Passive flexible protective net scene suitability evaluation method based on interaction matrix

Abstract

The embodiment of the invention discloses a passive flexible protective net scene suitability evaluation method based on an interaction matrix. A passive flexible protective net scene suitability evaluation system can quantitatively evaluate whether a certain determined dangerous rock mass prevention and control project is suitable for adopting a passive flexible protective net or not. Establishing a passive flexible guard net scene suitability evaluation system based on the interaction relation matrix, selecting factors influencing the passive flexible guard net scene suitability to establish an evaluation index system, and performing quantitative value taking on evaluation indexes by adopting a relation matrix method. And the influence of the interaction of the evaluation indexes on the scene suitability of the passive flexible protection net is researched, and the weight of each evaluation index in the system is obtained, so that the scene suitability score calculation method of the passive flexible protection net can be obtained. The method aims at achieving quantitative evaluation on the engineering effectiveness of the passive flexible protective net, and reference is provided for engineering design and site selection of the passive flexible protective net.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of geological disaster prevention and control engineering, and specifically to a method for evaluating the scene adaptability of a passive flexible protection net based on an interaction matrix. Background Art

[0002] Earthquakes and their aftershocks can cause significant casualties and economic losses. The fundamental cause of these casualties and economic losses is earthquake-induced secondary geological hazards and damage to engineering structures caused by seismic activity. Studies have shown that geological hazards in mountainous areas show a significant increase in intensity for a long period after an earthquake, potentially lasting as long as 20 to 25 years. Consequently, years after an earthquake, a significant amount of unstable rock mass may still exist in certain areas. Unstable rock mass refers to rock masses on slopes with poor stability. Under the influence of aftershocks and subsequent external factors (such as heavy rainfall and engineering disturbances), they are highly likely to separate from the parent rock, triggering geological hazards such as rockfalls, collapses, landslides, and debris flows. The severity of the damage caused by unstable rock mass can sometimes far exceed that caused by seismic activity, both in terms of spatial scope and duration. This is especially true for slopes located near roads, residential buildings, and tourist attractions. Even small-scale instability and damage from unstable rock mass can pose a significant threat to people's livelihoods and production. Therefore, the protection of earthquake-induced unstable rock mass has long been a research priority in geotechnical engineering.

[0003] Due to the significant safety hazards posed by dangerous rock masses, effective management is crucial for the safe and effective management of unstable rock masses in earthquake-prone areas. Passive flexible protective nets, with their excellent rockfall protection and high cost-effectiveness, are widely used in disaster prevention projects involving landslides and rockfalls. Passive flexible protective nets are a protective system designed to intercept high-speed rockfalls and provide effective protection against rockfalls and collapses that can occur in dangerous rock masses.

[0004] Although passive flexible protection nets offer significant advantages in slope protection projects, the lack of a unified industry standard for their design has hindered their practical application. Currently, the design and selection of passive flexible protection nets still rely on empirical design and experimental verification, with design parameters determined based on test results. The European Standard for the Inspection of Flexible Protection Nets (ETAG-027) initially proposed some design recommendations for structural energy levels and external dimensions. my country's "Flexible Safety Interception Nets for Slopes Along Railways" specifies the component specifications and quantities for six types of passive flexible protection nets, but does not address specific component connection methods, design approaches, or applicable scenarios. These recommendations are often empirical and qualitative, with limited guidance for specific structural design. This has led to the ineffective application of passive flexible protection nets and their suboptimal effectiveness. In light of this, this paper proposes the concept of scenario adaptability for passive flexible protection nets, aiming to quantitatively evaluate the effectiveness of passive flexible protection net projects. The scene adaptability of the passive flexible protection net refers to an indicator that measures whether it can effectively realize the protection function if the passive flexible protection net is to be used as a protection form at a certain slope protection site. The higher the adaptability of the passive flexible protection net, the more suitable it is for the slope project to use the passive flexible protection net for engineering prevention and control. In order to quantitatively evaluate whether a certain dangerous rock mass prevention and control project is suitable for the use of a passive flexible protection net, the present invention establishes a scientific and reliable passive flexible protection net scene adaptability evaluation system, thereby achieving a quantitative evaluation of the effectiveness of the passive flexible protection net project and providing a reference for the engineering design and site selection of the passive flexible protection net. Summary of the Invention

[0005] To this end, an embodiment of the present invention provides a passive flexible protection net scene adaptability evaluation method based on an interaction matrix to solve the problem in the prior art that the effectiveness of the passive flexible protection net project cannot be quantitatively evaluated due to the shortcomings of the prior art.

[0006] In order to achieve the above objectives, the embodiments of the present invention provide the following technical solutions: A method for evaluating the scene adaptability of a passive flexible protective net based on an interaction matrix according to an embodiment of the present invention includes the following steps: S1: Select factors that affect the adaptability of passive flexible protection nets to different scenarios and establish an evaluation index system; The selected evaluation indicators are the rock mass structure and structural characteristics of the potential dangerous rock mass, the dispersion degree of the dangerous rock mass, the distance between the dangerous rock mass and the protected object, the width of the slope platform, the slope change characteristics, and the vegetation coverage of the slope; S2: Establish an interaction matrix of the evaluation indicators of the passive flexible protection net scenario adaptability, select the six basic indicators in the evaluation indicator system as the main diagonal elements, preliminarily establish a qualitative description of the relationship matrix between the evaluation indicators of the adaptability of the flexible protection net, analyze the impact of the interaction between the evaluation indicators on the adaptability of the protection net, and qualitatively describe the interaction relationship between the evaluation indicators; The interaction relationship matrix of the evaluation indicators of the passive flexible protection net scene adaptability is shown in Table 1; Table 1 Interaction relationship matrix of evaluation indicators of passive flexible protection net scene adaptability

[0007] S3: The expert-semi-quantitative method is used to assign values to 30 off-diagonal elements, and the interaction strength PH, parametric control PD, and activity coefficient are calculated. k i ; The assignment of the interaction matrix of the adaptability evaluation indexes of the passive flexible protection net is shown in Table 2; Table 2 Interaction matrix assignment of flexible protective net adaptability evaluation indicators

[0008] The interaction strength PH represents the influence of parameter interaction on the system, and the calculation formula is:

[0009] Parametric control PD indicates the importance of the parameter to the system, and the calculation formula is:

[0010] Activity Index ( k i ) represents the percentage of the sum of the causal values of each factor to the total causal value, and the calculation formula is:

[0011] Where, k i is the evaluation index weight, C i The interaction matrix i The sum of row values, E i The interaction matrix i The sum of the column values, I ij is the sum of all values in the interaction matrix; S4: Use the “expert-semi-quantitative valuation method” to value evaluation indicators at different levels and establish a 4-level evaluation indicator valuation standard; The evaluation index value standards specifically include: Level I represents "very suitable", Level II represents "relatively suitable", Level III represents "generally suitable", and Level IV represents "completely unsuitable"; The evaluation index values are shown in Tables 3 to 8; Table 3 Rock mass structure and structural classification standards

[0012] Table 4 Classification standard of dangerous rock dispersion degree

[0013] Table 5 Classification standards for the distance between dangerous rocks and protected objects

[0014] Table 6 Slope platform width classification index (less than 12° is called a platform)

[0015] Table 7 Slope change characteristics classification standard

[0016] Table 8 Slope vegetation cover classification standards

[0017] S5: According to the evaluation index grading standard, the evaluation index values of the passive flexible protection net scene adaptability are determined; The values of the passive flexible protection net scene adaptability evaluation index are shown in Table 9; Table 9 Evaluation index values for the adaptability of passive flexible protective nets to different scenarios

[0018] S6: Use the passive flexible protection net scene adaptability evaluation calculation method to calculate the scene adaptability of the passive flexible protection net; The calculation results of the weight coefficients of each evaluation index are as follows:

[0019] in, ; Furthermore, the calculation formula for evaluating the scenario adaptability of the passive flexible protection net is: Where, P i The value is determined according to Table 4-9. k i is the evaluation index weight, W It is a dimensionless value calculated based on multiple influencing factors and used to calculate the adaptability of the passive flexible protection net scene; According to the calculation results, the scenario adaptability of the passive flexible protection net can be divided into three levels: very adaptable, generally adaptable and very unsuitable, see Table 10.

[0020] Table 10 Passive flexible protective net scenario adaptability classification

[0021] The embodiments of the present invention have the following advantages: The passive flexible protection net scene adaptability evaluation system selects six factors that are highly representative and easy to judge on-site as evaluation indicators, namely, the rock mass structure and structural characteristics of the dangerous rock mass, the degree of dispersion of the dangerous rock mass, the distance between the dangerous rock mass and the protected object, the width of the slope platform, the slope gradient change characteristics, and the slope vegetation coverage. A passive flexible protection net scene adaptability evaluation system is constructed using the interaction relationship matrix method. The passive flexible protection net scene adaptability evaluation system has the advantages of being convenient and fast. The evaluation system serves as a preliminary judgment for the site selection of the protection net, making up for the problem that traditional methods cannot quantitatively evaluate the scene adaptability of the protection net. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0023] The structures, proportions, sizes, etc. illustrated in this specification are intended only to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall still fall within the scope of the technical contents disclosed herein.

[0024] Figure 1 Schematic diagram of the interaction relationship matrix principle: (a) interaction relationship diagram; (b) multi-factor interaction matrix; (c) multi-factor relationship matrix parameter point distribution diagram; (d) parameter interaction and controllability; Figure 2 The histogram of the interaction (PH) of evaluation indicators (a) and the histogram of the weight of evaluation indicators (b); Figure 3 This is the slope change characteristic of a typical landslide body in a certain place. DETAILED DESCRIPTION

[0025] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. Obviously, the embodiments described are only a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0026] Example: A method for evaluating the adaptability of passive flexible protection nets based on interaction matrix. The slope characteristics of dangerous rock mass distribution in a certain area are as follows: Figure 3 As shown, the specific steps include: S1: Select factors that affect the adaptability of passive flexible protection nets to different scenarios and establish an evaluation index system; Specifically: the selected evaluation indicators are the rock mass structure and structural characteristics of the potential dangerous rock mass, the dispersion degree of the dangerous rock mass, the distance between the dangerous rock mass and the protected object, the width of the slope platform, the slope change characteristics, and the vegetation coverage of the slope; S2: Establish an interaction matrix of the evaluation indicators of the passive flexible protection net scenario adaptability, select the six basic indicators in the evaluation indicator system as the main diagonal elements, preliminarily establish a qualitative description of the relationship matrix between the evaluation indicators of the adaptability of the flexible protection net, analyze the impact of the interaction between the evaluation indicators on the adaptability of the protection net, and qualitatively describe the interaction relationship between the evaluation indicators; Specifically: The interaction relationship matrix of the evaluation indicators of the passive flexible protection net scene adaptability is shown in Table 1; S3: The expert-semi-quantitative method is used to assign values to 30 off-diagonal elements, and the interaction strength PH, parametric control PD, and activity coefficient are calculated. k i ; Specifically: interaction strength PH and parameter control PD are shown in Table 2. The calculation results of the weight coefficients of each evaluation index are:

[0027] in, ; S4: Use the “expert-semi-quantitative valuation method” to value evaluation indicators at different levels and establish a 4-level evaluation indicator valuation standard; Specifically: Based on the actual on-site investigation of dangerous rock masses, quantitatively evaluate the various factors affecting the scenario adaptability of the passive flexible protection net. The evaluation grading standards are shown in Table 3-8. S5: According to the evaluation index grading standard, the evaluation index values of the passive flexible protection net scene adaptability are determined; Specifically: The qualitative characteristics of the adaptability assessment of the passive flexible protection net for dangerous rock mass in a certain area are shown in Table 11; Table 11 Qualitative characteristics of adaptability assessment of passive flexible protection net for dangerous rock mass at a certain location

[0028]

[0029] S6: Use the passive flexible protection net scene adaptability evaluation calculation method to calculate the scene adaptability of the passive flexible protection net; Specifically: The calculation formula for evaluating the adaptability of passive flexible protective net scenarios is:

[0030] Where, P i The value is determined according to Table 4-9. k i is the evaluation index weight, W It is a dimensionless value calculated based on multiple influencing factors and used to calculate the adaptability of the passive flexible protection net scene; According to the calculation formula for the scenario adaptability evaluation of the passive flexible protection net, the scenario adaptability evaluation calculation table of the passive flexible protection net for dangerous rock mass in a certain area is shown in Table 12; Table 12 Scenario adaptability evaluation calculation table of passive flexible protection net for dangerous rock mass in a certain place

[0031] Furthermore, the passive flexible protection net scenario adaptability score table of a certain dangerous rock mass was analyzed. The results show that: (1) Among the 11 typical dangerous rock masses, 3# and 7# are not suitable for engineering prevention and control with passive flexible protection nets. 1#, 2#, 4#, 5#, 6#, 8# and 10# can be considered for engineering prevention and control with passive flexible protection nets. 9# and 11# are very suitable for engineering prevention and control with passive flexible protection nets. (2) The 11 collapse bodies are at similar heights and have large collapse energy. However, the slope of the lower part of the slope in area III (9# and 10#) is relatively small, and the distance of the gentle slope is long enough. During the movement, the energy of the dangerous rock mass is gradually consumed. Therefore, the potential collapse body moves to the passive protection net at a low speed and with limited energy. It will not bounce over the passive net or break through the passive net. The passive net is sufficient to intercept the possible collapse blocks. Therefore, the passive flexible protection net in this area has the highest degree of scene adaptability; (3) For the dangerous rock mass in this area, even though 3# and 7# are not suitable for engineering prevention and control based on the passive flexible protection net scene adaptability assessment system, their scores are close to "generally adaptable". Therefore, from the perspective of convenient construction, it is a more feasible solution to uniformly adopt passive flexible protection nets for engineering prevention and control.

[0032] In view of the characteristics of the dangerous rock mass and the characteristics of the prevention and control stage, a passive protection net is set up during the rescue and disaster relief stage. The location of the passive flexible protection net is shown in Figure 3An investigation into the effectiveness of the protective netting project revealed that since its implementation, the passive protective netting has intercepted numerous collapses, dangerous rock masses, and trees, essentially achieving its protective purpose. This is generally consistent with the conclusions drawn from the passive flexible protective net scenario adaptability assessment system proposed in this paper.

[0033] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made thereto. Therefore, such modifications and improvements, without departing from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A method for evaluating the scene adaptability of a passive flexible protective net based on an interaction matrix, characterized by The specific steps are: S1: Select factors that affect the adaptability of passive flexible protection nets to different scenarios and establish an evaluation index system; S2: Establish an interaction matrix of the evaluation indicators of the passive flexible protection net scenario adaptability, select the six basic indicators in the evaluation indicator system as the main diagonal elements, preliminarily establish a qualitative description of the relationship matrix between the evaluation indicators of the adaptability of the flexible protection net, analyze the impact of the interaction between the evaluation indicators on the adaptability of the protection net, and qualitatively describe the interaction relationship between the evaluation indicators; S3: The expert-semi-quantitative method is used to assign values to 30 off-diagonal elements, and the interaction strength PH, parametric control PD, and activity coefficient are calculated. k i ; S4: Use the "expert-semi-quantitative valuation method" to value evaluation indicators at different levels and establish a 4-level evaluation indicator valuation standard; S5: According to the evaluation index grading standard, the evaluation index values of the passive flexible protection net scene adaptability are determined; S6: Use the passive flexible protection net scene adaptability evaluation calculation method to calculate the scene adaptability of the passive flexible protection net.

2. The method for evaluating the scene adaptability of a passive flexible protective net based on an interaction matrix according to claim 1, characterized in that: The factors that affect the adaptability of the passive flexible protection net to the scene are selected to establish an evaluation index system, including: the rock mass structure and structural characteristics of the potential dangerous rock mass, the dispersion degree of the dangerous rock mass, the distance between the dangerous rock mass and the protected object, the width of the slope platform, the slope change characteristics, and the vegetation coverage of the slope; The six basic indicators in the evaluation index system are selected as the main diagonal elements, including: F1 - rock structure and structural characteristics of dangerous rock mass, F2 - dispersion degree of dangerous rock mass, F3 - distance between dangerous rock mass and protected object, F4 - width of slope platform, F5 - slope change characteristics, and F6 - vegetation coverage.

3. The method for evaluating the scene adaptability of a passive flexible protective net based on an interaction matrix according to claim 1, characterized in that: Calculate interaction strength PH, parametric control PD, activity coefficient k i , characterized in that the calculation formula of the interaction strength PH is: ； The calculation formula of the parametric control PD is: ； The activity coefficient k i The calculation formula is: ； Where, k i is the evaluation index weight, C i The interaction matrix i The sum of row values, E i The interaction matrix i The sum of the column values, I ij is the sum of all values in the interaction matrix.

4. The method for evaluating the scene adaptability of a passive flexible protective net based on an interaction matrix according to claim 1, characterized in that: The passive flexible protection net scene adaptability evaluation calculation method is characterized in that the calculation formula for the passive flexible protection net scene adaptability is: ； Where, P i In order to determine the value according to the evaluation index classification, k i is the evaluation index weight, W It is a dimensionless value obtained based on multiple influencing factors and used to calculate the adaptability of passive flexible protective net scenarios.

5. The method for evaluating the scene adaptability of a passive flexible protective net based on an interaction matrix according to claim 1, characterized in that: The passive flexible protection net scene adaptability evaluation index interaction relationship matrix specifically includes: The interaction relationship between F1 and F2, F3, F4, F5, and F6 is as follows: the effect of F1 on F2 can be qualitatively described as follows: the more broken the rock mass structure, the more dispersed the dangerous rock mass is generally; the effect of F1 on F6 can be qualitatively described as follows: the higher the degree of weathering, the more likely the vegetation cover is; the effect of F1 on F2, F3, F4, and F5 can be qualitatively described as follows: no effect; The interaction relationship between F2 and F1, F3, F4, F5, and F6 is as follows: the effect of F2 on F1, F3, and F6 can be qualitatively described as: there is a certain relationship; the effect of F2 on F4 and F5 can be qualitatively described as: no effect; The interaction relationship between F3 and F1, F2, F4, F5, and F6 is as follows: the effect of F3 on F1 can be qualitatively described as: the farther the distance, the more broken the rock mass may be; the effect of F3 on F6 can be qualitatively described as: the farther the distance, the more vegetation there is; the higher the degree of weathering, the more vegetation cover there may be; the effect of F3 on F2, F4, and F5 can be qualitatively described as: no effect; The interaction relationship between F4 and F1, F2, F3, F5, and F6 is as follows: the influence of F4 on F1 can be qualitatively described as: the rock mass on the slope with gentle terrain is relatively broken; the influence of F4 on F2 can be qualitatively described as: the wider the platform width, the more dispersed the dangerous rock mass is; the influence of F4 on F3 can be qualitatively described as: the platform is generally farther away; the influence of F4 on F5 and F6 can be qualitatively described as: a certain relationship; The interaction relationship between F5 and F1, F2, F3, F4, and F6 is as follows: the influence of F5 on F1 can be qualitatively described as: the rock mass of the slope with steep terrain is relatively intact; the influence of F5 on F2 can be qualitatively described as: easy accumulation due to slope changes; the influence of F5 on F3 can be qualitatively described as: the terrain with undulating slopes is generally far away; the influence of F5 on F4 can be qualitatively described as: a certain relationship; the influence of F5 on F6 can be qualitatively described as: no influence; The interaction relationship between F6 and F1, F2, F3, F4, and F5 is as follows: the impact of F6 on F1 can be qualitatively described as: rock masses with more vegetation coverage are generally more broken; the impact of F6 on F2 can be qualitatively described as: the more vegetation on the slope, the more dispersed it is (vegetation changes the movement trajectory of dangerous rock masses); the impact of F6 on F3 can be qualitatively described as: places where slope vegetation develops are generally far away; the impact of F6 on F4 can be qualitatively described as: a certain relationship; the impact of F6 on F5 can be qualitatively described as: no impact.

6. The method for evaluating the scene adaptability of a passive flexible protective net based on an interaction matrix according to claim 1, characterized in that: The assignment of the interaction matrix of the adaptability evaluation index of the passive flexible protective net specifically includes: no influence is assigned a value of 0; a certain relationship is assigned a value of 1; a weak correlation is assigned a value of 2; a medium correlation is assigned a value of 3; and a strong correlation is assigned a value of 4.

7. The method for evaluating the scene adaptability of a passive flexible protective net based on an interaction matrix according to claim 1, characterized in that: The evaluation indexes of passive flexible protective net scene adaptability are determined based on the expert-semi-quantitative method, including: F1 - Rock mass structure and structural classification standards: Grade I: Fragmented, loose, strongly to moderately weathered structures are extremely prone to landslide failure; Grade II: Sub-block and mosaic structures have multiple sets of structural planes. Under the action of gravity and weathering in the later stage, tensile cracks are likely to expand or even penetrate, causing the rock mass to loosen and slide rapidly away from the parent body; Grade III: Monolithic, blocky structures are prone to falling and toppling failure. However, due to their generally large size and high collapse energy level, they are more suitable for passive protection measures with higher protection energy levels or active protection measures for engineering prevention and control; Grade IV: Soil or strongly weathered soil-like slopes, as well as blocky soil slopes where the collapse of large isolated boulders on the slope may cause the shallow surface of the slope behind to become unstable and fail, further leading to the collapse of other isolated boulders. Therefore, active protection systems that avoid damage at the source are suitable; F2-Classification standard for the degree of dispersion of dangerous rocks: Level I: Rocks that collapsed earlier are deposited on the slope. These isolated rock piles remain on the slope and are widely distributed on the slope and are extremely unstable. If this type of dangerous rock mass is reinforced with an active system, the entire slope must be covered, which is economically undesirable; Level II: Rock masses with a wider distribution range but a certain degree of integration with the slope, or rock masses with large cracks on the rear edge. This type of rock mass has been in a critical unstable state for a long time and is affected by later inducing factors, especially the softening or erosion of the base by rainwater infiltration, which reduces the friction and integration with the slope, making it particularly prone to instability and damage; Level III: Rock masses with a relatively concentrated distribution and huge volume. Due to the high collapse energy level of this type of rock mass, it may exceed the protection energy level range of the passive protection net; Level IV: Isolated and huge rock masses, the safety and economic benefits of taking active protection measures are better than those of passive protection nets; F3- Classification standard for the distance between dangerous rocks and protected objects: Class I: slopes with a height greater than 20m; Class II: low slopes with a distance between dangerous rocks and protected objects less than 20m; F4- Slope platform width classification index: Level I: Slope with platform; Level II: Slope without platform; F5 - Slope change characteristics classification standard: Level I: Slope topography changes from steep to gentle; Level II: No slope change, slope less than 45°, dangerous rocks mostly move by rolling, and the jumping height generally meets the requirements of the protection system; Level III: No slope change, but steeper, greater than 63° or negative terrain, dangerous rocks most likely move by jumping or free falling, in which case the kinetic energy of the dangerous rocks is high, or the jumping height exceeds the height of the protection net; Level IV: Slope topography changes from gentle to steep; F6 - Slope Vegetation Cover Classification Standards: Level I: Large shrubs and trees are present to reduce the kinetic energy of dangerous rocks. The required protection level is not as high. Furthermore, for environmental reasons, felling of these shrubs and trees is generally restricted. Flexible protection nets have been fine-tuned for terrain adaptability, making them more adaptable to complex and changing terrain. Trees encountered during construction can be avoided without impacting the ecosystem. The entire project can be effectively shaded by greenery, minimizing damage to the landscape. Level II: Low shrubs and weeds are present on the slope, reducing the kinetic energy of dangerous rocks. Level III: Exposed bedrock with no significant kinetic energy reduction.

8. The method for evaluating the scene adaptability of a passive flexible protective net based on an interaction matrix according to claim 1, characterized in that: The specific steps for selecting the values of the passive flexible protective net scene adaptability evaluation index are as follows: Level I takes the value of 3, Level II takes the value of 2, Level III takes the value of 1, and Level IV takes the value of 0.

9. The method for evaluating the scene adaptability of a passive flexible protective net based on an interaction matrix according to claim 1, characterized in that: Passive flexible protective net scene adaptability classification, including: The passive flexible protection net scene adaptability score is greater than or equal to 250 points, the scene adaptability classification is Level I, and the scene adaptability evaluation is: very adaptable; The passive flexible protection net scene adaptability score is greater than or equal to 150 points and less than 250 points, the scene adaptability classification is Level II, and the scene adaptability evaluation is: general adaptability; The scene adaptability score of the passive flexible protective net is greater than 150 points, the scene adaptability classification is Level III, and the scene adaptability evaluation is: very unsuitable.

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