CN115496436A - Radioactive substance road transportation path planning system, method and storage medium - Google Patents
Radioactive substance road transportation path planning system, method and storage medium Download PDFInfo
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Abstract
The invention provides a radioactive substance road transportation path planning system, a method and a storage medium, belonging to the technical field of radioactive substance transportation hazard monitoring. The method can comprehensively consider all radiation influences of radioactive substances including penetrating radiation, obtain the collective weighted dose of each transportation section of the potential section combination, plan the path, and can better guarantee radiation safety and manage road transportation risks.
Description
Technical Field
The invention mainly relates to the technical field of radioactive substance transportation hazard monitoring, in particular to a radioactive substance road transportation path planning system, a radioactive substance road transportation path planning method and a storage medium.
Background
Once a substance leakage accident occurs during substance transportation of radioactive/potentially radioactive substances such as nuclear materials, nuclear components, nuclear equipment, neutron source devices and the like, radioactive nuclides can be released into the environment, radiation influence is generated on human bodies and the environment, the hazard time of the radioactive/potentially radioactive substance transportation is longer than that of the traditional hazardous chemical substance leakage, and the social influence is larger. The radioactive substance leakage accident is characterized by being caused by radioactive nuclide, on one hand, the radioactivity has certain penetrability, and even if no accident happens, the surface of the goods package still has certain radiation dose. On the other hand, due to the influence of the half-life of nuclides, the consequent harm duration is longer, and the release of the radionuclide is influenced by various factors such as a cargo bag, the environment, the weather, surrounding people and the like, so that the planning and research of the transportation path have very important significance.
The research on road transportation risks starts from 1970, more nuclear-involved substance transportation risks are researched in 2000, a rapid development stage is started before and after 2010, the research range is enriched year by year, and the research direction is gradually expanded. The dangerous goods transportation accident is highly valued for a long time, the system and the regulation related to the dangerous goods transportation are mainly concerned in the initial stage, the characteristic rule and the reason of the dangerous goods transportation accident are researched, a risk assessment model, a monitoring early warning system, dynamic identification, tracking and positioning and the like are established, certain progress is made on the safety prevention and control research of the material transportation with radioactivity/potential radioactivity, but the transportation accident still occurs and the consequence harm is serious, and the emergency prevention and control technology of the material transportation with radioactivity/potential radioactivity needs to be continuously and deeply researched. On one hand, the traditional radioactive substance transportation risk assessment usually only focuses on accidents in the transportation process, but lacks penetrability leakage influence on the radioactive substance in the normal transportation process; on the other hand, the radiation dose influence calculation for the transportation accident is too simple, only public dose of the transportation accident is usually concerned, and actually, the dose influence of workers is larger because the workers are closer to the radioactive substance release point. Therefore, the existing method is not beneficial to planning and optimizing the road transportation path of the radioactive substance, so that the prevention control and the overall management decision of the transportation risk are difficult to support.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a radioactive substance road transportation path planning system, a radioactive substance road transportation path planning method and a storage medium.
The technical scheme for solving the technical problems is as follows: a radioactive material road transportation path planning system comprises a data acquisition device, a penetrating radiation dose estimator, an accident radiation dose estimator, a road segment dose estimator and a path planner:
the data acquisition unit is used for collecting radiation risk influence factor information of radioactive substance road transportation;
the penetrating radiation dose evaluator is used for evaluating the collective penetrating radiation dose of radioactive substances in road transportation under normal conditions according to the radiation risk influence factor information;
the accident radiation dose evaluator is used for evaluating the accident occurrence probability of the radioactive substance road transportation according to the radiation risk influence factor information and evaluating the potential radiation dose of the radioactive substance road transportation under the accident condition;
the road section dose evaluator is used for carrying out road section dose evaluation according to the collective penetrating radiation dose, the accident occurrence probability and the potential radiation dose to obtain a collective weighted dose;
the path planner is used for respectively calculating the collective weighted dose of each transportation section of the potential section combination according to the potential section combination of radioactive substance road transportation and combining the collective weighted dose, sequencing according to the collective weighted dose of each transportation section, and finally outputting the sequencing result of road transportation risks in a list form.
Another technical solution of the present invention for solving the above technical problems is as follows: a method for planning a road transportation path of radioactive substances comprises the following steps:
collecting radiation risk influence factor information of radioactive substance road transportation;
evaluating the collective penetrating radiation dose of the radioactive substance road transportation under the normal condition according to the radiation risk influence factor information;
evaluating the accident occurrence probability of the road transportation of the radioactive substances according to the radiation risk influence factor information, and evaluating the potential radiation dose of the road transportation of the radioactive substances under the accident condition;
performing road section dose evaluation according to the collective penetrating radiation dose, the accident occurrence probability and the potential radiation dose to obtain a collective weighted dose;
and respectively calculating the collective weighted dose of each transportation section of the potential section combination according to the potential section combination and the collective weighted dose of the radioactive substance road transportation, sequencing according to the collective weighted dose of each transportation section, and finally outputting the sequencing result of the road transportation risk in a list form.
Another technical solution of the present invention for solving the above technical problems is as follows: a radioactive material road transportation path planning system, comprising a memory, a processor and a computer program stored in the memory and operable on the processor, wherein when the processor executes the computer program, the radioactive material road transportation path planning method is implemented.
Another technical solution of the present invention for solving the above technical problems is as follows: a computer-readable storage medium, which stores a computer program, wherein when the computer program is executed by a processor, the method for planning a road transportation path of radioactive materials is implemented.
The invention has the beneficial effects that: the method comprises the steps of obtaining a collective weighted dose by evaluating the collective penetrating radiation dose, the accident occurrence probability, the potential radiation dose and the radiation risk influence factor information, comprehensively considering all radiation influences of radioactive substances including penetrating radiation, obtaining the collective weighted dose of each transportation road section of a potential road section combination, planning a path according to the collective weighted dose, and managing road transportation risks.
Drawings
Fig. 1 is a block diagram of a radioactive substance road transportation path planning system according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a method for planning a road transportation path of radioactive materials according to an embodiment of the present invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Example 1:
as shown in fig. 1, a radioactive material road transportation path planning system includes a data collector, a penetrating radiation dose estimator, an accident radiation dose estimator, a road segment dose estimator, and a path planner:
the data acquisition unit is used for collecting radiation risk influence factor information of radioactive substance road transportation;
the penetrating radiation dose evaluator is used for evaluating the collective penetrating radiation dose of radioactive substances in road transportation under normal conditions according to the radiation risk influence factor information;
the accident radiation dose evaluator is used for evaluating the accident occurrence probability of the radioactive substance road transportation according to the radiation risk influence factor information and evaluating the potential radiation dose of the radioactive substance road transportation under the accident condition;
the road section dose estimator is used for estimating road section dose according to the collective penetrating radiation dose, the accident occurrence probability and the potential radiation dose to obtain a collective weighted dose;
the path planner is used for respectively calculating the collective weighted dose of each transportation section of the potential section combination according to the potential section combination of radioactive substance road transportation and combining the collective weighted dose, sequencing according to the collective weighted dose of each transportation section, and finally outputting the sequencing result of road transportation risks in a list form.
In the above embodiment, the collective weighted dose is obtained by evaluating the collective penetrating radiation dose, the accident occurrence probability, the potential radiation dose and the radiation risk influence factor information, the collective weighted dose of each transport section of the potential section combination is obtained by comprehensively considering all radiation influences of radioactive substances including penetrating radiation, and path planning is performed on the basis of the collective weighted dose, so that the radiation safety can be better guaranteed, and the road transport risk can be managed.
On the basis of the above embodiment, the penetrating radiation dose estimator is specifically configured to:
obtaining radioactive substance information, parcel information, personnel information, vehicle information and path information from the radiation risk influence factor information;
evaluating according to the radioactive substance information, the package information, the personnel information, the vehicle information and the path information to obtain the penetrating radiation dose of the package vehicles, the quantity and the position layout of the personnel and the package, the length of the transportation path and the average speed of the vehicles of the i-th transportation section, wherein the i-th transportation section belongs to one section of the radioactive substance road,
and calculating the radiation dose caused by a small amount of nuclides diffused into the environment by an atmospheric diffusion method and by combining the radionuclide, weather and environment information to obtain the penetrating radiation dose of each worker in the ith transportation section, and summing the penetrating radiation doses of each worker to obtain a collective penetrating radiation dose.
The following is illustrated by way of example:
the penetrating radiation dose evaluator calculates the penetrating radiation dose of each worker in the transportation section according to the penetrating radiation dose of a parcel vehicle, the number and the position layout of workers and parcels, the transportation path length and the average speed of the vehicle, which are acquired or evaluated in the field, of a first transportation section, and comprises the steps of calculating the radiation dose caused by a small amount of nuclide diffused into the environment by adopting an atmospheric diffusion method according to radionuclide, weather and environmental information, wherein in the example, only the nuclide 3 H, calculating the radiation dose caused by environmental diffusion; and the collective penetrating radiation dose D11 of the calculation staff is summed.
The meteorological field and longitude and latitude information of the place where the vehicle is located cover the external 20km range at the two ends of the route. On-road measurement points are pre-allocated, for example, 1 point every 4 kilometers. The relevant parameters include: the method comprises the following steps of transportation distance, the number of workers, the average distance between the workers and a cargo bag, the cargo bag density in the X direction of the vehicle, the cargo bag density in the Y direction of the vehicle, the cargo bag surface dosage, the dosage 2 meters away from the cargo bag, the X direction coordinate of a diffusion field, the Y direction coordinate of the diffusion field, the Z direction coordinate, the number of diffusion particles and a calculation range. Other parameters are time, speed, etc.
For example, specific numerical values of the first transportation section are shown in table 1, and table 1 is an example of the influence factor of the transportation section.
Table 1:
in addition, the characteristic substance contains some radionuclides, so that parameters such as nuclide release activity, half-life, dry deposition rate, dose conversion factor and the like need to be collected, and specifically, as shown in table 2, table 2 is a radionuclide parameter.
Table 2:
the collective penetrating radiation dose D11 calculated by the penetrating radiation dose estimator for the crew members on the first transportation segment resulted in 1.4 mSv.
In the above embodiment, collective penetrating radiation dose of radioactive substance road transportation under normal conditions can be evaluated by the penetrating radiation dose evaluator, so that the dose can be evaluated by the road segment dose evaluator.
On the basis of the above embodiment, the accident radiation dose estimator is specifically configured to:
acquiring radioactive substance information, parcel information, personnel information, vehicle information, path information, weather information, environment information and accident influence information from the radiation risk influence factor information;
classifying accidents of radioactive substance road transportation by adopting a fault tree and event tree method according to radioactive substance information, package information, personnel information, vehicle information, weather information, environment information and accident influence information of the ith transportation road section and combining the damage degree of a package in an accident and an accident handling mode to obtain the accident occurrence probability of various accidents of the ith transportation road section, wherein the ith transportation road section belongs to one section of the radioactive substance road;
calculating the release amount of radioactive substances according to the damage degree of a cargo package in a potential accident of the ith transportation section and the timeliness of accident handling by adopting an atmospheric diffusion method and different emergency evacuation modes, respectively calculating the potential radiation dose of each worker and the public in the accident of the ith transportation section by combining the number, the position layout, the weather information and the environmental information of the workers and the public, summing up the potential radiation dose of a worker collective and summing up the potential radiation dose of a public collective.
The following is illustrated by way of example:
the accident radiation dose evaluator adopts a fault tree and event tree method, classifies accidents of radioactive substance road transportation according to radioactive substances, goods packages, personnel, vehicles, weather, environment and accident information of a first transportation road section by combining damage degree of the goods packages in the accidents and an accident handling mode, and evaluates occurrence probability P1 of various accidents of the transportation road section; in this example, the accident probability is 0.
The accident radiation dose evaluator calculates the release amount of radioactive substances according to the damage degree of a package in a potential accident of the first transportation section and the timeliness of accident handling; and respectively calculating the potential radiation dose of each worker and the public in the accident of the transportation section by combining the number and the position layout of the workers and the public, weather and environmental information and adopting an atmospheric diffusion method and different emergency evacuation modes, and respectively adding the calculated potential radiation dose of the workers and the public. In the example, the potential radiation dose is not 0, but because the accident probability is 0, the road section dose evaluator respectively gives weighting coefficients Aj to the collective radiation doses of the workers and the public in various accidents j of each transportation road section, and multiplies the weighting coefficients Aj by the corresponding accident occurrence probability P1 (namely 0), so that the collective accident dose D21 of the workers forming the transportation road section is 0, and the collective accident dose D31 of the public is 0;
finally, the section dose estimator assigns weighting factors B1=0.2, B2=0.4, and B3=1 to the collective incident dose D21 of the worker, the public collective incident dose D31, and the collective penetrating radiation dose D11 of the first transportation section, respectively, and adds up the collective weighted dose D41 constituting the transportation section to 1.4 mSv. The weighting coefficients Bk can be generated in a variety of ways, and are scored by expert evaluation.
The path planner dynamically segments different road transportation paths, respectively calculates the total path collective weighted dose D5m of each transportation path m, compares the D5m related to each transportation path, and dynamically plans, sequences and optimizes the transportation paths.
The present example has 6 transport sections, and the calculation results of the collective weighted dose D4i for each transport section are shown in table 3, and table 3 shows the parameter and dose results for each transport section.
Table 3:
| each road section | Length (kilometer) | Transport time (hours) | Collective weighted dose D41 (mSv person) |
| 1 | 200 | 2.0 | 1.40 |
| 2 | 220 | 2.0 | 1.40 |
| 3 | 260 | 3.3 | 2.10 |
| 4 | 230 | 3.2 | 2.15 |
| 5 | 260 | 2.8 | 1.95 |
| 6 | 280 | 2.8 | 2.10 |
The calculation results of the path planner for the total-path collective weighted doses D51 and D52 for the 2 potential transportation section combinations are shown in table 4, and the influence of all road transportation risks is compared in a list manner for decision selection, and table 4 is the parameters and calculation results of each transportation path.
Table 4:
in addition to the above example, a transport vehicle in which an accident of leakage of radioactive materials occurs during transportation is taken as an example.
The penetrating radiation dose estimator is based on penetrating radiation of a luggage vehicle of a first transportation section collected or estimated in the fieldThe method comprises the following steps of calculating the penetrating radiation dose of each worker in a transportation section, including calculating the radiation dose caused by a small amount of nuclides diffused into the environment according to the radionuclide, weather and environmental information by adopting an atmospheric diffusion method, wherein the penetrating radiation dose, the number and position layout of the workers and the luggage, the length of the transportation section and the average speed of vehicles are calculated. In this example, the nuclein 3 H、 235 U、 239 PU needs to calculate radiation dose caused by environmental diffusion; and the collective penetrating radiation doses D1i of the calculation staff members are summed. As shown in table 5 below, table 5 is the parameters of the radionuclides.
Table 5:
the collective penetrating radiation dose D11 for the workers on the first transportation segment calculated by the penetrating radiation dose estimator resulted in 1.4 mSv.
The accident radiation dose evaluator adopts a fault tree and event tree method, classifies accidents of radioactive substance road transportation according to radioactive substances, packages, personnel, vehicles, weather, environment and accident information of a first transportation road section by combining damage degree of the packages in the accidents and an accident handling mode, and evaluates occurrence probability P1 of various accidents of the transportation road section.
The factors, patterns and probabilities of the radioactive substance leakage accident are shown in table 6, and table 6 shows the factors of the radioactive substance leakage accident.
Table 6:
| code | Influencing factors and patterns | Probability of occurrence |
| X 1 | The container is damaged and leaks due to misoperation during loading and unloading of the materials | 1.0×10-6 |
| X 2 | The container being damaged by traffic accident | 1.8×10-7 |
| X 3 | The cover of the sealing container is uncovered | 1.0×10-2 |
| X 4 | Leakage of package-damaging substances caused by vehicle vibration | 6.2×10-4 |
The accident radiation dose evaluator adopts a fault tree method to model the influence mode and the occurrence probability of the transport risk influence factors, establishes a fault tree model by taking the influence factors of the radioactive substance leakage accident as basic events, adopts an event tree method to model the process of the radioactive substance leakage accident and classifies potential transport accidents, and the fault tree model comprises 2 types: the radioactive substance leaks due to traffic accidents and the radioactive substance leaks due to the failure of the container seal. And corresponding the accident sequence of all the event trees to the 2 types of accidents so as to calculate the 2 types of accident occurrence probability in the following step.
After the accident radiation dose evaluator establishes the fault tree model and the event tree model, calculating the occurrence probability of the road transportation accident represented by each accident sequence in the event tree model according to the models; the event occurrence probability of each type of leakage accident is obtained from the sum of the accident sequence probabilities of all the event trees corresponding to the leakage accident, and the final calculation result is shown in table 7, where table 7 is the probability of the radioactive substance leakage accident.
Table 7:
| serial number | Accidents by leakage | Probability of occurrence |
| 1 | Leakage of radioactive substance caused by traffic accident | 6.2×10 -6 |
| 2 | Leakage of radioactive material due to failure of container seal | 6.5×10 -6 |
The accident radiation dose evaluator calculates the release amount of radioactive substances according to the damage degree of the goods package in the potential accident of the first transportation section and the timeliness of accident handling; and respectively calculating the potential radiation dose of each worker and the public in the accident of the transportation section by combining the number and the position layout of the workers and the public, weather and environmental information and adopting an atmospheric diffusion method and different emergency evacuation modes, and respectively adding the calculated collective potential radiation dose of the workers and the collective potential radiation dose of the public. In this example, the potential radioactive sources for the class 2 incidents are the same. The calculated collective potential radiation dose to the staff is 3500mSv and the calculated collective potential radiation dose to the public is 270000 mSv.
Because the accident probability is not 0, according to the section dose evaluator, weighting coefficients A1=1 and A2=1 are respectively given to the collective radiation doses of the workers and the public in the 2 types of accidents of the first transportation section, and the weighting coefficients are multiplied by the corresponding accident occurrence probability P1, so that the collective accident dose D21 of the workers forming the transportation section is 0.044mSv people, and the collective accident dose D31 of the public is 0.34mSv people.
In the above embodiment, the accident radiation dose estimator is used to estimate the potential radiation dose of radioactive substance in road transportation under the accident condition, so as to be used for planning by the road segment dose estimator.
On the basis of the above embodiment, the road segment dose estimator is specifically configured to:
respectively giving weight coefficients to the potential radiation dose of the staff collective and the potential radiation dose of the public collective in various accidents of the i-th transportation section, multiplying the weight coefficient corresponding to the potential radiation dose of the staff collective with the accident occurrence probability of the i-th transportation section to obtain the staff collective accident dose D2i of the i-th transportation section, and multiplying the potential radiation dose of the public collective with the accident occurrence probability of the i-th transportation section to obtain the public collective accident dose D3i of the i-th transportation section;
and respectively giving weight coefficients Bk to the staff collective incident dose D2i, the public collective incident dose D3i and the collective penetrating radiation dose D1i of the ith transportation section, and adding to form a collective weighted dose D4i of the ith transportation section.
The following is illustrated by way of example:
the section dose evaluator assigns weighting coefficients B1=0.2, B2=0.5 and B3=1 to the collective incident dose D21 of the staff, the public collective incident dose D31 and the collective penetrating radiation dose D11 of the first transportation section respectively, and adds up the collective weighted dose D41 forming the transportation section to be 0.0088+0.17+1.4= 1.58mSv.
The example has 6 transport sections, and the calculation results of the collective weighted dose D4i of each transport section are shown in table 8, and table 8 shows the parameters and dose results of each transport section.
Table 8:
in the embodiment, the collective accident dose of the staff and the public collective accident dose can be calculated, and the collective weighted dose of the transportation section can be obtained through the weight and can be planned by the path planner.
On the basis of the above embodiment, the path planner is specifically configured to:
according to a topological method, combining each potential road section where a radioactive substance road runs from a transportation starting point to a transportation terminal point to generate a point diagram, and taking the road between two adjacent points as a section of transportation road section according to the point diagram so as to segment all the potential road section combinations;
and dynamically adjusting the sections of different transportation road sections according to the collective weighted dose of all the transportation road sections to obtain all transportation road section combinations from the transportation starting point to the transportation terminal point, respectively calculating the total-path collective weighted dose of the transportation road section combinations, comparing the total-path collective weighted doses corresponding to the transportation road section combinations, sequencing the transportation road section combinations according to the comparison result, and outputting the sequencing result of the road transportation risks in a list form.
The following is illustrated by way of example:
the path planner dynamically segments different road transportation paths, respectively calculates the total path collective weighted dose D5m of each transportation path m, compares the D5m related to each transportation path, and dynamically plans, sequences and optimizes the transportation paths.
The calculation results of the path planner for the total path collective weighted dose D5m of the 2 potential transportation section combinations are shown in table 9, and the influence of the transportation risk of other roads is compared in a list manner for decision selection, and table 9 is the parameter and calculation result of each transportation path.
Table 9:
in the above embodiment, the influence of the transportation risk on other roads can be finally compared by comparing the total path collective weighted dose corresponding to each transportation section combination, so as to be used for path planning decision selection.
Example 2:
as shown in fig. 2, a method for planning a road transportation path of radioactive materials includes the following steps:
collecting radiation risk influence factor information of radioactive substance road transportation;
evaluating the collective penetrating radiation dose of radioactive substance road transportation under normal conditions according to the radiation risk influence factor information;
evaluating the accident occurrence probability of the radioactive substance road transportation according to the radiation risk influence factor information, and evaluating the potential radiation dose of the radioactive substance road transportation under the accident condition;
performing road section dose evaluation according to the collective penetrating radiation dose, the accident occurrence probability and the potential radiation dose to obtain a collective weighted dose;
and respectively calculating the collective weighted dose of each transportation section of the potential section combination according to the potential section combination and the collective weighted dose of the radioactive substance road transportation, sequencing according to the collective weighted dose of each transportation section, and finally outputting the sequencing result of the road transportation risk in a list form.
Specifically, the evaluating the collective penetrating radiation dose of the radioactive substance road transportation under the normal condition according to the radiation risk influence factor information specifically includes:
obtaining radioactive substance information, parcel information, personnel information, vehicle information and path information from the radiation risk influence factor information;
evaluating according to the radioactive substance information, the package information, the personnel information, the vehicle information and the path information to obtain the penetrating radiation dose of the package vehicles, the quantity and the position layout of the personnel and the packages, the length of the transportation path and the average speed of the vehicles of the i-th transportation section, wherein the i-th transportation section belongs to one section of the radioactive substance road,
and calculating the radiation dose caused by a small amount of nuclides diffused into the environment by an atmospheric diffusion method and by combining the radionuclide, weather and environment information to obtain the penetrating radiation dose of each worker in the ith transportation section, and summing up the penetrating radiation doses of each worker to obtain a collective penetrating radiation dose.
Specifically, the evaluating the accident occurrence probability of the radioactive substance road transportation according to the radiation risk influence factor information, and evaluating the potential radiation dose of the radioactive substance road transportation under the accident condition specifically include:
acquiring radioactive substance information, parcel information, personnel information, vehicle information, path information, weather information, environment information and accident influence information from the radiation risk influence factor information;
classifying accidents of radioactive substance road transportation by adopting a fault tree and event tree method according to radioactive substance information, package information, personnel information, vehicle information, weather information, environment information and accident influence information of the ith transportation section and combining the damage degree of a package in an accident and an accident handling mode to obtain the accident occurrence probability of various accidents of the ith transportation section, wherein the ith transportation section belongs to one section of the radioactive substance road;
calculating the release amount of radioactive substances according to the damage degree of a cargo package in a potential accident of the ith transportation section and the timeliness of accident handling by adopting an atmospheric diffusion method and different emergency evacuation modes, respectively calculating the potential radiation dose of each worker and the public in the accident of the ith transportation section by combining the number, the position layout, the weather information and the environmental information of the workers and the public, summing up the calculated collective potential radiation dose of the workers and summing up the collective potential radiation dose of the public.
Example 3:
a road transportation path planning system for radioactive materials, which comprises a memory, a processor and a computer program stored in the memory and operable on the processor, and when the processor executes the computer program, the road transportation path planning system for radioactive materials implements the road transportation path planning method for radioactive materials as described above.
Example 4:
a computer-readable storage medium, which stores a computer program, wherein when the computer program is executed by a processor, the method for planning a road transportation path of radioactive materials is implemented.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention essentially or partially contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A radioactive substance road transportation path planning system is characterized by comprising a data collector, a penetrating radiation dose evaluator, an accident radiation dose evaluator, a road segment dose evaluator and a path planner:
the data acquisition unit is used for collecting radiation risk influence factor information of radioactive substance road transportation;
the penetrating radiation dose evaluator is used for evaluating the collective penetrating radiation dose of radioactive substances in road transportation under normal conditions according to the radiation risk influence factor information;
the accident radiation dose evaluator is used for evaluating the accident occurrence probability of the radioactive substance road transportation according to the radiation risk influence factor information and evaluating the potential radiation dose of the radioactive substance road transportation under the accident condition;
the road section dose estimator is used for estimating road section dose according to the collective penetrating radiation dose, the accident occurrence probability and the potential radiation dose to obtain a collective weighted dose;
the path planner is used for respectively calculating the collective weighted dose of each transportation section of the potential section combination according to the potential section combination of radioactive substance road transportation and combining the collective weighted dose, sequencing according to the collective weighted dose of each transportation section, and finally outputting the sequencing result of road transportation risks in a list form.
2. The radioactive material road transportation path planning system according to claim 1, wherein the penetrating radiation dose evaluator is specifically configured to:
obtaining radioactive substance information, parcel information, personnel information, vehicle information and path information from the radiation risk influence factor information;
evaluating according to the radioactive substance information, the package information, the personnel information, the vehicle information and the path information to obtain the penetrating radiation dose of the package vehicles, the quantity and the position layout of the personnel and the package, the length of the transportation path and the average speed of the vehicles of the i-th transportation section, wherein the i-th transportation section belongs to one section of the radioactive substance road,
and calculating the radiation dose caused by a small amount of nuclides diffused into the environment by an atmospheric diffusion method and by combining the radionuclide, weather and environment information to obtain the penetrating radiation dose of each worker in the ith transportation section, and summing the penetrating radiation doses of each worker to obtain a collective penetrating radiation dose.
3. The radioactive material road transportation path planning system according to claim 2, wherein the accident radiation dose evaluator is specifically configured to:
acquiring radioactive substance information, parcel information, personnel information, vehicle information, path information, weather information, environment information and accident influence information from the radiation risk influence factor information;
classifying accidents of radioactive substance road transportation by adopting a fault tree and event tree method according to radioactive substance information, package information, personnel information, vehicle information, weather information, environment information and accident influence information of the ith transportation section and combining the damage degree of a package in an accident and an accident handling mode to obtain the accident occurrence probability of various accidents of the ith transportation section, wherein the ith transportation section belongs to one section of the radioactive substance road;
calculating the release amount of radioactive substances according to the damage degree of a goods package in a potential accident and the accident handling timeliness of the i-th transportation section by adopting an atmospheric diffusion method and different emergency evacuation modes, respectively calculating the potential radiation dose of each worker and the public in the accident of the i-th transportation section by combining the number and position layout of the workers and the public, weather information and environmental information, and summing up the potential radiation dose of a worker collective and the potential radiation dose of a public collective.
4. The radioactive material road transportation path planning system according to claim 3, wherein the road segment dose evaluator is specifically configured to:
respectively endowing weight coefficients for the potential radiation dose of the staff collective and the potential radiation dose of the public collective in various accidents of the i-th transportation section, multiplying the weight coefficient corresponding to the potential radiation dose of the staff collective with the accident occurrence probability of the i-th transportation section to obtain the staff collective accident dose of the i-th transportation section, and multiplying the potential radiation dose of the public collective with the accident occurrence probability of the i-th transportation section to obtain the public collective accident dose of the i-th transportation section;
and respectively giving weight coefficients to the staff collective accident dose, the public collective accident dose and the collective penetrating radiation dose of the i-th transportation section, and adding the weight coefficients to form the collective weighted dose of the i-th transportation section.
5. The radioactive material road transportation path planning system according to claim 4, wherein the path planner is specifically configured to:
according to a topological method, combining each potential road section where a radioactive substance road runs from a transportation starting point to a transportation terminal point to generate a point diagram, and taking the road between two adjacent points as a section of transportation road section according to the point diagram so as to segment all the potential road section combinations;
and dynamically adjusting the sections of different transportation road sections according to the collective weighted dose of all the transportation road sections to obtain all transportation road section combinations from the transportation starting point to the transportation terminal point, respectively calculating the total-path collective weighted dose of the transportation road section combinations, comparing the total-path collective weighted doses corresponding to the transportation road section combinations, sequencing the transportation road section combinations according to the comparison result, and outputting the sequencing result of the road transportation risks in a list form.
6. A radioactive substance road transportation path planning method is characterized by comprising the following steps:
collecting radiation risk influence factor information of radioactive substance road transportation;
evaluating the collective penetrating radiation dose of radioactive substance road transportation under normal conditions according to the radiation risk influence factor information;
evaluating the accident occurrence probability of the radioactive substance road transportation according to the radiation risk influence factor information, and evaluating the potential radiation dose of the radioactive substance road transportation under the accident condition;
performing road section dose evaluation according to the collective penetrating radiation dose, the accident occurrence probability and the potential radiation dose to obtain a collective weighted dose;
and respectively calculating the collective weighted dose of each transportation section of the potential section combination according to the potential section combination and the collective weighted dose of the radioactive substance road transportation, sequencing according to the collective weighted dose of each transportation section, and finally outputting the sequencing result of the road transportation risk in a list form.
7. The method for planning a road transportation path for radioactive materials according to claim 6, wherein the step of evaluating the collective penetrating radiation dose of the radioactive materials in road transportation under normal conditions according to the radiation risk influencing factor information includes:
obtaining radioactive substance information, parcel information, personnel information, vehicle information and path information from the radiation risk influence factor information;
evaluating according to the radioactive substance information, the package information, the personnel information, the vehicle information and the path information to obtain the penetrating radiation dose of the package vehicles, the quantity and the position layout of the personnel and the package, the length of the transportation path and the average speed of the vehicles of the i-th transportation section, wherein the i-th transportation section belongs to one section of the radioactive substance road,
and calculating the radiation dose caused by a small amount of nuclides diffused into the environment by an atmospheric diffusion method and by combining the radionuclide, weather and environment information to obtain the penetrating radiation dose of each worker in the ith transportation section, and summing up the penetrating radiation doses of each worker to obtain a collective penetrating radiation dose.
8. The method for planning a road transportation path for radioactive materials according to claim 7, wherein the method for evaluating the accident occurrence probability of the road transportation for radioactive materials according to the radiation risk influencing factor information and evaluating the potential radiation dose of the road transportation for radioactive materials under the accident condition specifically comprises:
acquiring radioactive substance information, parcel information, personnel information, vehicle information, path information, weather information, environment information and accident influence information from the radiation risk influence factor information;
classifying accidents of radioactive substance road transportation by adopting a fault tree and event tree method according to radioactive substance information, package information, personnel information, vehicle information, weather information, environment information and accident influence information of the ith transportation section and combining the damage degree of a package in an accident and an accident handling mode to obtain the accident occurrence probability of various accidents of the ith transportation section, wherein the ith transportation section belongs to one section of the radioactive substance road;
calculating the release amount of radioactive substances according to the damage degree of a goods package in a potential accident and the accident handling timeliness of the i-th transportation section by adopting an atmospheric diffusion method and different emergency evacuation modes, respectively calculating the potential radiation dose of each worker and the public in the accident of the i-th transportation section by combining the number and position layout of the workers and the public, weather information and environmental information, and summing up the calculated collective potential radiation dose of the workers and the collective potential radiation dose of the public.
9. A radioactive material road transportation path planning system, comprising a memory, a processor and a computer program stored in the memory and operable on the processor, wherein the processor executes the computer program to implement the radioactive material road transportation path planning method according to any one of claims 6 to 8.
10. A computer-readable storage medium, which stores a computer program, wherein the computer program, when executed by a processor, implements the method for planning a road transportation path of radioactive materials according to any one of claims 6 to 8.
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| CN202211027402.1A CN115496436A (en) | 2022-08-25 | 2022-08-25 | Radioactive substance road transportation path planning system, method and storage medium |
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| CN202211027402.1A CN115496436A (en) | 2022-08-25 | 2022-08-25 | Radioactive substance road transportation path planning system, method and storage medium |
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