CN106542792A - It is a kind of to be used for mine engineering country rock similar materials under the high stress environment of deep - Google Patents
It is a kind of to be used for mine engineering country rock similar materials under the high stress environment of deep Download PDFInfo
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- CN106542792A CN106542792A CN201610943987.XA CN201610943987A CN106542792A CN 106542792 A CN106542792 A CN 106542792A CN 201610943987 A CN201610943987 A CN 201610943987A CN 106542792 A CN106542792 A CN 106542792A
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- China
- Prior art keywords
- deep
- country rock
- high stress
- stress environment
- sand
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The present invention provides a kind of for mine engineering country rock similar materials under the high stress environment of deep, belongs to mine technology field.The material is in traditional cements, sand, water analog material materials proportioning, Iron concentrate, blanc fixe, Pulvis Talci, Gypsum Fibrosum, glycerol is added to carry out material mixture ratio, mix homogeneous material, make 50 × 100mm of Φ, 50 × 50 × 50mm and 50 × 25mm of Φ standard specimens carry out respectively weighing, uniaxial compression test, different angle shearing testing and Brazilian diametral compression test, measure unit weight, elastic modelling quantity, comprcssive strength, Poisson's ratio, internal friction angle, cohesion and tensile strength.This quality of materials degree is sand 37.15% 42.70%, Iron concentrate 7.11% 11.14%, blanc fixe 4.98% 8.48%, Pulvis Talci 7.42% 10.68%, cement 16.94% 22.30%, Gypsum Fibrosum 1.78% 3.72%, water 11.41% 16.94%, glycerol 0.73% 1.65%, the hard crisp feature of new analog material is obvious, can be used in the characteristics of simulating the high unit weight of mine engineering country rock, high-elastic mould, high intensity under the high stress environment of deep, foundation is provided further to carry out the test of mine engineering deep mining analog simulation.
Description
Technical field
The present invention relates to mine technology field, particularly relates to a kind of for mine engineering country rock phase under the high stress environment of deep
Like simulation material.
Background technology
Deep mining is the pressing issues that China's metallic mineral resources exploitation faces, and solves China's metallic mineral resources
The main approach of amount wretched insufficiency contradiction.
At present, foreign countries have large quantities of metallic ores to enter deep mining, and mining depth has more than 80 more than the metal mine of 1000m
Seat, wherein most be located at South Africa.The metal mine of China also has a collection of entrance deep mining, such as Jiapigou gold deposit 1600m, Huize
Pb-Zn deposits 1360m, Hongtoushan Copper Mine 1300m, Dongguashan Copper Mine 1100m, Shouwangfen Copper Mine 1000m etc..It is under construction in recent years
Or plan build a collection of big-and-middle-sized metal mine, it is substantially all for deep underground mining.Deep resources potential is huge,
It is the certainty of mining development.Big depth and large-scale production face are to a series of major engineering problems：Open into deep
After adopting, fragmented rock body increases, crustal stress increases, water yield is increased, well temperature rise, Existing state of ore body and Mining technology condition,
Environmental condition severe exacerbation.But China's metallic ore deep mining stage at the startup, and deep site environment is complicated and changeable, and it is existing
The condition of field test is difficult to be possessed；And be also directly impossible using practical structures size research experiment, and have
There is significant limitation.By theory of similarity principle, studied using physically scaled model, be to solve engineering problem
One of effective way.
Shandong University's ground center has model for domestic and international during offspur tunnel geomechanical model test
Test analog material have developed a kind of composite, referred to as iron spar powder, guartz sand cement rock-soil similar material.The material is with Iron concentrate, weight
Spar powder, quartz sand are aggregate, with Gypsum Fibrosum powder as regulator, with rosin alcoholic solution as cementing agent, by the power for adjusting material
Learn parameter, with mechanics parameter excursion it is wide, unit weight is high, steady performance (Zhang Xutao. deep cavern subregion disruptor
Reason with numerical simulation analysis study [D]. Shandong University, 2015.), however, the country rock parameters under the high stress environment of deep with
The common country rock of shallow-layer that we commonly use has larger difference, under the high stress environment of deep the country rock of mine engineering have high unit weight,
The characteristics of high-elastic mould, high intensity, existing traditional similar material mixture table, can not meet country rock under the high stress environment of deep
Analog simulation, so, study a kind of new similar materials that can be used in mine engineering country rock under the high stress environment of deep
It is the key of solve problem.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of similar for mine engineering country rock under the high stress environment of deep
Simulation material.
The material is uniformly mixed by sand, Iron concentrate, blanc fixe, Pulvis Talci, cement, Gypsum Fibrosum, water and glycerol and is formed.
Wherein, each component ratio is：Sand 37.15%-42.70%, Iron concentrate 7.11%-11.14%, blanc fixe 4.98%-
8.48%th, Pulvis Talci 7.42%-10.68%, cement 16.94%-22.30%, Gypsum Fibrosum 1.78%-3.72%, water 11.41%-
16.94%th, glycerol 0.73%-1.65%.
The granularity of each component is：Sand:Common fluvial sand is not more than 20 mesh；Iron concentrate:No more than 100 mesh；Blanc fixe:Less
In 325 mesh；Pulvis Talci:No more than 1250 mesh；Cement:Common 42.5# portland cements are not more than 20 mesh；Gypsum Fibrosum:No more than 120
Mesh.
Above-mentioned material is equipped with mixing process at room temperature, and the first full and uniform mix of each solid material is sweet
Oil is added to the water and is sufficiently stirred for, and then solid-liquid is mixed to uniformly again.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
(1) analog material generated according to this mix proportion scheme, can closely conform to the requirement of physical similarity test parameterss, carry out
The preparation of physical simulation experiment model；
(2) the characteristics of this material has high-elastic mould, high intensity, can simulate mine engineering country rock Gao Rong under condition of high ground stress
Weight, high-elastic mould, the characteristic of high intensity；
(3) this material innovation adds Iron concentrate, blanc fixe, Pulvis Talci, Gypsum Fibrosum, glycerol to carry out material mixture ratio, with deep
Mine environment is more coordinated, and carries out country rock physical test modelling effect under the high stress environment of deep more preferable.
(4) this material material therefor is nontoxic, and cheap easy acquisition, simple process, arid cycle are short, matched somebody with somebody
Material parameter stably accurately, be a kind of inexpensive simulation material.
Description of the drawings
Fig. 1 is the present invention for mine engineering country rock similar materials proportioning test technology under the high stress environment of deep
Route map.
Specific embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
The present invention provides a kind of for mine engineering country rock similar materials under the high stress environment of deep, the material by
Sand, Iron concentrate, blanc fixe, Pulvis Talci, cement, Gypsum Fibrosum, water and glycerol are uniformly mixed and form.Wherein, each component ratio
For：Sand 37.15%-42.70%, Iron concentrate 7.11%-11.14%, blanc fixe 4.98%-8.48%, Pulvis Talci 7.42%-
10.68%th, cement 16.94%-22.30%, Gypsum Fibrosum 1.78%-3.72%, water 11.41%-16.94%, glycerol 0.73%-
1.65%.
As shown in figure 1, when carrying out proportioning to the material, process is as follows：
(1) coarse particulate material sieves the removal of impurity, it is ensured that granularity：Sand:Common fluvial sand is not more than 20 mesh；Iron concentrate:Less
In 100 mesh；Blanc fixe:No more than 325 mesh；Pulvis Talci:No more than 1250 mesh；Cement:Common 42.5# portland cements are little
In 20 mesh；Gypsum Fibrosum:No more than 120 mesh；
(2) various materials are weighed by design proportioning, mix uniformly prepares test specimen；Material in mixing process, in room
Temperature is lower to be equipped with, the first full and uniform mix of each solid material, and glycerol is added to the water and is sufficiently stirred for, then solid-liquid mixing again
To uniform；
(3) Φ 50 × 100mm standard rock samples are made, often assembles than configuring six test specimens, tried with vernier caliper measurement
Part actual size, electronic scale are weighed, and measure material unit weight；Carry out uniaxial compression test, measure material unit weight, elastic modelling quantity,
Comprcssive strength, Poisson's ratio；
(4) 50 × 50 × 50mm standard rock samples are made, often assembles than configuring six test specimens, carry out angle shearing examination
Test, measure material internal friction angle, cohesion；
(5) Φ 50 × 25mm standard rock samples are made, often assemble than configuring six test specimens, carry out Brazilian diametral compression test,
Measure Tensile strength；
(6) material mixture ratio is adjusted, comprehensively measures test block indices so as to meet the appearance of country rock under the high stress environment of deep
Weight, elastic modelling quantity, cohesion, internal friction angle, comprcssive strength, tensile strength, Poisson's ratio parameter.
Access collects mine engineering country rock physical and mechanical parameter under the high stress environment of deep, chooses protolith physical mechanicses detailed
Parameter such as table 1.
1 protolith physical and mechanical parameter of table
According to the concrete scope of wanted simulated section, it is determined that test geometric similarity ratio is 1：100, i.e. model geometric are similar often
Number αl=100.
Because strain, internal friction angle, Poisson's ratio affinity constant：
Again：ασ=αlαρ=αlαγ, ασ=αEαε, ασ=αlαρ=αlαγ=αE；
Therefore：Elastic modelling quantity, intensity, cohesion, stress similitude constant：αE=αR=αc=ασ=αlαγ。
It can thus be appreciated that：Severe affinity constant can determine that other specification after determining.Can try to take a series of severe similar
Constant such as table 2, is embodied as result by contrast, chooses suitable similar proportioning.
Analog material parameter under 2 different affinity constants of table
Embodiment 1：
1) by sand 42.70%, Iron concentrate 7.11%, blanc fixe 4.98%, Pulvis Talci 10.68%, cement 17.79%,
Gypsum Fibrosum 1.78%, water 14.23%, the mass percentage content of glycerol 0.73% carry out proportioning.
2) by above-mentioned dispensing mixing and stirring, 50 × 100mm of Φ, 50 × 50 × 50mm, Φ 50 × 25mm standards are prepared
Rock sample is each six, is put into curing box and conserves one week.
3) by weighing, uniaxial compression test, different angle shearing testing, Brazilian diametral compression test measure material parameters, hold
Weight：2.26g/cm3, elastic modelling quantity：608MPa, cohesion：0.0931MPa, internal friction angle：43.29 °, comprcssive strength：
1.2Mpa, tensile strength：0.14Mpa, Poisson's ratio：0.21.This proportioning combination disclosure satisfy that αrProtolith analog simulation when=1.3,
Illustrate that this proportioning combination gained analog material can simulate the high unit weight of mine engineering country rock under condition of high ground stress, high-elastic mould, high-strength
Degree characteristic.
Embodiment 2：
1) by sand 37.15%, Iron concentrate 11.14%, blanc fixe 5.21%, Pulvis Talci 7.42%, cement 22.30%,
Gypsum Fibrosum 3.72%, water 11.41%, the mass percentage content of glycerol 1.65% carry out proportioning.
2) by above-mentioned dispensing mixing and stirring, 50 × 100mm of Φ, 50 × 50 × 50mm, Φ 50 × 25mm standards are prepared
Rock sample is each six, is put into curing box and conserves one week.
3) by weighing, uniaxial compression test, different angle shearing testing, Brazilian diametral compression test measure material parameters, hold
Weight：2.14g/cm3, elastic modelling quantity：541.8MPa, cohesion：0.1194MPa, internal friction angle：40.87 °, comprcssive strength：
1.52Mpa, tensile strength：0.21Mpa, Poisson's ratio：0.24.This proportioning combination disclosure satisfy that αrProtolith analog simulation when=1.4,
Illustrate that this proportioning combination gained analog material has high-elastic mould, high compressive strength, high-tensile characteristic.
Embodiment 3：
1) by sand 37.30%, Iron concentrate 8.48%, blanc fixe 8.48%, Pulvis Talci 8.48%, cement 16.94%, stone
Cream 2.37%, water 16.94%, the mass percentage content of glycerol 1.01% carry out proportioning.
2) by above-mentioned dispensing mixing and stirring, 50 × 100mm of Φ, 50 × 50 × 50mm, Φ 50 × 25mm standards are prepared
Rock sample is each six, is put into curing box and conserves one week.
3) by weighing, uniaxial compression test, different angle shearing testing, Brazilian diametral compression test measure material parameters, hold
Weight：2.04g/cm3, elastic modelling quantity：561MPa, cohesion：0.1518MPa, internal friction angle：42.27 °, comprcssive strength：
1.3Mpa, tensile strength：0.11Mpa, Poisson's ratio：0.21.This proportioning combination disclosure satisfy that αrProtolith analog simulation when=1.5,
Illustrate that this proportioning combination gained analog material has the characteristic of high-elastic mould, high intensity.
The above is the preferred embodiment of the present invention, for those skilled in the art, not
On the premise of departing from principle of the present invention, some improvements and modifications can also be made, these improvements and modifications also should be regarded as this
The protection domain of invention.
Claims (4)
1. a kind of for mine engineering country rock similar materials under the high stress environment of deep, it is characterised in that：The material by sand,
Iron concentrate, blanc fixe, Pulvis Talci, cement, Gypsum Fibrosum, water and glycerol are uniformly mixed and form.
2. mine engineering country rock similar materials under the high stress environment for deep according to claim 1, its feature
It is：The material is consisted of：Sand 37.15%-42.70%, Iron concentrate 7.11%-11.14%, blanc fixe 4.98%-
8.48%th, Pulvis Talci 7.42%-10.68%, cement 16.94%-22.30%, Gypsum Fibrosum 1.78%-3.72%, water 11.41%-
16.94%th, glycerol 0.73%-1.65%.
3. mine engineering country rock similar materials under the high stress environment for deep according to claim 1, its feature
It is：In the material, each component granularity is：Sand:Common fluvial sand is not more than 20 mesh；Iron concentrate:No more than 100 mesh；Barite
Powder:No more than 325 mesh；Pulvis Talci:No more than 1250 mesh；Cement:Common 42.5# portland cements are not more than 20 mesh；Gypsum Fibrosum:No
More than 120 mesh.
4. mine engineering country rock similar materials under the high stress environment for deep according to claim 1, its feature
It is：The material is equipped with mixing process at room temperature, the first full and uniform mix of each solid material, glycerol
It is added to the water and is sufficiently stirred for, then solid-liquid is mixed to uniformly again.
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Cited By (7)
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|---|---|---|---|---|
| CN107991186A (en) * | 2017-11-28 | 2018-05-04 | 西安科技大学 | The tensile strength test experimental rig of rocks containing crack and method |
| CN108439914A (en) * | 2018-05-16 | 2018-08-24 | 中国人民解放军陆军工程大学 | A kind of high-strength Geomechanical Similar Material of cement base and preparation method thereof |
| CN110395953A (en) * | 2019-07-31 | 2019-11-01 | 河海大学 | A kind of concrete material and destructive dynamic test model preparation method |
| CN110736662A (en) * | 2019-10-18 | 2020-01-31 | 湖北工业大学 | Determination method for similar conditions and similar material proportions of simulated carbonate geomechanical models |
| CN111018421A (en) * | 2019-12-23 | 2020-04-17 | 山东大学 | Ultra-low permeability airtight rock stratum similar material and preparation method and application thereof |
| CN112765781A (en) * | 2020-12-30 | 2021-05-07 | 中铁二院工程集团有限责任公司 | Stratified rock mass destruction criterion and determination method |
| CN115964931A (en) * | 2022-11-04 | 2023-04-14 | 广西大学 | Theory, method and formula for preparing materials with similar dynamic and static characteristics of rock high-strength Gao Cui |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107991186A (en) * | 2017-11-28 | 2018-05-04 | 西安科技大学 | The tensile strength test experimental rig of rocks containing crack and method |
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| CN108439914A (en) * | 2018-05-16 | 2018-08-24 | 中国人民解放军陆军工程大学 | A kind of high-strength Geomechanical Similar Material of cement base and preparation method thereof |
| CN110395953A (en) * | 2019-07-31 | 2019-11-01 | 河海大学 | A kind of concrete material and destructive dynamic test model preparation method |
| CN110736662A (en) * | 2019-10-18 | 2020-01-31 | 湖北工业大学 | Determination method for similar conditions and similar material proportions of simulated carbonate geomechanical models |
| CN110736662B (en) * | 2019-10-18 | 2022-06-07 | 湖北工业大学 | Method for determining similar conditions and similar material ratios of simulated carbonate geomechanical model |
| CN111018421A (en) * | 2019-12-23 | 2020-04-17 | 山东大学 | Ultra-low permeability airtight rock stratum similar material and preparation method and application thereof |
| CN112765781A (en) * | 2020-12-30 | 2021-05-07 | 中铁二院工程集团有限责任公司 | Stratified rock mass destruction criterion and determination method |
| CN112765781B (en) * | 2020-12-30 | 2022-07-29 | 中铁二院工程集团有限责任公司 | Stratified rock mass destruction criterion and determination method |
| CN115964931A (en) * | 2022-11-04 | 2023-04-14 | 广西大学 | Theory, method and formula for preparing materials with similar dynamic and static characteristics of rock high-strength Gao Cui |
| CN115964931B (en) * | 2022-11-04 | 2023-09-05 | 广西大学 | Theory, method and formula for preparing rock materials with high strength and high brittleness and similar dynamic and static characteristics |
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