number of candidates exactly reaches the minimum limit, all valid segments are used; when the number of candidates or the effective coverage is insufficient, a record of insufficient background evidence is generated. The minimum limit is configured during the project deployment phase based on the environmental medium, target environmental indicators, and monitoring frequency, and is saved along with the background matching conditions.

[0053] The above processing results in a dynamic background status record set for the current construction activity and a record set of valid background evidence. The dynamic background status record set includes the construction task, evaluation medium, target environmental indicators, evaluation section, actual observation location, representative value of the dynamic background status, actual environmental status association index, current background reference record index, historical candidate section index, and background matching conditions. The record set of valid background evidence includes the valid start and end time, continuous recording segment, monitoring location, number of candidate sections, and record coverage for each dynamic background status. Step 105 reads the actual environmental status formed in step 103 through the actual environmental status association index and performs corresponding comparisons according to the construction task, evaluation section, target environmental indicators, actual observation location, and valid range.

[0054] Step 105: Based on the representative values ​​of the actual environmental state and the representative values ​​of the dynamic background state, determine the increment of adverse environmental impact and generate an evaluation record.

[0055] Specifically, the system receives the current construction activity dynamic background status record set and background evidence effective range record output in step 104, and uses the construction task, evaluation section, target environmental indicator, and actual observation location as the joint identifier of the evaluation object. The current construction activity dynamic background status record set provides a dynamic background status representative value, actual environmental status association index, current background reference record index, historical candidate section index, and background matching conditions. The system reads the actual environmental status representative value, work area, work degree interval, and actual evidence effective range formed in step 103 through the actual environmental status association index. The background evidence effective range record provides the effective start and end time, continuous record segment, monitoring location, number of candidate sections, and record coverage corresponding to the dynamic background. The system overlaps the actual evidence effective range with the background evidence effective range in time, and establishes evaluation records according to the overlapped continuous segments, so that the actual environmental status and dynamic background status involved in the comparison correspond to the same target environmental indicator, the same actual observation location, and the same effective evaluation range. When an evaluation section contains multiple actual observation locations, evaluation records are established separately, and the propagation path order determined in step 102 is retained.

[0056] For target environmental indicators such as particulate matter concentration, dissolved oxygen, and others expressed linearly and exhibiting a single adverse change direction, a directed difference is used to generate the increment of adverse environmental impact. This calculation is based on the arithmetic difference of similar state quantities and unifies the result direction according to the adverse change direction of the target environmental indicators. ; in, This refers to the incremental adverse environmental impacts resulting from current construction activities in an evaluation section and at an actual observation location. Following the meaning in step 103, the dynamic background state record in step 104 obtains the representative value of the actual environment state through the actual environment state association index. Following the meaning in step 104, it is a dynamic background state representative value corresponding to the actual environmental state; This is the adverse directional coefficient for the target environmental indicator. A value of 1 indicates a more severe impact, while a value of -1 indicates a more severe impact. and Using the same target environmental indicators and the same data expression format, Since it is a dimensionless directional coefficient, therefore and , Maintain the same monitoring unit; if it cannot be confirmed that the adverse direction or the actual environmental condition does not correspond to the dynamic background condition in terms of the same indicator, location, and effective range, do not calculate. This results in insufficient evaluation criteria.

[0057] For example, the representative value of the actual environmental state of particulate matter in an earthwork excavation evaluation section. The value is 118, representing the dynamic background state. It is eighty-five. Take one, and obtain the increment of adverse environmental impact. The value is 33. The representative value of dissolved oxygen in the actual environmental state for a certain drainage activity. The value is 6.2, representing the dynamic background state. It is 7.0. Taking the negative one yields the increment of adverse environmental impact. It is 0.8.

[0058] Noise indicators are converted into linear sound energy based on representative values ​​of the actual environmental state and the dynamic background state, respectively. The linear sound energy corresponding to the dynamic background is subtracted from the linear sound energy corresponding to the actual state. When the subtraction result is greater than zero, the remaining sound energy is converted into the equivalent contribution result corresponding to the current construction activity. When the subtraction result is equal to or less than zero, the newly added noise impact is recorded as zero. The conversion is performed according to the fixed conversion relationship between the equivalent sound level output by the fixed noise monitoring equipment and the linear sound energy. The actual state, dynamic background, and equivalent contribution result use the same sound level unit. The conversion parameters are provided by the monitoring equipment data interface or the sound level calculation configuration during the project deployment phase. For indicators with upper and lower control boundaries, such as pH, the upper and lower boundary directions are determined according to the allowable ranges set in advance by the project. When the actual environmental state approaches or crosses a certain boundary relative to the dynamic background state, the reduction or excess of the remaining allowable amplitude is recorded as an adverse environmental impact, and the corresponding boundary direction is recorded.

[0059] The system determines the evaluation basis status by combining the effective range of actual evidence and the effective range of background evidence. When the two types of effective ranges completely overlap and the number of historical candidate sections meets the project configuration requirements, a valid evaluation result is formed; when the two types of effective ranges partially overlap, an evaluation result is formed only for the overlapping continuous sections; when the number of candidate sections or the recorded coverage area is lower than the project configuration requirements, an evaluation basis deficiency result is formed. Evaluation results from multiple actual observation locations are arranged according to the propagation path determined in step 102. When both the near-end and far-end locations show unfavorable increments in the same direction, the environmental impact is recorded as extending along the propagation path; when unfavorable increments only appear at the near-end location, the impact is recorded as concentrated in the vicinity of the construction area.

[0060] The incremental adverse environmental impact is compared with the pre-set conditions of concern and treatment for the same construction activity and the same target environmental indicator in the project's environmental impact assessment document, discharge permit requirements, or on-site environmental management plan. Simultaneously, the representative value of the actual environmental state is compared with the corresponding environmental control conditions. The conditions of concern, treatment, and environmental control all use the same monitoring unit or corresponding dimensionless state as the target environmental indicator, and their correspondence with construction activities and environmental management measures is preserved. A normal evaluation conclusion is formed when the actual environmental state is within the control range and the incremental adverse environmental impact is lower than the conditions of concern; a concern evaluation conclusion is formed when the actual environmental state is within the control range but the incremental adverse environmental impact reaches the conditions of concern; a treatment evaluation conclusion is formed when the actual environmental state reaches the treatment conditions or the incremental adverse environmental impact reaches the treatment conditions. If the dynamic background state has reached the environmental anomaly condition, but the incremental adverse environmental impact of the current construction activity is lower than the conditions of concern, the evaluation result records that the regional background anomaly and the project's new impact are lower than the conditions of concern.

[0061] After the disposal evaluation conclusion is formed, the system queries the correspondence between construction activities and environmental management measures established during the project deployment phase, based on the construction task, construction procedure, evaluation medium, and target environmental indicators. This correspondence pre-records the invocation order, applicable conditions, execution targets, and permitted control actions for each measure. The system invokes the measure that meets the current triggering conditions and is the first in the sequence, pushing it to the site manager via the project environmental management terminal or sending it to the corresponding environmental protection facilities via an authorized device interface. Simultaneously, it records the construction task, evaluation section, execution target, sending time, and receiving status. If the retest result still meets the disposal conditions, the system selects the next approved measure that meets the applicable conditions according to the pre-defined invocation order.

[0062] After the management measures are implemented, the system re-executes step 101 to obtain the post-treatment construction task status, equipment status, target environmental monitoring data, and propagation condition data. Then, it sequentially executes steps 102 to 105 to generate new evaluation constraints, actual environmental status, dynamic background status, and adverse environmental impact increments corresponding to the retest period. If the retest result is lower than the treatment conditions and the actual environmental status returns to the control range, the management measures are recorded as completed; if the retest result still meets the treatment conditions, the next eligible measure is executed according to the preset call sequence.

[0063] In another embodiment of this disclosure, an intelligent assessment system for environmental impact assessment of construction projects based on multi-source data fusion is provided. Figure 2 A structural block diagram of a system according to an embodiment of the present disclosure is shown. Figure 2 As shown, the system includes: The data acquisition module is used to acquire the construction task status and equipment operation status of the current construction project, confirm the current construction activities, and acquire candidate environmental evidence records; The constraint generation module is used to determine the evaluation section, actual observation location, and background reference range based on the current construction activities and propagation conditions, and to generate evaluation constraints. The actual state calculation module is used to obtain the monitoring records of the actual observation location within the evaluation section, and to form a representative value of the actual environmental state based on the monitoring records; The dynamic background construction module is used to extract inactive states from historical inactive segments based on background reference range and background matching conditions, and to make corrections based on changes in background reference position to form a dynamic background state representative value. The evaluation completion module is used to determine the increment of adverse environmental impacts based on the representative values ​​of the actual environmental state and the representative values ​​of the dynamic background state, and to generate evaluation records.

[0064] It is worth noting that the specific workflow of the intelligent assessment system for environmental impact assessment of construction projects based on multi-source data fusion provided in this embodiment of the invention is the same as that of the intelligent assessment method for environmental impact assessment of construction projects based on multi-source data fusion described in the above embodiments, and will not be repeated here.

[0065] This invention also provides an intelligent assessment device for environmental impact assessment of construction projects based on multi-source data fusion, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor. When the processor executes the computer program, it implements the steps as described in the above embodiments of the intelligent assessment method for environmental impact assessment of construction projects based on multi-source data fusion; or, when the processor executes the computer program, it implements the functions of each module in the above system embodiments.

[0066] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An intelligent assessment method for environmental impact assessment of construction projects based on multi-source data fusion, characterized in that, include: Obtain the current construction task status and equipment operation status of the construction project, confirm the current construction activities, and obtain candidate environmental evidence records; Based on the current construction activities and propagation conditions, the evaluation section, actual observation location, and background reference range are determined, and evaluation constraints are generated. Acquire monitoring records of the actual observation location within the evaluation section, and form a representative value of the actual environmental state based on the monitoring records; Based on the background reference range and background matching conditions, inactive states are extracted from historical inactive segments and corrected by combining changes in the background reference position to form dynamic background state representative values. Based on the representative values ​​of the actual environmental state and the representative values ​​of the dynamic background state, the increment of adverse environmental impact is determined, and an evaluation record is generated.

2. The intelligent assessment method for environmental impact assessment of construction projects based on multi-source data fusion as described in claim 1, characterized in that, The process of obtaining the current construction task status and equipment operation status of the construction project, and confirming the current construction activities, includes: Read the construction task records that are in execution and the equipment operation records of associated equipment; When the construction task record is in execution state and the associated equipment generates the equipment operation record, or when the on-site measurement record corresponding to the construction task record changes continuously, the corresponding construction task is determined as the current construction activity. The actual start time is determined based on the time when the first associated device starts operating after the current construction activity enters the execution state. The actual end time is determined based on the later occurrence of the end time record of the current construction activity and the stop-operation record of all associated equipment.

3. The intelligent assessment method for environmental impact assessment of construction projects based on multi-source data fusion according to claim 1, characterized in that, The process of determining the evaluation section, actual observation location, and background reference range based on the current construction activities and propagation conditions, and generating evaluation constraints, includes: The evaluation sections are divided according to the continuous change in the direction of propagation; For air and water environments, the role consistency value is calculated based on the total number of valid records, the number of equipment operation status records, the number of propagation direction pointing records, and the number of direction switching times. When the role consistency value reaches the adoption threshold, the corresponding candidate monitoring point is determined as the actual observation location; For the acoustic environment, the actual observation position is determined based on the spatial relationship between the location of the sound source equipment, the actual observation position, and the fixed sound barrier; The background reference range is formed based on the spatial relationship between the work area, the direction of propagation, and other fixed monitoring points.

4. The intelligent assessment method for environmental impact assessment of construction projects based on multi-source data fusion according to claim 1, characterized in that, The method further includes: Background matching conditions are formed based on the target environmental indicators, the evaluation section, the actual observation location, and the background reference range; For air quality, the following criteria are used for screening: consistent target environmental indicators, cessation of current activities, cessation of similar impacting activities, consistency of monitoring location and role, consistency of wind direction and category, and similar wind speed status. For the water environment, the selection is carried out in the following order: consistent target water quality indicators, cessation of current drainage activities, cessation of similar drainage activities, consistency of upstream and downstream roles, consistency of flow direction, and similar flow status. For the acoustic environment, the selection criteria are as follows: consistent target noise index, current sound source equipment stopped, similar sound sources stopped, consistent day and night time, consistent status of fixed sound barriers, and consistent monitoring position and role.

5. The intelligent assessment method for environmental impact assessment of construction projects based on multi-source data fusion according to claim 1, characterized in that, The step of obtaining monitoring records of the actual observation location within the evaluation section, and forming a representative value of the actual environmental state based on the monitoring records, includes: Based on the operating status of the associated equipment, the effective status of the actual observation location, and the range of operational intensity, the monitoring records are divided into continuous recording segments; The effective coverage length is determined based on the overlap between the representative range of each monitoring record and the evaluation section, equipment operation range, effective monitoring point range, and operation level range. Based on the monitoring results of each monitoring record within the continuous recording segment and the effective coverage length, the representative value of the actual environmental state is calculated.

6. The intelligent assessment method for environmental impact assessment of construction projects based on multi-source data fusion according to claim 1, characterized in that, The step of extracting inactive states from historical inactive segments based on the background reference range and background matching conditions, and correcting them by incorporating changes in the background reference position, to form a dynamic background state representative value, includes: Filter historical inactive segments according to the background matching criteria; Extract the first historical data, the second historical data, and the third historical data. The first historical data is the representative value of the target environmental index of the actual observation location within the historical inactive section. The second historical data is the representative value of the target environmental index of the background reference location within the current evaluation section. The third historical data is the representative value of the target environmental index of the background reference location within the historical inactive section. For each historical inactive segment, the first historical data is added to the difference between the second historical data and the third historical data to obtain the current inactive state estimate; The median value of the current inactive state estimate is taken as the representative value of the dynamic background state.

7. The intelligent assessment method for environmental impact assessment of construction projects based on multi-source data fusion according to claim 1, characterized in that, The step of determining the increment of adverse environmental impact based on the representative value of the actual environmental state and the representative value of the dynamic background state includes: For the target environmental index expressed by linear numerical values, the representative value of the actual environmental state is subtracted from the representative value of the dynamic background state, and the increment of the adverse environmental impact is determined based on the adverse direction coefficient. For the noise index, the representative value of the actual environmental state and the representative value of the dynamic background state are converted into linear sound energy respectively. The linear sound energy corresponding to the dynamic background is subtracted from the linear sound energy corresponding to the actual state, and the remaining sound energy is converted into the contribution equivalent result as the increment of the adverse environmental impact. For indicators with upper and lower control boundaries, the incremental adverse environmental impact is determined based on the remaining allowable reduction or excess amount of the actual environmental state relative to the dynamic background state when it approaches or exceeds the boundary.

8. The intelligent assessment method for environmental impact assessment of construction projects based on multi-source data fusion according to claim 1, characterized in that, After generating the evaluation record, the method further includes: The incremental adverse environmental impact is compared with the pre-set concern and disposal conditions; When the aforementioned disposal conditions are met, the pre-established correspondence between construction activities and environmental management measures is queried based on the construction task, construction procedure, evaluation medium, and target environmental indicators. Invoke the environmental management measures that meet the triggering conditions and are listed first in the sequence, and push them to the on-site person in charge or send them to the corresponding environmental protection facilities; Reacquire the construction task status, equipment status, target environmental monitoring data, and propagation condition data after the treatment, and re-execute the steps from acquiring the current construction task status of the project to generating the evaluation record to generate the retest results; If the retest result still meets the disposal conditions, the environmental management measures that meet the applicable conditions and are scheduled later in the preset call order shall be executed.

9. The intelligent assessment method for environmental impact assessment of construction projects based on multi-source data fusion according to claim 1, characterized in that, The process of obtaining the current construction task status and equipment operation status of the construction project, confirming the current construction activities, and obtaining candidate environmental evidence records includes: Based on the actual start and end times of the current construction activities, time-correlate the equipment operation records, engineering quantity records, environmental monitoring records, and propagation condition records; Spatial association is performed based on the pre-registered work area number and monitoring point number, and monitoring records related to the current work area are included in the candidate range; When the time difference between the device acquisition time and the project server time exceeds the preset allowable range, it is marked as a time anomaly; When the monitoring device is in a faulty, calibration, or communication abnormal state, it is marked as a device abnormality. Only records with valid time status, equipment status, and key fields are retained to form the current construction activity record set and the candidate environment evidence record set.

10. An intelligent assessment system for environmental impact assessment of construction projects based on multi-source data fusion, characterized in that: include: The data acquisition module is used to acquire the construction task status and equipment operation status of the current construction project, confirm the current construction activities, and acquire candidate environmental evidence records; The constraint generation module is used to determine the evaluation section, actual observation location, and background reference range based on the current construction activities and propagation conditions, and generate evaluation constraints. The actual state calculation module is used to obtain the monitoring records of the actual observation location within the evaluation section, and to form a representative value of the actual environmental state based on the monitoring records. The dynamic background construction module is used to extract inactive states from historical inactive segments based on the background reference range and background matching conditions, and to make corrections based on changes in the background reference position to form a dynamic background state representative value. The evaluation completion module is used to determine the increment of adverse environmental impact based on the representative value of the actual environmental state and the representative value of the dynamic background state, and to generate an evaluation record.

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