CN106630812A - Capillary barrier material for rock mass fracture unsaturated seepage test and manufacturing process - Google Patents
Capillary barrier material for rock mass fracture unsaturated seepage test and manufacturing process Download PDFInfo
- Publication number
- CN106630812A CN106630812A CN201610837562.0A CN201610837562A CN106630812A CN 106630812 A CN106630812 A CN 106630812A CN 201610837562 A CN201610837562 A CN 201610837562A CN 106630812 A CN106630812 A CN 106630812A
- Authority
- CN
- China
- Prior art keywords
- sand
- water
- cement
- barrier material
- capillary barrier
- Prior art date
- 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.)
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Classifications
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
-
- 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
Abstract
The invention relates to a capillary barrier material for a rock mass fracture unsaturated seepage test and a manufacturing process. A water-permeable mortar block is formed by mixing water, cement, sand and a water-permeable concrete strengthening agent through casting according to the ratio of 130-150 to 100 to 400-600 to 3-4, the sand particle size range is 0.315-0.63 mm, the cement is ordinary Portland cement, and the water-permeable concrete strengthening agent is Dechang Weiye brand. The manufacturing process comprises the steps that 120-mesh and 60-mesh screens are utilized to screen out the sand with the particle size range of 0.315-0.63 mm; the cement, the sand and the water-permeable concrete strengthening agent are added to a mixing processor according to the proportion for even mixing and stirring. The capillary barrier material has the advantages of being appropriate in air intake value, large in permeability coefficient, convenient to prepare, simple to manufacture, low in cost and the like and has a good application prospect.
Description
Technical field
The present invention relates to rock cranny unsaturated seepage, polyphase fluid experimental field, more particularly to rock cranny unsaturation are oozed
The selection and making of capillary barrier material in stream experimental rig, can be used to construct the capillary barrier of unsaturated seepage experiment of rock cranny
Hinder grid.
Background technology
There are many crack rocks in the engineering fields such as the buried disposal of water conservancy and hydropower, oil secondary recovery and nuke rubbish
Unsaturated seepage or multiphase flow problem.The key of research crack rock unsaturated seepage or multiphase flow is that test determines rock cranny
Capillary pressure ~ saturation degree, Unsaturated Hydraulic Conductivity ~ saturation degree（Or capillary pressure）Functional relation, and capillary obstacle grid be survey
Determine a critical component in the displacement experiment and unsaturated seepage experiment of above-mentioned relation.If the air-entry value of selected capillary obstacle grid
It is too low, then it cannot be guaranteed that prevent in the range of adopted capillary pressure non-wetting mutually through its flowing testing, cause test
Failure；If the infiltration coefficient of selected capillary obstacle grid is too small, the time reached needed for balance can be increased, when extending whole test
Between.Frequently with high air-entry value pottery clay plates in soil body unsaturated seepage experiment（Air-entry value is more than 100kPa, and infiltration coefficient is less than
10-6cm/s）As capillary obstacle grid.Maximum capillary pressure value in due to crack displacement experiment and unsaturated seepage experiment does not surpass
15kPa is crossed, is to test in the range of adopted capillary pressure, water mutually smooth can pass through, while and resistance can be played to non-wetting phase
Gear is acted on, often preferable from transmissibility（Relative to pottery clay plates）, the suitable porous mortar of air-entry value is used as capillary obstacle grid.But
The porous mortar infiltration coefficient for using at present is 10-5Cm/s magnitudes, still can not well meet rock cranny unsaturated seepage
Test requirements document, subject matter is that infiltration coefficient is little, and test period is long, and the Unsaturated Hydraulic Conductivity of one sample of perfect measurement needs
More than one month.
Have based on this, propose the present invention.
The content of the invention
For the above-mentioned technical problem of prior art, it is an object of the invention to provide a kind of infiltration coefficient is big, air-entry value is fitted
In, suitable for the capillary barrier material and its manufacture craft of unsaturated seepage experiment of rock cranny, its pass through add proper proportion
Pervious concrete reinforcing agent, on the premise of air-entry value is not affected, improve material infiltration coefficient, be rock cranny unsaturation
The construction of the critical component in seepage tests-capillary obstacle grid provides suitable material, and draw materials conveniently, make simple, cost
It is low.
In order to achieve the above object, the present invention is achieved by the following technical solutions：
A kind of capillary barrier material for unsaturated seepage experiment of rock cranny, by weight meter include following components：
130 ~ 150 parts of water, 100 parts of cement, 3 ~ 4 parts of mixing of 400 ~ 600 parts of sand and pervious concrete reinforcing agent are poured and formed, wherein
Water, sand, the content of pervious concrete reinforcing agent can suitably be chosen by test requirements document in the range of aforementioned proportion, and described sand is selected
Natural siliceous sand, the particle diameter of sand is 0.315～0.63mm, and described cement is Portland cement, described permeable coagulation
Native reinforcing agent selects Dechang great achievement brand.
A kind of manufacture craft of the capillary barrier material for unsaturated seepage experiment of rock cranny, comprises the following steps：
（1）Using 120 mesh（0.315mm）With 60 mesh（0.63mm）Screen cloth, sieves to natural siliceous sand, screens out particle diameter model
Enclose the sand for 0.315～0.63mm, sand uniform particle sizes can make the hole uniform pore diameter of mortar block, it is ensured that higher air-entry value and
Good transmissibility；
（2）Cement, sand, pervious concrete reinforcing agent are put into mixing and stirring in hybrid processor by said ratio；
（3）The compound for stirring is poured into specified mould, addition requires the water of ratio, vibrates to form permeable sand while stirring
Slurry；
（4）Permeable sand lumps gang mould conserve 7 days after again the demoulding conserve 21 days, that is, be successful the capillary barrier material of needs-thoroughly
Water sand lumps.
The present invention is used for the capillary barrier material and manufacture craft and prior art phase of unsaturated seepage experiment of rock cranny
Than having the advantages that：
1st, air-entry value is moderate（More than 15kPa）, more than the air-entry value wanted needed for all kinds of unsaturated seepage experiment of rock cranny；
2nd, infiltration coefficient is big（Reach 10-4Cm/s magnitudes）, than used at present porous mortar maximum infiltration coefficient it is big by 5 ~ 8
More than times, more than 2 orders of magnitude bigger than high air-entry value pottery clay plates infiltration coefficient；
3rd, draw materials conveniently, make simple, low cost, price is far below high air-entry value pottery clay plates, suitable with porous mortar price；
4th, the making needs of capillary obstacle grid in all kinds of unsaturated seepage experiment of rock cranny can be met, with preferably using front
Scape.
Specific embodiment
The capillary barrier material of the present embodiment（Permeable sand lumps）By originals such as cement, sand, water and pervious concrete reinforcing agents
Material mixing is poured and formed.Permeable sand lumps based on raw material components weight, by water:Cement:Sand:Pervious concrete reinforcing agent
=130~150 : 100 : 400~600 :3 ~ 4 mixing are poured and formed, and sand selects natural siliceous sand, and particle size range is 0.315～
0.63mm, cement selection Portland cement, pervious concrete reinforcing agent selects Dechang great achievement brand.Wherein water, sand, permeable
The content of concrete intensifier can be by the unsaturated seepage experiment requirement of different type crack in above-mentioned raw materials composition weight ratio model
Enclose interior appropriate selection.
The capillary barrier material of the present embodiment（Permeable sand lumps）Manufacture craft it is as follows：
（1）Using 120 mesh（0.315mm）With 60 mesh（0.63mm）Screen cloth, sieves to natural siliceous sand, screens out particle diameter model
The sand for 0.315～0.63mm is enclosed, sand uniform particle sizes can make the mortar block hole uniform pore diameter for pouring, it is ensured that higher air inlet
Value and good transmissibility.
（2）The raw material such as cement, sand, pervious concrete reinforcing agent are put into hybrid processor by said ratio and is mixed
Stir.
（3）The compound for stirring is poured into specified mould, addition requires the water of ratio, while adding water vibrate while stirring
Form permeable mortar.
（4）By permeable sand lumps gang mould, together again the demoulding is conserved 21 days after the indoor maintenance of maintenance 7 days, that is, being successful needs
Capillary barrier material-permeable sand the lumps wanted.
The material of the present embodiment compares with existing porous mortar, the air-entry value of pottery clay plates and infiltration coefficient and is shown in Table 1.
The permeable sand lumps of table 1, porous mortar, pottery clay plates infiltration coefficient and air-entry value
As can be seen from Table 1, the air-entry value of permeable sand lumps is suitable with porous mortar, but infiltration coefficient is big more than 5 ~ 8 times；Though
So permeable sand lumps air-entry value is much smaller than more than pottery clay plates, but big 2 orders of magnitude of infiltration coefficient.Therefore material proposed by the invention
Material infiltration coefficient is big, air-entry value is moderate, is more suitable for unsaturated seepage experiment of rock cranny.
In sum, the pervious concrete reinforcing agent that the present invention passes through addition proper proportion, before air-entry value is not affected
Put, improve the infiltration coefficient of material, be the structure of the critical component-capillary obstacle grid in unsaturated seepage experiment of rock cranny
Offer suitable material is provided, and draw materials conveniently, make simple, low cost.
Claims (2)
1. a kind of capillary barrier material for unsaturated seepage experiment of rock cranny, it is characterised in that by weight meter includes
Following components：
130 ~ 150 parts of water, 100 parts of cement, 3 ~ 4 parts of mixing of 400 ~ 600 parts of sand and pervious concrete reinforcing agent are poured and formed, described
The particle diameter of sand be 0.315～0.63mm, described cement is Portland cement.
2. a kind of manufacture craft of the capillary barrier material for unsaturated seepage experiment of rock cranny, it is characterised in that include with
Lower step：
（1）Using 120 mesh and 60 eye mesh screens, sand is sieved, screen out the sand that particle size range is 0.315～0.63mm；
（2）Cement, sand, pervious concrete reinforcing agent are put into mixing and stirring in hybrid processor by certain proportioning；
（3）The compound for stirring is poured into specified mould, a certain proportion of water is added, vibrates to form permeable sand while stirring
Slurry；
（4）Permeable sand lumps gang mould conserve 7 days after again the demoulding conserve 21 days, that is, be successful the capillary barrier material of needs-thoroughly
Water sand lumps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610837562.0A CN106630812A (en) | 2016-09-22 | 2016-09-22 | Capillary barrier material for rock mass fracture unsaturated seepage test and manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610837562.0A CN106630812A (en) | 2016-09-22 | 2016-09-22 | Capillary barrier material for rock mass fracture unsaturated seepage test and manufacturing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106630812A true CN106630812A (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610837562.0A Pending CN106630812A (en) | 2016-09-22 | 2016-09-22 | Capillary barrier material for rock mass fracture unsaturated seepage test and manufacturing process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107226650A (en) * | 2017-05-16 | 2017-10-03 | 中国矿业大学 | One kind experiment similar rock of hole rock mass and preparation method thereof |
| CN115073069A (en) * | 2021-03-15 | 2022-09-20 | 江西路邦新型材料有限公司 | Pervious concrete mortar |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1963454A (en) * | 2006-10-25 | 2007-05-16 | 浙江大学 | Apparatus for unsaturated seepage experiment of rock cranny |
| CN105403498A (en) * | 2015-12-21 | 2016-03-16 | 中国矿业大学 | Rock filled fracture permeability test method and apparatus considering multi-factor affect |
-
2016
- 2016-09-22 CN CN201610837562.0A patent/CN106630812A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1963454A (en) * | 2006-10-25 | 2007-05-16 | 浙江大学 | Apparatus for unsaturated seepage experiment of rock cranny |
| CN105403498A (en) * | 2015-12-21 | 2016-03-16 | 中国矿业大学 | Rock filled fracture permeability test method and apparatus considering multi-factor affect |
Non-Patent Citations (1)
| Title |
|---|
| 王家臣等: "《煤矿岩层控制理论与技术进展 33届国际采矿岩层控制会议（中国）论文集》", 31 October 2014 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107226650A (en) * | 2017-05-16 | 2017-10-03 | 中国矿业大学 | One kind experiment similar rock of hole rock mass and preparation method thereof |
| CN115073069A (en) * | 2021-03-15 | 2022-09-20 | 江西路邦新型材料有限公司 | Pervious concrete mortar |
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Application publication date: 20170510 |
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