CN104446640A - Foam tail mortar and pulping and grouting process thereof - Google Patents
Foam tail mortar and pulping and grouting process thereof Download PDFInfo
- Publication number
- CN104446640A CN104446640A CN201410727603.1A CN201410727603A CN104446640A CN 104446640 A CN104446640 A CN 104446640A CN 201410727603 A CN201410727603 A CN 201410727603A CN 104446640 A CN104446640 A CN 104446640A
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- tailings
- foam
- cement
- slurry
- mortar
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses foam tail mortar which is prepared by adding air foam and an admixture into tail mortar; the tail mortar is formed by mixing cement, tail sand and water; the weight ratio of the cement to the tail sand is 1: 2; the concentration of the tail mortar in percentage by mass is 70%-74%; the air foam is formed by a foaming machine, and the volume of the added air foam accounts for 20% of the volume of the foam tail mortar; and the adding amount of the admixture accounts for 1.5%-2.5% of the total mass of the cement and the tail sand. The invention further discloses a pulping and grouting process of the foam tail mortar. The pulping and grouting process is performed according to the following steps: a) mixing the cement, the tail sand and the water to prepare the tail mortar; b) adding the air foam and the admixture into the tail mortar, and fully mixing and stirring to prepare the foam tail mortar; and c) conveying the prepared foam tail mortar to a grouting hole for filling the hole by a plunger pump in a long range.
Description
Technical field
The invention belongs to mine water management and foundation stabilization reinforcement field, particularly mine curtain grouting stopping up water work; Be specifically related to a kind of the foam tailings slurry and the slurrying grouting process thereof that are applied to cavern filling Grouting engineering.
Background technology
In engineering, solve cave problem by slip casting means, the harm effectively eliminating bad geological phenomenon is an important process.Slurries are injected underground cavern by grouting equipment by Grouting engineering, reach filling cavity, improve the object of the ultimate compression strength in region.In the karst region of south China, soil layer and waterbearing stratum Cave are extremely grown, so the suitability of slurry material is the key of effectively administering unfavorable geology harm.
Along with the development of society and country are to the requirement of building Green Mine, how emissions reduction in mining production, the harmonious win-win building mine and surrounding enviroment develops, change more and more important.The primary discharge material that tailings is exploited as metal mine, bring huge hidden danger to mine safety and surrounding enviroment, so use last mortar in a large number at present in cement injection for exclusion of water engineering, draw materials on the one hand conveniently, cheap, and a large amount of uses of engineering can be met; Turn waste into wealth on the other hand, reduce the tailings quantity discharged in mine, promote the green harmonious development in mine.
But from engineering application state analysis, tailings slurries are easily emanated in course of conveying, the slightly high then difficulty of transportation of concentration, causes the property noted of slurries and transportation performance to reduce.Under river channels during slip casting, as easy as rolling off a log by broken off by water flush due to its segregation phenomenon, cause slurries to outflow with water, be difficult to retain in cave, cause the waste of injecting paste material on the one hand, cause the long-distance sand transport that can not carry out high density slurries on the other hand, therefore slip casting effect is poor.
Summary of the invention
In order to overcome above-mentioned technological deficiency, the invention provides the foam tailings slurry that a kind of suitability is good, concentration is high, transporting is good.In order to realize above-mentioned purpose of the present invention, a kind of foam tailings slurry of the present invention, adds air foam by last mortar and admixture is made; Described last mortar is mixed to form by cement, tailings and water; The weight ratio of described cement and tailings is 1:2; The mass percent concentration of described last mortar is 70% ~ 74%; Described in described air foam, air foam is made up of foaming machine, and described in the volume of air foam that adds be 20% of described foam tailings volume of slurry; Described admixture is water reducer, and its addition accounts for 1.5% ~ 2.5% of the total mass of cement and tailings.
Further, described cement is normal silicate P.032.5 cement; Described tailings is classified tailings, and its particle diameter is within the scope of 10 ~ 100 μm.
Compared to prior art, a kind of foam tailings slurry of the present invention, by adding air foam and admixture in last mortar, make slurries principal constituent tailings realize being wrapped up by air, form a kind of " g., jelly-like " paste body filling thing, improve size performance, reduce the segregation phenomenon under river channels, realize long-distance sand transport not plugging, improve transportation performance and the suitability of high density slurries, thus be conducive to the effective filling realizing soil layer and waterbearing stratum Cave.
The slurrying grouting process that the present invention also provides a kind of foam tailings to starch, carries out according to following steps:
A) cement, tailings and water are mixed and made into last mortar;
B) in last mortar, air foam and admixture is added, and abundant mix and blend, make foam tailings slurry;
C) foam tailings made slurry is delivered to grouting hole perfusion filling cavity by ram pump remote conveying.
Further, described cement is normal silicate P.032.5 cement; Described tailings is classified tailings, and its particle size range is 10 ~ 100 μm; The weight ratio of described cement and tailings is 1:2; The mass percent concentration of described last mortar is 70% ~ 74%; Described air foam is made up of foaming machine, and described in the volume of air foam that adds be 20% of described foam tailings volume of slurry; The addition of described admixture accounts for 1.5% ~ 2.5% of the total mass of cement and tailings.
Compared to prior art, the slurrying grouting process of a kind of foam tailings slurry of the present invention, has the following advantages: (1) take tailings as the main material of slurries, reduces mine tailings quantity discharged, economize on resources, protection of the environment, promote Green harmony mine construction; (2) by adding air foam and admixture in last mortar, slurries principal constituent tailings is made to realize being wrapped up by air, form a kind of " g., jelly-like " paste body filling thing, improve size performance, reduce the segregation phenomenon under river channels, realize long-distance sand transport not plugging, improve transportation performance and the suitability of high density slurries; (3) slurry material wide material sources, cheap, effectively can reduce cement and clear water usage quantity, thus reduce construction investment, can be applicable in Grouting engineering field.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail, wherein:
Fig. 1 is the schema of the slurrying grouting process of a kind of foam tailings slurry of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
All mouth Pb-Zn deposits are the famous flood mines of China, and hydrologic condition is complicated, and soil layer and waterbearing stratum Cave are extremely grown.For solving orebody mining problem, implement drapery injected engineering, local adopts the slip casting of foam tailings slurries.It is as follows that curtain stratum, location discloses situation from top to bottom through boring: Quaternary system clay layer (Q), kettle sky group's dolomitic limestone (C
2+3ht), stone carbon system Datang rank argillaceous limestone (C
1), Devonian system emperor ridge group graniphyric limestone (D
3t
c), wherein kettle sky group's dolomitic limestone is the basal water in mining area, is also the main object that mine surface curtain-grouting is administered.Kettle sky group's dolomite (C at main water entry place, the southeast, mining area
2+3ht) be in absolute altitude 50.61 ~-104.7m, mean thickness 122.16m, in high in the east and low in the west, this section discloses solution cavity meter 89 altogether, and boring is shown in that hole rate is 94.7%, and the solution cavity being greater than 1m has 41, accounts for 46.1%, and maximum solution cavity is up to 9.5m.
A kind of foam tailings slurry provided by the invention, adds air foam by last mortar and admixture is made;
Described last mortar is mixed to form by cement, tailings and water; The weight ratio of described cement and tailings is 1:2; The concentration of described last mortar is 70% ~ 74%; Described cement is normal silicate P.032.5 cement; Described tailings is classified tailings, and its main component and content are: SiO
2: 24.52%, Al
2o
3: 3.58%, CaO:15.19%.The particle diameter of described classified tailings is within the scope of 10 ~ 100 μm, and its 28 days toxicity test results do not exceed standard.
Described air foam is made up of foaming machine, and described in the volume of air foam that adds be 20% of described foam tailings volume of slurry, but during practice of construction, meeting froth breaking after certain hour stirs, froth breaking amount is 2% ~ 5%, after stirring by high-pressure pump be delivered to cavity carry out the filling of densification formula time, froth breaking amount reaches 5% ~ 7%.The present embodiment admixture used is naphthalene series high-efficiency water-reducing agent, and its addition accounts for 1.5% ~ 2.5% of the total mass of cement and tailings.
Refer to table 1, the foam tailings slurry proportioning that it mainly uses for Grouting engineering and performance perameter table.
Table 1 foam tailings slurry proportioning and performance perameter
In table 1,
note 1place's concentration one column data is the mass percent concentration of last mortar,
note 2place cement, tailings and water three column data be the per-cent that three's quality accounts for last mortar quality;
note 3place's air foam volume one column data accounts for the per-cent of last mortar volume for added air foam volume;
note 3place's admixture one column data accounts for the per-cent of cement and tailings total mass for added admixture quality.
As can be seen from Table 1, when the volume of the described air foam added is 20% of described foam tailings volume of slurry, last mortar concentration be the flow valuve of the foam mortar slurries of 70% ~ 74% all at more than 170mm, realize effectively carry not plugging at a distance, the requirement of general Grouting engineering can be met.When the addition of described admixture accounts for 1.5% ~ 2.5% of the total mass of cement and tailings, last mortar concentration is that the foam mortar slurries of 70% ~ 74% are when flow valuve meets the demands, presetting period significantly shortens, and effectively avoids slurries discrete in water, carries High concretion rate.When last mortar concentration reaches more than 72%, the flow valuve of foam mortar slurries does not have too large reduction, but final setting time shortens, and within 3 days, ultimate compression strength improves.
As can be seen from the foam mortar slurries Seed harvest ultimate compression strength parameter of table 1,3 days ultimate compression strength of Seed harvest are generally at more than 1Mpa, and within 28 days, ultimate compression strength is substantially at more than 3Mpa, complete engineering demands.
Compared to prior art, a kind of foam tailings slurry of the present invention, by adding air foam and admixture in last mortar, make slurries principal constituent tailings realize being wrapped up by air, form a kind of " g., jelly-like " paste body filling thing, improve size performance, reduce the segregation phenomenon under river channels, realize long-distance sand transport not plugging, improve transportation performance and the suitability of high density slurries, thus be conducive to the effective filling realizing soil layer and waterbearing stratum Cave.
Refer to Fig. 1, it is the schema of the slurrying grouting process of a kind of foam tailings slurry of the present invention.The slurrying grouting process that the present invention also provides a kind of foam tailings to starch, carries out according to following steps:
A) cement, tailings and water are mixed and made into last mortar; Particularly, described cement is normal silicate P.032.5 cement; Described tailings is classified tailings, and its particle size range is 10 ~ 100 μm; Described tailings is transported to foam tailings slurry stirrer from tailings stockyard by rotary conveyor and automatic gauging instrument and adds water and described cement mixing and stirring, makes last mortar.The weight ratio of described cement and tailings is 1:2; The concentration of described last mortar is 70% ~ 74%.
B) in last mortar, air foam and admixture is added, and abundant mix and blend, make foam tailings slurry; Particularly, the whipping agent purchased in market, according to working-yard objective condition thin up 20 ~ 40 times, makes bubble solution; Described bubble solution makes air foam by foaming machine, and adds in foam tailings slurry stirrer; Admixture is starched stirrer through impeller pump and automatic gauging instrument conveying toward foam tailings, and fully mixes with last mortar and air foam, make foam tailings slurry.The volume of the described air foam added is 20% of described foam tailings volume of slurry; The addition of described admixture accounts for 1.5% ~ 2.5% of the total mass of cement and tailings.The slurry of described foam tailings slurry can be piled vertical, and rich surface is flexible, without caving in phenomenon, and does not emanate in water.
The component of described whipping agent and weight percent thereof be respectively: 1% ~ 8% alkyl-sulphate, 2% ~ 13% sulfated alkyl ether, 10% ~ 32% anti-plain boiled water, 1% ~ 5% suds-stabilizing agent, 42% ~ 86% water.Described foaming machine is prior art, the foam device disclosed in utility model patent " foam mortar preparation device " that can be CN2017633U see publication number.
C) foam tailings made slurry is delivered to grouting hole perfusion filling cavity by ram pump remote conveying.
After the engineering construction of mine surface curtain completes, at complex geologic conditions and inspection of construction hole, weak location, engineering is verified.After tested, slip casting consolidating strength is reliable, illustrates that slurries filling effect in cave is better, reaches the object of filling cavity water blockoff.
Compared to prior art, the slurrying grouting process of a kind of foam tailings slurry of the present invention, has the following advantages: (1) take tailings as the main material of slurries, reduces mine tailings quantity discharged, economize on resources, protection of the environment, promote Green harmony mine construction; (2) by adding air foam and admixture in last mortar, slurries principal constituent tailings is made to realize being wrapped up by air, form a kind of " g., jelly-like " paste body filling thing, improve size performance, reduce the segregation phenomenon under river channels, realize long-distance sand transport not plugging, improve transportation performance and the suitability of high density slurries; (3) slurry material wide material sources, cheap, effectively can reduce cement and clear water usage quantity, thus reduce construction investment, can be applicable in Grouting engineering field.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, therefore everyly do not depart from technical solution of the present invention content, the any amendment done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (4)
1. a foam tailings slurry, is characterized in that: described foam tailings slurry adds air foam by last mortar and admixture is made;
Described last mortar is mixed to form by cement, tailings and water; The weight ratio of described cement and tailings is 1:2; The mass percent concentration of described last mortar is 70% ~ 74%;
Described in described air foam, air foam is made up of foaming machine, and described in the volume of air foam that adds be 20% of described foam tailings volume of slurry;
Described admixture is water reducer, and its addition accounts for 1.5% ~ 2.5% of the total mass of cement and tailings.
2. a kind of foam tailings slurry according to claim 1, is characterized in that: described cement is normal silicate P.032.5 cement; Described tailings is classified tailings, and its particle diameter is within the scope of 10 ~ 100 μm.
3. a slurrying grouting process for foam tailings slurry, carries out according to following steps:
A) cement, tailings and water are mixed and made into last mortar;
B) in last mortar, air foam and admixture is added, and abundant mix and blend, make foam tailings slurry;
C) foam tailings made slurry is delivered to grouting hole perfusion filling cavity by ram pump remote conveying.
4. the slurrying grouting process of a kind of foam tailings slurry according to claim 3, is characterized in that: described cement is normal silicate P.032.5 cement; Described tailings is classified tailings, and its particle size range is 10 ~ 100 μm; The weight ratio of described cement and tailings is 1:2; The mass percent concentration of described last mortar is 70% ~ 74%; Described air foam is made up of foaming machine, and described in the volume of air foam that adds be 20% of described foam tailings volume of slurry; The addition of described admixture accounts for 1.5% ~ 2.5% of the total mass of cement and tailings.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410727603.1A CN104446640A (en) | 2014-12-03 | 2014-12-03 | Foam tail mortar and pulping and grouting process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410727603.1A CN104446640A (en) | 2014-12-03 | 2014-12-03 | Foam tail mortar and pulping and grouting process thereof |
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| CN104446640A true CN104446640A (en) | 2015-03-25 |
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| CN201410727603.1A Pending CN104446640A (en) | 2014-12-03 | 2014-12-03 | Foam tail mortar and pulping and grouting process thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106495636A (en) * | 2016-11-08 | 2017-03-15 | 中钢集团马鞍山矿山研究院有限公司 | A kind of tailing foam mortar of underground mine exploitation filling |
| CN109821278A (en) * | 2019-03-11 | 2019-05-31 | 北京科技大学 | For improving the composition of solid particles sediment effect, comprising its dense synergist and preparation method and application |
| CN110561617A (en) * | 2019-10-12 | 2019-12-13 | 长沙矿山研究院有限责任公司 | Full-tailing slurry filling system with low density and high strength |
| CN112195912A (en) * | 2020-08-20 | 2021-01-08 | 山东大学 | Intelligent filling device and method for micro-foam material |
| CN114407214A (en) * | 2022-01-28 | 2022-04-29 | 广东高景太阳能科技有限公司 | Automatic regulating system for concentration of large-size silicon wafer cutting mortar liquid |
| GB2594572B (en) * | 2020-03-11 | 2023-11-22 | Colin Malcolmson David | Delivery device |
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| CN1712197A (en) * | 2004-06-23 | 2005-12-28 | 牛宁民 | Cement foaming apparatus |
| CN101294434A (en) * | 2008-06-17 | 2008-10-29 | 薛锋堂 | Novel composite thermal insulation building block and producing method thereof |
| 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 |
| CN102261262A (en) * | 2010-08-13 | 2011-11-30 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | High-performance foam mortar filling method for mine stope |
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2014
- 2014-12-03 CN CN201410727603.1A patent/CN104446640A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1712197A (en) * | 2004-06-23 | 2005-12-28 | 牛宁民 | Cement foaming apparatus |
| CN101294434A (en) * | 2008-06-17 | 2008-10-29 | 薛锋堂 | Novel composite thermal insulation building block and producing method thereof |
| 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 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106495636A (en) * | 2016-11-08 | 2017-03-15 | 中钢集团马鞍山矿山研究院有限公司 | A kind of tailing foam mortar of underground mine exploitation filling |
| CN109821278A (en) * | 2019-03-11 | 2019-05-31 | 北京科技大学 | For improving the composition of solid particles sediment effect, comprising its dense synergist and preparation method and application |
| CN110561617A (en) * | 2019-10-12 | 2019-12-13 | 长沙矿山研究院有限责任公司 | Full-tailing slurry filling system with low density and high strength |
| GB2594572B (en) * | 2020-03-11 | 2023-11-22 | Colin Malcolmson David | Delivery device |
| CN112195912A (en) * | 2020-08-20 | 2021-01-08 | 山东大学 | Intelligent filling device and method for micro-foam material |
| CN114407214A (en) * | 2022-01-28 | 2022-04-29 | 广东高景太阳能科技有限公司 | Automatic regulating system for concentration of large-size silicon wafer cutting mortar liquid |
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Application publication date: 20150325 |
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