CN109626935A - A kind of weak cementing softrock-like material preparation method of low-intensity dilatancy - Google Patents
A kind of weak cementing softrock-like material preparation method of low-intensity dilatancy Download PDFInfo
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- CN109626935A CN109626935A CN201910079556.7A CN201910079556A CN109626935A CN 109626935 A CN109626935 A CN 109626935A CN 201910079556 A CN201910079556 A CN 201910079556A CN 109626935 A CN109626935 A CN 109626935A
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- cementing
- dilatancy
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- softrock
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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
- C04B28/14—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 calcium sulfate cements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00991—Uses not provided for elsewhere in C04B2111/00 for testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of weak cementing softrock-like material of low-intensity dilatancy and test methods, the material includes basis material and expanding material, basis material is the mixture of aggregate materials and cementing material, aggregate materials are the main material of the weak cementing softrock-like material of the low-intensity dilatancy, cementing material is the cementation solidifying material of the weak cementing softrock-like material of the low-intensity dilatancy, and expanding material has certain dilatancy after aggregate materials and cementing material are mixed.Material provided by the invention is a kind of novel analog material poor, expansion rate is high low with intensity, cementing.
Description
Technical field
The present invention relates to a kind of weak cementing softrock-like material of low-intensity dilatancy and test method, which is suitable for taking off
The layer during similar model test for showing the underground engineering wall rocks such as tunnel, tunnel deformation and destructive characteristics and strata-pressure behavior, belongs to mine
With underground engineering safe practice.
Background technique
Mineral resources support the growth and social development of national economy, with the large scale mining of mineral resources, China
Central and east mineral resources are petered out, and pit mining is gradually to western parts such as the Resource management Inner Mongol abundant, Ningxia, Xinjiang
Mining area transfer.China mine of western it is widely distributed weak cemented rock, low with intensity, cementing poor, easy-weathering, meet cement
The features such as change；Due to the specific physical and mechanical property of weak cementing mud stone, so that carrying out mine, water conservancy, traffic and building etc.
It is difficult to make reasonable evaluation when engineering design, often causes engineering extension, Temporarily Closed, additional investment etc., cause huge
Huge economic loss.A large amount of engineering practice shows that the stability of weak cementing soft-rock tunnel is poor, is influenced by excavation disturbance, this
Difficulty is brought to tunnelling construction, underground mining etc..
Similarity material test is to disclose strata movement feature, strata behavior analysis of roadway Strata Behavior during exploitation of coal resources
With evaluation supporting effect of roadway important means, and the preparation of analog material be determine similarity material test success or failure pass
Key.Due to the special diagenetic process in western China and diagenesis condition, so that weak cemented rock has the low (uniaxial compressive of intensity
Intensity is lower than 1MPa), cementing poor (argillaceous agglutination, gap is big between particle), expansion rate height (clay mineral component content, generally
40% or more) the features such as, the specific physical of weak cemented rock and mechanical property cause at present frequently with analog material be difficult to it is full
Foot requires, and according to the powdered adhesive material such as cement, lime, may make the cementing properties between likeness in form material granule good, by force
It spends relatively high；It (is used after high temperature melt) according to the solid-likes such as rosin, paraffin adhesive material, may make likeness in form material granule
Between cementing properties it is good, intensity relative reduction.But two class materials are unable to satisfy low, the cementing difference of weak cemented rock intensity
Feature.In addition, the clay mineral component content of weak cemented rock is higher, that is, contain a large amount of montmorillonite, illite, kaolinite,
Swelling is obvious after meeting water, and existing analog material can not show this phenomenon, this results in layer during similar model test phenomenon and reality
Border project situation is not exclusively consistent.
In conclusion need to research and develop a kind of weak cementing softrock-like material preparation method of low-intensity dilatancy, it is weak to disclose
Cementing soft rock strata Tunnel Pressure Strata Behavior and optimization roadway support design provide a kind of novel model test material, can be
The safety and high efficiency in China, mine, western part provides experimental technique guarantee.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of weak glue of low-intensity dilatancy
Tie softrock-like material and test method, the material low, cementing feature poor, expansion rate is high with intensity.
Technical solution: to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of weak cementing softrock-like material of low-intensity dilatancy, including basis material and expanding material, basis material be
The mixture of aggregate materials and cementing material, aggregate materials are the main material of the weak cementing softrock-like material of the low-intensity dilatancy
Material, cementing material are the cementation solidifying material of the weak cementing softrock-like material of the low-intensity dilatancy, and expanding material makes aggregate
There is certain dilatancy after material and cementing material mixing.
Specifically, the aggregate materials are river sand, the partial size of river sand is 0.1~0.2mm；The cementing material be gypsum and
The mass ratio of the mixture of calcium carbonate, gypsum and calcium carbonate is 1:1~1:2；The expanding material is montmorillonite, illite, height
The mixture of one or more of ridge stone；The volume of the aggregate materials, cementing material and expanding material is according to weak glue
The intensity and dilatancy for tying soft rock carry out proportion design, and the quality of general cementing material is the 5~25% of aggregate materials, expand material
The quality of material is the 10~50% of aggregate materials quality, and the cubical expansivity of expanding material is 0~300%.
A kind of test method of the weak cementing softrock-like material of low-intensity dilatancy, includes the following steps:
Step 1: first aggregate materials, cementing material and water are matched according to the intensity of the weak cementing soft rock of Practical Project
Test, determines optimal mix ratio；Then it according to the dilatancy of the weak cementing soft rock of Practical Project, is gradually added by development swollen
The method of swollen material determines the addition content of expanding material；Aggregate materials, the cementing material, expansion of match ratio will finally be determined
Material and water pour into mixing in blender, are mixing uniformly to form the weak cementing softrock-like material of low-intensity dilatancy；
Step 2: it by the weak cementing softrock-like material of low-intensity dilatancy according to the layered position being pre-designed, successively spreads
It is set in layer during similar model test platform；After the completion of to be laid, wear-resistant type lubricating oil is smeared simultaneously in the lateral surface of layer during similar model test platform
It is laid with polyfluortetraethylene plate and carries out antifriction processing；
Step 3: starting hydraulic loading device is similar to the weak cementing soft rock of low-intensity dilatancy in layer during similar model test platform
Material carries out load test, while carrying out the acquisition of deformation of the surrounding rock in tunnel and stress information.
The utility model has the advantages that the weak cementing softrock-like material of low-intensity dilatancy provided by the invention and test method, provide
Material is a kind of feature poor, expansion rate is high low with intensity, cementing, and the method provided is suitable for disclosing weak cementing soft rock strata
The layer during similar model test of Tunnel Pressure Strata Behavior.
Specific embodiment
Below with reference to embodiment, the present invention will be further explained.
A kind of weak cementing softrock-like material of low-intensity dilatancy, including basis material and expanding material, basis material be
The mixture of aggregate materials and cementing material, aggregate materials are the main material of the weak cementing softrock-like material of the low-intensity dilatancy
Material, cementing material are the cementation solidifying material of the weak cementing softrock-like material of the low-intensity dilatancy, and expanding material makes aggregate
There is certain dilatancy after material and cementing material mixing.
Specifically, the aggregate materials are river sand, the partial size of river sand is 0.1~0.2mm；The cementing material be gypsum and
The mass ratio of the mixture of calcium carbonate, gypsum and calcium carbonate is 1:1~1:2；The expanding material is montmorillonite, illite, height
The mixture of one or more of ridge stone；The volume of the aggregate materials, cementing material and expanding material is according to weak glue
The intensity and dilatancy for tying soft rock carry out proportion design, and the quality of general cementing material is the 5~25% of aggregate materials, expand material
The quality of material is the 10~50% of aggregate materials quality, and the cubical expansivity of expanding material is 0~300%.
A kind of test method of the weak cementing softrock-like material of low-intensity dilatancy, includes the following steps:
Step 1: first aggregate materials, cementing material and water are matched according to the intensity of the weak cementing soft rock of Practical Project
Test, determines optimal mix ratio；Then it according to the dilatancy of the weak cementing soft rock of Practical Project, is gradually added by development swollen
The method of swollen material determines the addition content of expanding material；Aggregate materials, the cementing material, expansion of match ratio will finally be determined
Material and water pour into mixing in blender, are mixing uniformly to form the weak cementing softrock-like material of low-intensity dilatancy；
Step 2: it by the weak cementing softrock-like material of low-intensity dilatancy according to the layered position being pre-designed, successively spreads
It is set in layer during similar model test platform；After the completion of to be laid, wear-resistant type lubricating oil is smeared simultaneously in the lateral surface of layer during similar model test platform
It is laid with polyfluortetraethylene plate and carries out antifriction processing；
Step 3: starting hydraulic loading device is similar to the weak cementing soft rock of low-intensity dilatancy in layer during similar model test platform
Material carries out load test, while carrying out the acquisition of deformation of the surrounding rock in tunnel and stress information.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of weak cementing softrock-like material of low-intensity dilatancy, it is characterised in that: including basis material and expanding material, base
Body material is the mixture of aggregate materials and cementing material, and aggregate materials are the weak cementing softrock-like material of the low-intensity dilatancy
Main material, cementing material be the weak cementing softrock-like material of the low-intensity dilatancy cementation solidifying material, expanding material
So that there is certain dilatancy after aggregate materials and cementing material mixing.
2. the weak cementing softrock-like material of low-intensity dilatancy according to claim 1, it is characterised in that: the aggregate material
Material is river sand, and the partial size of river sand is 0.1~0.2mm；The cementing material is the mixture of gypsum and calcium carbonate, gypsum and carbonic acid
The mass ratio of calcium is 1:1~1:2；The expanding material is the mixed of one or more of montmorillonite, illite, kaolinite
Close object；The quality of cementing material is the 5~25% of aggregate materials, the quality of expanding material be aggregate materials quality 10~
50%, the cubical expansivity of expanding material is 0~300%.
3. a kind of test method of the weak cementing softrock-like material of low-intensity dilatancy, characterized by the following steps:
Step 1: first carrying out proportioning test according to the intensity of the weak cementing soft rock of Practical Project for aggregate materials, cementing material and water,
Determine optimal mix ratio；Then according to the dilatancy of the weak cementing soft rock of Practical Project, by carrying out gradually addition expansion material
The method of material determines the addition content of expanding material；Aggregate materials, the cementing material, expanding material of match ratio will finally be determined
It pours into blender and mixes with water, be mixing uniformly to form the weak cementing softrock-like material of low-intensity dilatancy；
Step 2: it by the weak cementing softrock-like material of low-intensity dilatancy according to the layered position being pre-designed, is successively routed to
In layer during similar model test platform；After the completion of to be laid, wear-resistant type lubricating oil is smeared in the lateral surface of layer during similar model test platform and is laid with
Polyfluortetraethylene plate carries out antifriction processing；
Step 3: starting hydraulic loading device is to the weak cementing softrock-like material of low-intensity dilatancy in layer during similar model test platform
Load test is carried out, while carrying out the acquisition of deformation of the surrounding rock in tunnel and stress information.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910079556.7A CN109626935A (en) | 2019-01-28 | 2019-01-28 | A kind of weak cementing softrock-like material preparation method of low-intensity dilatancy |
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| CN201910079556.7A CN109626935A (en) | 2019-01-28 | 2019-01-28 | A kind of weak cementing softrock-like material preparation method of low-intensity dilatancy |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376031A (en) * | 2019-07-06 | 2019-10-25 | 天津大学 | A kind of test method at simulation coarse aggregate-mortar reduction interface |
| CN110482988A (en) * | 2019-09-18 | 2019-11-22 | 兰州交通大学 | A kind of weak expansion slime analog material and preparation method thereof |
| CN114047040A (en) * | 2021-10-22 | 2022-02-15 | 北京中煤矿山工程有限公司 | Preparation method for remolding large-volume rock sample in drilling method sinking hob breaking weak cemented rock test |
| CN116023118A (en) * | 2022-12-12 | 2023-04-28 | 中国建筑第五工程局有限公司 | Red layer soft rock similar material simulating progressive disintegration and preparation method and device thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376031A (en) * | 2019-07-06 | 2019-10-25 | 天津大学 | A kind of test method at simulation coarse aggregate-mortar reduction interface |
| CN110376031B (en) * | 2019-07-06 | 2022-01-28 | 天津大学 | Test method for simulating coarse aggregate-mortar weakened interface |
| CN110482988A (en) * | 2019-09-18 | 2019-11-22 | 兰州交通大学 | A kind of weak expansion slime analog material and preparation method thereof |
| CN114047040A (en) * | 2021-10-22 | 2022-02-15 | 北京中煤矿山工程有限公司 | Preparation method for remolding large-volume rock sample in drilling method sinking hob breaking weak cemented rock test |
| CN114047040B (en) * | 2021-10-22 | 2024-03-26 | 北京中煤矿山工程有限公司 | Preparation method for remolding large-volume rock sample in drilling method shaft sinking hob broken weak cemented rock test |
| CN116023118A (en) * | 2022-12-12 | 2023-04-28 | 中国建筑第五工程局有限公司 | Red layer soft rock similar material simulating progressive disintegration and preparation method and device thereof |
| CN116023118B (en) * | 2022-12-12 | 2023-09-15 | 中国建筑第五工程局有限公司 | Red layer soft rock similar material simulating progressive disintegration and preparation method and device thereof |
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