CN109635447A - Disconnected solution stress simulation analysis method and stress analysis model - Google Patents
Disconnected solution stress simulation analysis method and stress analysis model Download PDFInfo
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- CN109635447A CN109635447A CN201811536281.7A CN201811536281A CN109635447A CN 109635447 A CN109635447 A CN 109635447A CN 201811536281 A CN201811536281 A CN 201811536281A CN 109635447 A CN109635447 A CN 109635447A
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- G—PHYSICS
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- G06F30/20—Design optimisation, verification or simulation
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Abstract
The present invention discloses a kind of disconnected solution stress simulation analysis method, makes concrete model according to actual formation situation；And the measurement point inside concrete model places foil gauge group, foil gauge group is located at the inside of concrete model, can accurately measure the stress situation at internal measurement point；Each foil gauge group includes at least three foil gauges, after applying external force to concrete model, according to the measurement numerical value for each foil gauge being in the same plane in foil gauge group, and the relative positional relationship of each foil gauge, the stress situation of available measurement point, this method passes through the position of reasonable Arrangement foil gauge, accurately can comprehensively obtain the stress situation of concrete model, and thus from which further follow that the stress distribution situation inside disconnected solution actual formation.
Description
Technical field
The present invention relates to stratum dynamics analysis technical fields, further relate to a kind of disconnected solution stress simulation analysis side
Method.Moreover, it relates to a kind of stress analysis model.
Background technique
There is the construction such as tomography, solution cavity, intrinsic fracture, the solution oil reservoir memory space that breaks is with large-scale cave or molten in disconnected solution
It based on borrosion hole hole, is influenced by karst water and fault development degree, solution oil reservoir internal structure of breaking is extremely complex, and memory space is longitudinal
Heterogeneity is extremely strong, and vertically and horizontally seam hole structure is Compartmentalization obvious, and same fracture belt makes oil reservoir fill situation because of degree of crushing difference
It differs greatly.
For the development situation in carbonate rock typical case oil reservoir area, the block progressive evaluation utility strategies of many years have been continued to use
It is no longer applicable in, the mechanics distribution situation inside disconnected solution can not be accurately obtained.
For the technology of this field, the mechanics situation inside disconnected solution how is more accurately measured, is to need at present
Technical problems to be solved.
Summary of the invention
The present invention provides a kind of disconnected solution stress simulation analysis method and is obtained by the position of reasonable Arrangement foil gauge group
Accurate test result, concrete scheme are as follows:
A kind of disconnected solution stress simulation analysis method, comprising:
Concrete model is made according to actual formation situation；
Measurement point inside the concrete model places foil gauge group, and each foil gauge group includes at least three
Foil gauge, each foil gauge in the foil gauge group are generally aligned in the same plane, and have angle between the foil gauge；
External force is applied to the concrete model；
According to the foil gauge become and direction, obtain the stress distribution of the measurement point.
It is optionally, described to make concrete model according to actual formation situation, comprising:
Casting concrete for the first time forms the first model precursor；
According to the spatial form inside actual formation, filler is set in the first model precursor；
Second of casting concrete, wraps up the filler, forms the second model precursor；
Casting concrete is repeated, the concrete model is formed.
Optionally, the measurement point inside the concrete model places foil gauge, comprising:
For the first time after casting concrete, the first foil gauge group is placed on the first model precursor；
Second of casting concrete, covers the first foil gauge group；
It repeats to place foil gauge group, and is poured concrete.
Optionally, plane parallel where the external force direction and the foil gauge that apply to the concrete model.
The present invention also provides a kind of stress analysis model, including concrete body, setting is used inside the concrete body
In the filler in simulation gap and for the foil gauge group of monitor stress；
Each foil gauge group includes at least three foil gauges, and each foil gauge in the foil gauge group is located at
Same plane, and there is angle between the foil gauge.
Optionally, three foil gauges are arranged in each foil gauge group, and three foil gauges fixations are mounted on soft
On property film；Angle between two adjacent foil gauges is 45 degree.
Optionally, the filler includes the scraps of paper, cardboard and spitball.
Optionally, pit shaft is set along the vertical direction in the concrete body, and the conducting wire of the foil gauge is along the pit shaft
Outer surface stretch out the concrete body.
The present invention provides a kind of disconnected solution stress simulation analysis methods, make concrete mould according to actual formation situation
Type；And the measurement point inside concrete model places foil gauge group, foil gauge group is located at the inside of concrete model, Ke Yizhun
Really measure the stress situation at internal measurement point；Each foil gauge group includes at least three foil gauges, applies to concrete model
After adding external force, according to the measurement numerical value for each foil gauge being in the same plane in foil gauge group and each foil gauge
Relative positional relationship, the stress situation of available measurement point, this method pass through the position of reasonable Arrangement foil gauge, can be accurately complete
It obtains to face the stress situation of concrete model, and thus from which further follows that the stress distribution feelings inside disconnected solution actual formation
Condition.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow chart of disconnected solution stress simulation analysis method provided by the invention；
Fig. 2 is the structural schematic diagram of stress analysis model.
Include: in figure
Concrete body 1, filler 2, foil gauge group 3, pit shaft 4.
Specific embodiment
Core of the invention is to provide a kind of disconnected solution stress simulation analysis method, according to the stress feelings of concrete model
Condition obtains the stress distribution situation inside disconnected solution actual formation, by the position of reasonable Arrangement foil gauge group, obtains accurately
Test result.
In order to make those skilled in the art more fully understand technical solution of the present invention, below in conjunction with attached drawing and specifically
Embodiment, explanation is described in detail to disconnected solution stress simulation analysis method of the invention and stress analysis model.
As shown in Figure 1, being the flow chart of disconnected solution stress simulation analysis method provided by the invention, comprising the following steps:
S1, concrete model is made according to actual formation situation；Disconnected solution actual formation is simulated by concrete model
Internal structure.
S2, the measurement point inside concrete model place foil gauge group；Measurement point, measurement point are selected according to the actual situation
To need the position measured, a measurement point should be at least chosen in concrete model, the quantity of measurement point can be one, two
Or more；Each measurement point is correspondingly arranged a foil gauge group or strain rosette, and each foil gauge group includes at least three strains
Piece, each foil gauge belonged in same foil gauge group are generally aligned in the same plane, and have angle, Ye Jitong between each foil gauge
The stress mornitoring direction of any two foil gauge is not parallel in one foil gauge group.
S3, external force is applied to concrete model；Foil gauge group is put into before concrete is unseasoned, and concrete model is dry
Strong rock sample is formed, internal foil gauge group is fixed as one, forms strong cube, then external force is applied to rock sample.
S4, according to foil gauge become and direction, obtain the stress distribution of measurement point；With loading process, each strain
Piece in different time points on obtain corresponding stress numerical, thus each foil gauge can respectively obtain one group of stress numerical, according to
The setting direction of stress numerical and foil gauge, the stress that available measurement point is born during applying external force, packet
Include numerical values recited and the direction of stress.
Disconnected solution stress simulation analysis method provided by the invention can be accurately complete by the position of reasonable Arrangement foil gauge
The stress situation for obtaining to face each measurement point in the inside of concrete model, since concrete model simulates disconnected solution practically
Thus layer, can from which further follow that the stress distribution situation inside disconnected solution actual formation, judge crack in disconnected solution, crackle and
The borings such as solution cavity structure is to the influence situation for stress.
On the basis of above scheme, the present invention in step S1, according to actual formation situation make concrete model, specifically
The following steps are included:
S11, for the first time casting concrete, form the first model precursor；Concrete slurry is divided into repeatedly injection mold,
It is positioned by filler of the first model precursor to corresponding position.
S12, according to the spatial form inside actual formation, filler is set in the first model precursor；Pass through filler
Simulate the borings structures such as crack, crackle and the solution cavity in disconnected solution, it should be noted that filler can only have part-structure
In the first model precursor, other parts are exposed, wrapped up by second of casting or subsequent casting.
S13, second of casting concrete, wrap up filler, form the second model precursor；Further wrap up filler.
S14, casting concrete is repeated, forms concrete model；Namely step S13 is repeated, it is divided into multiple casting, it is ensured that
The borings structure such as the shape of filler and crack, crackle and solution cavity in disconnected solution keeps farthest consistent；Certainly,
The process for repeating casting not necessarily, can also only pass through moulding by casting twice.
It should be noted that above-mentioned steps S1 and step S2 are not context, two steps can carry out simultaneously；The application
Step S2, measurement point inside concrete model place foil gauge, further comprise:
S21, after being poured concrete for the first time, the first foil gauge group is placed on the first model precursor；It is only poured for the first time
Foil gauge is put into, subsequent casting by a small amount of concrete slurry until the stopping of the first measurement point position before being poured for second
Afterwards, in foil gauge is wrapped in.
S22, second of casting concrete, cover the first foil gauge group, form the second model precursor.
S23, it repeats to place foil gauge group, and is poured concrete；This step is answered only for two groups or more quantity of setting
Become piece group and is only divided into two groups of casting if one group of foil gauge is only arranged.
Preferably, in above-mentioned steps S3, plane parallel where the external force direction and foil gauge that apply to concrete model,
Also even foil gauge is in horizontally disposed, then external force level application；If foil gauge is in being vertically arranged, external force applies vertically；If answering
Piece is obliquely installed, then external force inclination applies, and external force direction is parallel with foil gauge to be calculated convenient for simplifying.If external force direction and strain
Plane where piece is not parallel, is decomposed according to power to calculate, process is cumbersome；The area for being different only in that calculation of external force direction
Not, plane parallel where being not limited only to external force direction and foil gauge.The present invention also provides a kind of stress analysis model, institutes
The structure being related to is identical as structure involved in above-mentioned disconnected solution stress simulation analysis method；The model includes concrete body 1,
Concrete body 1 is cube under normal circumstances, convenient for applying pressure to side；It is arranged inside concrete body 1 for simulating
The filler 2 in gap and foil gauge group 3 for detecting stress, the shape of filler 2 and the crack in disconnected solution, crackle and molten
The borings structure such as hole keeps farthest consistent, simulates the actual conditions of disconnected solution；Setting is multiple in concrete body 1
Measurement point, each measurement point are correspondingly arranged a foil gauge group, and each foil gauge group 3 includes at least three foil gauges, strain
Each foil gauge in piece group 3 is generally aligned in the same plane, and has angle between foil gauge.The conducting wire of each foil gauge stretches out coagulation
Except native ontology 1, it is connected in measuring instrument and measures.
The stress analysis model is applied to above-mentioned disconnected solution stress simulation analysis method, is examined with identical test process
It surveys, identical technical effect may be implemented.The relevant parameters such as elasticity modulus, the Poisson's ratio of stress analysis model and actual formation
The design of the relevant parameters such as elasticity modulus, Poisson's ratio is derived by by similarity criterion calculating.
Preferably, as shown in Fig. 2, being the structural schematic diagram of stress analysis model, three strains are arranged in each foil gauge group 3
Piece, three foil gauge fixations are mounted on fexible film, provide support by fexible film, keep the position of three foil gauges opposite
It is fixed, keep the placement of foil gauge group more convenient；Fexible film can be plastic sheet, the scraps of paper, cement block, masking foil etc..
Preferably, the angle between two adjacent foil gauge stress mornitoring directions is 45 degree, two of them foil gauge phase
Mutually vertical, the angle of another foil gauge and other two foil gauges is 45 degree, and such arrangement is convenient for subsequent calculating, is reduced
Calculation amount.
Preferably, filler 2 includes the scraps of paper, cardboard and spitball in the present invention, and filler 2, which needs to meet, occupies concrete
Entity space, and can be plastically deformed, it is i.e. deformable under low-force, with the true stress feelings of utmostly simulation
Condition.
Further, pit shaft 4 is set in concrete body 1 along the vertical direction in the present invention, and pit shaft 4 is simulated in disconnected solution
The upper surface of concrete body 1 is stretched out on the oil well actually opened up, top, and the middle part of concrete body 1 should be arranged in pit shaft 4；It answers
The conducting wire for becoming piece stretches out concrete body 1 along the outer surface of pit shaft 4, encloses because fracturing device will apply 1 surface of concrete body
Pressure avoids confining pressure from interfering conducting wire from gap extraction wire from the pit shaft 4 at 1 middle part of concrete body.If not applying pressure break
Hydraulic pressure can be not provided with pit shaft 4, and from 1 surface extraction wire of concrete body, and conducting wire is drawn without concentrating.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, this hair
It is bright to be not intended to be limited to the embodiments shown herein, and be to fit to and the principles and novel features disclosed herein phase
Consistent widest scope.
Claims (8)
1. a kind of disconnected solution stress simulation analysis method characterized by comprising
Concrete model is made according to actual formation situation；
Measurement point inside the concrete model places foil gauge group, and each foil gauge group includes at least three strains
Piece, each foil gauge in the foil gauge group are generally aligned in the same plane, and have angle between the foil gauge；
External force is applied to the concrete model；
According to the foil gauge become and direction, obtain the stress distribution of the measurement point.
2. disconnected solution stress simulation analysis method according to claim 1, which is characterized in that described according to actual formation feelings
Condition makes concrete model, comprising:
Casting concrete for the first time forms the first model precursor；
According to the spatial form inside actual formation, filler is set in the first model precursor；
Second of casting concrete, wraps up the filler, forms the second model precursor；
Casting concrete is repeated, the concrete model is formed.
3. disconnected solution stress simulation analysis method according to claim 2, which is characterized in that described in the concrete mould
Measurement point inside type places foil gauge, comprising:
For the first time after casting concrete, the first foil gauge group is placed on the first model precursor；
Second of casting concrete, covers the first foil gauge group；
It repeats to place foil gauge group, and is poured concrete.
4. disconnected solution stress simulation analysis method according to claim 1, which is characterized in that applied to the concrete model
Plane parallel where the external force direction and the foil gauge that add.
5. a kind of stress analysis model, which is characterized in that including concrete body (1), setting inside the concrete body (1)
For simulating the filler (2) in gap and for the foil gauge group (3) of monitor stress；
Each foil gauge group (3) includes at least three foil gauges, each foil gauge position in the foil gauge group (3)
In same plane, and there is angle between the foil gauge.
6. stress analysis model according to claim 5, which is characterized in that each foil gauge group (3) is arranged three
The foil gauge, three foil gauge fixations are mounted on fexible film；Angle between two adjacent foil gauges
It is 45 degree.
7. stress analysis model according to claim 6, which is characterized in that the filler (2) include the scraps of paper, cardboard and
Spitball.
8. according to the described in any item stress analysis models of claim 5 to 7, which is characterized in that in the concrete body (1)
Pit shaft (4) are set along the vertical direction, the conducting wire of the foil gauge stretches out the concrete body along the outer surface of the pit shaft (4)
(1)。
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| CN201811536281.7A CN109635447B (en) | 2018-12-14 | 2018-12-14 | Broken solution stress simulation analysis method and stress analysis device |
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| CN201811536281.7A CN109635447B (en) | 2018-12-14 | 2018-12-14 | Broken solution stress simulation analysis method and stress analysis device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010049968A1 (en) * | 2000-05-08 | 2001-12-13 | Korea Advanced Institute Of Science And Technology | Apparatus for and method of measuring thermal stress of concrete structure |
| CN103257153A (en) * | 2013-05-29 | 2013-08-21 | 中建八局第一建设有限公司青岛分公司 | Method for monitoring stress change state of compensating concrete expansion reinforcing band |
| CN104749032A (en) * | 2015-04-16 | 2015-07-01 | 湖南大学 | Testing device for internal stress of soil-rock mixture or concrete |
| CN106771102A (en) * | 2017-01-25 | 2017-05-31 | 厦门理工学院 | The measuring system and measuring method of Non-load Concrete internal stress in concrete structure |
| CN107764492A (en) * | 2017-09-30 | 2018-03-06 | 中国地质大学（武汉） | A kind of model test method and system of research framework structural vibration response feature |
-
2018
- 2018-12-14 CN CN201811536281.7A patent/CN109635447B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010049968A1 (en) * | 2000-05-08 | 2001-12-13 | Korea Advanced Institute Of Science And Technology | Apparatus for and method of measuring thermal stress of concrete structure |
| CN103257153A (en) * | 2013-05-29 | 2013-08-21 | 中建八局第一建设有限公司青岛分公司 | Method for monitoring stress change state of compensating concrete expansion reinforcing band |
| CN104749032A (en) * | 2015-04-16 | 2015-07-01 | 湖南大学 | Testing device for internal stress of soil-rock mixture or concrete |
| CN106771102A (en) * | 2017-01-25 | 2017-05-31 | 厦门理工学院 | The measuring system and measuring method of Non-load Concrete internal stress in concrete structure |
| CN107764492A (en) * | 2017-09-30 | 2018-03-06 | 中国地质大学（武汉） | A kind of model test method and system of research framework structural vibration response feature |
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