CN109630191A - A method of preventing knot top, layering in tailing-filled technique - Google Patents
A method of preventing knot top, layering in tailing-filled technique Download PDFInfo
- Publication number
- CN109630191A CN109630191A CN201811598116.4A CN201811598116A CN109630191A CN 109630191 A CN109630191 A CN 109630191A CN 201811598116 A CN201811598116 A CN 201811598116A CN 109630191 A CN109630191 A CN 109630191A
- Authority
- CN
- China
- Prior art keywords
- slurry
- tailing
- filled
- dehydration
- tailings
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000002002 slurry Substances 0.000 claims abstract description 36
- 239000004568 cement Substances 0.000 claims abstract description 18
- 230000018044 dehydration Effects 0.000 claims abstract description 15
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 15
- 239000010881 fly ash Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 15
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 14
- 239000011707 mineral Substances 0.000 claims abstract description 14
- 239000004576 sand Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000005065 mining Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000011435 rock Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 210000004884 grey matter Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- CCEKAJIANROZEO-UHFFFAOYSA-N sulfluramid Chemical group CCNS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F CCEKAJIANROZEO-UHFFFAOYSA-N 0.000 description 1
- -1 tailings weight Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The present invention relates to a kind of methods for preventing knot top in tailing-filled technique, layering, it is shunk for the second time dehydration method includes the following steps: tailing slurry is (1) pumped into vertical sand warehouse after the dehydration of concentrator first segment, slurry, the tailings being dehydrated are released from sand warehouse after the completion；(2) flyash is added in cement, obtains cementing material；(3) the tailings of the dehydration and the cementing material are sent into high density mineral slurry mixer, meanwhile, water is injected into high density mineral slurry mixer, after agitated, obtains filling slurry；(4) the filling slurry is delivered to underground goaf by way of pump pressure and is filled.The method of the present invention is simple, low in cost, has not only solved the problems, such as cement knot top in tailing-filled technology, but also solves solid waste-flyash handling problems of coal-fired industry, achieves many things at one stroke.
Description
Technical field
The present invention relates to mineral industry solid waste-tailing-filled technical field more particularly to one kind prevent it is tailing-filled
The method that knot is pushed up, is layered in technique.
Background technique
In recent decades, the method for mining by the way of filling is worldwide widely used in a variety of applications with its technical advantage.On the one hand
Mainly due to gradually increasing for underground mining depth, the needs of mine safety and STOPE STABILITY are safeguarded, be on the other hand to improve
Resource recovery and protect environment.Wherein cementing filling technique because can handle mining tailings and it is pollution-free due to by pass
Note plays good impetus without the development of useless mining technique for China or even the world.But in tailing-filled technique, by
In the cementing material generally used for cement, tailings weight, cement is light, and cement can tie top on upper layer, occur being layered and shadow after mixing
Filling effect is rung, causes to fill out hole built on the sand, Yi Fasheng safety accident.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of methods simple, low-cost to prevent tailing-filled technique
The method that middle knot is pushed up, is layered.
To solve the above problems, a kind of method for preventing knot top in tailing-filled technique, layering of the present invention, including
Following steps:
(1) tailing slurry is pumped into vertical sand warehouse after the dehydration of concentrator first segment to be shunk for the second time dehydration, after the completion from sand
Storehouse releases slurry, the tailings being dehydrated；
(2) flyash is added in cement, obtains cementing material；The mass ratio of the cement and the flyash is 4:3 ~ 5:3；
(3) the tailings of the dehydration and the cementing material are sent into high density mineral slurry mixer by the mass ratio of 1:10 ~ 1:12,
Meanwhile water is injected into high density mineral slurry mixer, after agitated, obtain the filling slurry that concentration is 62 ~ 75%；
(4) the filling slurry is delivered to underground goaf by way of pump pressure and is filled.
Compared with the prior art, the present invention has the following advantages:
1, the present invention substantially increases bonding capacity after flyash is added, and enhances the intensity for filling out hole, promotes the exploitation in mine
Safety, fundamentally solves mining mineral resource bring environmental and safety problems.
2, a certain proportion of flyash is added in the present invention in filler cement, so that it is cementing more abundant, stable, can have
Effect prevents rock stratum from leading to surface subsidence due to internal stress changes and causes displacement, protects distant view resource.
3, it after using the method for the present invention, effectively can dispersedly press, control part and region rock stratum slabbing destroy, and improve back production
The safety of operation reduces Stope roof fall accident risk.
4, the method for the present invention is simple, low in cost, has not only solved the problems, such as cement knot top in tailing-filled technology, but also solve
Solid waste-flyash handling problems of coal-fired industry, achieve many things at one stroke.
Specific embodiment
A kind of method for preventing knot top in tailing-filled technique, layering of embodiment 1, comprising the following steps:
(1) tailing slurry is pumped into vertical sand warehouse after the dehydration of concentrator first segment to be shunk for the second time dehydration, after the completion from sand
Storehouse releases slurry, the tailings being dehydrated；
(2) 3kg flyash is added in 4kg cement, obtains cementing material；
(3) the tailings and cementing material being dehydrated are sent into high density mineral slurry mixer by the mass ratio of 1:10, meanwhile, to high density
Water is injected in mineral slurry mixer, after agitated, obtains the filling slurry that concentration is 62 ~ 75%；
(4) filling slurry is delivered to underground goaf by way of pump pressure and is filled.
A kind of method for preventing knot top in tailing-filled technique, layering of embodiment 2, comprising the following steps:
(1) tailing slurry is pumped into vertical sand warehouse after the dehydration of concentrator first segment to be shunk for the second time dehydration, after the completion from sand
Storehouse releases slurry, the tailings being dehydrated；
(2) 3kg flyash is added in 5kg cement, obtains cementing material；
(3) the tailings and cementing material being dehydrated are sent into high density mineral slurry mixer by the mass ratio of 1:12, meanwhile, to high density
Water is injected in mineral slurry mixer, after agitated, obtains the filling slurry that concentration is 62 ~ 75%；
(4) filling slurry is delivered to underground goaf by way of pump pressure and is filled.
A kind of method for preventing knot top in tailing-filled technique, layering of embodiment 3, comprising the following steps:
(1) tailing slurry is pumped into vertical sand warehouse after the dehydration of concentrator first segment to be shunk for the second time dehydration, after the completion from sand
Storehouse releases slurry, the tailings being dehydrated；
(2) 3kg flyash is added in 4.5kg cement, obtains cementing material；
(3) the tailings and cementing material being dehydrated are sent into high density mineral slurry mixer by the mass ratio of 1:11, meanwhile, to high density
Water is injected in mineral slurry mixer, after agitated, obtains the filling slurry that concentration is 62 ~ 75%；
(4) filling slurry is delivered to underground goaf by way of pump pressure and is filled.
Working principle of the present invention: flyash is the fine ash that catching is got off in flue gas after coal combustion, is a kind of artificial volcano
Grey matter mixing material, itself do not have hydraulic gelling property, but in the presence of with powdery and water, can be in room temperature, especially in water
It is chemically reacted under the conditions of heat treatment (steam curing) with calcium hydroxide or other alkaline earth metal hydroxides, generating has water
The compound of hard gelling property becomes a kind of material for increasing intensity and durability.The present invention is a certain proportion of fine coal ash content
It is scattered in the mixture of tailings and cement, flyash can absorb the lesser cement of quality, and form drag effect occurs, will
Cement molecule is embedded into tailings, effectively facilitates cementation, and cement is prevented to be layered.In addition to this, flyash can also play skeleton
Effect, i.e., fix free tailings, increases the intensity for filling out hole, keeps it firmer, stable.
Claims (1)
1. a kind of method for preventing knot top in tailing-filled technique, layering, comprising the following steps:
(1) tailing slurry is pumped into vertical sand warehouse after the dehydration of concentrator first segment to be shunk for the second time dehydration, after the completion from sand
Storehouse releases slurry, the tailings being dehydrated；
(2) flyash is added in cement, obtains cementing material；The mass ratio of the cement and the flyash is 4:3 ~ 5:3；
(3) the tailings of the dehydration and the cementing material are sent into high density mineral slurry mixer by the mass ratio of 1:10 ~ 1:12,
Meanwhile water is injected into high density mineral slurry mixer, after agitated, obtain the filling slurry that concentration is 62 ~ 75%；
(4) the filling slurry is delivered to underground goaf by way of pump pressure and is filled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811598116.4A CN109630191A (en) | 2018-12-26 | 2018-12-26 | A method of preventing knot top, layering in tailing-filled technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811598116.4A CN109630191A (en) | 2018-12-26 | 2018-12-26 | A method of preventing knot top, layering in tailing-filled technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109630191A true CN109630191A (en) | 2019-04-16 |
Family
ID=66077809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811598116.4A Pending CN109630191A (en) | 2018-12-26 | 2018-12-26 | A method of preventing knot top, layering in tailing-filled technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109630191A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1291631A (en) * | 2000-09-06 | 2001-04-18 | 山东黄金集团有限公司焦家金矿 | Cementing filler for mine |
| US6322292B1 (en) * | 1997-01-29 | 2001-11-27 | Lloyd P. Zenari | Backfilling underground voids |
| CN101139178A (en) * | 2007-07-05 | 2008-03-12 | 长沙矿山研究院 | Method and device for preparing high-concentration full-tailing slurry for mine filling |
| CN101723622A (en) * | 2008-10-28 | 2010-06-09 | 华鑫博越国际土木建筑工程技术(北京)有限公司 | Foam tailings cemented filling material and manufacturing method thereof |
| CN102093009A (en) * | 2010-11-26 | 2011-06-15 | 北京科技大学 | Full-tail paste composite material and preparation method thereof |
| CN108863215A (en) * | 2018-06-21 | 2018-11-23 | 徐州中国矿大岩土工程新技术发展有限公司 | Goaf paste body filling slurry and preparation method thereof |
-
2018
- 2018-12-26 CN CN201811598116.4A patent/CN109630191A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6322292B1 (en) * | 1997-01-29 | 2001-11-27 | Lloyd P. Zenari | Backfilling underground voids |
| CN1291631A (en) * | 2000-09-06 | 2001-04-18 | 山东黄金集团有限公司焦家金矿 | Cementing filler for mine |
| CN101139178A (en) * | 2007-07-05 | 2008-03-12 | 长沙矿山研究院 | Method and device for preparing high-concentration full-tailing slurry for mine filling |
| CN101723622A (en) * | 2008-10-28 | 2010-06-09 | 华鑫博越国际土木建筑工程技术(北京)有限公司 | Foam tailings cemented filling material and manufacturing method thereof |
| CN102093009A (en) * | 2010-11-26 | 2011-06-15 | 北京科技大学 | Full-tail paste composite material and preparation method thereof |
| CN108863215A (en) * | 2018-06-21 | 2018-11-23 | 徐州中国矿大岩土工程新技术发展有限公司 | Goaf paste body filling slurry and preparation method thereof |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190416 |
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| RJ01 | Rejection of invention patent application after publication |