CN115310767A - Comprehensive detection and evaluation method for old railway shielding facilities - Google Patents
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Abstract
The invention discloses a comprehensive detection and evaluation method for old railway shielding facilities, which comprises the following steps: detecting a guard facility structure and a guard facility occurrence environment and obtaining corresponding risk occurrence probability grades, wherein the probability grades comprise frequent occurrence, possible occurrence, accidental occurrence, rare occurrence and extremely unlikely occurrence; judging the driving condition of the existing line and obtaining corresponding risk occurrence consequence levels, wherein the consequence levels comprise catastrophic, serious, larger and slight; comprehensively evaluating the occurrence probability and the consequence grade to obtain an overall risk grade; according to the invention, the structure of the shielding facility and the geological conditions of the shielding facility are evaluated to obtain the risk occurrence probability grade and the driving condition is evaluated to obtain the risk occurrence consequence grade, the comprehensive grading of the structure of the shielding facility and the geological conditions of the shielding facility ensures the scientificity and comprehensiveness of the evaluation of the risk grade of the existing old railway shielding facility, and the evaluation accuracy is improved.
Description
Technical Field
The invention relates to the technical field of existing line maintenance, in particular to a comprehensive detection and evaluation method for old railway blocking and protecting facilities.
Background
Retaining wall revetment is an important facility of railway roadbed. Under the action of natural and human factors, most retaining wall revetments are destroyed and collapsed after a period of operation, so that huge economic loss is caused, and meanwhile, the potential hidden danger of diseases of the retaining wall revetments threatens the safety of railways in future. For this reason, it is necessary to periodically evaluate the risk level of an existing line guard and to make a targeted safeguard.
At present, the risk level assessment of the existing retaining and protecting facilities only depends on the assessment of the structural integrity of the retaining wall and the slope protection, for example, a site investigation data and an indoor model test are disclosed in the existing line grouted rubble retaining and protecting engineering safety assessment and reinforcement technology research written by Zhang Xiu by authors, and risk factors influencing the safety and quality of the existing line grouted rubble retaining and protecting engineering are combed out; secondly, determining a safety evaluation unit of the grouted rubble gravity retaining wall by combining risk evaluation with retaining wall stability analysis, and providing a comprehensive safety level concept from the qualitative and quantitative combination angles by referring to relevant specifications. However, the whole evaluation process is only the evaluation of the guard structure, and other factors are not involved in the evaluation, so that the evaluation result has great limitation, and the problem of inaccuracy of the evaluation result is easily caused.
In order to solve the problems, the invention provides a comprehensive detection and evaluation method for old railway shielding facilities, which solves the problem that the existing old railway shielding facilities are inaccurate and incomplete in risk evaluation.
Disclosure of Invention
The invention aims to provide a comprehensive detection and evaluation method for old railway shielding facilities, and the purpose of improving the accuracy of risk level evaluation of the old railway shielding facilities is achieved.
In order to achieve the purpose, the invention provides the following scheme:
a comprehensive detection and evaluation method for old railway shielding facilities comprises the following steps:
detecting a guard facility structure and an occurrence environment of the guard facility and obtaining corresponding risk occurrence probability levels, wherein the probability levels comprise frequent occurrence, possible occurrence, accidental occurrence, rare occurrence and extremely unlikely occurrence;
judging the driving condition of the existing line and obtaining corresponding risk occurrence consequence levels, wherein the consequence levels comprise catastrophic, serious, large and slight;
comprehensively evaluating the occurrence probability and the consequence grade to obtain an overall risk grade;
when the occurrence grade is frequently occurring, the consequence grade is catastrophic or severe, the overall risk grade is judged to be extremely high, when the consequence grade is larger, the overall risk grade is judged to be high, and when the consequence grade is slight, the overall risk grade is judged to be moderate;
when the occurrence level is possible, the consequence level is catastrophic or severe, the overall risk level is judged to be extremely high, when the consequence level is severe or large, the overall risk level is judged to be high, and when the consequence level is slight, the overall risk level is judged to be moderate;
when the occurrence grade is accidental occurrence and the consequence grade is catastrophic, the overall risk grade is judged to be extremely high, when the consequence grade is serious or serious, the overall risk grade is judged to be high, and when the consequence grade is larger or slight, the overall risk grade is judged to be moderate;
when the occurrence level is infrequent, the consequence level is catastrophic or severe, the overall risk level is judged to be high, when the consequence level is severe or greater, the overall risk level is judged to be medium, when the consequence level is mild, the overall risk level is judged to be low;
when the occurrence level is highly unlikely, the consequence level is catastrophic or severe, the overall risk level is determined to be moderate, and when the consequence level is greater or mild, the overall risk level is determined to be low.
Preferably, the detection method of the guard facilities and the existing environment is as follows: the detection is carried out by a method combining field survey, unmanned aerial vehicle remote sensing and nondestructive detection.
Preferably, the evaluation indexes of the retaining and protecting facilities comprise the type of the retaining wall, the thickness of the wall body, the voidage, the mortar plumpness, whether cracks appear or not, inclination, dislocation of expansion joints, sliding, sinking, surface weathering, no communication of drain holes, accumulated water behind the wall, whether slide slope, collapse, dislocation, deep rock creeping on the top slope of the retaining wall, the ground scale, whether the drainage facilities are complete or not, whether the masonry quality of the retaining wall such as the dust seam width, the through seam, blind seam, dislocation, the inscribed circle diameter of the gap at the joint of three pieces of stones and the like meets the requirements or not; the evaluation indexes of the occurrence environment comprise slope scale, geological environment, hydrological condition, induction factors and engineering measures.
Preferably, the evaluation method of the risk occurrence probability level is as follows:
sorting the evaluation indexes according to the order of importance from high to low, and determining a weight coefficient gamma by adopting an importance sorting method ij ，
In the formula, gamma ij A weight coefficient for the ith evaluation index;
n is the number of evaluation index items;
m is an importance ranking number, and m is less than or equal to n;
according to the index score and the weight coefficient, calculating and determining the risk occurrence probability score according to the following formula,
P＝∑R ij γ ij
wherein P is a risk score;
R ij is the score of the evaluation index.
Preferably, when the risk score is equal to or greater than 60, the probability level is described as frequently occurring, the probability level is 5, when the risk score is equal to or greater than 45 and less than 60, the probability level is described as likely to occur, the probability level is 4, when the risk score is equal to or greater than 30 and less than 45, the probability level is described as accidental occurrence, the probability level is 3, when the risk score is equal to or greater than 15 and less than 30, the probability level is described as rarely occurring, the probability level is 2, and when the risk score is less than 15, the probability level is described as very unlikely to occur, and the probability level is 1.
Preferably, the aassessment index of driving condition includes that railway facilities holds disaster body characteristic, driving safety influence and the difficult and easy degree of speedily carrying out rescue work, hold disaster body characteristic and include upper track probability and collapse volume, driving safety influence includes driving speed, driving logarithm, driving type and driving environment, the difficult and easy degree of speedily carrying out rescue work includes that station is prepared materials the distance, is speedily carried the distance and is dug quick-witted, the large-scale mechanical condition of entering the field of forklift truck to speedily carrying out rescue work material.
Preferably, the consequence score is calculated as follows:
C＝∑S i γ i
wherein C is the consequence score, S i Score, y, for each evaluation index i Are weight coefficients.
Preferably, the consequence level is described as catastrophic when the consequence score is equal to or greater than 60, the probability level is 5, the consequence level is described as severe when the consequence score is equal to or greater than 45 and less than 60, the probability level is 4, the consequence level is described as severe when the consequence score is equal to or greater than 30 and less than 45, the probability level is 3, the consequence level is described as greater when the consequence score is equal to or greater than 15 and less than 30, the probability level is 2, and the consequence level is described as mild when the consequence score is less than 15, the probability level is 1.
Preferably, when the overall risk level is extremely high, the acceptance criterion is unacceptable, and the control strategy is to adopt special treatment measures to reduce the risk level and carry out disaster risk monitoring and early warning;
when the total risk level is high, the receiving criterion is not expected, and the control strategy is to adopt reinforcement and remediation to monitor the disaster risk;
when the overall risk level is moderate, the acceptance criterion is acceptable, the control strategy is to strengthen the field inspection tour and carry out disaster risk monitoring;
and when the total risk level is low, the acceptance criterion is acceptance, the control strategy is operation maintenance, and no special risk control measure is needed.
Preferably, the monitoring and early warning includes tracking and monitoring the deformation and damage process of the geological disaster point, and judging and analyzing the stable state and the variation trend of the geological disaster point.
Compared with the prior art, the invention achieves the following technical effects:
1. according to the invention, the structure of the shielding facility and the geological conditions of the shielding facility are evaluated to obtain the risk occurrence probability grade and the driving condition is evaluated to obtain the risk occurrence consequence grade, the comprehensive grading of the structure of the shielding facility and the geological conditions of the shielding facility ensures the scientificity and comprehensiveness of the evaluation of the risk grade of the existing old railway shielding facility, and the evaluation accuracy is improved.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a comprehensive detection and evaluation method for old railway shielding facilities, and the purpose of improving the accuracy of risk level evaluation of the old railway shielding facilities is achieved.
The present invention will be described in further detail so that the above objects, features and advantages of the present invention can be more clearly understood.
A comprehensive detection and evaluation method for existing railway old retaining and protecting facilities comprises the following steps: detecting the structure and the occurrence environment of the shielding facility and obtaining corresponding risk occurrence probability grades, wherein the probability grades comprise frequent occurrence, possible occurrence, accidental occurrence, rare occurrence and extremely impossible occurrence; judging the driving condition of the existing line and obtaining corresponding risk occurrence consequence levels, wherein the consequence levels comprise catastrophic, serious, larger and slight; comprehensively evaluating the occurrence probability and the consequence grade to obtain an overall risk grade;
when the occurrence grade is frequently occurring, and the consequence grade is catastrophic or serious, the overall risk grade is judged to be extremely high, when the consequence grade is larger, the overall risk grade is judged to be high, and when the consequence grade is slight, the overall risk grade is judged to be moderate;
when the occurrence grade is possible, and the consequence grade is catastrophic or serious, the overall risk grade is judged to be extremely high, when the consequence grade is serious or large, the overall risk grade is judged to be high, and when the consequence grade is slight, the overall risk grade is judged to be moderate;
when the occurrence grade is accidental and the consequence grade is catastrophic, the overall risk grade is judged to be extremely high, when the consequence grade is serious or serious, the overall risk grade is judged to be high, and when the consequence grade is large or slight, the overall risk grade is judged to be moderate;
when the occurrence grade is seldom occurrence, the consequence grade is disastrous or serious, the overall risk grade is judged to be high, when the consequence grade is serious or large, the overall risk grade is judged to be medium, and when the consequence grade is slight, the overall risk grade is judged to be low;
when the occurrence grade is extremely unlikely to occur, and the consequence grade is catastrophic, serious or serious, the overall risk grade is judged to be moderate, and when the consequence grade is greater or slight, the overall risk grade is judged to be low; according to the method, the structure of the retaining and protecting facility and the geological condition of the retaining and protecting facility are evaluated to obtain the risk occurrence probability grade and the driving condition is evaluated to obtain the risk occurrence consequence grade, the comprehensive grading of the risk occurrence probability grade and the driving condition ensures the scientificity and comprehensiveness of the evaluation of the risk grade of the existing old railway retaining and protecting facility, and the evaluation accuracy is improved.
Further, the detection method of the protective facilities and the occurrence environment comprises the following steps: the detection is carried out by a method combining field survey, unmanned aerial vehicle remote sensing and nondestructive detection.
Furthermore, the assessment indexes of the retaining and protecting facilities comprise the type of the retaining wall, the thickness of the wall body, the voidage, the mortar plumpness, whether cracks appear or not, inclination, slippage of an expansion joint, sliding, sinking, surface weathering, no communication of a drain hole, accumulated water behind the wall, whether landslide, collapse, dislocation, deep rock creeping appear on the top slope of the retaining wall, whether the ground scale and the drainage facility are complete or not, whether the masonry quality such as the dust seam width, the through seam, blind seam, dislocation of the retaining wall, the inscribed circle diameter of the gap at the joint of three pieces of stones and the like meets the requirements or not; the evaluation indexes of the occurrence environment comprise slope scale, geological environment, hydrological conditions, induction factors and engineering measures.
Further, the evaluation method of the risk occurrence probability level is as follows:
ranking the evaluation indexes from high to low according to importance, and determining the weight coefficient gamma by using an importance ranking method ij ，
In the formula, gamma ij A weight coefficient for the ith evaluation index;
n is the number of evaluation index items;
m is an importance ranking number, and m is less than or equal to n;
according to the index score and the weight coefficient, calculating and determining the risk occurrence probability score according to the following formula,
P＝∑R ij γ ij
in the formula: p is the risk score;
R ij to evaluate the score of the index.
Referring to table 1, when the risk score is 60 or more, the probability level is described as frequent occurrence, the probability level is 5, when the risk score is 45 or more and less than 60, the probability level is described as possible occurrence, the probability level is 4, when the risk score is 30 or more and less than 45, the probability level is described as accidental occurrence, the probability level is 3, when the risk score is 15 or more and less than 30, the probability level is described as rare occurrence, the probability level is 2, when the risk score is less than 15, the probability level is described as very unlikely occurrence, and the probability level is 1.
TABLE 1
| Risk score P | Description of probability classes | Probability level |
| P≥60 | Frequently occur | 5 |
| 45≤P＜60 | May happen | 4 |
| 30≤P＜45 | Happened by accident | 3 |
| 15≤P＜30 | Is rarely generated | 2 |
| P＜15 | Is very unlikely to occur | 1 |
Referring to table 2, the evaluation indexes of the driving conditions include the characteristics of a disaster-bearing body of the railway facility, driving safety influence and difficulty level of emergency rescue, the characteristics of the disaster-bearing body include the upper track probability and the collapse volume, the driving safety influence includes the driving speed, the driving logarithm, the driving type and the driving environment, and the difficulty level of emergency rescue includes the station material preparation distance, the emergency material manual carrying distance and the large-scale mechanical approach condition of the excavator and the forklift; the consequence score is calculated as follows:
C＝∑S i γ i
wherein C is the consequence score, S i Score, y, for each evaluation index i Are weight coefficients.
TABLE 2
Referring to table 3, when the consequence score is equal to or greater than 60, the consequence grade is described as catastrophic, the probability grade is 5, when the consequence score is equal to or greater than 45 and less than 60, the consequence grade is described as severe, the probability grade is 4, when the consequence score is equal to or greater than 30 and less than 45, the consequence grade is described as severe, the probability grade is 3, when the consequence score is equal to or greater than 15 and less than 30, the consequence grade is described as large, the probability grade is 2, when the consequence score is less than 15, the consequence grade is described as mild, and the probability grade is 1.
TABLE 3
Further, when the overall risk level is extremely high, the receiving criterion is unacceptable, and the control strategy is to adopt special treatment measures to reduce the risk level and carry out disaster risk monitoring and early warning;
when the overall risk level is high, the receiving criterion is not expected, and the control strategy is to adopt reinforcement and remediation to monitor the disaster risk;
when the overall risk level is moderate, the acceptance criterion is acceptable, the control strategy is to strengthen the field inspection and carry out disaster risk monitoring;
when the overall risk level is low, the receiving criterion is receiving, the control strategy is operation maintenance, and no special risk control measure is needed.
Furthermore, the monitoring and early warning comprises tracking and monitoring the deformation and damage process of the geological disaster point, and judging and analyzing the stable state and the variation trend of the geological disaster point.
Referring to table 4, the overall risk rating is determined as follows.
TABLE 4
The railway main line protecting facility in Guangxi area is taken as an example for explanation:
detecting the structure of the shielding facility and the occurrence environment of the shielding facility and obtaining the corresponding risk occurrence probability grade:
wherein the side slope scale comprises a mountain height, a protection height and a protection slope rate; the geological conditions comprise geological lithology and broken body structures, and the hydrological conditions comprise underground water and surface water; the induction factors comprise the rainfall matching degree, the external environment, the special phenomena of frost heaving and spring thawing and the like, disease division, the suitability of engineering measures and the drainage engineering state.
Refer to table 5.
As follows
Shown in the figure:
TABLE 5
TABLE 6
P r1 ＝100-(20*4+25*1+20*1+20*2+15*2)/5＝100-195/5＝57
Because 60>P r1 The grade of the technical condition of the revetment is three grades (worse) because the grade is more than or equal to 40.
From table 5, n =13, according to the formula:
table 7 can be obtained as follows:
TABLE 7
| Importance number | γ ij |
| 1 | 0.147929 |
| 2 | 0.136095 |
| 3 | 0.12426 |
| 4 | 0.112426 |
| 5 | 0.100592 |
| 6 | 0.088757 |
| 7 | 0.076923 |
| 8 | 0.065089 |
| 9 | 0.053254 |
| 10 | 0.04142 |
| 11 | 0.029586 |
| 12 | 0.017751 |
| 13 | 0.005917 |
According to the formula P = ∑ R ij γ ij ，
It was found that the value of P was 61.4,
thus P r2 ＝5
According to the formula: p = [ w) 1 *P r1 +w2*P r2 ]＝[40％*3+60％*5]＝4
According to the table 1, the risk occurrence probability is 4 grades, namely the risk occurrence probability is possible;
judging the driving condition of the existing line and obtaining the corresponding risk occurrence consequence grade:
wherein the evaluation index includes: the system comprises the following components of a lane climbing probability, a lane climbing volume, a traveling speed, a traveling number, a traveling type, a traveling environment, a station stock preparation distance, a rescue material manual carrying distance and a large-scale mechanical process condition. Refer to table 8.
As follows
Shown in the figure:
TABLE 8
According to the formula C = ∑ S i γ i C =65.395 was calculated;
a risk outcome level of 5, the outcome level being described as catastrophic, is derived from table 3;
the overall risk level was assessed as extremely high according to table 4.
The adaptation according to the actual needs is within the scope of the invention.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (10)
1. A comprehensive detection and evaluation method for existing railway old gear and protection facilities is characterized by comprising the following steps:
detecting a protection facility structure and a protection facility occurrence environment and obtaining corresponding risk occurrence probability levels, wherein the probability levels comprise frequent occurrence, possible occurrence, accidental occurrence, rare occurrence and extremely unlikely occurrence;
judging the driving condition of the existing line and obtaining corresponding risk occurrence consequence levels, wherein the consequence levels comprise catastrophic, serious, large and slight;
comprehensively evaluating the occurrence probability and the consequence grade to obtain an overall risk grade;
when the occurrence grade is frequently occurring, and the consequence grade is catastrophic, severe or severe, the overall risk grade is judged to be extremely high, when the consequence grade is larger, the overall risk grade is judged to be high, and when the consequence grade is slight, the overall risk grade is judged to be moderate;
when the occurrence level is possible, the consequence level is catastrophic or severe, the overall risk level is judged to be extremely high, when the consequence level is severe or large, the overall risk level is judged to be high, and when the consequence level is slight, the overall risk level is judged to be moderate;
when the occurrence grade is accidental occurrence and the consequence grade is catastrophic, the overall risk grade is judged to be extremely high, when the consequence grade is serious or serious, the overall risk grade is judged to be high, and when the consequence grade is larger or slight, the overall risk grade is judged to be moderate;
when the occurrence level is infrequent, the outcome level is catastrophic or severe, the overall risk level is judged high, when the outcome level is severe or greater, the overall risk level is judged medium, when the outcome level is mild, the overall risk level is judged low;
when the occurrence level is highly unlikely, the consequence level is catastrophic or severe, the overall risk level is determined to be moderate, and when the consequence level is greater or mild, the overall risk level is determined to be low.
2. The comprehensive detection and evaluation method for old retaining and protecting facilities of the existing railway according to claim 1, wherein the detection method for the retaining and protecting facilities and the occurrence environment is as follows: the detection is carried out by a method combining field survey, unmanned aerial vehicle remote sensing and nondestructive detection.
3. The comprehensive detection and evaluation method for old retaining and protecting facilities of the existing railway according to claim 2, wherein the evaluation indexes of the retaining and protecting facilities comprise the type of the retaining wall, the thickness of the wall body, the voidage, the mortar fullness, whether cracks, inclination, slippage of expansion joints, sliding, sinking, surface weathering, no drainage holes, accumulated water behind the wall, whether landslides, collapse, dislocation, deep rock creeping, the ground scale, whether the drainage facilities are complete, whether the masonry quality such as the width of dust seams of the retaining wall, through seams, blind seams, staggered seams, the inscribed circle diameter of the gaps at the joints of three rubbles meets the requirements; the evaluation indexes of the occurrence environment comprise slope scale, geological environment, hydrological condition, induction factors and engineering measures.
4. The comprehensive detection and evaluation method for the old protection and protection facilities of the existing railway according to claim 3, wherein the evaluation method for the risk occurrence probability level is as follows:
ranking the evaluation indexes from high to low according to importance, and determining the weight coefficient by using an importance ranking methodγ ij ，
In the formula (I), the compound is shown in the specification,γ ij a weight coefficient for the ith evaluation index;
n is the number of evaluation index items;
m is an importance ranking number, and m is less than or equal to n;
according to the index score and the weight coefficient, calculating and determining the risk occurrence probability score according to the following formula,
P=∑R ij γ ij
in the formula:Pis a risk score;
R ij is the score of the evaluation index.
5. The comprehensive detection and evaluation method for old railway protection facilities, according to claim 4, wherein the probability level is described as frequent occurrence, the probability level is 5 when the risk score is greater than or equal to 60, the probability level is described as possible occurrence, the probability level is 4 when the risk score is greater than or equal to 30 and less than 45, the probability level is described as accidental occurrence, the probability level is 3 when the risk score is greater than or equal to 15 and less than 30, the probability level is described as rare occurrence, the probability level is 2, the probability level is described as highly unlikely occurrence when the risk score is less than 15, and the probability level is 1.
6. The comprehensive detection and evaluation method for old retaining and protecting facilities of existing railways according to claim 1, wherein the evaluation indexes of the driving conditions comprise disaster-bearing body characteristics of the railway facilities, driving safety influence and emergency degree, the disaster-bearing body characteristics comprise track-climbing probability and collapse volume, the driving safety influence comprises driving speed, driving number, driving type and driving environment, and the emergency degree comprises station stock preparation distance, emergency material manual carrying distance, and large mechanical approach conditions of excavators and forklifts.
7. The comprehensive detection and evaluation method for old railway maintenance facilities according to claim 6, wherein the result score is calculated by the following method:
wherein, the first and the second end of the pipe are connected with each other,Cin order to be a result score,S i for the score of each of the evaluation indexes,y i are the weight coefficients.
8. The comprehensive detection and evaluation method for old railway protection facilities, according to claim 7, wherein when the consequence score is greater than or equal to 60, the consequence grade is described as catastrophic, the probability grade is 5, when the consequence score is greater than or equal to 45 and less than 60, the consequence grade is described as severe, the probability grade is 4, when the consequence score is greater than or equal to 30 and less than 45, the consequence grade is described as severe, the probability grade is 3, when the consequence score is greater than or equal to 15 and less than 30, the consequence grade is described as large, the probability grade is 2, when the consequence score is less than 15, the consequence grade is described as mild, and the probability grade is 1.
9. The comprehensive detection and evaluation method for the old retaining and protecting facilities of the existing railway according to claim 1, characterized in that when the overall risk level is extremely high, the acceptance criterion is unacceptable, and the control strategy is to take special remedial measures to reduce the risk level and carry out disaster risk monitoring and early warning;
when the total risk level is high, the receiving criterion is not expected, and the control strategy is to adopt reinforcement and remediation to monitor the disaster risk;
when the overall risk level is moderate, the acceptance criterion is acceptable, the control strategy is to strengthen the field inspection tour and carry out disaster risk monitoring;
and when the overall risk level is low, the acceptance criterion is acceptance, the control strategy is operation maintenance, and no special risk control measure is needed.
10. The comprehensive detection and evaluation method for the old retaining and protecting facilities of the existing railway according to claim 9, wherein the monitoring and early warning comprises tracking and monitoring the deformation and damage process of the geological disaster point, and judging and analyzing the steady state and the variation trend of the geological disaster point.
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| CN116309552A (en) * | 2023-05-12 | 2023-06-23 | 西南交通大学 | Method, device, equipment and medium for evaluating health state of existing line old retaining wall |
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| CN116309552A (en) * | 2023-05-12 | 2023-06-23 | 西南交通大学 | Method, device, equipment and medium for evaluating health state of existing line old retaining wall |
| CN116309552B (en) * | 2023-05-12 | 2023-08-29 | 西南交通大学 | Method, device, equipment and medium for evaluating health state of existing line old retaining wall |
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