CN203758811U - Homogeneous rock model with uniaxial compressive strength of 20-30MPa - Google Patents
Homogeneous rock model with uniaxial compressive strength of 20-30MPa Download PDFInfo
- Publication number
- CN203758811U CN203758811U CN201420073139.4U CN201420073139U CN203758811U CN 203758811 U CN203758811 U CN 203758811U CN 201420073139 U CN201420073139 U CN 201420073139U CN 203758811 U CN203758811 U CN 203758811U
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- China
- Prior art keywords
- model
- homogeneous
- homogeneous rock
- rock
- compressive strength
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000011435 rock Substances 0.000 title claims abstract description 35
- 239000000463 material Substances 0.000 abstract description 25
- 230000006378 damage Effects 0.000 abstract description 5
- 230000000704 physical effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 229910052602 gypsum Inorganic materials 0.000 description 5
- 239000010440 gypsum Substances 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 235000019353 potassium silicate Nutrition 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 244000144730 Amygdalus persica Species 0.000 description 2
- 235000006040 Prunus persica var persica Nutrition 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model belongs to the technical field of simulating compression resistance of homogeneous rock models and discloses a homogeneous rock model with uniaxial compressive strength of 20-30MPa. The model comprises an upper model body of a homogeneous rock, a die assembly layer, a lower model body of the homogeneous rock and a cavity, wherein the upper model body of the homogeneous rock is bonded with the lower model body of the homogeneous rock to form a homogeneous rock model body, and the cylindrical cavity is arranged in the center of the homogeneous rock model body. The model provided by the utility model absorbs free moisture in the hardening process to be naturally dried without being manually dried, so that the model is suitable for bonding in a large area. Damage cracks of upper and lower semi-models can be connected with each other by adopting a crispy die assembly and a model material same in physical property, thereby guaranteeing that the damage shapes of the upper and lower semi-models are same.
Description
technical field
The utility model belongs to simulation homogeneous petrophysical model pressure resistant technology field, relates in particular to a kind of uniaxial compressive strength 20-30MPa homogeneous petrophysical model
.
Background technology
In the time carrying out model test, need to be on model block intermediate surface placement sensor, therefore, when building model, model need be divided into upper and lower two-layer building, in lower floor, model upper surface arranges after sensor, by these two half model matched moulds, bond by cementing agent as a whole again.In geomechanical model test, requirement to cementing agent is: have certain cohesive strength, the physical and mechanical parameters such as compressive strength and bonded cast material are close, at room temperature stable performance after solidifying, the fracture line of model can be through bonding, ensure the similar of above and below destruction form, conventional cementing agent has at present:
(1) cementing agent taking epoxy resin as Main Ingredients and Appearance
The advantage of epoxy adhesive is that it does not contain free moisture, can solidify at normal temperatures, and without baking, its mechanical property can adopt different proportionings to change.But this adhesive strength is high, in the time that cast material intensity is lower, the fracture line Chang Buneng in model, through adhesive surface, causes above and below to destroy the difference of form.
(2) starch-gypsum binder
The advantage of this material is that adhesive surface mechanical property is close with cast material performance, and shortcoming is due to the existence that has free moisture, needs baking, when large area bonding, is difficult for dry.
(3) peach gum-gypsum binder
The advantage of this material is identical with starch-gypsum binder.
The strength of materials that this model test is chosen is low, can not select epoxide resin type cementing agent; And adhesive surface is large, do not possess baking drying condition, can not choose starch-gypsum or peach gum-gypsum binder.
Summary of the invention
For overcoming the deficiencies in the prior art, the purpose of this utility model is to provide a kind of uniaxial compressive strength 20-30MPa homogeneous petrophysical model.
For achieving the above object, the utility model adopts following technical scheme:
A kind of uniaxial compressive strength 20-30MPa homogeneous petrophysical model, comprise: homogeneous rock upper strata model, matched moulds layer, homogeneous rock lower floor's model and cavern, described homogeneous rock upper strata model forms homogeneous petrophysical model body by matched moulds layer and the model bonding connection of homogeneous rock lower floor, and described homogeneous petrophysical model body center is provided with the cavern of circular cylindrical cavity.
Owing to adopting technical scheme as above, the utlity model has following superiority:
A kind of uniaxial compressive strength 20-30MPa homogeneous petrophysical model, the advantage of matched moulds material is:
A. matched moulds material is hydraulic material, absorbs free moisture and natural drying in hardening process, without oven dry, is suitable for large area bonding.
B. density and compressive strength and cast material is close.After measured, the density of matched moulds material is 1.9 × 10
3kg/m
3, the density of cast material is 1.8 × 10
3kg/m
3;
The uniaxial compressive strength of matched moulds material is 1.9MPa, and the uniaxial compressive strength of cast material is 2.0MPa.
C. physical property is identical.Matched moulds material is hard brittle material, and cast material is also hard brittle material, and both physical propertys are identical.
Above-mentioned two advantages can guarantee that the destruction crack of upper and lower half model can connect with each other, and ensures the destruction homomorphosis of upper and lower half model.
Brief description of the drawings
Figure l is the shaping schematic view of homogeneous rock lower floor model;
Fig. 2 is the shaping schematic view that homogeneous rock lower floor model upper surface is placed plastic board;
Fig. 3 is the shaping schematic view of homogeneous rock upper strata model;
Fig. 4 is the structural representation of homogeneous petrophysical model.
Embodiment
By reference to the accompanying drawings and embodiment, the utility model is further elaborated.
As shown in Figure 1,2,3, 4, a kind of uniaxial compressive strength 20-30MPa homogeneous petrophysical model, comprise: homogeneous rock upper strata model 1, matched moulds layer 3, homogeneous rock lower floor model 2 and cavern 4, described homogeneous rock upper strata model 1 forms homogeneous petrophysical model body by matched moulds layer 3 and 2 bonding connections of homogeneous rock lower floor model, and described homogeneous petrophysical model body center is provided with the cavern 4 of circular cylindrical cavity.
The preparation of uniaxial compressive strength 20-30MPa homogeneous petrophysical model, adopt homogeneous rock upper strata model 1 and homogeneous rock lower floor model 2 to be bonded into homogeneous petrophysical model body by matched moulds layer 3, and on the matched moulds layer of excavation cavern, homogeneous petrophysical model body center, be distributed with the sensor of single shaft compression test, its concrete steps are as follows:
1, matched moulds layer 3 material first processed, matched moulds material selection: cement, lightweight CaCO
3, water glass and water potpourri as matched moulds material;
Its weight proportion is: cement: lightweight CaCO
3: water glass: the potpourri of water=(0.8-1.2): (0.08-0.12): (0.06-0.08:(0.6-0.8);
Wherein the effect of cement is to provide adhesive surface intensity, and cement adopts Portland cement, and label is P.O.32.5;
Lightweight CaCO
3effect be to improve the workability of composite material, increase its mobility, light caco3 adopts the micro-powder lime carbonate of 1250 object;
The effect of water glass has been early strength function, guarantees that matched moulds material is under 20 degrees Celsius of natural curing conditions of room temperature, and its compressive strength reaches 1.9MPa pressure; Water glass order number adopts 2.6-2.8, and density is 1.3-1.4g/cm
3water glass for building;
2, the preparation method of homogeneous petrophysical model:
(1) homogeneous rock processed lower floor model 2, assembles lower floor's steel mold, then fills homogeneous rock mortar therein, and building, solidify to form lower floor's model, sees Fig. 1.
(2) intermediate surface moulding, after lower floor's model building completes, places on its surface the plastic board 5 that a thickness is 1.0mm ± 0.2mm;
This plastic plate has two effects: the one, and while avoiding building upper strata model, two models are bonded on instrument, and the 2nd, form smooth aspect, in order to placement sensor; See Fig. 2.
(3) homogeneous rock processed upper strata model 1, has assembled upper strata steel mold, is placed in lower floor's steel mold and with it and links together, and then building upper strata model, is shown in Fig. 3.
(4) placement sensor on intermediate surface,, slings homogeneous rock upper strata model to place on one side after 28 days until model maintenance, starts the plastic board on homogeneous rock lower floor's model surface, then placement sensor;
(5) then homogeneous rock upper strata model 1 and homogeneous rock lower floor model 2 are carried out to matched moulds, matched moulds material is poured over to the homogeneous rock lower floor model upper surface that is furnished with sensor, and strikes off, then homogeneous rock upper strata model 1 is placed;
(6) cavern 4 of excavation test, treats matched moulds material maintenance 2 days, reaches after intensity, excavates the cavern of circular cylindrical cavity test in model; See Fig. 4;
Treat that cavern excavation is complete, complete the preparation that is placed on uniaxial compressive strength 20MPa-30MPa homogeneous petrophysical model body of testing on pressing machine.
Claims (1)
1. uniaxial compressive strength 20-30MPa homogeneous petrophysical model, it is characterized in that: comprising: homogeneous rock upper strata model (1), matched moulds layer (3), homogeneous rock lower floor model (2) and cavern (4), described homogeneous rock upper strata model (1) forms homogeneous petrophysical model body by matched moulds layer (3) and homogeneous rock lower floor model (2) bonding connection, and described homogeneous petrophysical model body center is provided with the cavern (4) of circular cylindrical cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420073139.4U CN203758811U (en) | 2014-02-20 | 2014-02-20 | Homogeneous rock model with uniaxial compressive strength of 20-30MPa |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420073139.4U CN203758811U (en) | 2014-02-20 | 2014-02-20 | Homogeneous rock model with uniaxial compressive strength of 20-30MPa |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203758811U true CN203758811U (en) | 2014-08-06 |
Family
ID=51254067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420073139.4U Expired - Fee Related CN203758811U (en) | 2014-02-20 | 2014-02-20 | Homogeneous rock model with uniaxial compressive strength of 20-30MPa |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203758811U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852357A (en) * | 2014-02-20 | 2014-06-11 | 中国人民解放军总参谋部工程兵科研三所 | Homogeneous rock model with uniaxial compressive strength of 20-30 MPa, and preparation method |
| CN105437394A (en) * | 2015-12-21 | 2016-03-30 | 河南理工大学 | Tightly holding device in standard sample machining process |
-
2014
- 2014-02-20 CN CN201420073139.4U patent/CN203758811U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852357A (en) * | 2014-02-20 | 2014-06-11 | 中国人民解放军总参谋部工程兵科研三所 | Homogeneous rock model with uniaxial compressive strength of 20-30 MPa, and preparation method |
| CN103852357B (en) * | 2014-02-20 | 2016-08-03 | 中国人民解放军总参谋部工程兵科研三所 | Uniaxial compressive strength 20 30MPa homogenizing petrophysical model and preparation method |
| CN105437394A (en) * | 2015-12-21 | 2016-03-30 | 河南理工大学 | Tightly holding device in standard sample machining process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |