CN102557551B - Fluid-solid coupling similar material for model test and preparation method for material - Google Patents
Fluid-solid coupling similar material for model test and preparation method for material Download PDFInfo
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- CN102557551B CN102557551B CN 201110427064 CN201110427064A CN102557551B CN 102557551 B CN102557551 B CN 102557551B CN 201110427064 CN201110427064 CN 201110427064 CN 201110427064 A CN201110427064 A CN 201110427064A CN 102557551 B CN102557551 B CN 102557551B
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Abstract
The invention discloses a fluid-solid coupling similar material for a model test. The material consists of the following raw materials in part by weight: 1 part of standard sand, 0.05 to 0.15 part of barite powder, 0.05 to 0.15 part of talcpowder, 0.05 to 0.125 part of cement, 0.04 to 0.12 part of vaseline, 0 to 0.15 part of silicone oil and 0.05 to 0.1 part of mixing water. Hydraulic cement and non-hydrophilic vaseline are taken as cementing agents in the material, so that the problem that the similar material is softened and disintegrated when meeting water is solved, and the strength and elastic modulus of the material can be adjusted in a wide range; the silicone oil is taken as an adjuster, so that the water physical indexes such as permeability and the like of the material can be adjusted under the condition that the mechanical indexes of the material are basically not influenced, and the physical and mechanical properties and water physical properties of the material can meet the test requirement; and compared with previous research, the invention has the advantages that: the intercoupling effect of a rock body and water is truly simulated, and the obtained geomechanical similar model test research result is more accurate.
Description
Technical field
Admittedly the present invention relates to a kind of stream for the model trial-analog material and preparation method thereof that is coupled, belong to materials science field.
Background technology
At present, a lot of scholars study the optimization of underground works design and constructional method in a large number by geomechanical model test, carry out the exploration of construction process mechanics rule.But present underground project model test exists significantly not enough, and analog material of the prior art only considers that mostly physical mechanics is similar, and most analog materials can be met the water disintegration, Gu can't be applied in stream-coupling model test.Admittedly for the paraffin class of the minority analog material that flow-is coupled, also just pay attention to solving the problem that material is met the water disintegration, and very high to the temperature condition requirement, the adjusting of mechanical property and the water rational faculty has dependency, is difficult to guarantee that physico-mechanical properties and the water rational faculty satisfy test requirements document simultaneously.So the seepage simulation under the true hydraulic condition is not often done in the research in past, only adopt flexible loading simulation water pressure, can not reflect the practical situation under rock mass and the water coupling, admittedly stream that neither be real-analog simulation is coupled.
Summary of the invention
At above-mentioned prior art, admittedly the invention provides a kind of stream for the model trial-analog material that is coupled, and its preparation method is provided.Gu stream of the present invention-coupling model test analog material adopts not hydrophilic gelling material, material is met the not softening disintegration of water, satisfies similar two conditions with perviousness of solid deformation simultaneously, is not subjected to the temperature and humidity condition influence.
The present invention is achieved by the following technical solutions:
Admittedly a kind of stream for model trial-analog material is coupled, formed by the raw material of following weight part: 1 part of standard sand, 0.05～0.15 part of ground barium sulfate, 0.05～0.15 part of talcum powder, 0.05～0.125 part of cement, 0.04～0.12 part in Vaseline, 0～0.15 part of silicone oil, 0.05～0.1 part of mixing water.
Preferably, formed by the raw material of following weight part: 1 part of standard sand, 0.085 part of ground barium sulfate, 0.085 part of talcum powder, 0.065 part of cement, 0.075 part in Vaseline, 0.05 part of silicone oil, 0.1 part of mixing water.
The particle diameter of described standard sand is less than 5mm.
Described ground barium sulfate fineness is 625 orders.
Talcous fineness is 1250 orders.
Described cement is that ultimate compression strength is the high-quality white portland cement of 32.5MPa.
Described Vaseline is the nontoxic medical grade Vaseline of white.
Described silicone oil is the methyl-silicone oil of viscosity 1500.
Affiliated mixing water is conventional water, plays mix.
Admittedly the preparation method of described stream for the model trial-analog material that is coupled, step is as follows:
(1) strictness takes by weighing standard sand, ground barium sulfate, talcum powder, cement, Vaseline and silicone oil in proportion;
(2) standard sand, ground barium sulfate, talcum powder and four kinds of fine materials of cement are mixed and stir;
(3) add mixing water, fully stir;
(4) add conditioning agent silicone oil, mix thoroughly;
(5) Vaseline is heated to 45 ℃～60 ℃, makes it molten for liquid;
(6) with liquid Vaseline and the resulting material mixing of step (4), and fully stir;
(7) cool off 5～10min under the room temperature, admittedly namely get for model trial stream-analog material is coupled.
Admittedly the stream for model trial of the present invention-analog material is coupled, the cement of the employing hydraulicity and non-hydrophilic Vaseline are as jointing compound, solved the problem of analog material chance water softening disintegration, the intensity of material and Young's modulus can be regulated in a big way; Adopt silicone oil as conditioning agent, can under the situation of the mechanical index that does not influence material substantially, regulate the rational index of water such as perviousness of material, guarantee that physico-mechanical properties and the water rational faculty of material can both satisfy test requirements document.Material significant parameter scope such as table 1, the stress-strain(ed) curve under single shaft resistance to compression condition such as accompanying drawing 1.
Table 1
Admittedly the stream for model trial of the present invention-analog material is coupled, admittedly studied technical scheme and the preparation method of the stream-analog material that is coupled that can be used for model trial, solve traditional analog material and met the problem of water softening disintegration, be difficult to independent adjusting admittedly improved conventional flow-be coupled analog material physico-mechanical properties and the water rational faculty, the defective of the rational analog simulation degree of water difference.Be applied in the model trial admittedly should flow-be coupled analog material, compared with forefathers research, real simulation the effect of intercoupling of rock mass and water, the geomechanics layer during similar model test achievement in research that draws is more accurate.
Selection standard sand of the present invention, ground barium sulfate, talcum powder, cement, Vaseline, silicone oil are as moiety, wherein, cement is as hydraulic binding agent, guarantee that softening disintegration does not take place material under the effect of water, simultaneously, cement is also apparent in view to the perviousness influence of material, and the intensity of material and permeability coefficient can be regulated in the larger context; Vaseline is as the plasticity jointing compound, mainly is intensity and the Young's modulus of regulating analog material, and along with the increase of content, its regulating effect to intensity and Young's modulus is opposite with cement, guaranteed that like this Mechanical Properties of Materials can effectively regulate and control; Silicone oil is as conditioning agent, guaranteed the non-wetting ability of material, mixing water in the material can fully be reacted with cement, reduce material to the requirement of curing condition, and silicone oil can be implemented on the basis that does not influence the mechaanical property of materials substantially, the rational index of the water of material is regulated, improved the analog simulation degree of the rational aspect of material water greatly, admittedly expanded the range of application of this stream-analog material that is coupled.In addition, regulate the proportion of ground barium sulfate and talcum powder and standard sand, internal friction angle and the cohesion that can regulate material.
Admittedly the technical scheme of the stream-analog material that is coupled in the model trial that the present invention proposes has the following advantages:
1, can realize that softening disintegration does not take place analog material under the effect of water, for the coupling of real simulation rock mass and water provides possible;
2, can under the prerequisite of the bulk property that does not influence material, regulate and control the single index of the rational index of water and mechanical property separately by regulating material mixture ratio, rock mass different classes of for simulating, different permeability coefficients provide may;
3, can in a big way, regulate intensity and the perviousness of material, all kinds of rock mass that can simulate intermediate intensity.
4, the character to material has realized " major control is oppositely regulated ", has solved the dependency of composition variation to material properties influence, has improved the analog simulation degree of material greatly.
Description of drawings
Fig. 1 is the Complete Stress-Strain Curve figure of material under single shaft resistance to compression condition of embodiment 1.
Embodiment
The present invention is further illustrated below in conjunction with embodiment.
The used standard sand particle diameter of embodiments of the invention is less than 5mm, and grating is even, the ground barium sulfate fineness is 625 orders, talcous fineness is 1250 orders, cement is that ultimate compression strength is the high-quality white portland cement of 32.5MPa, Vaseline is the nontoxic medical grade Vaseline of white, and silicone oil is the methyl-silicone oil of viscosity 1500.
Admittedly embodiment 1 is for the preparation of the stream in the model trial-analog material is coupled
Prescription is: standard sand 320g, ground barium sulfate 32g, talcum powder 32g, cement 20.8g, Vaseline 24g, silicone oil 16g, mixing water 32g.
Preparation process is:
1) strictness takes by weighing standard sand, ground barium sulfate, talcum powder, cement, Vaseline, silicone oil and mixing water in proportion;
2) sand, ground barium sulfate, talcum powder and four kinds of fine materials of cement are mixed and stir;
3) add mixing water, fully stir;
4) add conditioning agent silicone oil, mix thoroughly;
5) Vaseline is heated to 50 ℃, makes it molten for liquid;
6) with liquid Vaseline and material mixing, and fully stir;
7) cool off 10min under the room temperature, namely.
The correlation parameter of this proportioning: severe 2.14g/cm
3, ultimate compression strength 0.61MPa, tensile strength 0.058MPa, Young's modulus 37MPa, permeability coefficient 5.36 * 10
-6Cm/s.
Admittedly embodiment 2 is for the preparation of the stream in the model trial-analog material is coupled
Prescription is for being: standard sand 320g, ground barium sulfate 32g, talcum powder 32g, cement 20.8g, Vaseline 24g, silicone oil 0, mixing water 24g.
Preparation process is:
1) strictness takes by weighing standard sand, ground barium sulfate, talcum powder, cement, Vaseline and mixing water in proportion;
2) sand, ground barium sulfate, talcum powder and four kinds of fine materials of cement are mixed and stir;
3) add mixing water, fully stir;
4) Vaseline is heated to 50 ℃, makes it molten for liquid;
5) with liquid Vaseline and material mixing, and fully stir;
6) cool off 10min under the room temperature, namely.
The correlation parameter of this proportioning: severe 1.92g/cm
3, ultimate compression strength 0.44MPa, tensile strength 0.042MPa, Young's modulus 13MPa, permeability coefficient 8.61 * 10
-5Cm/s.
Admittedly embodiment 3 is for the preparation of the stream in the model trial-analog material is coupled
Prescription is: standard sand 320g, ground barium sulfate 32g, talcum powder 32g, cement 40g, Vaseline 38.4g, silicone oil 12.8g, mixing water 32g.
Preparation process is:
1) strictness takes by weighing standard sand, ground barium sulfate, talcum powder, cement, Vaseline, silicone oil and mixing water in proportion;
2) sand, ground barium sulfate, talcum powder and four kinds of fine materials of cement are mixed and stir;
3) add mixing water, fully stir;
4) add conditioning agent silicone oil, mix thoroughly;
5) Vaseline is heated to 50 ℃, makes it molten for liquid;
6) with liquid Vaseline and material mixing, and fully stir;
7) cool off 10min under the room temperature, namely.
The correlation parameter of this proportioning: severe 2.12g/cm
3, ultimate compression strength 0.92MPa, tensile strength 0.090MPa, Young's modulus 116MPa, permeability coefficient 3.66 * 10
-7Cm/s.
Admittedly embodiment 4 is for the preparation of the stream in the model trial-analog material is coupled
Prescription is: standard sand 320g, ground barium sulfate 16g, talcum powder 48g, cement 20.8g, Vaseline 24g, silicone oil 16g, mixing water 32g.
Preparation process is:
1) strictness takes by weighing standard sand, ground barium sulfate, talcum powder, cement, Vaseline, silicone oil and mixing water in proportion;
2) sand, ground barium sulfate, talcum powder and four kinds of fine materials of cement are mixed and stir;
3) add mixing water, fully stir;
4) add conditioning agent silicone oil, mix thoroughly;
5) Vaseline is heated to 50 ℃, makes it molten for liquid;
6) with liquid Vaseline and material mixing, and fully stir;
7) cool off 10min under the room temperature, namely.
The correlation parameter of this proportioning: severe 2.03g/cm
3, ultimate compression strength 0.59MPa, tensile strength 0.058MPa, Young's modulus 37MPa, permeability coefficient 5.58 * 10
-6Cm/s.
Admittedly embodiment 5 is for the preparation of the stream in the model trial-analog material is coupled
Prescription is: standard sand 320g, ground barium sulfate 48g, talcum powder 16g, cement 20.8g, Vaseline 24g, silicone oil 16g, mixing water 32g.
Preparation process is:
1) strictness takes by weighing standard sand, ground barium sulfate, talcum powder, cement, Vaseline, silicone oil and mixing water in proportion;
2) sand, ground barium sulfate, talcum powder and four kinds of fine materials of cement are mixed and stir;
3) add mixing water, fully stir;
4) add conditioning agent silicone oil, mix thoroughly;
5) Vaseline is heated to 50 ℃, makes it molten for liquid;
6) with liquid Vaseline and material mixing, and fully stir;
7) cool off 10min under the room temperature, namely.
The correlation parameter of this proportioning: severe 2.19g/cm
3, ultimate compression strength 0.60MPa, tensile strength 0.058MPa, Young's modulus 38MPa, permeability coefficient 5.19 * 10
-6Cm/s.
Though above-mentionedly in conjunction with the embodiments the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (9)
1. admittedly the stream-analog material that is coupled that is used for model trial is characterized in that: be made up of the raw material of following weight part: mark
1 part in accurate sand, 0.05～0.15 part of ground barium sulfate, 0.05～0.15 part of talcum powder, 0.05～0.125 part of cement, 0.04～0.12 part in Vaseline, 0～0.15 part of silicone oil, 0.05～0.1 part of mixing water.
2. admittedly the stream for model trial according to claim 1-analog material is coupled, it is characterized in that: formed by the raw material of following weight part: 1 part of standard sand, 0.085 part of ground barium sulfate, 0.085 part of talcum powder, 0.065 part of cement, 0.075 part in Vaseline, 0.05 part of silicone oil, 0.1 part of mixing water.
3. admittedly the stream for the model trial according to claim 1 and 2-analog material that is coupled, it is characterized in that: the particle diameter of described standard sand is less than 5mm.
4. admittedly the stream for the model trial according to claim 1 and 2-analog material that is coupled, it is characterized in that: described ground barium sulfate fineness is 625 orders.
5. admittedly the stream for the model trial according to claim 1 and 2-analog material that is coupled, it is characterized in that: talcous fineness is 1250 orders.
6. admittedly the stream for the model trial according to claim 1 and 2-analog material that is coupled, it is characterized in that: described cement is that ultimate compression strength is the white portland cement of 32.5MPa.
7. admittedly the stream for the model trial according to claim 1 and 2-analog material that is coupled is characterized in that: described Vaseline is the nontoxic medical grade Vaseline of white.
8. admittedly the stream for the model trial according to claim 1 and 2-analog material that is coupled, it is characterized in that: described silicone oil is the methyl-silicone oil of viscosity 1500.
9. admittedly the preparation method of each described stream for the model trial-analog material that is coupled in the claim 1～8, it is characterized in that: step is as follows:
(1) strictness takes by weighing standard sand, ground barium sulfate, talcum powder, cement, Vaseline and silicone oil in proportion;
(2) standard sand, ground barium sulfate, talcum powder and four kinds of fine materials of cement are mixed and stir;
(3) add mixing water, fully stir;
(4) add silicone oil, mix thoroughly;
(5) Vaseline is heated to 45 ℃～60 ℃, makes it molten for liquid;
(6) with liquid Vaseline and the resulting material mixing of step (4), and fully stir;
(7) cool off 5～10min under the room temperature, admittedly namely get for model trial stream-analog material is coupled.
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| CN103183495B (en) * | 2013-03-28 | 2015-03-25 | 山东大学 | Fault analog simulation material used for fluid-solid coupling model test and preparation method thereof |
| CN103698171B (en) * | 2013-11-12 | 2017-07-28 | 山东科技大学 | The crack evolution test method of floor strata solid＆liquid couple material |
| CN103604673B (en) * | 2013-11-22 | 2016-08-31 | 山东大学 | Model test adjustable fluid structurecoupling analog material and preparation method thereof |
| CN106186840B (en) * | 2016-07-22 | 2018-10-26 | 同济大学 | A kind of test model clay and preparation method thereof simulated under rich water wall rock condition |
| CN106542792B (en) * | 2016-11-02 | 2018-10-09 | 北京科技大学 | One kind is for mine engineering country rock similar materials under the high stress environment of deep |
| CN107101867B (en) * | 2017-05-25 | 2020-07-31 | 山东大学 | Coal bed karst collapse column water inrush model test analog simulation material and preparation method thereof |
| CN112028555B (en) * | 2020-09-14 | 2022-10-18 | 济南海马机械设计有限公司 | Fluid-solid coupling similar material and preparation method thereof |
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