CN107101867A - Coal seam Genesis of Karst Subsided Column gushing water model test similar materials and preparation method - Google Patents
Coal seam Genesis of Karst Subsided Column gushing water model test similar materials and preparation method Download PDFInfo
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- CN107101867A CN107101867A CN201710379327.8A CN201710379327A CN107101867A CN 107101867 A CN107101867 A CN 107101867A CN 201710379327 A CN201710379327 A CN 201710379327A CN 107101867 A CN107101867 A CN 107101867A
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- coal seam
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
- G01N2001/386—Other diluting or mixing processes
Abstract
The invention discloses a kind of coal seam Genesis of Karst Subsided Column gushing water model test similar materials and preparation method thereof, it is made up of the component of following parts by weight：0.13 part of 1 part of quartz sand, 0.09 part of powder of lacquer putty for use on, 0.10 part of scheelite crystalline flour, vaseline or petrolatum, 0.09 part of mixing water, 0.02 part of carbon black.The present invention is used to simulate development pattern formula water inrush features under the conditions of different mechanical characteristics, can realize that the excavation in high mechanics parameter subsides gushing water, can simulate again mechanics parameter it is relatively low when development pattern infiltration and disturbance gushing water characteristic；The Genesis of Karst Subsided Column coal seam of larger strength range can be simulated in interior intensity, permeability and the stability for adjusting material in a big way.Present invention also offers its proportioning and preparation method.
Description
Technical field
The present invention relates to a kind of coal seam Genesis of Karst Subsided Column gushing water model test similar materials and preparation method thereof.
Background technology
Coal seam Genesis of Karst Subsided Column is a kind of special geology phenomenon for being found in North China of China.Genesis of Karst Subsided Column is deposited
The normal preservation in coal seam is being not only broken up, is more there is the very big water damage threat that water guide karst collapse col umn is shaft production.Genesis of Karst Subsided Column
Belong to latent vertical construction, its caused gushing water have it is disguised, sudden and the features such as have natural link with karst water, to coal
Ore deposit is kept the safety in production and local people's life is very harmful.
Geomechanical model test can simulate the deformation of the surrounding rock in tunnel destructive characteristics under a variety of geological conditions, mining conditions,
Physics, the Mechanics Phenomenon of system are studied in reflection directly perceived, make up the deficiency of theory analysis and field test.Meeting the principle of similitude
On the premise of, more accurately live scheme implementation result can in advance be tested, efficiently avoid after engineering construction
The safety and economy problem caused because scheme is unreasonable.Model test have its unique superiority, at home and abroad ground with
Mining engineering circle is widely applied, by substantial amounts of geomechanical model test come Study of The Underground engineering design and construction side
The optimization of method, carries out the exploration of construction process mechanics rule, as the necessary means for carrying out underground engineering research
But present underground project model test has many clearly disadvantageous, the research and development especially in analog material
Analog simulation in terms of aspect, most of only emphasis physical characteristics, few mechanical characteristic for considering material.Although there is a small number of phases
Fluid-body interaction is considered like experiment, but is difficult to the mechanical characteristic of soft rock under simulation Complicated Geologic Condition in model test,
Experimental result is caused not to be consistent with actual conditions.Research and development to the country rock analog material in the case of high mechanics parameter are relatively common,
But the proportioning of the coal seam analog material under low-stress is but very rare.For the large-scale Genesis of Karst Subsided Column delaying water bursting in coal seam
Few model tests can be simulated successfully, can not also obtain corresponding achievement in research.
The content of the invention
The present invention is in order to solve the above problems, it is proposed that a kind of coal seam Genesis of Karst Subsided Column gushing water model test analog simulation material
Material and preparation method thereof, the large-scale Genesis of Karst Subsided Column delaying water bursting model test in the coal seam that is particularly suitable for use in, the present invention can be in larger model
Intensity, permeability and the stability of interior regulation material are enclosed, the Genesis of Karst Subsided Column coal seam of larger strength range can be simulated.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of coal seam Genesis of Karst Subsided Column gushing water model test similar materials, are made up of the component of following parts by weight：Stone
0.13 part of 1 part of sand, 0.09 part of powder of lacquer putty for use on, 0.10 part of scheelite crystalline flour, vaseline or petrolatum, 0.09 part of mixing water, carbon black
0.02 part.
The particle diameter of the quartz sand is less than 9mm, and level is with uniform.
The fineness of the land plaster is 400-600 mesh
The fineness of the talcum powder is 800-1400 mesh.
The mixing water is running water.
The preparation method of above-mentioned analog material, comprises the following steps：
1) first according to engineering geological condition Genesis of Karst Subsided Column coal seam physical and mechanical parameter to be simulated, according to what is determined
Proportioning weighs quartz sand, powder of lacquer putty for use on, scheelite crystalline flour, vaseline and mixing water；
2) quartz sand, powder of lacquer putty for use on, three kinds of fine materials of scheelite crystalline flour are mixed and stirred for uniformly, after standing, weeded out larger
Cement particle, add load weighted mixing water, be sufficiently stirred for；
3) vaseline is heated to 50 DEG C~65 DEG C, melts it for liquid；
4) by liquid vaseline and step 3) resulting materials mix, and add carbon black, and be sufficiently stirred for, cool down, obtain at room temperature
To the coal seam analog material for model test.
The operation principle of the present invention：
Using powder of lacquer putty for use on and quartz sand as aggregate, material severe is adjusted；Using scheelite crystalline flour as cementing agent, carbon black is used as dyeing
Agent, realizes the simulation to coal seam characteristic；Using vaseline as waterproofing agent, the permeability of material is adjusted, while also serving as the modeling of material
Property cementing agent, for simulating the development pattern formula water inrush features under the conditions of different mechanical characteristics, can realize in high mechanics ginseng
Number when excavation subside gushing water, can simulate again mechanics parameter it is relatively low when development pattern infiltration and disturbance gushing water characteristic.
Compared with prior art, beneficial effects of the present invention are：
(1) present invention can realize that simulating development pattern in the case where keeping analog material to have certain intensity is oozing
The fluid-wall interaction characteristic of stream effect；
(2) present invention can be on the premise of the bulk property of material not be influenceed, and the geological state according to actual coal seam is designed
Test model；
(3) present invention is regulating and controlling water reason characteristic and while mechanical characteristic, can simulate various classifications and infiltration coefficient
Karst collapse col umn coal seam, simulates the mechanics and seepage characteristic that can be deduced over time；
(4) stream of the invention that karst collapse col umn coal seam can be preferably simulated in the case where physical and mechanical parameter is relatively low consolidates-coupling
Cooperation is used；
(5) present invention is applied widely, can be used for simulating the coal seam Genesis of Karst Subsided Column under the conditions of different mechanical characteristics
Formula water inrush features, can realize the excavation Water Inrush in high mechanics parameter, can simulate again mechanics parameter it is relatively low when coal seam
Karst collapse col umn seeps water and disturbance gushing water characteristic；Can in a big way it is interior regulation material intensity, permeability and stability, can simulate compared with
The karst collapse col umn coal seam of big strength range.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not constitute the improper restriction to the application.
Fig. 1 is stress-strain curve diagram of the sample of material under the conditions of uniaxial compressive.
Embodiment：
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
It is most of only to focus on thing in terms of the research and development that there is analog material in the prior art as background technology is introduced
The analog simulation in terms of characteristic is managed, few mechanical characteristic in view of material is not enough, in order to solve technical problem as above, this Shen
It please propose a kind of coal seam similar materials of the large-scale Genesis of Karst Subsided Column delaying water bursting model test in coal seam.
It is made up of the component of following parts by weight：1 part of quartz sand, 0.09 part of powder of lacquer putty for use on, 0.10 part of scheelite crystalline flour, vaseline
0.13 part of (petrolatum), 0.09 part of mixing water, 0.02 part of carbon black.
The particle diameter of quartz sand is less than 9mm, and level is with uniform.
The fineness of land plaster is 400-600 mesh
The fineness of talcum powder is 800-1400 mesh.
Mixing water is running water.
Vaseline (petrolatum) is transparent nontoxic medicinal vaseline.
The analog material in simulation karst collapse col umn coal seam in the large-scale Genesis of Karst Subsided Column delaying water bursting model test in coal seam of the present invention,
Using scheelite crystalline flour as cementing agent, with vaseline conditioning agent, while as plasticity cementing agent, material can be made to have after meeting water
Certain coefficient of stability, while can ensure the seepage flow of material again, can also strengthen permeability；Material is adjusted using vaseline
The water reason characteristic of material, can also adjust the permeability of material；
Using quartz sand and powder of lacquer putty for use on as aggregate, severe and intensity and modulus of elasticity of material etc., material master are adjusted
Want parameter area as shown in table 1, the stress-strain diagram under the conditions of uniaxial compressive is as shown in Figure 1.
Table 1
Simulation Genesis of Karst Subsided Column coal seam is similar in the large-scale Genesis of Karst Subsided Column delaying water bursting model test in coal seam of the present invention
Material, have studied the technical scheme and preparation method of the analog material in simulation karst collapse col umn coal seam in available model experiment, has made coal
Layer Water Inrush From Karstic Collapse Columns layer during similar model test is achieved, solve similar test in the case of relatively low mechanics parameter be difficult to truly
The problem that matter situation is consistent, can also simulate the strength of materials under geological conditions of the same race, infiltrative measure and failure mechanism so that
The experimental result gone out can preferably go to instruct practical engineering application.
The present invention is used as karst collapse col umn from quartz sand, powder of lacquer putty for use on, scheelite crystalline flour, vaseline (petrolatum), mixing water, carbon black
The composition of coal seam analog material.Wherein, scheelite crystalline flour is as main cementing agent, and vaseline can be protected as plasticity cementing agent
Demonstrate,proving coal seam analog material both has intensity, has certain plasticity again, water dissolving will not be met in an experiment, while one can be born
Fixed pressure.Under relatively low mechanics parameter, it is possible to achieve intensity decreases and permeability of the analog material under hydraulic action increase
By force, water inrush channel is ultimately formed；Quartz sand, powder of lacquer putty for use on simulate the intensity, interior of analog material by adjusting proportion as aggregate
Poly- power and internal friction angle etc..The content of vaseline (petrolatum) can adjust the adhesion strength of material, can also adjust analog material
Infiltration coefficient, it is ensured that material physico-mechanical properties and water reason characteristic all meet requirement of experiment；Vaseline can adjust similar
Permeability, intensity and the modulus of elasticity of material, with the increase of content, it is to intensity and the adjustment effect and scheelite of modulus of elasticity
Crystalline flour is on the contrary, ratio by adjusting the two, thus it is possible to vary mechanical characteristic and water the reason characteristic of material.
Gypsum powder fineness used in the present invention is 700 mesh；Quartz sand particle size is less than 7mm, and level is with uniform；Talcum powder it is thin
Spend for 1000 mesh；Vaseline is the medical grade vaseline of white non-toxic.
Prepare the analog material that tomography is simulated in the large-scale karst collapse col umn delaying water bursting model test in coal seam
Raw material is constituted：1 part of quartz sand, 0.09 part of powder of lacquer putty for use on, 0.10 part of scheelite crystalline flour, vaseline (petrolatum) 0.13
Part, 0.09 part of mixing water, 0.02 part of carbon black.
Preparation method is：
1) first according to engineering geological condition karst collapse col umn coal seam physical and mechanical parameter to be simulated, according to the proportioning determined
Weigh quartz sand, powder of lacquer putty for use on, scheelite crystalline flour, vaseline and mixing water；
2) quartz sand, powder of lacquer putty for use on, three kinds of fine materials of scheelite crystalline flour are mixed and stirred for uniformly, standing half an hour, weeding out
Larger cement particle, adds load weighted mixing water, is sufficiently stirred for；
3) vaseline is heated to 50 DEG C~65 DEG C, melts it for liquid；
4) by liquid vaseline and step 3) resulting materials mix, and add carbon black, and are sufficiently stirred for, cool down 5 at room temperature~
10min, produces the coal seam analog material for model test.
Resulting materials in the ess-strain under the conditions of uniaxial compressive as shown in figure 1, reacted test specimen in loading procedure with
The increase of load, the change procedure of strain meets requirement of the condition of similarity to analog material.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, not to present invention protection model
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deform still within protection scope of the present invention that creative work can make.
Claims (6)
1. a kind of coal seam Genesis of Karst Subsided Column gushing water model test similar materials, it is characterized in that：By the component of following parts by weight
Composition：0.13 part of 1 part of quartz sand, 0.09 part of powder of lacquer putty for use on, 0.10 part of scheelite crystalline flour, vaseline or petrolatum, 0.09 part of mixing water,
0.02 part of carbon black.
2. a kind of coal seam Genesis of Karst Subsided Column gushing water model test similar materials as claimed in claim 1, it is characterized in that：It is described
The particle diameter of quartz sand is less than 9mm, and level is with uniform.
3. a kind of coal seam Genesis of Karst Subsided Column gushing water model test similar materials as claimed in claim 1, it is characterized in that：It is described
The fineness of land plaster is 400-600 mesh.
4. a kind of coal seam Genesis of Karst Subsided Column gushing water model test similar materials as claimed in claim 1, it is characterized in that：It is described
The fineness of talcum powder is 8-1400 mesh.
5. a kind of coal seam Genesis of Karst Subsided Column gushing water model test similar materials as claimed in claim 1, it is characterized in that：It is described
Mixing water is running water.
6. the preparation method of the analog material as described in claim any one of 1-5, it is characterized in that：Comprise the following steps：
1) first according to engineering geological condition Genesis of Karst Subsided Column coal seam physical and mechanical parameter to be simulated, according to the proportioning determined
Weigh quartz sand, powder of lacquer putty for use on, scheelite crystalline flour, vaseline and mixing water；
2) quartz sand, powder of lacquer putty for use on, three kinds of fine materials of scheelite crystalline flour are mixed and stirred for uniformly, after standing, weed out larger glue
Particle is tied, load weighted mixing water is added, is sufficiently stirred for；
3) vaseline is heated to 50 DEG C~65 DEG C, melts it for liquid；
4) by liquid vaseline and step 3) resulting materials mix, and add carbon black, and be sufficiently stirred for, cool down, used at room temperature
In the coal seam analog material of model test.
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Cited By (2)
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| CN111766123A (en) * | 2020-06-04 | 2020-10-13 | 宋虎森 | Preparation method of consolidated collapse column gap filler seepage sample |
| CN111781051A (en) * | 2020-07-09 | 2020-10-16 | 中国石油大学(北京) | Artificial conglomerate core based on lithology and permeability control and preparation method and application thereof |
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| CN107101867B (en) | 2020-07-31 |
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