CN109087028A - Karst strata metro construction shield machine section risk evaluating method and system - Google Patents
Karst strata metro construction shield machine section risk evaluating method and system Download PDFInfo
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Abstract
Disclose a kind of karst strata metro construction shield machine section risk evaluating method and system.This method may include: it is for statistical analysis for section, obtain feature condition model, establish the displacement cloud atlas that solution cavity is located at different location；Grid dividing is carried out to section, obtains gridding interval graph, and then calculate the ratio of grid number shared by solution cavity；Karst is established to the hierarchical structure of construction factor, according to the ratio of grid number shared by displacement cloud atlas and solution cavity, the significance level of each construction factor of each section in determination section；According to significance level, determines the weight coefficient judgment matrix of each construction factor, calculate the weight coefficient of each construction factor；According to the weight coefficient of each construction factor, the degree of danger of each section in determination section.The present invention is compared by solution cavity situation to the factor applying section domain and being affected, and then knows the degree of danger of each section, is of great significance to subsequent processing.
Description
Technical field
The present invention relates to karst strata subway work fields, more particularly, to a kind of karst strata metro construction shield machine
Section risk evaluating method and system.
Background technique
Urbanization in China has been introduced into the accelerated development stage, since subway has safe, quick, convenient and fast spy
Point, so more and more cities start to build subway, and Karst Problem is the main geologic hardly possible faced in Metro Construction
One of topic.Since karst is widely distributed, China's Transportation Infrastructure Construction and development can all be affected.It is built in karst area
Underground engineering, such as the Metro Tunnel and Metro station excavation engineering in Construction of Urban Rail Traffic, in work progress due to
Karst Geology and caused by gushing water, prominent mud have become one of disaster the most serious.
In October, 2009, Croatia have held " European rock mechanics science conference in 2009 ", this time academic conference
Theme is " rock engineering-soft rock and karst under the conditions of difficult stratum ", mainly discusses the engineering geology hydrology of karst area
The problems such as condition, rock property test method, Design and analysis methods and excavation supporting.From can in the holding of this meeting
Attention of the countries in the world to Karst Problem out, now, with the further investigation to environmental geotechnical and geological disaster, karst is asked
Topic is quickly grown.Landform on the earth there are about 15% is karst landforms, and China is that karst distribution is most extensive in the world
One of country.Within Chinese territory, can lava distribution area up to 3,650,000 sq-kms, more than the 1/3 of Chinese territory total area.
And in recent years, as underground structure is received and used extensively, various researchs relevant to karst are also more and more therewith.It is common
Method have: mathematical model method, numerical analysis method.
Since the 1940s, finite difference calculus (FDM) is just widely used in project analysis.The sixties limited list
First method (FEM) is applied in geotechnical engineering, and Finite Element is each in geotechnological seepage flow, consolidation, stabilization and deformation analysis etc.
Field is widely used.In order to solve the problems, such as discontinuous media, discrete element method (DEM) and Discontinuous Deformation are developed
Analytic approach (DDM).Manifold method method (MM) has been developed in recent years.Some big strain problems are further encountered in rock-soil mechanics, fastly
Fast Lagrangian method (FLAC), using difference formula, allows medium to have big deformation based on Continuum Mechanics.State at present
Interior many scholars carry out numerical simulation to Practical Project using numerical analysis method.Common method has: FInite Element, discrete list
First method, discontinuous deformation analysis method, manifold method method, fast Lagrangian method, numerical analysis method, but can not all analyze each
Risk factor is on the size for applying the influence of section domain.Therefore, it is necessary to develop a kind of karst strata metro construction shield machine section risk
Evaluation method and system.
The information for being disclosed in background of invention part is merely intended to deepen the reason to general background technique of the invention
Solution, and it is known to those skilled in the art existing to be not construed as recognizing or imply that the information is constituted in any form
Technology.
Summary of the invention
The invention proposes a kind of karst strata metro construction shield machine section risk evaluating method and systems, can pass through
Solution cavity situation is compared to the factor applying section domain and being affected, and then knows the degree of danger of each section, is had to subsequent processing
It is of great importance.
According to an aspect of the invention, it is proposed that a kind of karst strata metro construction shield machine section risk evaluating method.Institute
The method of stating may include: it is for statistical analysis for section, obtain feature condition model, establish the position that solution cavity is located at different location
Move cloud atlas；Grid dividing is carried out to section, obtains gridding interval graph, and then calculate the ratio of grid number shared by solution cavity；It establishes
Karst is to the hierarchical structure of construction factor, according to the ratio of grid number shared by the displacement cloud atlas and the solution cavity, described in determination
The significance level of each construction factor of each section in section；According to the significance level, the power of each construction factor is determined
Weight coefficient judgment matrix, calculates the weight coefficient of each construction factor；According to the weight coefficient of each construction factor, determine described in
The degree of danger of each section in section.
Preferably, the weight coefficient are as follows:
Wherein,For the weight coefficient of i-th of construction factor, CijWhere the construction factor in weight coefficient judgment matrix
Parameter.
Preferably, further includes: be standardized the weight coefficient of each construction factor, each after being standardized applies
The weight coefficient of work factor；According to the weight coefficient of each construction factor after standardization, each section in the section is determined
Degree of danger.
Preferably, the weight coefficient after the standardization are as follows:
Wherein, aiFor the weight coefficient of i-th of construction factor after standardization.
Preferably, further includes: according to the weight coefficient of each construction factor after standardization, calculate each in the section
The weight proportion of section, the smallest section of weight proportion are the maximum section of degree of danger.
According to another aspect of the invention, it is proposed that a kind of karst strata metro construction shield machine section Risk Evaluating System,
It is characterized in that, the system includes: memory, it is stored with computer executable instructions；Processor, described in processor operation
Computer executable instructions in memory execute following steps: it is for statistical analysis for section, obtain feature operating condition mould
Type establishes the displacement cloud atlas that solution cavity is located at different location；Grid dividing is carried out to section, obtains gridding interval graph, Jin Erji
Calculate the ratio of grid number shared by solution cavity；Karst is established to the hierarchical structure of construction factor, according to the displacement cloud atlas with it is described molten
The ratio of grid number shared by hole determines the significance level of each construction factor of each section in the section；According to described heavy
Degree is wanted, the weight coefficient judgment matrix of each construction factor is determined, calculates the weight coefficient of each construction factor；According to each
The weight coefficient of construction factor determines the degree of danger of each section in the section.
Preferably, the weight coefficient are as follows:
Wherein,For the weight coefficient of i-th of construction factor, CijWhere the construction factor in weight coefficient judgment matrix
Parameter.
Preferably, further includes: be standardized the weight coefficient of each construction factor, each after being standardized applies
The weight coefficient of work factor；According to the weight coefficient of each construction factor after standardization, each section in the section is determined
Degree of danger.
Preferably, the weight coefficient after the standardization are as follows:
Wherein, aiFor the weight coefficient of i-th of construction factor after standardization.
Preferably, further includes: according to the weight coefficient of each construction factor after standardization, calculate each in the section
The weight proportion of section, the smallest section of weight proportion are the maximum section of degree of danger.
The present invention has other characteristics and advantages, these characteristics and advantages are from the attached drawing and subsequent tool being incorporated herein
It will be apparent, or will be carried out in body embodiment in the drawings and the subsequent detailed description incorporated herein
Statement in detail, the drawings and the detailed description together serve to explain specific principles of the invention.
Detailed description of the invention
Exemplary embodiment of the present is described in more detail in conjunction with the accompanying drawings, of the invention is above-mentioned and other
Purpose, feature and advantage will be apparent, wherein in exemplary embodiments of the present invention, identical reference label is usual
Represent same parts.
Fig. 1 shows the process of the step of karst strata metro construction shield machine according to the present invention section risk evaluating method
Figure.
Fig. 2 shows the schematic diagrames of the gridding interval graph of L1-1 sub-segments according to an embodiment of the invention.
Fig. 3 shows the schematic diagram of the gridding interval graph of L1-2 sub-segments according to an embodiment of the invention.
Fig. 4 shows the signal that solution cavity according to an embodiment of the invention is located at the vertical displacement cloud atlas of tunnel upper
Figure.
Fig. 5 shows the signal for the vertical displacement cloud atlas that solution cavity according to an embodiment of the invention is located at below tunnel
Figure.
Fig. 6 shows the signal for the vertical displacement cloud atlas that solution cavity according to an embodiment of the invention is located at around tunnel
Figure.
Fig. 7 shows the schematic diagram of the hierarchical structure of construction factor according to an embodiment of the invention.
Specific embodiment
The present invention will be described in more detail below with reference to accompanying drawings.Although showing the preferred embodiment of the present invention in attached drawing,
However, it is to be appreciated that may be realized in various forms the present invention and should not be limited by the embodiments set forth herein.On the contrary, providing
These embodiments are of the invention more thorough and complete in order to make, and can will fully convey the scope of the invention to ability
The technical staff in domain.
Fig. 1 shows the process of the step of karst strata metro construction shield machine according to the present invention section risk evaluating method
Figure.
In this embodiment, karst strata metro construction shield machine according to the present invention section risk evaluating method can wrap
It includes: it is step 101, for statistical analysis for section, feature condition model is obtained, the displacement cloud that solution cavity is located at different location is established
Figure；Step 102, grid dividing is carried out to section, obtains gridding interval graph, and then calculate the ratio of grid number shared by solution cavity；
Step 103, it establishes karst and the hierarchical structure of construction factor is determined according to the ratio of grid number shared by displacement cloud atlas and solution cavity
The significance level of each construction factor of each section in section；Step 104, according to significance level, each construction factor is determined
Weight coefficient judgment matrix, calculate the weight coefficient of each construction factor；Step 105, according to the weight of each construction factor
Coefficient, the degree of danger of each section in determination section.
In one example, weight coefficient are as follows:
Wherein,For the weight coefficient of i-th of construction factor, CijWhere the construction factor in weight coefficient judgment matrix
Parameter.
In one example, further includes: be standardized the weight coefficient of each construction factor, after being standardized
The weight coefficient of each construction factor；According to the weight coefficient of each construction factor after standardization, each area in determination section
The degree of danger of section.
In one example, the weight coefficient after standardization are as follows:
Wherein, aiFor the weight coefficient of i-th of construction factor after standardization.
In one example, further includes: each in computation interval according to the weight coefficient of each construction factor after standardization
The weight proportion of a section, the smallest section of weight proportion are the maximum section of degree of danger.
Specifically, karst strata metro construction shield machine according to the present invention section risk evaluating method may include:
It is for statistical analysis for section, feature condition model is obtained, the displacement cloud atlas that solution cavity is located at different location is established；
Grid dividing is carried out to section, obtains gridding interval graph, and then calculate the ratio of grid number shared by solution cavity；Karst is established to applying
The hierarchical structure of work factor, according to the ratio of grid number shared by displacement cloud atlas and solution cavity, each of each section in determination section
The significance level of construction factor determines the weight system of the construction factor of structure at all levels according to significance level as shown in Table 1
Number judgment matrix.
Table 1
The weight system of each construction factor is calculated according to the weight coefficient judgment matrix of the construction factor of structure at all levels
Number is formula (1), the weight coefficient of each construction factor is standardized, the power of each construction factor after being standardized
Weight coefficient be formula (2), according to the weight coefficient judgment matrix of the construction factor of structure at all levels with standardize after it is each
The weight coefficient of construction factor, calculating Maximum characteristic root are formula (3):
Wherein, λmaxFor Maximum characteristic root, and consistency check is carried out by formula (4), formula (5):
C.I=(λmax-n)/(n-1) (4)
C.R=C.I/R.I (5).
Wherein, R.I is random index, as shown in table 2.Meet consistency inspection if obtained C.R≤0.1
It tests.
Table 2
According to formula (1)-(5), weight coefficient in computation interval after the standardization of each construction factor of each section,
And then computation interval in each section weight proportion, the smallest section of weight proportion be the maximum section of degree of danger.
This method is compared by solution cavity situation to the factor applying section domain and being affected, and then knows the danger of each section
Degree is of great significance to subsequent processing.
Using example
A concrete application example is given below in the scheme and its effect of the embodiment of the present invention for ease of understanding.This field
It should be understood to the one skilled in the art that the example is only for the purposes of understanding the present invention, any detail is not intended to be limited in any way
The system present invention.
Karst strata metro construction shield machine according to the present invention section risk evaluating method includes:
The karst situation in section is subjected to preliminary analysis first: the tunnel in section is segmented by length, it will be left
Line is divided into 6 sections, and right line is divided into 8 sections, simple analysis is counted and carried out by each section of karst situation, such as solution cavity height and tunnel
Road positional relationship etc. carries out engineering geological condition to left line and counts, as shown in table 3.
Table 3
Fig. 2 shows the schematic diagrames of the gridding interval graph of L1-1 sub-segments according to an embodiment of the invention.
Fig. 3 shows the schematic diagram of the gridding interval graph of L1-2 sub-segments according to an embodiment of the invention.
Then grid data method is used, research range (i.e. each section) is divided into grid matrix of uniform size, is such as schemed
2, Fig. 3 is the grid chart carried out after gridding statistics to left line first segment (L1), and the karst special project by being covered with grid reconnoitres work
Journey geology profilograph (indicating vertical profile direction) applies solution cavity for three with the densely distributed degree of tunnel clear distance, solution cavity size and solution cavity
Work factor is applying the situation progress quantitative statistics in section, counts into table, calculates the ratio of grid number shared by solution cavity, obtains
To the karst situation in each section of left line counted as a result, as shown in table 4.
Table 4
Fig. 4 shows the signal that solution cavity according to an embodiment of the invention is located at the vertical displacement cloud atlas of tunnel upper
Figure, wherein U2 indicates vertical displacement.
Fig. 5 shows the signal for the vertical displacement cloud atlas that solution cavity according to an embodiment of the invention is located at below tunnel
Figure, wherein U2 indicates vertical displacement.
Fig. 6 shows the signal for the vertical displacement cloud atlas that solution cavity according to an embodiment of the invention is located at around tunnel
Figure, wherein U2 indicates vertical displacement.
Fig. 7 shows the schematic diagram of the hierarchical structure of construction factor according to an embodiment of the invention.
It excavates that there are the case where karst to analyze to section, the feature operating condition of constructing tunnel is established using ABAQUS software
Model, when establishing respectively when solution cavity is located at tunnel upper and deviating 3m to the right, when solution cavity is located at tunnel lower section and deviates to the right
There are the operating conditions of multiple solution cavities when 3m, around tunnel, gentle perpendicular to the horizontal displacement of each operating condition, vertical displacement cloud atlas and surface water
It is compared and analyzes to displacement curve, if Fig. 4, Fig. 5, Fig. 6 are respectively to simulate solution cavity to be located at tunnel upper, lower section and tunnel week
Vertical displacement cloud atlas when enclosing is studied the influence that different solution cavity positions, solution cavity excavate section at a distance from tunnel etc., is obtained molten
The relative distance in hole and tunnel increases, and horizontal displacement and vertical displacement around tunnel can be made to reduce, but reduced effect is not
Obviously；The relative distance in solution cavity and tunnel increases, and can reduce influence of the solution cavity to tunnel excavation face ground settlement, make ground settlement
Curve is closer to Peck curve.It is assessed on the basis of the above analysis using analytic hierarchy process (AHP), analyzes karst area
Tunneling shield establishes karst to the level knot of subway shield tunnel construction security evaluation to the factor that construction safety has an impact when constructing
Structure, as shown in Figure 7；The method that second pair of each level factor uses comparative analysis two-by-two, wherein the country rock grade in geological conditions
It is to be determined according to rock weathering situation and the complete situation of core；Underground water influence include influence of the underground water to construction safety with
And the influence etc. to corrosion development；Rule layer items relative importance can see that solution cavity and construction tunnel according to the actual situation
Relationship between road be to the safety of subway shield tunnel construction it is most important, solution cavity self character takes second place, the difference of geological conditions
It is the smallest that influence to subway shield tunnel construction, which compares first two,.
Karst is established to the hierarchical structure of construction factor, including the relationship between solution cavity and tunnel, solution cavity characteristic, geology item
Part, wherein the relationship between solution cavity and tunnel includes solution cavity and tunnel clear distance, solution cavity and tunnel relative positional relationship, and solution cavity is special
Property include solution cavity size, solution cavity filling situation, the densely distributed degree of solution cavity, geological conditions include cranny development and filling situation,
Country rock grade, the influence of underground water, formation characteristics.
According to the ratio of grid number shared by displacement cloud atlas and solution cavity, each construction factor of each section in determination section
Significance level determines the weight coefficient judgment matrix of each construction factor, calculates the power of each construction factor according to significance level
Weight coefficient, the weight coefficient of each construction factor is calculated according to the weight coefficient judgment matrix of the construction factor of structure at all levels
For formula (1)；The weight coefficient of each construction factor is standardized, the weight of each construction factor after being standardized
Coefficient is formula (2).According to the weight coefficient judgment matrix of the construction factor of structure at all levels and each applying after standardization
The weight coefficient of work factor, calculating Maximum characteristic root are formula (3).
To between solution cavity and tunnel relationship, solution cavity characteristic, geological conditions weight coefficient judgment matrix be listed below:
The weight coefficient of relationship, solution cavity characteristic, geological conditions between available solution cavity and tunnel is respectively 0.540,
0.297 and 0.163, i.e. A2=(0.540,0.297,0.163), wherein λmax=3.009, C.I=0.005, C.R=0.009
≤ 0.1, meet consistency check.
Give in rule layer between solution cavity and construction tunnel in relationship two factors relative importance, solution cavity and ground
The distance of iron wire road distance can generate direct influence to track stability, when even solution cavity is far at a distance of construction tunnel, the two
Relative positional relationship influence will very little；And in the spatial relationship of solution cavity and subway line, solution cavity is for subway line side
The difference of position, the safe coefficient for influencing route are different.Such as when tunnel bottom is there are when solution cavity, if charges are soft, tunnels
The substrate in road is difficult to handle in the construction process；When solution cavity is in tunnel top, charges easily occur in digging process
The case where slump.Since the shield-tunneling construction that the relative distance between solution cavity and tunnel directly affects tunnel is safe, and relative position
Relationship is can be to the difficulty for increasing construction, so it is obvious to be greater than to the influence that shield-tunneling construction generates for solution cavity and tunnel clear distance
Solution cavity and tunnel relative positional relationship.The weight coefficient of solution cavity and tunnel clear distance, solution cavity and tunnel relative positional relationship is judged
Matrix is listed below:
The weight coefficient of available solution cavity and tunnel clear distance, solution cavity and tunnel relative positional relationship be respectively 0.667 and
0.333, i.e. A1=(0.667,0.333), wherein λmax=2.001, C.I=0.001, due to this level only there are two because
Element, so random index value is 0, without consistency check.
In solution cavity characteristic, this is given in rule layer, and solution cavity size, solution cavity filling situation and the densely distributed degree of solution cavity are over the ground
The influence degree of iron section shield-tunneling construction differs in size.Different due to being formed, the size of solution cavity cavern also can be different, grind
Its radius is taken in studying carefully to represent solution cavity size and carry out security evaluation.The size of solution cavity directly affects the safety of construction, while because
It will affect the distribution of plastic zone of surrounding rock for the presence of solution cavity, and the size of solution cavity can produce the location and range of plastic zone of surrounding rock
It is raw to influence, and influence clearly.Thus influence significance level of the solution cavity size to constructing tunnel is maximum.The filling of solution cavity
Situation is divided into many situations, generation type of the charges due to itself according to the type difference for having non-filler and filler
And the geological conditions of solution cavity is different, also divides many kinds, common are in engineering: plain fill, miscellaneous fill, block stone soil, clay
It is caught broken stone, gravelly soil, sand clay etc..The charges of solution cavity have much all without fully consolidated, so compression modulus very little, unstable
Fixed and water content is big.When tunnel passes through karst filling soil, incompact-deposit bodies, unstable easy hair are peeled off since country rock belongs to karst
It is raw to collapse.Therefore the influence significance level of solution-cavity filling situation is only second to solution cavity size.The densely distributed degree of solution cavity is divided into again with list
A solution cavity exists and exists with beading.Its influence significance level is compared to the above two minimums.To solution cavity size, solution cavity filling
The weight coefficient judgment matrix of the densely distributed degree of situation, solution cavity is listed below:
Available solution cavity size, solution cavity fill situation, the weight coefficient of the densely distributed degree of solution cavity is respectively 0.540,
0.297 and 0.163, wherein λmax=3.009, C.I=0.005, C.R=0.009≤0.1 meet consistency check.
The geological conditions of karst area will affect the safety of Subway Tunnel shield-tunneling construction.Formation characteristics is different, karst
Foundation stability is also different, so when tunnel passes through the soluble rock stratum that rock matter is crushed, it is likely that can collapse；Shield
Machine construction is tunneled in driving or rock stratum in soil layer, and safety is different.It is apparent available: strong due to rock itself
Degree can provide certain bearing capacity and ensure that shield is safer.The influence of underground water includes that underground water is influenced caused by construction
With the influence generated to corrosion developmental state: when encountering water pocket or underground river in tunneling shield work progress, will encounter
Uncontrollable situation, such as there is a large amount of karst water or mudstone water to pour into tunnel；And the frequent eustasy meeting of level of ground water
Accelerate corrosion rate of development.Country rock grade is divided according to indexs such as rock mass completeness and rock strengths, is mainly applied by tunnel
The complete situation of rock weathering situation and core at work determines.Crack belongs to a kind of rift structure, we will generally produce in rock mass
The obvious displacement of raw nothing is known as crack, and tunneling shield construction safety will receive cranny development and fill the influence of situation.Above-mentioned four
Maximum a factor influence degree is formation characteristics, followed by the influence of underground water, is finally country rock grade and crack and crack
Fill situation.To cranny development and filling situation, country rock grade, the influence of underground water, formation characteristics weight coefficient judge square
Battle array is listed below:
Available cranny development and filling situation, country rock grade, the influence of underground water, formation characteristics weight coefficient be
A3=(0.141,0.141,0.263,0.455), wherein λmax=4.010, C.I=0.003, C.R=0.003≤0.1 meet
Consistency check.
Detailed statistics and analysis have been carried out in the karst situation before to each section, has obtained the most dangerous section L1 of left line
Section, most dangerous R1, R4 section of right line.In conjunction with numerical simulation (ABAQUS) running tunnel excavate it is concluded that, with tunnel shield
Structure construction safety is general objective, calculates the weight proportion of three sections.
Using grid data statistics as foundation, three sections are to B11(solution cavity and tunnel clear distance) Paired comparison matrix are as follows:Weight vector is A11=(0.297,0.540,0.163).Three sections are to B12(the position of solution cavity and tunnel
Set relationship) Paired comparison matrix are as follows:Weight vector is A12=(0.163,0.540,0.297).Three areas
Section is to B21(solution cavity size) Paired comparison matrix are as follows:Weight vector is A21=(0.297,0.540,
0.163).Three sections are to B22(solution cavity filling situation) Paired comparison matrix are as follows:Weight vector is A22=
(0.297,0.163,0.540).Three sections are to B23(the densely distributed degree of solution cavity) Paired comparison matrix are as follows:Weight vector is A23=(0.540,0.297,0.163).Three sections are to country rock grade B32It is pairs of
Compare battle array are as follows:Weight vector is A32=(0.250,0.250,0.500).
So solution layer (L1 sections, R1 sections and R4 sections of safeties) is to the pass given in rule layer between solution cavity and construction tunnel
It is (B1) right vector calculated result such as table 5；Solution cavity characteristic (B2) right vector calculated result such as the following table 6；Geological conditions
(B3) right vector calculated result such as the following table 7.
Table 5
Table 6
Table 7
Solution layer is as above to the calculated result for giving rule layer in three sections, can continue to calculate to give rule layer to rule layer
Weight proportion such as the following table 8.
Table 8
Obtain in big elegant section that (karst applies metro shield to three sections to destination layer according to the calculated result of the above table 8
The security evaluation of work) weight proportion be respectively as follows: 0.289,0.459,0.252.In the analysis of the above karst, to engineering geology etc.
Situation counts and carries out the analysis of quantitative and semi-quantitative, using the method for grid data to karst situation quantitative analysis, obtain L1,
R1 and R4 sections is in big elegant section than relatively hazardous three sections.The knot of the result and numerical simulation (ABAQUS) analyzed in conjunction with karst
Weight of three sections to destination layer i.e. karst to the security evaluation of subway shield tunnel construction is calculated using analytic hierarchy process (AHP) in fruit
Ratio is respectively that 0.289,0.459,0.252, R4 section of weight proportion to construction factor is minimum, so R4 sections are the section or so
Most dangerous section in line construction.
In conclusion the present invention is compared by solution cavity situation to the factor applying section domain and being affected, and then know each
The degree of danger of section, is of great significance to subsequent processing.
It will be understood by those skilled in the art that above to the purpose of the description of the embodiment of the present invention only for illustratively saying
The beneficial effect of bright the embodiment of the present invention is not intended to limit embodiments of the invention to given any example.
Karst strata metro construction shield machine according to the present invention section Risk Evaluating System, which is characterized in that the system packet
Include: memory is stored with computer executable instructions；Processor, the computer that the processor is run in the memory can
It executes instruction, executes following steps: it is for statistical analysis for section, feature condition model is obtained, solution cavity is established and is located at difference
The displacement cloud atlas of position；Grid dividing is carried out to section, obtains gridding interval graph, and then calculate the ratio of grid number shared by solution cavity
Example；Karst is established to the hierarchical structure of construction factor, according to the ratio of grid number shared by displacement cloud atlas and solution cavity, in determination section
The significance level of each construction factor of each section；According to significance level, the weight coefficient judgement of each construction factor is determined
Matrix calculates the weight coefficient of each construction factor；According to the weight coefficient of each construction factor, each section in determination section
Degree of danger.
In one example, weight coefficient are as follows:
Wherein,For the weight coefficient of i-th of construction factor, CijWhere the construction factor in weight coefficient judgment matrix
Parameter.
In one example, further includes: be standardized the weight coefficient of each construction factor, after being standardized
The weight coefficient of each construction factor；According to the weight coefficient of each construction factor after standardization, each area in determination section
The degree of danger of section.
In one example, the weight coefficient after standardization are as follows:
Wherein, aiFor the weight coefficient of i-th of construction factor after standardization.
In one example, further includes: each in computation interval according to the weight coefficient of each construction factor after standardization
The weight proportion of a section, the smallest section of weight proportion are the maximum section of degree of danger.
This system is compared by solution cavity situation to the factor applying section domain and being affected, and then knows the danger of each section
Degree is of great significance to subsequent processing.
Various embodiments of the present invention are described above, above description is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes are obvious for the those of ordinary skill in art field.
Claims (10)
1. a kind of karst strata metro construction shield machine section risk evaluating method characterized by comprising
It is for statistical analysis for section, feature condition model is obtained, the displacement cloud atlas that solution cavity is located at different location is established；
Grid dividing is carried out to section, obtains gridding interval graph, and then calculate the ratio of grid number shared by solution cavity；
Karst is established to the hierarchical structure of construction factor, according to the ratio of grid number shared by the displacement cloud atlas and the solution cavity,
Determine the significance level of each construction factor of each section in the section；
According to the significance level, determines the weight coefficient judgment matrix of each construction factor, calculate the power of each construction factor
Weight coefficient；
According to the weight coefficient of each construction factor, the degree of danger of each section in the section is determined.
2. karst strata metro construction shield machine according to claim 1 section risk evaluating method, wherein the weight system
Number are as follows:
Wherein,For the weight coefficient of i-th of construction factor, CijGinseng where the construction factor in weight coefficient judgment matrix
Amount.
3. karst strata metro construction shield machine according to claim 2 section risk evaluating method, wherein further include:
The weight coefficient of each construction factor is standardized, the weight coefficient of each construction factor after being standardized；
According to the weight coefficient of each construction factor after standardization, the degree of danger of each section in the section is determined.
4. karst strata metro construction shield machine according to claim 3 section risk evaluating method, wherein the standardization
Weight coefficient afterwards are as follows:
Wherein, aiFor the weight coefficient of i-th of construction factor after standardization.
5. karst strata metro construction shield machine according to claim 4 section risk evaluating method, wherein further include:
According to the weight coefficient of each construction factor after standardization, the weight proportion of each section in the section, institute are calculated
Stating the smallest section of weight proportion is the maximum section of degree of danger.
6. a kind of karst strata metro construction shield machine section Risk Evaluating System, which is characterized in that the system includes:
Memory is stored with computer executable instructions；
Processor, the processor run the computer executable instructions in the memory, execute following steps:
It is for statistical analysis for section, feature condition model is obtained, the displacement cloud atlas that solution cavity is located at different location is established；
Grid dividing is carried out to section, obtains gridding interval graph, and then calculate the ratio of grid number shared by solution cavity；
Karst is established to the hierarchical structure of construction factor, according to the ratio of grid number shared by the displacement cloud atlas and the solution cavity,
Determine the significance level of each construction factor of each section in the section；
According to the significance level, determines the weight coefficient judgment matrix of each construction factor, calculate the power of each construction factor
Weight coefficient；
According to the weight coefficient of each construction factor, the degree of danger of each section in the section is determined.
7. karst strata metro construction shield machine according to claim 6 section Risk Evaluating System, wherein the weight system
Number are as follows:
Wherein,For the weight coefficient of i-th of construction factor, CijGinseng where the construction factor in weight coefficient judgment matrix
Amount.
8. karst strata metro construction shield machine according to claim 7 section Risk Evaluating System, wherein further include:
The weight coefficient of each construction factor is standardized, the weight coefficient of each construction factor after being standardized；
According to the weight coefficient of each construction factor after standardization, the degree of danger of each section in the section is determined.
9. karst strata metro construction shield machine according to claim 8 section Risk Evaluating System, wherein the standardization
Weight coefficient afterwards are as follows:
Wherein, aiFor the weight coefficient of i-th of construction factor after standardization.
10. karst strata metro construction shield machine according to claim 9 section Risk Evaluating System, wherein further include:
According to the weight coefficient of each construction factor after standardization, the weight proportion of each section in the section, institute are calculated
Stating the smallest section of weight proportion is the maximum section of degree of danger.
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| CN116681342A (en) * | 2023-06-13 | 2023-09-01 | 中铁十六局集团有限公司 | Method for evaluating disaster factor of tunnel face of water-rich sanded dolomite stratum tunnel |
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| CN116681342A (en) * | 2023-06-13 | 2023-09-01 | 中铁十六局集团有限公司 | Method for evaluating disaster factor of tunnel face of water-rich sanded dolomite stratum tunnel |
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