CN102603259B - Anchor rod binder - Google Patents
Anchor rod binder Download PDFInfo
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- CN102603259B CN102603259B CN201110431969.0A CN201110431969A CN102603259B CN 102603259 B CN102603259 B CN 102603259B CN 201110431969 A CN201110431969 A CN 201110431969A CN 102603259 B CN102603259 B CN 102603259B
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- binding agent
- anchor pole
- cement
- anchor
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Abstract
The invention discloses an anchor rod binder, which consists of 65-75 percent of cement, 18-25 percent of expansive cement, 1-3 percent of water reducing agent and 5-7 percent of gypsum according to weight percentage, wherein the total amount of all the components is 100 percent; the components are stirred evenly, packed into a packaging bag and sewn into a cylinder shape. The anchor rod binder has the advantages of short solidification time, high early strength, small penetration resistance, convenience in installation, good expansibility in proper degree and the like, can meet different support requirements, and is suitable for both full anchors and end anchors.
Description
Technical field
The present invention relates to a kind of binding agent for mine support, be specifically related to a kind of anchor pole binding agent.
Background technology
Bolt supporting is a kind of form of roadway support, is at home and abroad used widely.Anchor pole is inserted in advance in tunnel or chamber surrounding rock body Zuan Hao hole, utilize the special tectonic of its head, the body of rod and afterbody supporting plate (also can), or depend on cohesive action country rock and rock mass stability are combined and produce suspension effectiveness, compound beam effect, reinforcing effect, to reach the object of supporting, have that cost is low, supporting effect good, easy and simple to handle, use flexibly, take the advantages such as construction headroom is few.While adopting bolt supporting, need to use anchor pole binding agent that anchor pole is cemented together with ore deposit rock around, otherwise loose ore deposit rock is subject to cut gradually after weathering, makes anchor pole not have anchorage effect.Patent application " resin-bonded mastic and Anchor Agent for Anchor Agent " (application number 200910131555.9, publication number CN101508540, an open day 2009.08.19) disclose and a kind ofly can improve ultimate compression strength, realize the Anchor Agent of high bonding force, but the setting time of this Anchor Agent is long, early strength is low, and price is higher.
Summary of the invention
In order to overcome above-mentioned problems of the prior art, the object of this invention is to provide a kind of anchor pole binding agent, there is shorter setting time and higher early strength, and install and use easy, economical.
For achieving the above object, the technical solution adopted in the present invention is, a kind of anchor pole binding agent, and by weight percentage, the cement by 65%～75%, 18%～25% expansive cement, 1%～3% water reducer and 5%～7% gypsum form, and each component total amount is 100%.
By weight percentage, the cement by 65%～75%, 18%～25% expansive cement, 1%～3% water reducer and 5%～7% gypsum form anchor pole binding agent, and each component total amount is 100%; Each component stirs, and packs into and in packing bag, is stitched into tubular.
Packing bag adopts macrofiber drainage paper to make.
Packing bag is of a size of Φ 30mm * 230mm～Φ 32mm * 230mm.
Water reducer adopts polycarboxylate high performance water-reducing agent.
Anchor pole binding agent of the present invention compared with prior art, the swelling property of have that setting time is short, early strength is high, penetration resistance is little, appropriateness is good, and invest little, instant effect, the advantage such as raw material sources are extensive, market outlook are wide.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail.
Anchor pole binding agent of the present invention, by weight percentage, the cement by 65～75%, 18～25% expansive cement, 1～3% water reducer and 5～7% gypsum form, and each component total amount is 100%.
Above-mentioned each component is stirred, pack in the packing bag that macrofiber drainage paper makes, then, with line, this packing bag is stitched into tubular, make binding agent scroll, and seal this binding agent scroll up for safekeeping.
This anchor pole binding agent scroll size can determine according to the specific requirement of using, and stock size is Φ 30mm * 230mm～Φ 32mm * 230mm, weighs 200～210g.For protection against the tide, every five binding agent scrolls pack in a Plastic film Bag, seal into bag, every 14 packed cartons.
Cement adopts ordinary Portland cement, preferably 625# ordinary Portland cement.Water reducer adopts polycarboxylate high performance water-reducing agent.Expansive cement is expansion aluminosulfate cement.
The anchor rod body material that this anchor pole binding agent is supporting and the selection of structural parameter: the supporting requirement in comprehensive mine engineering geological condition and tunnel, it is the Twisted Steel of Φ 18mm that mating anchor bolt body generally adopts diameter, anchor force is not less than 65kN.The length of this Twisted Steel can be definite according to practical situation, and in one end machining screw of determining the Twisted Steel of length.
When anchor pole binding agent of the present invention is used for to bolt supporting, first in the big gun hole that needs Drilling Φ 32～Φ 40mm on the rock mass of anchoring, the binding agent scroll of making is immersed to 60～90s in clear water, then the binding agent scroll after soaking is sent in bolthole with tamper, the long anchor pole of general 1.8m packs 5～7 volume binding agent scrolls into, if rock crushing, requires to strengthen anchorage length, can suitably increase the quantity of binding agent scroll; Insert afterwards anchor pole, after 1 hour, put on backing plate, and tightening nuts.
The chemical reaction essence of anchor pole binding agent of the present invention is exactly research and analysis 3CaOSiO
2-2CaOSiO
2-3CaO3Al
2o
3caSO
4-CaSO
4-H
2the chemical transformation occurring in O quinary system, the i.e. hydration process of anchor pole binding agent; In this hydration process, mainly there is following hydration reaction in the tricalcium silicate in binding agent:
3CaO·SiO
2+nH
2O→xCaO-SiO
2·yH
2O)+(3-x)?Ca(OH)
?2
The hydration process of the Dicalcium Phosphate (Feed Grade) in material is very similar with tricalcium silicate, also have inductive phase, acceleration period etc., but hydration rate is much slower than tricalcium silicate, is about 1/20 of tricalcium silicate hydration rate, and the hydration reaction of Dicalcium Phosphate (Feed Grade) can adopt following formula to represent:
2CaO·SiO
2+mH
2O→xCaO-SiO
2·yH
2O)+(2-x)?Ca(OH)?
2
Calcium sulphoaluminate hydration reaction in material as shown in the formula:
3CaO·3Al
2O
3·CaSO
4+4CaSO
4+38H
2O
→3CaO·3Al
2O
3·3CaSO
4·32H
2O+2(Al
2O
3·3H
2O)(gel)
Water reducer plays the effect of the time of coagulation that shortens material; Expansion aluminosulfate cement can make material have appropriate swelling property; Gypsum can make material have appropriate early strength and swelling property.If sulplo-aluminate too high levels can affect the intensity of silicate cement, the very few volumetric expansion effect that can not reach expection of content.Above material and each component proportion are the preferred embodiments of the proportioning test of multiple material being determined by indoor.
A kind of novel, desirable fixing agent for anchor poles that is applicable to mine that anchor pole binding agent of the present invention is comprised of silicate cement and multiple modified additive, has reliable and stable adhesive property and intensity, suitable time of coagulation, less penetration resistance, expansion character and the early strength high of appropriateness.Be mainly used in mine and adopt portland cement anchor rolling rod to carry out supporting to rock mass, can meet the supporting requirement under various ore and rock conditions, guarantee the firm and safety in tunnel.These products material wide material sources, cheap, production technique is simple, is that a kind of anchoring effect is good, and supporting capacity is large, of many uses, easy to use, good in economic efficiency desirable New Supporting material, tool has the following advantages:
1) bond after 1 day, the anchor force of anchor pole all, more than 77.51kN, illustrates that the early strength of this anchor pole binding agent is high, bearing capacity is large, and its technical feature is better than pipe-seam type anchor rod, has met the supporting requirement of broken rock.
2) penetration resistance is little, and rockbolt installation is convenient, and this anchor pole binding agent scroll packs in big gun hole after immersion, at the bottom of the full anchor anchor bar body of long 1.7～2.0m can push hole with hand, an about 5min of anchor pole is installed.
3) anchor pole is had to good rustless property, make binding agent anchor pole both can make permanent supporting, can do temporary supporting again.
4) a set of binding agent anchor pole cost reduces by 50% than pipe-seam type anchor rod.
5) can be widely used in the underground workss such as metallurgy, coal, chemical industry, railway, water power, civil engineering installation and national defence.
In order to meet different supporting requirements, make anchor pole binding agent of the present invention both be applicable to total length bonding, be also applicable to partial-length bonding, anchor pole binding agent of the present invention forms the series product with different performance.
embodiment 1
By weight percentage, get respectively cement 65%, expansion aluminosulfate cement 25%, water reducer 3% and gypsum 7%.Each component is stirred, pack macrofiber drainage paper into and make the packing bag that is of a size of Φ 30 * 230mm, with the synthetic tubular of linear slit, make binding agent scroll, seal this binding agent scroll up for safekeeping.On the spot tuff of quartzy angle, beat the bolthole that diameter is Φ 32mm, this binding agent scroll is immersed to 60s in clear water, take out, at the bottom of sending into bolthole hole with tamper, in this bolthole, pack successively 5 volume binding agent scrolls into, insert anchor pole, after 1 hour, put on backing plate, and tightening nuts.
After testing, the density of this anchor pole binding agent is 1.530 g/cm
3water-intake rate is 28.2～31.5%, 5 minutes 50 seconds～6 minutes presetting period, final setting time 5 minutes 30 seconds～8 minutes, the ultimate compression strength under normal temperature: to solidify 1 day be 24.1 MPa, solidify 3 days is 26.5 MPa, solidify 7 days is 43.6 MPa, solidify 14 days is 52.6 MPa, solidify 28 days for 61.5MPa; Early stage pull strength under normal temperature: to solidify 1 hour be 123.45 MPa, to solidify 4 hours be 273.10 MPa; Penetration resistance is 0.22 Mpa; Solidifying the linear expansivity recording for 28 days is 2.38%; Be greater than 6 months storage period.
Adopt ML20 type rockbolt tension meter to carry out pull-out test to anchor pole; Result is all the fracture of anchor rod body screw thread place, and between anchor rod body and binding agent, binding agent and hole wall, does not produce relative displacement at all, has absolutely proved that the anchor force of this anchor pole binding agent is far longer than the breaking force of anchor rod body.Experiment results proved: this anchor pole binding agent bonding is all right, and anchor pole bearing capacity is large, and axial deformation is little, very favourable to controlling rock stability.
embodiment 2
By weight percentage, get respectively cement 75%, expansion aluminosulfate cement 18%, water reducer 3% and gypsum 7%.Each component is broken, stir, pack macrofiber drainage paper into and make the packing bag that is of a size of Φ 32 * 230mm, with the synthetic tubular of linear slit, make binding agent scroll, this binding agent scroll is sealed up for safekeeping.On the plumbous zinc ore of bulk, beat the bolthole that diameter is Φ 40, this binding agent scroll is immersed to 90s in clear water, take out, with tamper, send in bolthole, in this bolthole, pack successively 7 volume binding agent scrolls into, insert anchor pole, after 1 hour, put on backing plate, and tightening nuts.
After testing, the density of this anchor pole binding agent is 1.490 g/cm
3water-intake rate is 29.6～31.6%, 3 minutes 30 seconds～4 minutes 10 seconds presetting period, final setting time 4 minutes 50 seconds～5 minutes, the ultimate compression strength under normal temperature: to solidify 1 day be 29.7 MPa, solidify 3 days is 34.9 MPa, solidify 7 days is 37.3 MPa, solidify 14 days is 45.1 MPa, solidify 28 days for 47.8Mpa.Early stage pull strength under normal temperature: solidify 1 hour for 201.38MPa, to solidify 4 hours be 325.08 MPa; Penetration resistance is 0.53 Mpa; Solidifying the linear expansivity recording for 28 days is 9.88%; Be greater than 6 months storage period.
Adopt ML20 type rockbolt tension meter to carry out pull-out test to anchor pole; Result is all the fracture of anchor rod body screw thread place, and between anchor rod body and binding agent, binding agent and hole wall, does not produce relative displacement at all, has absolutely proved that the anchor force of this anchor pole binding agent is far longer than the breaking force of anchor rod body.Experiment results proved: this anchor pole binding agent bonding is all right, and anchor pole bearing capacity is large, and axial deformation is little, very favourable to controlling rock stability.
embodiment 3
By weight percentage, get respectively cement 70%, expansion aluminosulfate cement 22%, water reducer 1% and gypsum 7%.Each component is broken, stir, pack macrofiber drainage paper into and make the packing bag that is of a size of Φ 31 * 230mm, with the synthetic tubular of linear slit, make binding agent scroll, this binding agent scroll is sealed up for safekeeping.On the plumbous zinc ore rock of disseminated, beat the bolthole that diameter is Φ 36, by after 75s in this anchor pole binding agent scroll immersion clear water, in bolthole, with waddy, send into and pack successively 6 this binding agent of volume scrolls into, insert anchor pole, after 1 hour, put on backing plate, and tightening nuts.
After testing, the density of this anchor pole binding agent is 1.381 g/cm
3water-intake rate is 30.0～32.7%, 4 minutes 30 seconds～4 minutes 40 seconds presetting period, final setting time 6 minutes～6 minutes 10 seconds, the ultimate compression strength under normal temperature: to solidify 1 day be 18.6 MPa, solidify 3 days is 25.9 MPa, solidify 7 days for 33.1MPa, solidify 14 days for 37.7MPa, solidify 28 days for 47.7Mpa.Early stage pull strength under normal temperature: solidify 1 hour for 31.3MPa, to solidify 4 hours be 54.94 MPa; Penetration resistance is 0.10Mpa; Solidifying the linear expansivity recording for 28 days is-0.12%; Be greater than 6 months storage period.
Adopt ML20 type rockbolt tension meter to carry out pull-out test to anchor pole; Result is all the fracture of anchor rod body screw thread place, and between anchor rod body and binding agent, binding agent and hole wall, does not produce relative displacement at all, has absolutely proved that the anchor force of this anchor pole binding agent is far longer than the breaking force of anchor rod body.Experiment results proved: this anchor pole binding agent bonding is all right, and anchor pole bearing capacity is large, and axial deformation is little, very favourable to controlling rock stability.
embodiment 4
By weight percentage, get respectively cement 70%, expansion aluminosulfate cement 21%, water reducer 3% and gypsum 6%.Each component is broken, stir, pack macrofiber drainage paper into and make the packing bag that is of a size of Φ 32 * 230mm, with the synthetic tubular of linear slit, make binding agent scroll, this binding agent scroll is sealed up for safekeeping.On the spot tuff of quartzy angle, beat the bolthole that diameter is Φ 34, this binding agent scroll is immersed to 65s in clear water, take out, with tamper, send in bolthole, in this bolthole, pack successively 7 volume binding agent scrolls into, insert anchor pole, after 1 hour, put on backing plate, and tightening nuts.
After testing, the water-intake rate of this anchor pole binding agent is 30.2～33.0%, minutes 10 seconds, 4 minutes presetting periods～4, final setting time 6 minutes～6 minutes 30 seconds, the ultimate compression strength under normal temperature: to solidify 1 day be 25.7 MPa, solidify 3 days is 25.3 MPa, solidify 7 days for 42.0MPa, solidify 14 days for 48.4MPa, solidify 28 days for 62.3Mpa.Early stage pull strength under normal temperature: solidify 1 hour for 34.83MPa, solidify 4 hours for 167.59MPa; Penetration resistance is 0.03Mpa; Solidifying the linear expansivity recording for 28 days is 0.07%; Be greater than 6 months storage period.
Adopt ML20 type rockbolt tension meter to carry out pull-out test to anchor pole; Result is all the fracture of anchor rod body screw thread place, and between anchor rod body and binding agent, binding agent and hole wall, does not produce relative displacement at all, has absolutely proved that the anchor force of this anchor pole binding agent is far longer than the breaking force of anchor rod body.Experiment results proved: this anchor pole binding agent bonding is all right, and anchor pole bearing capacity is large, and axial deformation is little, very favourable to controlling rock stability.
Claims (5)
1. an anchor pole binding agent, is characterized in that, by weight percentage, the ordinary Portland cement by 65%～75%, 18%～25% expansive cement, 1%～3% water reducer and 5%～7% gypsum form, and each component total amount is 100%;
Described expansive cement adopts expansion aluminosulfate cement.
2. anchor pole binding agent according to claim 1, is characterized in that, by weight percentage, the cement by 65%～75%, 18%～25% expansive cement, 1%～3% water reducer and 5%～7% gypsum form this anchor pole binding agent, and each component total amount is 100%; Each component stirs, and packs into and in packing bag, is stitched into tubular.
3. anchor pole binding agent according to claim 2, is characterized in that, described packing bag adopts macrofiber drainage paper to make.
4. anchor pole binding agent according to claim 2, is characterized in that, described packing bag is of a size of Φ 30mm * 230mm～Φ 32mm * 230mm.
5. anchor pole binding agent according to claim 1 and 2, is characterized in that, described water reducer adopts polycarboxylate high performance water-reducing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110431969.0A CN102603259B (en) | 2011-12-21 | 2011-12-21 | Anchor rod binder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110431969.0A CN102603259B (en) | 2011-12-21 | 2011-12-21 | Anchor rod binder |
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| Publication Number | Publication Date |
|---|---|
| CN102603259A CN102603259A (en) | 2012-07-25 |
| CN102603259B true CN102603259B (en) | 2014-01-15 |
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|---|---|---|---|
| CN201110431969.0A Active CN102603259B (en) | 2011-12-21 | 2011-12-21 | Anchor rod binder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108033752B (en) * | 2017-12-12 | 2020-07-28 | 甘肃智通科技工程检测咨询有限公司 | Superstrong composite anchoring agent |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1132770A (en) * | 1995-04-04 | 1996-10-09 | 楼文星 | Powdered adhesive for building |
| CN1396138A (en) * | 2002-07-11 | 2003-02-12 | 武汉武大巨成加固实业有限公司 | Fast anchor type inorganic viscose grouting matenial and its preparing process |
-
2011
- 2011-12-21 CN CN201110431969.0A patent/CN102603259B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1132770A (en) * | 1995-04-04 | 1996-10-09 | 楼文星 | Powdered adhesive for building |
| CN1396138A (en) * | 2002-07-11 | 2003-02-12 | 武汉武大巨成加固实业有限公司 | Fast anchor type inorganic viscose grouting matenial and its preparing process |
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| CN102603259A (en) | 2012-07-25 |
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