CN109492261A - A kind of extremely frigid zones dam deformation control method, device and controller - Google Patents
A kind of extremely frigid zones dam deformation control method, device and controller Download PDFInfo
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- CN109492261A CN109492261A CN201811199833.XA CN201811199833A CN109492261A CN 109492261 A CN109492261 A CN 109492261A CN 201811199833 A CN201811199833 A CN 201811199833A CN 109492261 A CN109492261 A CN 109492261A
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- G—PHYSICS
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/06—Earth-fill dams; Rock-fill dams
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Abstract
The invention discloses a kind of extremely frigid zones dam deformation control method, device and controllers, wherein, the dam body includes concrete slab and rock-fill dams, and the dam deformation control method includes: the rheological model parameter of the Duncan-Chang E-B Model Parameters and rock-fill dams that obtain dam body materials；The safety of dam body is evaluated according to the Duncan-Chang E-B Model Parameters and the rheological model parameter；Dam body materials subregion is determined according to evaluation result, fills program and concrete slab pours at least one of opportunity.Pass through the engineering characteristic such as Duncan-Chang E-B Model Parameters of dam material, and the rheological behavior of stockpile, the safety of concrete face rockfill dam is assessed using numerical analysis, dam body materials subregion can be reasonably selected, and to fill program, panel pour opportunity propose scientific basis, it solves the problems, such as to deform due to rock-fill dams excessive and concrete slab is caused the destructions such as to come to nothing and crack, provide guarantee for the safe operation of concrete face rockfill dam.
Description
Technical field
The invention belongs to hydraulic and hydroelectric engineering technical fields, and in particular to a kind of extremely frigid zones dam deformation control method,
Device and controller.
Background technique
The dam deformation amount of concrete face rockfill dam is affected by many factors, compactness, river valley shape such as dam body filler
Shape, the dam foundation geological conditions, fill mode and program etc..Consequence caused by concrete face rockfill dam excessive deformation is: face
Plate and periphery fissure deformation it is excessive cause seepage control system destroy and serious leakage, jeopardize dam operate normally with safety.It is more both at home and abroad
The actual monitorings of the built rock-fill dams of seat the result shows that, rockfill has the rheological equationm of state.The Rheological Deformation of rock is degrading
The Stress property of panel impervious body, can lead to panel come to nothing, attrition crushing and draw crack etc., seriously affect face dam
Later period on-road efficiency.
Concrete face rockfill dam is built in severe cold area, since natural environment is severe, construction window phase is shorter, such as uses
Substage construction panel concrete, it is possible to not finish panel concrete in 1 year and pour, influence project progress, be unfavorable for resource
Integrated configuration and construction configuration, to increase construction investment.Therefore, to generally use concrete slab in extremely frigid zones primary
It pours, at this time if rock-fill dams Deformation control is unfavorable, it is possible to so that concrete slab generates crack, comes to nothing etc. and to destroy, be bound to
It will affect the safety of concrete face rockfill dam leakage preventing structure.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of extremely frigid zones dam deformation control method, device and controller,
When solving for extremely frigid zones concrete slab primary concreting, make coagulation since rock-fill dams runtime sedimentation and deformation is excessive
Native panel and leakage preventing structure lead to the problem of destruction.
According in a first aspect, the embodiment of the invention provides a kind of extremely frigid zones dam deformation control method, dam body includes
Concrete slab and rock-fill dams, comprising:
Obtain the Duncan-Chang E-B Model Parameters of dam body materials and the rheological model parameter of rock-fill dams；
The safety of dam body is evaluated according to Duncan-Chang E-B Model Parameters and rheological model parameter；
Determine dam body materials subregion according to evaluation result, fill program and concrete slab pour in opportunity at least it
One.
Optionally, the Duncan-Chang E-B Model Parameters and rock-fill dams rheological model parameter of dam body materials are obtained, comprising: obtain
Take the triaxial compression test data of dam body materials；The first preset function, which is based on, according to triaxial compression test data obtains dam body materials
Duncan-Chang E-B Model Parameters, the Duncan-Chang E-B Model Parameters of dam body materials include tangent modulus of elasticity EtAnd tangent line
Bulk modulus Bt；The second preset function, which is based on, according to triaxial compression test data obtains rock-fill dams rheological model parameter.
Optionally, the first preset function includes: (σ1-σ3)~ε1Curve, εv~ε1Curve, τf~σnCurve, wherein σ1For
Big principal stress；σ3For minor principal stress；ε1For major principal strain, εvFor body strain, τfFor soil classifiction；σnFor on shear surface just
Stress；Second preset function includes: the relation curve of vertical load and deformation.
Optionally, the safety of dam body is evaluated according to Duncan-Chang E-B Model Parameters and rheological model parameter,
It include: to fill process and water storage process using finite element method for simulating dam body is practical；Assess the stress and deformation condition of dam body.
Optionally, dam body further includes leakage preventing structure；Assess the stress and deformation condition of dam body, comprising: calculate concrete surface
The change of the deformation of at least one of plate, rock-fill dams and leakage preventing structure and the regularity of distribution of stress and deformation and stress at any time
Law.
Optionally, dam body materials subregion is determined according to evaluation result, fill program and panel pour in opportunity at least it
One, comprising: according to the regularity of distribution of the deformation of at least one of concrete slab, rock-fill dams and leakage preventing structure and stress and
Deformation and stress change with time rule determine dam body materials subregion, fill program and panel pour in opportunity at least it
One.
It can be with according to the regularity of distribution of the deformation of at least one of concrete slab, rock-fill dams and leakage preventing structure and stress
Determine dam body materials subregion, at any time according to the deformation of at least one of concrete slab, rock-fill dams and leakage preventing structure and stress
Between changing rule can determine that filling program and panel pours opportunity.
According to second aspect, the embodiment of the invention provides a kind of extremely frigid zones dam deformation control device, dam body includes
Concrete slab and rock-fill dams, comprising:
Module is obtained, for obtaining the Duncan-Chang E-B Model Parameters of dam body materials and the rheological model ginseng of rock-fill dams
Number；
Evaluation module, for being carried out according to Duncan-Chang E-B Model Parameters and rheological model parameter to the safety of dam body
Evaluation；
Determining module, for determining dam body materials subregion according to evaluation result, filling program and when concrete slab pours
At least one of machine.
Optionally, obtaining module includes:
Acquiring unit, for obtaining the triaxial compression test data of dam body materials；
First computing unit, for obtaining Deng of dam body materials based on the first preset function according to triaxial compression test data
Agree-E-B model parameter, the Duncan-Chang E-B Model Parameters of dam body materials include tangent modulus of elasticity EtWith tangent line volume
Modulus Bt；
Second computing unit obtains rock-fill dams rheology mould for being based on the second preset function according to triaxial compression test data
Shape parameter.
According to the third aspect, the embodiment of the invention provides a kind of controllers, comprising: at least one processor；And with
The memory of at least one processor communication connection；Wherein, memory is stored with the instruction that can be executed by a processor, instruction
It is executed by least one processor, so that at least one processor executes extremely frigid zones dam deformation control method.
According to fourth aspect, the embodiment of the invention provides a kind of computer readable storage mediums, are stored with computer and refer to
It enables, computer instruction is for making computer execute extremely frigid zones dam deformation control method.
The embodiment of the invention provides a kind of extremely frigid zones dam deformation control method, device and controllers, by building a dam
The rheological behavior of the engineering characteristic of material such as Duncan-Chang E-B Model Parameters and stockpile, using numerical analysis to mixed
The safety of solidifying soil rock is assessed, and can reasonably select dam body materials subregion, and to fill program, panel pours when
Machine proposes scientific basis, and solve causes the concrete slab destructions such as come to nothing and crack to be asked since rock-fill dams deformation is excessive
Topic, provides guarantee for the safe operation of concrete face rockfill dam.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 shows extremely frigid zones dam deformation control method schematic diagram in the embodiment of the present invention；
Fig. 2 shows extremely frigid zones dam deformation control device schematic diagrames in the embodiment of the present invention；
Fig. 3 shows controller schematic diagram in the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
As shown in Figure 1, a kind of extremely frigid zones dam deformation control method, dam body includes concrete slab and rock-fill dams, dam
Body deformation control method includes:
S10. the Duncan-Chang E-B Model Parameters of dam body materials and the rheological model parameter of rock-fill dams are obtained.In this implementation
In example, dam body materials can be carried out with large-scale triaxial compression test, obtain the triaxial compression test data of dam body materials, then root
According to triaxial compression test data, according to the first preset function: (σ1-σ3)~ε1Curve, εv~ε1Curve, τf~σnCurve, wherein
σ1For big principal stress；σ3For minor principal stress；ε1For major principal strain, εvFor body strain, τfFor soil classifiction；σnFor on shear surface
Direct stress, inquire into the Duncan-Chang E-B Model Parameters of dam body materials, provide basis for finite element method (fem) analysis.
Duncan-Chang E-B Model Parameters include tangent modulus of elasticity EtWith tangent bulk modulus Bt, respectively by following two formula
It calculates:
Et=Ei(1-Rf·Sl)2 (1)
Bt=kb·Pa(σ3/Pa)m (2)
E in formulatFor initial tangential modulus, SlFor stress level, calculation expression is respectively
Ei=kPa(σ3/Pa)n (3)
In formula, k, n, kb、m、Rf、c、For material parameter.Wherein, c,For material shear index；K, n is respectively elasticity
Modulus coefficient and its power increased with confining pressure；kb, m be respectively bulk modulus coefficient and its to increase with confining pressure
Power；RfTo destroy ratio, it is defined as the ratio between deviator stress and limiting value when lateral confinement is destroyed, i.e.,
For Coarse Aggregate, a mole coulomb strength envelope is had a slight curvature, and presents to a certain extent non-linear, therefore takes c=0,It is calculated according to the following formula:
For the determining material parameter of test.
For unloading situation, tangent modulus of elasticity is replaced with the following modulus of resilience
Again by lateral confinement rheological test, the relation curve of the second preset function vertical load and deformation is drawn, long section is inquired into
Nine parameter Rheological Deformation parameter of institute, i.e. c, d, η, m, ca、da、cβ、dβ、λv, parameter foundation is provided to calculate analysis.
On the basis of test result of the Changjiang Academy of sciences according to a large amount of stockpiles, nine parameter rheology moulds of stockpile are proposed
Type.Rockfill axial direction rheology and the available power function expression of volume rheology:
In formula, εafAnd εVfFinal axial direction flow variables and final volume flow variables, ε respectively under some stress statea(t) and
εVIt (t) is respectively the axial direction and volume flow variables added up in 0~t period, λaAnd λvWhen respectively accumulative axial and volume rheology
Between power exponent.
Final axial direction flow variables εafWith stress level SlIt is as follows with the relationship of confining pressure:
λaWith stress level SlRelationship is unobvious.λaWith confining pressure σ3Relationship can be expressed with power function:
εVfWith confining pressure σ3With stress level SlUseable linear Function Fitting:
λVIt is unobvious with stress state relationship, it can be assumed that be constant:
λv=const (13)
Therefore, parameter c, d, η, m, ca、da、cβ、dβ、λvThe expressed intact rheological behavior of rockfill.
S20. the safety of dam body is carried out according to the Duncan-Chang E-B Model Parameters and the rheological model parameter
Evaluation.In the present embodiment, joined according to the rheological model parameter of the Duncan-Chang E-B Model Parameters of dam body materials and rock-fill dams
Number carries out finite element mesh to concrete face rockfill dam, fills and water storage according to 1 concrete face rockfill dam of table is practical
Process carries out finite element numerical simulation, calculates the deformation of concrete slab, rock-fill dams and leakage preventing structure and the regularity of distribution of stress
And deformation and stress change with time rule.
1 dam multi-stage construction of table and storage time program
Illustratively be illustrated below to result of finite element: rock-fill dams time of completion sedimentation and deformation maximum value is
0.944m, runtime sedimentation and deformation maximum value are 1.048m, and rock-fill dams later period Rheological Deformation maximum value is 10.4cm, later period deformation
Smaller, this is because Rockfill Dam lasts longer in the present embodiment, rock-fill dams sedimentation and deformation is most of complete in the time of completion
At this is advantageous the control of concrete slab pouring quality.In terms of concrete slab stress situation, the big portion of concrete slab
Point bear compression, tensile stress is distributed only over its marginal position and numerical value is smaller, concrete tensile strength permissible value range it
Interior, each sealing seam displacement in the range of its permission, illustrates that concrete face rockfill dam leakage preventing structure is in a safe condition.With
Upper numerical value is only illustratively illustrated, according to different condition of construction, can also there is other knots to result of finite element
Fruit.
S30. dam body materials subregion determined according to evaluation result, fill program and concrete slab pours in opportunity at least
One of.In the present embodiment, it is destroyed such as concrete face rockfill dam leakage preventing structure in the runtime, influences concrete surface sheetpile
The safety of masonry dam then illustrates that the deformation of dam body runtime is excessive, and it is too early that concrete slab pours opportunity, reply dam body materials point
Program is filled and concrete slab pours opportunity and is adjusted by area, according in concrete slab, rock-fill dams and leakage preventing structure extremely
The regularity of distribution of one of few deformation and stress can determine dam body materials subregion, according to concrete slab, rock-fill dams and antiseepage
The deformation of at least one of structure and the stress rule that changes with time can determine that filling program and panel pours opportunity, to the greatest extent
Dam deformation may be made to complete within the construction time, carry out disposably pouring for concrete slab after basicly stable again to dam deformation
It builds, by the control of dam body Rheological Deformation within the scope of concrete face rockfill dam leakage preventing structure can bear, avoids antiseepage knot
Structure generates the destruction such as crack because dam deformation is excessive.
By the rheological behavior of the engineering characteristic such as Duncan-Chang E-B Model Parameters and stockpile of dam material,
The safety of concrete face rockfill dam is assessed using numerical analysis, can reasonably select dam body materials subregion, and to filling out
Build program, panel pours opportunity and proposes scientific basis, solve since rock-fill dams deformation is excessive and lead to concrete slab
It the destructions problem such as comes to nothing and cracks, provide guarantee for the safe operation of concrete face rockfill dam.
The embodiment of the invention provides a kind of extremely frigid zones dam deformation control device, dam body includes concrete slab and heap
Masonry dam, as shown in Fig. 2, may include: to obtain module 10, for obtaining the Duncan-Chang E-B Model Parameters and heap of dam body materials
The rheological model parameter of masonry dam；Evaluation module 20 is used for according to Duncan-Chang E-B Model Parameters and rheological model parameter to dam
The safety of body is evaluated；Determining module 30, for determining dam body materials subregion according to evaluation result, filling program and coagulation
Native panel pours at least one of opportunity.
As optional embodiment, obtaining module 10 includes: acquiring unit, and the triaxial compressions for obtaining dam body materials try
Test data；First computing unit obtains dam body materials for being based on the first preset function according to the triaxial compression test data
Duncan-Chang E-B Model Parameters, the Duncan-Chang E-B Model Parameters of dam body materials include tangent modulus of elasticity EtAnd tangent line
Bulk modulus Bt；Second computing unit obtains rock-fill dams stream for being based on the second preset function according to triaxial compression test data
Varying model parameter.
The embodiment of the invention also provides a kind of controllers, as shown in figure 3, the controller includes one or more processors
In 31 and memory 32, Fig. 3 by taking a processor 31 as an example.
Controller can also include: input unit 33 and output device 34.
Processor 31, memory 32, input unit 33 and output device 34 can be connected by bus or other modes,
In Fig. 3 for being connected by bus.
Processor 31 can be central processing unit (Central Processing Unit, CPU).Processor 31 can be with
For other general processors, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
The combination of the chips such as discrete hardware components or above-mentioned all kinds of chips.General processor can be microprocessor or the processing
Device is also possible to any conventional processor etc..
Memory 32 is used as a kind of non-transient computer readable storage medium, can be used for storing non-transient software program, non-
Transient computer executable program and module, as the extremely frigid zones dam deformation control method in the embodiment of the present application is corresponding
Program instruction/module.Non-transient software program, instruction and module of the processor 31 by operation storage in memory 32,
Thereby executing the various function application and data processing of server, i.e. realization above method embodiment extremely frigid zones dam deformation
Control method.
Memory 32 may include storing program area and storage data area, wherein storing program area can storage program area,
Application program required at least one function；Storage data area can store the use of the processing unit according to user terminal operations
The data etc. created.In addition, memory 32 may include high-speed random access memory, it can also include non-transient storage
Device, for example, at least a disk memory, flush memory device or other non-transient solid-state memories.In some embodiments,
Optional memory 32 includes the memory remotely located relative to processor 31, these remote memories can pass through network connection
To image detection, processing unit.The example of above-mentioned network includes but is not limited to internet, intranet, local area network, moves and lead to
Letter net and combinations thereof.
Input unit 33 can receive the number or character information of input, and generate the use with the processing unit of user terminal
Family setting and the related key signals input of function control.Output device 34 may include that display screen etc. shows equipment.
One or more module stores in memory 32, when being executed by one or more processor 31, executes
Method as shown in Figure 1.
The embodiment of the invention also provides a kind of computer readable storage medium, computer-readable recording medium storage is calculated
Machine instruction, the extremely frigid zones dam deformation that computer instruction is used to that computer to be made to execute as described in any one of above-described embodiment
Control method.Wherein, storage medium can for magnetic disk, CD, read-only memory (Read-Only Memory, ROM), with
Machine storage memory (Random Access Memory, RAM), flash memory (Flash Memory), hard disk (HardDisk
Drive, abbreviation: HDD) or solid state hard disk (Solid-State Drive, SSD) etc.；Storage medium can also include above-mentioned kind
The combination of the memory of class.
Although being described in conjunction with the accompanying the embodiment of the present invention, those skilled in the art can not depart from the present invention
Spirit and scope in the case where various modifications and variations can be made, such modifications and variations are each fallen within by appended claims institute
Within the scope of restriction.
Claims (10)
1. a kind of extremely frigid zones dam deformation control method, the dam body include concrete slab and rock-fill dams, which is characterized in that
Include:
Obtain the Duncan-Chang E-B Model Parameters of dam body materials and the rheological model parameter of rock-fill dams；
The safety of dam body is evaluated according to the Duncan-Chang E-B Model Parameters and the rheological model parameter；
Dam body materials subregion is determined according to evaluation result, fills program and concrete slab pours at least one of opportunity.
2. according to dam deformation control method described in right 1, which is characterized in that the Duncan-Chang for obtaining dam body materials
E-B model parameter and rock-fill dams rheological model parameter, comprising:
Obtain the triaxial compression test data of dam body materials；
The Duncan-Chang E-B mould of the dam body materials is obtained based on the first preset function according to the triaxial compression test data
Shape parameter, the Duncan-Chang E-B Model Parameters of the dam body materials include tangent modulus of elasticity EtWith tangent bulk modulus Bt；
The second preset function, which is based on, according to the triaxial compression test data obtains the rock-fill dams rheological model parameter.
3. according to dam deformation control method described in right 1, which is characterized in that
First preset function includes: (σ1-σ3)~ε1Curve, εv~ε1Curve, τf~σnCurve, wherein σ1It is answered for master greatly
Power；σ3For minor principal stress；ε1For major principal strain, εvFor body strain, τfFor soil classifiction；σnFor the direct stress on shear surface；
Second preset function includes: the relation curve of vertical load and deformation.
4. according to dam deformation control method described in right 1, which is characterized in that described according to the Ducan-Chang E-B model
Parameter and the rheological model parameter evaluate the safety of dam body, comprising:
Process and water storage process are filled using finite element method for simulating dam body is practical；
Assess the stress and deformation condition of the dam body.
5. according to dam deformation control method described in right 4, which is characterized in that the dam body further includes leakage preventing structure；It is described
Assess the stress and deformation condition of the dam body, comprising:
Calculate the deformation of at least one of concrete slab, rock-fill dams and leakage preventing structure and the regularity of distribution and deformation of stress
It changes with time rule with stress.
6. according to dam deformation control method described in right 4, which is characterized in that described to determine dam body materials according to evaluation result
Subregion fills program and panel pours at least one of opportunity, comprising:
According to the regularity of distribution of the deformation of at least one of the concrete slab, rock-fill dams and leakage preventing structure and stress and
Deformation and stress change with time rule determine dam body materials subregion, fill program and panel pour in opportunity at least it
One.
7. a kind of extremely frigid zones dam deformation control device, the dam body include concrete slab and rock-fill dams, which is characterized in that
Include:
Module is obtained, for obtaining the Duncan-Chang E-B Model Parameters of dam body materials and the rheological model parameter of rock-fill dams；
Evaluation module, for the safety according to the Duncan-Chang E-B Model Parameters and the rheological model parameter to dam body
It is evaluated；
Determining module, for determining dam body materials subregion according to evaluation result, filling program and concrete slab poured in opportunity
At least one of.
8. according to dam deformation control device described in right 7, which is characterized in that the acquisition module includes:
Acquiring unit, for obtaining the triaxial compression test data of dam body materials；
First computing unit obtains the dam body materials for being based on the first preset function according to the triaxial compression test data
Duncan-Chang E-B Model Parameters, the Duncan-Chang E-B Model Parameters of the dam body materials include tangent modulus of elasticity EtWith
Tangent bulk modulus Bt；
Second computing unit obtains the rock-fill dams stream for being based on the second preset function according to the triaxial compression test data
Varying model parameter.
9. a kind of controller characterized by comprising at least one processor；And at least one described processor communication
The memory of connection；Wherein, the memory is stored with the instruction that can be executed by one processor, and described instruction is described
At least one processor executes, so that at least one described processor executes as claimed in any one of claims 1 to 6 high and cold
Regional dam deformation control method.
10. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has computer to refer to
It enables, the computer instruction is used to make the computer perform claim that extremely frigid zones dam body described in any one of 1-6 be required to become
Shape control method.
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| CN201811199833.XA CN109492261B (en) | 2018-10-15 | 2018-10-15 | Method and device for controlling deformation of dam body in alpine region and controller |
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| CN201811199833.XA CN109492261B (en) | 2018-10-15 | 2018-10-15 | Method and device for controlling deformation of dam body in alpine region and controller |
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