CN109684785A - A kind of deep high stress tunnel country rock dynamic damage failure evolvement method and system - Google Patents
A kind of deep high stress tunnel country rock dynamic damage failure evolvement method and system Download PDFInfo
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Abstract
The invention discloses a kind of deep high stress tunnel country rock dynamic damage failure evolvement method and system.The temporal and spatial evolution and dynamic response mechanism deformed using wall rock destabilization in the high stress tunnel digging process of the method for the present invention analog deep, inverting high stress surrounding rock displacement subregion, crack subregion, the dynamic development process of stress division and Damage division, experiment basis and theoretical foundation are provided to analyse in depth off-load mechanism of disturbance and the coupling supporting technology of deep high stress tunnel country rock, and it is single to overcome existing numerical simulation technology modeling structure, goal-setting is fuzzy, monitor poor continuity, the difficult disadvantage of operation feedback, it is accurate to provide a kind of modeling, it is with clearly defined objective, synchronous coordination, continuous monitoring, the building and operation method of the deep high stress tunnel country rock dynamic damage failure evolvement numerical model of Real-time Feedback.
Description
Technical field
The present invention relates to underground engineering rock mass numerical simulation technology fields, enclose more particularly to a kind of deep high stress tunnel
Rock dynamic damage failure evolvement method and system.
Background technique
It shifts and extends from earth's surface superficial part to deep with mining mineral resource and energy development, high-ground stress, high hydrostatic pressure
Power, Thief zone water pressure and strong exploitation disturbing influence are further violent.The geomechanics environment of roadway surrounding rock is increasingly sophisticated,
Deep high stress tunnel country rock shows a series of engineerings such as noncontinuity, discordant large deformation, a wide range of unstable failure and rings
Problem is answered, the failure mechanism and stability control of deep high stress tunnel country rock become research hotspot.
Numerical simulation technology as with computer simulation software carry out numerical analysis simulation trial method and practical technique,
By being transported by the powerful datamation of computer by the multi-subject knowledges mixing together such as mathematics, mechanics, statistics, Neo-Confucianism
Calculation system provides service for engineering design, analysis of cases, account valuation, construction construction, risk assessment and scientific research prediction, has
The advantages that low in cost, convenience of calculation, precision height, good developing effect, strong timeliness, be widely used to geotechnical engineering,
The numerous areas such as matter engineering, tunnel engineering, mining engineering, road and bridge engineering.Especially in the deformation failure of deep underground engineering rock mass
In analysis, numerical analysis method based on FInite Element, distinct element method, boundary element method, Interface Element Method and Numerical Manifold Method,
Important function has been played in the simulation application in underground engineering exploitation field.
For the problems such as deep high stress tunnel country rock deformation quantity is big, extent of the destruction is high, supporting stability is poor, country rock is found out
The catastrophe inoculation mechanism of buckling deformation finds out the dynamic evolution relationship of spatial structure of surrounding rock masses and stress distribution, discloses country rock release
It is particularly important with the dynamic response mechanism of load transmitting.And it goes to establish roadway surrounding rock using scientific and reasonable numerical simulation technology
Dynamic damage damage model, it is right by the overall process of simulation inverting deep high stress tunnel surrouding rock deformation unstability to lesion ruptures
Carry out high stress country rock theory analysis and engineering Application Research is significant.However, using existing numerical simulation technology to deep
When high stress tunnel country rock carries out the building and operation of dynamic damage failure evolvement numerical model, often there is modeling structure list
One, goal-setting is fuzzy, monitoring poor continuity, runs the difficult disadvantage of feedback.
Summary of the invention
The object of the present invention is to provide a kind of deep high stress tunnel country rock dynamic damage failure evolvement method and system, with
Solve the disadvantage that existing numerical simulation technology modeling structure is single, goal-setting is fuzzy, monitors poor continuity, runs feedback hardly possible.
To achieve the above object, the present invention provides following schemes:
A kind of deep high stress tunnel country rock dynamic damage failure evolvement method, which comprises
Obtain the physical and mechanical parameter of deep high stress tunnel country rock；The physical and mechanical parameter include rock density,
Volume, strengths in tension and compression, elasticity modulus, bulk modulus, Poisson's ratio, internal friction angle, cohesive force, the coefficient of strain, stress gradient；
The rock stratum distribution histogram of the deep high stress tunnel country rock is generated according to the physical and mechanical parameter；
Roadway surrounding rock model is established according to the physical and mechanical parameter and the rock stratum distribution histogram；
The damage evolution process of the roadway surrounding rock model is simulated using numerical simulation software；
Obtain the simulation cloud atlas of the damage evolution process；
The temporal-spatial evolution rule that wall rock destabilization deforms in the high stress tunnel digging process of deep are determined according to the simulation cloud atlas
Rule and dynamic response mechanism, and inverting high stress surrounding rock displacement subregion, crack subregion, stress division and Damage division dynamic hair
Exhibition process；
Determine that the deep is high according to the dynamic development process, the temporal and spatial evolution and the dynamic response mechanism
The emphasis stabilization zone of stress tunnel surrounding rock failure and support pattern.
Optionally, the rock stratum for generating the deep high stress tunnel country rock according to the physical and mechanical parameter is distributed column
Shape figure, specifically includes:
Obtain the rock stratum distributed structure feature of the deep high stress tunnel country rock；The rock stratum distributed structure feature includes
Lithologic character and rock stratum attribute；
According to the physical and mechanical parameter and the rock stratum distributed structure feature, according to the lithologic character and the rock stratum
Attribute sorts out every layer of rock of the deep high stress tunnel country rock, and according to upper and lower level sequence layer position relationship to every layer
Rock carries out ordered arrangement, and the rock stratum of the deep high stress tunnel country rock is made on the basis of layered arrangement sort merge
Distribution histogram.
Optionally, it is described using numerical simulation software simulate the roadway surrounding rock model damage evolution process it
Before, further includes:
The yield failure criterion of the roadway surrounding rock model is set on the operation platform of the numerical simulation software, it is described
Superficial part country rock in roadway surrounding rock model uses mole-coulomb criterion of strength, and deep wall rock uses D-P criterion of strength.
Optionally, it is described using numerical simulation software simulate the roadway surrounding rock model damage evolution process it
Before, further includes:
Displacement-stress boundary of the roadway surrounding rock model is adjusted about at the parameter designing interface of the numerical simulation software
Beam condition；The displacement boundary constraint condition of the roadway surrounding rock model is arranged are as follows: roadway surrounding rock model front, rear, left and right
Four sides are single constrained displacement boundary, and taking the displacement of x-axis direction is 0, and the displacement in y-axis direction is not 0；The roadway surrounding rock model
Bottom boundary is defined as staff cultivation boundary, and the displacement of x-axis, y-axis direction is 0；It is defined as at the top of the roadway surrounding rock model certainly
By boundary, the displacement of x-axis, y-axis direction is not constrained；Mould is set by the stress boundary constraint condition of the roadway surrounding rock model
Before type, below pressed by positive pressure, the left side, the right side are pressed by lateral pressure, and bottom is acted on by support force, at the top of model by
Uniform Load applies vertical stress.
Optionally, the damage evolution process that the roadway surrounding rock model is simulated using numerical simulation software, tool
Body includes:
Roadway surrounding rock model stagnant-plasticity after elastic strain-surrender extension-elasticity is simulated using numerical simulation software
The dynamic damage of wall rock destabilization, rock shifting deformation and Behavior Under Unloading Condition under softening-plastic failure-remnants failure continuous analog state is drilled
Change process.
Optionally, the simulation cloud atlas for obtaining the damage evolution process, specifically includes:
Obtain the simulation cloud atlas of the damage evolution process；The simulation cloud atlas includes vertical stress or horizontal stress
Cloud atlas, maximum principal stress or minimum principal stress cloud atlas, vertical direction displacement or horizontal direction displacement cloud atlas and plastic zone of surrounding rock
Development and evolution and extension destroy cloud atlas.
A kind of deep high stress tunnel country rock dynamic damage failure evolvement system, the system comprises:
Parameter acquisition module, for obtaining the physical and mechanical parameter of deep high stress tunnel country rock；The physical mechanics ginseng
Number include the density of rock, volume, strengths in tension and compression, elasticity modulus, bulk modulus, Poisson's ratio, internal friction angle, cohesive force,
The coefficient of strain, stress gradient；
Rock stratum distribution histogram generation module, for generating the deep high stress tunnel according to the physical and mechanical parameter
The rock stratum distribution histogram of country rock；
Roadway surrounding rock model building module, for being established according to the physical and mechanical parameter and the rock stratum distribution histogram
Roadway surrounding rock model；
Evolutionary process analog module, the dynamic damage for simulating the roadway surrounding rock model using numerical simulation software are drilled
Change process；
It simulates cloud atlas and obtains module, for obtaining the simulation cloud atlas of the damage evolution process；
Engineering parameter determining module, for determining country rock in the high stress tunnel digging process of deep according to the simulation cloud atlas
The temporal and spatial evolution and dynamic response mechanism of buckling deformation, and inverting high stress surrounding rock displacement subregion, crack subregion, stress point
The dynamic development process in area and Damage division；
Supporting construction determining module, for according to the dynamic development process, the temporal and spatial evolution and the power
Response mechanism determines emphasis stabilization zone and the support pattern of the deep high stress tunnel surrounding rock failure.
Optionally, the rock stratum distribution histogram generation module specifically includes:
Rock stratum distributed structure feature acquiring unit, for obtaining the rock stratum distributed structure of the deep high stress tunnel country rock
Feature；The rock stratum distributed structure feature includes lithologic character and rock stratum attribute；
Rock stratum distribution histogram generation unit, for special according to the physical and mechanical parameter and the rock stratum distributed structure
Point sorts out every layer of rock of the deep high stress tunnel country rock according to the lithologic character and the rock stratum attribute,
And ordered arrangement is carried out to every layer of rock according to upper and lower level sequence layer position relationship, it is formulated on the basis of layered arrangement sort merge
The rock stratum distribution histogram of the deep high stress tunnel country rock out.
Optionally, the system also includes:
Yield failure criterion setup module, for simulating the roadway surrounding rock model using numerical simulation software described
Before damage evolution process, the surrender of the roadway surrounding rock model is set on the operation platform of the numerical simulation software
Failure criteria, wherein superficial part country rock uses mole-coulomb criterion of strength, and deep wall rock uses D-P criterion of strength.
Optionally, the system also includes:
Displacement-stress boundary constraint condition setup module, for simulating the tunnel using numerical simulation software described
Before the damage evolution process of country rock model, the tunnel is adjusted at the parameter designing interface of the numerical simulation software and is enclosed
The displacement of rock model-stress boundary constraint condition；The displacement boundary constraint condition of the roadway surrounding rock model is arranged are as follows: described
Four side of roadway surrounding rock model front, rear, left and right is single constrained displacement boundary, and taking the displacement of x-axis direction is 0, the position in y-axis direction
Move is not 0；The roadway surrounding rock model bottom boundary definition is staff cultivation boundary, and the displacement of x-axis, y-axis direction is 0；It is described
Free boundary is defined as at the top of roadway surrounding rock model, the displacement of x-axis, y-axis direction not constrains；By the roadway surrounding rock model
Stress boundary constraint condition is set as before model, is pressed below by positive pressure, and the left side, the right side are pressed by lateral pressure, bottom
Portion is acted on by support force, by Uniform Load at the top of model, applies vertical stress.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
The present invention provides a kind of deep high stress tunnel country rock dynamic damage failure evolvement method and system, using the present invention
The temporal and spatial evolution and dynamic response mechanism that wall rock destabilization deforms in the high stress tunnel digging process of method analog deep, instead
The dynamic development process of high stress surrounding rock displacement subregion, crack subregion, stress division and Damage division is drilled, to analyse in depth deep
The off-load mechanism of disturbance and coupling supporting technology of high stress tunnel country rock provide experiment basis and theoretical foundation, and overcome existing
Have the shortcomings that numerical simulation technology modeling structure is single, goal-setting is fuzzy, monitoring poor continuity, operation feedback hardly possible, provides
A kind of deep high stress tunnel country rock dynamic damage modeling accurate, with clearly defined objective, synchronous coordination, continuous monitoring, Real-time Feedback
The building and operation method of failure evolvement numerical model.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the flow chart of deep high stress tunnel country rock dynamic damage failure evolvement method provided by the invention；
Fig. 2 is that the implementation process of deep high stress tunnel country rock dynamic damage failure evolvement method provided by the invention is illustrated
Figure；
Fig. 3 is the rock stratum distribution histogram of high stress tunnel country rock in deep provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of deep high stress tunnel country rock dynamic damage failure evolvement system provided by the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of deep high stress tunnel country rock dynamic damage failure evolvement method and system, use
In the temporal-spatial evolution process that simulation deep high stress tunnel country rock dynamic damage is destroyed, to solve existing numerical simulation technology modeling
Structure is single, goal-setting is fuzzy, monitoring poor continuity, the disadvantage of operation feedback hardly possible.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Fig. 1 is the flow chart of deep high stress tunnel country rock dynamic damage failure evolvement method provided by the invention, and Fig. 2 is
The implementation process schematic diagram of deep high stress tunnel country rock dynamic damage failure evolvement method provided by the invention.Referring to Fig. 1 and
Fig. 2, deep high stress tunnel country rock dynamic damage failure evolvement method provided by the invention specifically include:
Step 101: obtaining the physical and mechanical parameter of deep high stress tunnel country rock.
Choosing has typical geology feature and the deep high stress tunnel country rock for constructing occurrence condition as modeling object, leads to
Cross the physical and mechanical parameter of rock under Rock Mechanics Test measurement Rock Under Uniaxial Compression and tri-axial test condition, the physical and mechanical parameter
Density, volume, strengths in tension and compression, elasticity modulus, bulk modulus including rock, internal friction angle, cohesive force, are answered at Poisson's ratio
Variable coefficient, stress gradient etc..
Step 102: column is distributed according to the rock stratum that the physical and mechanical parameter generates the deep high stress tunnel country rock
Figure.
After the physical and mechanical parameter for having measured rock, according to rock physical and mechanic parameter and rock stratum distributed structure feature,
Every layer of rock is sorted out according to lithologic character and rock stratum attribute, and is orderly arranged according to upper and lower level sequence layer position relationship
Column, make the rock stratum distribution histogram of deep high stress tunnel country rock, such as Fig. 3 institute on the basis of layered arrangement sort merge
Show.The rock stratum distribution histogram can clearly reflect depth of stratum, rock stratum title, lithologic character, rock stratum layer position and arrangement
Sequentially, to provide template foundation for the building of subsequent progress numerical model.
Step 103: roadway surrounding rock model is established according to the physical and mechanical parameter and the rock stratum distribution histogram.
It is reference with the physical and mechanical parameter and the rock stratum distribution histogram, according to pre-designed drift section
Shape, size dimension, buried depth and tunnel lay layer position reasonable Arrangement in rock stratum and excavate tunnel, specify roadway surrounding rock category
Property, tunnel depth and tunnel spacing, establish roadway surrounding rock structural model, provide operating basis frame for numerical simulation.
Step 104: the damage evolution process of the roadway surrounding rock model is simulated using numerical simulation software.
First using FLAC (Fast LagrangianAnalysis ofContinua, fast Lagrangian analysis),
ANSYS (finite element analysis software), UDEC (Universal Distinct Element Code, general discrete elements method journey
Sequence) etc. numerical simulation softwares, relying on above-mentioned rock physical and mechanic parameter and rock stratum distribution histogram to establish, " length x width x is high
Degree " meets the roadway surrounding rock model of the solid space of simulation prototype ratio.
Then need the yield failure criterion of setting country rock so that Numerical-Mode on the numerical simulation software operation platform
Quasi- to require normal operation according to specified, wherein superficial part country rock uses D-P using mole-coulomb criterion of strength, deep wall rock
(Drucker-Prager, Drucker-Prager) criterion of strength, surrouding rock deformation can be simulated by, which independently being set by parameter instruction, breaks
Badly in " stress of primary rock state-elastic deformation-elastic-plastic behavior-plastic yielding state-plastic failure state-residual damage
The excavation operating status of state " constantly Evolution Development.
Meanwhile roadway surrounding rock model length, width, the height established in Computer Numerical Simulation software according to early period
Specific size division matches the lattice number of high stress tunnel country rock automatically, to keep numerical simulation calculating process more scientific
Accurately.
The step 104 using numerical simulation software simulate the roadway surrounding rock model damage evolution process it
Before, it is also necessary to displacement-stress boundary of the roadway surrounding rock model is adjusted at the parameter designing interface of the numerical simulation software
Constraint condition, specifically:
The displacement boundary constraint condition of the roadway surrounding rock model is arranged are as follows: the roadway surrounding rock model is forward and backward, it is left,
Right four sides are single constrained displacement boundary, and taking the displacement of x-axis direction is 0, and the displacement in y-axis direction is not 0；The roadway surrounding rock mould
Type bottom boundary is defined as staff cultivation boundary, and the displacement of x-axis, y-axis direction is 0；It is defined as at the top of the roadway surrounding rock model
The displacement of free boundary, x-axis, y-axis direction not constrains；It sets the stress boundary constraint condition of the roadway surrounding rock model to
The forward and backward face of model is pressed by positive pressure, and left and right face is pressed by lateral pressure, and bottom is acted on by support force, by equal at the top of model
Cloth load action applies vertical stress.
Then commissioning test numerical simulation software inputs specified mathematical algorithms (such as Finite Element Difference Method, depression of order product
Point-score, Infinite element method, Discrete-parcel method etc.) and frequency dimension is calculated, set time frequency domain and excavation step, operational process
In on operation interface real-time optimization upgrade numerical algorithm, by the instruction design function custom variable name first of FISH language
And function, variable object and function structure are set, secondly design variable language and execution sentence, then in computer digital animation
Establish event trigger and the debugging degree of association in system, it is last it is built-in for data structure, composite function needed for simulation trial,
Array location and drawing for order record and analyze deep high stress tunnel country rock in elasticity by computer real-time monitoring system whole process
Wall rock destabilization, rock under stagnant after strain-surrender extension-elasticity-plasticity softening-plastic failure-remnants failure continuous analog state
Move the damage evolution process of deformation and Behavior Under Unloading Condition.
During dry run, the moment observes the plastic zone development trend of failure and deformation of surrounding rocks, to accurately hold building
The science and reasonability of model running state design the instruction of different times operation phase and spatial frequency domain by regulating command
Device and adjustment code, to call and check in time country rock " displacement-crack-stress-strain " by computer dynamic display system no
Deep high stress country rock instantaneous mutation, the temporal and spatial evolution that segmentation extends and subregion develops with the evolutionary phase, to building mould
The simulation trial result of type overall process carries out randomized test and real time information feedback, it is ensured that the accuracy of numerical simulation.
Step 105: obtaining the simulation cloud atlas of the damage evolution process.
After dry run, saves deep laneway surrounding rock plastic zone and destroy, stress evolution, be displaced differentiation, crack propagation
Etc. associated data files, instructed by design and code called successively to recall the data image of preservation, for example, by using FLAC number
Value simulation softward can be called by the mode of operation of input " plot con szz/sxx outline on " and check computer number
The vertical stress or horizontal stress cloud atlas that value simulation softward is autonomously generated；Pass through input " plot con smax/smin
The mode of operation calling of outline on " checks maximum principal stress or minimum principal stress cloud atlas, passes through input " plot con
The mode of operation calling of zdis/xdis outline on " checks vertical direction displacement or horizontal direction displacement cloud atlas, by defeated
The mode of operation calling for entering " plotblock state " checks that plastic zone of surrounding rock development and evolution and extension destroy cloud atlas.
By such operation mode, it is autonomously generated by the Computer Numerical Simulation software of sublevel segment call different periods
Simulate cloud atlas, can gradually obtain deep high stress tunnel surrouding rock deformation unstability each development evolvement stage " stress-is displaced-splits
Gap " dynamic damage destroys Characteristics of Evolution, and the differentiation cloud atlas of different phase sum up to complete model construction and Numerical-Mode
Quasi- inverting overall process.
Using deep high stress tunnel country rock dynamic damage failure evolvement method of the present invention, analog deep height is answered
The temporal and spatial evolution and dynamic response mechanism that wall rock destabilization deforms during power roadway excavation, inverting high stress surrounding rock displacement point
Area, crack subregion, stress division and Damage division dynamic development process, unloaded to analyse in depth deep high stress tunnel country rock
Lotus mechanism of disturbance and coupling supporting technology provide experiment basis and theoretical foundation.
Step 106: according to the simulation cloud atlas determine that wall rock destabilization in the high stress tunnel digging process of deep deforms when
Empty Evolution and dynamic response mechanism, and inverting high stress surrounding rock displacement subregion, crack subregion, stress division and Damage division
Dynamic development process.
Step 107: institute is determined according to the dynamic development process, the temporal and spatial evolution and the dynamic response mechanism
State emphasis stabilization zone and the support pattern of deep high stress tunnel surrounding rock failure.
It can determine the depth according to the dynamic development process, the temporal and spatial evolution and the dynamic response mechanism
The main trend and main region of portion's high stress tunnel surrounding rock failure, these regions should be used as emphasis stabilization zone and reinforced；According to
The main trend of high stress tunnel surrounding rock failure can determine the support patterns such as corresponding lining cutting.
Based on evolution method provided by the invention, it is broken that the present invention also provides a kind of deep high stress tunnel country rock dynamic damages
Bad Evolution System.Fig. 4 is the structural representation of deep high stress tunnel country rock dynamic damage failure evolvement system provided by the invention
Figure, referring to fig. 4, the system comprises:
Parameter acquisition module 401 is used to obtain the physical and mechanical parameter of deep high stress tunnel country rock；The physical mechanics
Parameter includes density, volume, strengths in tension and compression, elasticity modulus, bulk modulus, Poisson's ratio, internal friction angle, the cohesion of rock
Power, the coefficient of strain, stress gradient；
Rock stratum distribution histogram generation module 402, for generating the deep high stress according to the physical and mechanical parameter
The rock stratum distribution histogram of roadway surrounding rock；
Roadway surrounding rock model building module 403, for according to the physical and mechanical parameter and the rock stratum distribution histogram
Establish roadway surrounding rock model；
Evolutionary process analog module 404, for simulating the dynamic damage of the roadway surrounding rock model using numerical simulation software
Hurt evolutionary process；
It simulates cloud atlas and obtains module 405, for obtaining the simulation cloud atlas of the damage evolution process；
Engineering parameter determining module 406, for being determined in the high stress tunnel digging process of deep according to the simulation cloud atlas
The temporal and spatial evolution and dynamic response mechanism of wall rock destabilization deformation, and inverting high stress surrounding rock displacement subregion, crack subregion, answer
The dynamic development process of power subregion and Damage division；
Supporting construction determining module 407, for according to the dynamic development process, the temporal and spatial evolution and described dynamic
Force-responsive mechanism determines emphasis stabilization zone and the support pattern of the deep high stress tunnel surrounding rock failure.
Wherein, the rock stratum distribution histogram generation module 402 specifically includes:
Rock stratum distributed structure feature acquiring unit, for obtaining the rock stratum distributed structure of the deep high stress tunnel country rock
Feature；The rock stratum distributed structure feature includes lithologic character and rock stratum attribute；
Rock stratum distribution histogram generation unit, for special according to the physical and mechanical parameter and the rock stratum distributed structure
Point sorts out every layer of rock of the deep high stress tunnel country rock according to the lithologic character and the rock stratum attribute,
And ordered arrangement is carried out to every layer of rock according to upper and lower level sequence layer position relationship, it is formulated on the basis of layered arrangement sort merge
The rock stratum distribution histogram of the deep high stress tunnel country rock out.
The system also includes:
Yield failure criterion setup module, for simulating the roadway surrounding rock model using numerical simulation software described
Before damage evolution process, the surrender of the roadway surrounding rock model is set on the operation platform of the numerical simulation software
Failure criteria, the superficial part country rock in the roadway surrounding rock model use mole-coulomb criterion of strength, and deep wall rock is strong using D-P
Spend criterion.
Displacement-stress boundary constraint condition setup module, for simulating the tunnel using numerical simulation software described
Before the damage evolution process of country rock model, the tunnel is adjusted at the parameter designing interface of the numerical simulation software and is enclosed
The displacement of rock model-stress boundary constraint condition；The displacement boundary constraint condition of the roadway surrounding rock model is arranged are as follows: described
Four side of roadway surrounding rock model front, rear, left and right is single constrained displacement boundary, and taking the displacement of x-axis direction is 0, the position in y-axis direction
Move is not 0；The roadway surrounding rock model bottom boundary definition is staff cultivation boundary, and the displacement of x-axis, y-axis direction is 0；It is described
Free boundary is defined as at the top of roadway surrounding rock model, the displacement of x-axis, y-axis direction not constrains；By the roadway surrounding rock model
Stress boundary constraint condition is set as before model, is pressed below by positive pressure, and the left side, the right side are pressed by lateral pressure, bottom
Portion is acted on by support force, by Uniform Load at the top of model, applies vertical stress.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For system disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (10)
1. a kind of deep high stress tunnel country rock dynamic damage failure evolvement method, which is characterized in that the described method includes:
Obtain the physical and mechanical parameter of deep high stress tunnel country rock；The physical and mechanical parameter include the density of rock, volume,
Strengths in tension and compression, elasticity modulus, bulk modulus, Poisson's ratio, internal friction angle, cohesive force, the coefficient of strain, stress gradient；
The rock stratum distribution histogram of the deep high stress tunnel country rock is generated according to the physical and mechanical parameter；
Roadway surrounding rock model is established according to the physical and mechanical parameter and the rock stratum distribution histogram；
The damage evolution process of the roadway surrounding rock model is simulated using numerical simulation software；
Obtain the simulation cloud atlas of the damage evolution process；
According to the simulation cloud atlas determine temporal and spatial evolution that wall rock destabilization in the high stress tunnel digging process of deep deforms and
Dynamic response mechanism, and the active development mistake of inverting high stress surrounding rock displacement subregion, crack subregion, stress division and Damage division
Journey；
The deep high stress is determined according to the dynamic development process, the temporal and spatial evolution and the dynamic response mechanism
The emphasis stabilization zone and support pattern that roadway surrounding rock destroys.
2. deep high stress tunnel country rock dynamic damage failure evolvement method according to claim 1, which is characterized in that institute
The rock stratum distribution histogram for generating the deep high stress tunnel country rock according to the physical and mechanical parameter is stated, is specifically included:
Obtain the rock stratum distributed structure feature of the deep high stress tunnel country rock；The rock stratum distributed structure feature includes lithology
Feature and rock stratum attribute；
According to the physical and mechanical parameter and the rock stratum distributed structure feature, according to the lithologic character and the rock stratum attribute
Every layer of rock of the deep high stress tunnel country rock is sorted out, and according to upper and lower level sequence layer position relationship to every layer of rock
Ordered arrangement is carried out, the rock stratum distribution of the deep high stress tunnel country rock is made on the basis of layered arrangement sort merge
Histogram.
3. deep high stress tunnel country rock dynamic damage failure evolvement method according to claim 1, which is characterized in that institute
Before stating the damage evolution process for simulating the roadway surrounding rock model using numerical simulation software, further includes:
The yield failure criterion of the roadway surrounding rock model, the tunnel are set on the operation platform of the numerical simulation software
Superficial part country rock in country rock model uses mole-coulomb criterion of strength, and deep wall rock is quasi- using Drucker-Prager D-P intensity
Then.
4. deep high stress tunnel country rock dynamic damage failure evolvement method according to claim 3, which is characterized in that institute
Before stating the damage evolution process for simulating the roadway surrounding rock model using numerical simulation software, further includes:
Displacement-stress boundary constraint item of the roadway surrounding rock model is adjusted at the parameter designing interface of the numerical simulation software
Part；The displacement boundary constraint condition of the roadway surrounding rock model is arranged are as follows: four side of roadway surrounding rock model front, rear, left and right
It is single constrained displacement boundary, taking the displacement of x-axis direction is 0, and the displacement in y-axis direction is not 0；The roadway surrounding rock model bottom
Boundary definition is staff cultivation boundary, and the displacement of x-axis, y-axis direction is 0；Free margins is defined as at the top of the roadway surrounding rock model
The displacement on boundary, x-axis, y-axis direction not constrains；Model is set by the stress boundary constraint condition of the roadway surrounding rock model
Front is pressed by positive pressure below, and the left side, the right side are pressed by lateral pressure, and bottom is acted on by support force, by equal at the top of model
Cloth load action applies vertical stress.
5. deep high stress tunnel country rock dynamic damage failure evolvement method according to claim 4, which is characterized in that institute
The damage evolution process for simulating the roadway surrounding rock model using numerical simulation software is stated, is specifically included:
It is soft that roadway surrounding rock model stagnant-plasticity after elastic strain-surrender extension-elasticity is simulated using numerical simulation software
Wall rock destabilization, rock under change-plastic failure-remnants failure continuous analog state move the damage evolution of deformation and Behavior Under Unloading Condition
Process.
6. deep high stress tunnel country rock dynamic damage failure evolvement method according to claim 5, which is characterized in that institute
The simulation cloud atlas for obtaining the damage evolution process is stated, is specifically included:
Obtain the simulation cloud atlas of the damage evolution process；The simulation cloud atlas includes vertical stress or horizontal stress cloud
Figure, maximum principal stress or minimum principal stress cloud atlas, vertical direction displacement or horizontal direction displacement cloud atlas and plastic zone of surrounding rock hair
Performing and extension destroy cloud atlas.
7. a kind of deep high stress tunnel country rock dynamic damage failure evolvement system, which is characterized in that the system comprises:
Parameter acquisition module, for obtaining the physical and mechanical parameter of deep high stress tunnel country rock；The physical and mechanical parameter packet
Include density, volume, strengths in tension and compression, elasticity modulus, bulk modulus, Poisson's ratio, the internal friction angle, cohesive force, strain of rock
Coefficient, stress gradient；
Rock stratum distribution histogram generation module, for generating the deep high stress tunnel country rock according to the physical and mechanical parameter
Rock stratum distribution histogram；
Roadway surrounding rock model building module, for establishing tunnel according to the physical and mechanical parameter and the rock stratum distribution histogram
Country rock model；
Evolutionary process analog module, for simulating the damage evolution mistake of the roadway surrounding rock model using numerical simulation software
Journey；
It simulates cloud atlas and obtains module, for obtaining the simulation cloud atlas of the damage evolution process；
Engineering parameter determining module, for determining wall rock destabilization in the high stress tunnel digging process of deep according to the simulation cloud atlas
The temporal and spatial evolution and dynamic response mechanism of deformation, and inverting high stress surrounding rock displacement subregion, crack subregion, stress division and
The dynamic development process of Damage division；
Supporting construction determining module, for according to the dynamic development process, the temporal and spatial evolution and the dynamic response
Mechanism determines emphasis stabilization zone and the support pattern of the deep high stress tunnel surrounding rock failure.
8. deep high stress tunnel country rock dynamic damage failure evolvement system according to claim 7, which is characterized in that institute
Rock stratum distribution histogram generation module is stated to specifically include:
Rock stratum distributed structure feature acquiring unit, the rock stratum distributed structure for obtaining the deep high stress tunnel country rock are special
Point；The rock stratum distributed structure feature includes lithologic character and rock stratum attribute；
Rock stratum distribution histogram generation unit, for according to the physical and mechanical parameter and the rock stratum distributed structure feature, according to
Every layer of rock of the deep high stress tunnel country rock is sorted out according to the lithologic character and the rock stratum attribute, and according to
Upper and lower level sequence layer position relationship carries out ordered arrangement to every layer of rock, makes on the basis of layered arrangement sort merge described
The rock stratum distribution histogram of deep high stress tunnel country rock.
9. deep high stress tunnel country rock dynamic damage failure evolvement system according to claim 7, which is characterized in that institute
State system further include:
Yield failure criterion setup module, in the dynamic for simulating the roadway surrounding rock model using numerical simulation software
Before damage development process, the yield failure of the roadway surrounding rock model is set on the operation platform of the numerical simulation software
Criterion, wherein superficial part country rock uses mole-coulomb criterion of strength, and deep wall rock uses D-P criterion of strength.
10. deep high stress tunnel country rock dynamic damage failure evolvement system according to claim 9, which is characterized in that
The system also includes:
Displacement-stress boundary constraint condition setup module, for simulating the roadway surrounding rock using numerical simulation software described
Before the damage evolution process of model, the roadway surrounding rock mould is adjusted at the parameter designing interface of the numerical simulation software
The displacement of type-stress boundary constraint condition；The displacement boundary constraint condition of the roadway surrounding rock model is arranged are as follows: the tunnel
Four side of country rock model front, rear, left and right is single constrained displacement boundary, and taking the displacement of x-axis direction is 0, and the displacement in y-axis direction is not
It is 0；The roadway surrounding rock model bottom boundary definition is staff cultivation boundary, and the displacement of x-axis, y-axis direction is 0；The tunnel
Free boundary is defined as at the top of country rock model, the displacement of x-axis, y-axis direction not constrains；By the stress of the roadway surrounding rock model
Edge-restraint condition is set as before model, is pressed below by positive pressure, and the left side, the right side are pressed by lateral pressure, bottom by
Support force effect, model top are applied vertical stress by Uniform Load.
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