CN102635378A - New process for high-strength resin anchor construction - Google Patents
New process for high-strength resin anchor construction Download PDFInfo
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- CN102635378A CN102635378A CN2012101176191A CN201210117619A CN102635378A CN 102635378 A CN102635378 A CN 102635378A CN 2012101176191 A CN2012101176191 A CN 2012101176191A CN 201210117619 A CN201210117619 A CN 201210117619A CN 102635378 A CN102635378 A CN 102635378A
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- Prior art keywords
- anchor
- rod body
- hex nut
- nut
- rod
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 239000011347 resin Substances 0.000 title claims abstract description 28
- 229920005989 resin Polymers 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title abstract description 9
- 230000008569 process Effects 0.000 title abstract description 6
- 239000011435 rock Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 238000005516 engineering process Methods 0.000 claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000000295 complement effect Effects 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000002360 explosive Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005065 mining Methods 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 abstract description 4
- 230000008093 supporting effect Effects 0.000 description 9
- 238000009434 installation Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241000405414 Rehmannia Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a new process for high-strength resin anchor construction, comprising the following steps and equipment of: selecting a rod body (1) with left hand threads, wherein the yield strength of the rod body (1) is not less than 355MPa, two nuts, namely hex nuts (3) and (4) matched with the diameter and the thread direction of the rod body are arranged at one end of the rod body (1) and the hex nut (3) is next to the hex nut (4); drilling by using a pneumatic rock drill7655, removing water and dross in the hole after the drilling is completed and putting a resin roll and the anchor rod body (1) into the hole; connecting the rock drill with the hex nut (4) of the anchor rod by adopting a simple connector, rotating and stirring, dismounting the two nuts at the tail part of the anchor rod body after the roll is solidified; and sheathing a tray (2) into the rod body (1), screwing on a nut, tightening the nut by using a pneumatic impact wrench, namely, applying a certain pre-tightening force. The process disclosed by the invention is suitable for support of various mine roadways, chambers and the like and has the advantages of safety, reliability, good support effect, rapid construction speed and capability of greatly improving the support work efficiency and guaranteeing the safe operation of mining work.
Description
Technical field
The invention belongs to the bolt support construction field; Be specifically related to the technology of underground constructions employing anchor bolt constructions such as mine working, chamber; When being applicable to supportings such as all kinds of mine workings, chamber; Adopt the resin anchor support form, reach the purpose of quick, big anchored force supporting, guarantee the safe operation of mine working, chamber.
Background technology
At present, China mine becomes to going on foot the mining in the deep gradually, and deep mining is accompanied by a series of problem, and the activity of wherein pressing seems particularly outstanding.Ground pressure activity is a kind of natural phenomena by stress, lithology, rock mass structure control, is the inevitable consequence that production ore is upset stress of primary rock balance.Underground pressure management not only inquires for reason, influence factor, the active mechanism of producing the activity of dried rhizome of rehmannia pressure, and will establish the ground pressure-controlled method that meets mine reality.Along with adopting dark increase, geostatic stress increases, and compares with the superficial part exploitation, and more soft-rock tunnel will appear in deep mining, and roadway support is difficulty more.Because disaster mainly occurs in the tunnel, crucial technology is roadway support.
At present, use at most, the widest ground pressure-controlled method, surely belong to supporting.Bolt support, cable bolting, tunnel-surrounding whitewashing, anchor pole add methods such as steel band (beam) complexed metal net supporting, improve country rock intensity, optimize the country rock stress condition and compose dis environment.
Bolt support is the axial force through anchor pole; Change the stress state of certain limit rock mass in the country rock into three dimension stress by unidirectional or bi-directional compression; Thereby improve its hoop compressive strength; Make the compression band both can bear himself weight, can bear certain external load again, make it control surrouding rock deformation effectively.
The mechanical characteristic of resin anchor is anchor pole and surrounding rock interaction result, is the mechanics reflection of the practical working situation of anchor pole constraint surrouding rock deformation.Adopt high-strength prestressed anchor pole---resin anchor; Can apply enough pretightning forces to country rock immediately, not only can stop country rock ground initial deformation, can also eliminate the initial slippage of anchor pole self; And can apply certain pretightning force to country rock, the cross section under tension tensile stress of roadway surrounding rock is reduced.Anchor pole has improved the shear strength of country rock greatly to the frictional force that country rock applies certain pretightning force generation, and then has avoided roadway surrounding rock to occur the crack too early, slows down the reduction of country rock.The anchored force of resin anchor is bigger, and the gelling curing rate is fast, can in several hours, obtain higher first anchor ability, thereby produces anchorage effect rapidly, effectively.Because the unrivaled superiority of resin anchor makes it replace traditional anchor pole-friction-type anchor metal (claiming pipe-seam type anchor rod, split anchor pole etc. again) that mine support is adopted gradually.
But the prior resin anchor rod construction process is more loaded down with trivial details, complicated, consuming time than friction-type anchor metal (claiming pipe-seam type anchor rod, split anchor pole etc. again) construction technology.The conventional resins anchor rod construction process adopts 7665 air rock drill borings, installation, stirring etc.7665 hammer drill have been compared following shortcoming with 7655 hammer drill: (1) drilling efficiency is low.The drilling efficiency of 7665 hammer drill is lower than 7655 hammer drill.(2) air leg is unidirectional.In the actual mechanical process, after can often occurring holing, must manual work pack up air leg, waste time and energy.(3) workman is accustomed to using 7655 air rock drills.In resin anchor construction practical operation, mine worker occurs and use the boring of 7655 hammer drill, use the installation of 7665 hammer drill, condition of stirring, the installation labor manpower of wind, water pipe, time etc., operating efficiency is extremely low.Therefore, how to improve a great problem that the resin anchor speed of application becomes the puzzlement mine.
Summary of the invention
The object of the invention is exactly the technology shortcoming loaded down with trivial details, complicated, consuming time that exists to the conventional resins anchor rod construction process, and a kind of high-intensity resin anchor bolt construction new technology is provided.
For realizing above-mentioned purpose of the present invention, high-intensity resin anchor bolt construction new technology of the present invention adopts following technology, equipment:
1) select the body of rod of left hand thread for use, the yield strength of the body of rod is not less than 355MPa, at an end of the body of rod two the adjacent hex nuts that are complementary with body of rod diameter, thread rotary orientation is installed;
2) with the boring of 7655 air rock drills, after boring finishes, fall water and scum silica frost in the hole clearly, in the hole, fill in resin explosive roll, anchor rod body;
3) adopt simple and easy connector to connect hammer drill and anchor nut, be rotated stirring, treat that powder stick solidifies after; Unload two nuts of anchor rod body afterbody, pack into the body of rod to pallet then, the nut of screwing on; With the pneumatic impact wrench nut of screwing, promptly apply certain pretightning force; Described simple and easy connector is to be fixedly connected with drill steel by sleeve to constitute, and the cavity shape of sleeve and hex nut profile are complementary, and the profile of drill steel and the installing hole of hammer drill are complementary.
Described anchor rod body adopts indented bars; Described pallet adopts the butterfly pallet; The center of described drill steel is provided with water injection hole.
Compare with traditional construction technology; Factors such as construction technology integrated construction plant equipment of the present invention, the basic measure of constructing, constructor's custom; Directly use the boring of 7655 air rock drills, install, stir, effectively reduced construction link, practiced thrift the engineering time; Promoted efficiency of construction, for the supporting that guarantees mine working, quick, the big anchored force of chamber provides new technology.
When construction technology of the present invention is applicable to supporting such as all kinds of mine workings, chamber, adopt the resin anchor support form, reach fast, the purpose of big anchored force supporting, guarantee the safe operation of mine working, chamber.
High-intensity resin anchor bolt construction new technology of the present invention has been carried out number of applications at certain underground mine mineral building and ramp.Application shows, this new resin anchor construction technology, and safe and reliable, supporting effect is good, and speed of application is fast, has improved support work efficient greatly, guarantees the safe operation of mining work.
Description of drawings
Fig. 1 adopts the anchor structure sketch map of the body of rod of left hand thread for the present invention.
The simple and easy connector construction sketch map that Fig. 2 adopts for the present invention.
The specific embodiment
For further describing the present invention, high-intensity resin anchor bolt construction new technology of the present invention is described further below in conjunction with accompanying drawing and embodiment.
Adopted the anchor structure sketch map of the body of rod of left hand thread to find out by the present invention shown in Figure 1, at an end of the body of rod 1 butterfly pallet 2, hex nut 3, hex nut 4 are housed respectively, the three is adjacent.
Simple and easy connector construction sketch map by the present invention shown in Figure 2 adopts is found out; Described simple and easy connector is to be fixedly connected with drill steel 5 by sleeve 6 to constitute; The cavity shape of sleeve 6 and hex nut 3 profiles are complementary, and the profile of drill steel 5 and the installing hole of hammer drill are complementary.Center at drill steel 5 is provided with water injection hole.
High-intensity resin anchor bolt construction new technology of the present invention according to wall rock condition, is chosen rational supporting parameter in practical operation.Its concrete technology, equipment are following:
1) selection of resin anchor and annex thereof.Select yield strength to be not less than the indented bars of 355MPa by standard anchor rod body 1, adopt butterfly pallet 2, hex nut 3, hex nut 4.
2) processing of anchor pole afterbody.Because of 7655 hammer drill are anticlockwise, for prevent anchor pole afterbody nut in the work progress on move, take to tighten two adjacent nuts---hex nut 3, hex nut 4 at anchor rod body 1 afterbody.
3) making of simple and easy connector, the outer shape of the cavity shape of sleeve 6, drill steel 5 is as the criterion to satisfy effective connection anchor pole and hammer drill.
4) after above-mentioned three preparations finish,, after boring finishes, fall water and scum silica frost etc. in the hole clearly with 7655 air rock drills boring; In the hole, fill in resin explosive roll, anchor rod body 1, the hex nut 4 with the connector connection hammer drill and the body of rod is rotated stirring; After treating that powder stick solidifies, unload two nuts of anchor rod body 1 afterbody, pack into the body of rod 1 to butterfly pallet 2 then; The nut of screwing on the pneumatic impact wrench nut of screwing, promptly applies certain pretightning force.The resin anchor construction finishes.
Claims (2)
1. high-intensity resin anchor bolt construction new technology is characterized in that adopting following technology, equipment:
1) select the body of rod (1) of left hand thread for use, the yield strength of the body of rod (1) is not less than 355MPa, at an end of the body of rod (1) two adjacent nuts---hex nut (3), the hex nut (4) that is complementary with body of rod diameter, thread rotary orientation is installed;
2) with the boring of 7655 air rock drills, after boring finishes, fall water and scum silica frost in the hole clearly, in the hole, fill in resin explosive roll, anchor rod body (1);
3) adopt simple and easy connector to connect the hex nut (4) of hammer drill and anchor pole; Be rotated stirring, treat that powder stick solidifies after, unload two nuts of anchor rod body afterbody---hex nut (3), hex nut (4); Pack into the body of rod (1) to pallet (2) then; The nut of screwing on the pneumatic impact wrench nut of screwing, promptly applies certain pretightning force; Described simple and easy connector is to be fixedly connected formation by sleeve (6) with drill steel (5), and the profile of the cavity shape of sleeve (6) and hex nut (3), hex nut (4) is complementary, and the profile of drill steel (5) and the installing hole of hammer drill are complementary.
2. high-intensity resin anchor bolt construction new technology as claimed in claim 1 is characterized in that: described anchor rod body (1) adopts indented bars; Described pallet (2) adopts the butterfly pallet; The center of described drill steel (5) is provided with water injection hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101176191A CN102635378A (en) | 2012-04-20 | 2012-04-20 | New process for high-strength resin anchor construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101176191A CN102635378A (en) | 2012-04-20 | 2012-04-20 | New process for high-strength resin anchor construction |
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| Publication Number | Publication Date |
|---|---|
| CN102635378A true CN102635378A (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101176191A Pending CN102635378A (en) | 2012-04-20 | 2012-04-20 | New process for high-strength resin anchor construction |
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| Country | Link |
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| CN (1) | CN102635378A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963709A (en) * | 2015-06-30 | 2015-10-07 | 淮南矿业(集团)有限责任公司 | Installation device for resin explosive rolls |
| CN110685721A (en) * | 2019-11-20 | 2020-01-14 | 张军贤 | Jet-anchored net hanging construction method for roadway surrounding rock support |
| CN112879057A (en) * | 2021-01-21 | 2021-06-01 | 北京科技大学 | Omnidirectional annular pressure negative expansion anchor rod device and enhanced anchoring method |
| CN113958349A (en) * | 2021-10-26 | 2022-01-21 | 天地科技股份有限公司 | Anchor rod pre-tightening auxiliary device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201007215Y (en) * | 2006-09-25 | 2008-01-16 | 董太生 | Dish shaped drop panel right hand threads anchor rod |
| CN201100130Y (en) * | 2007-08-30 | 2008-08-13 | 兖州煤业股份有限公司 | Continuous screw thread resin anchor pole |
| CN201635750U (en) * | 2010-03-24 | 2010-11-17 | 东北大学 | Novel resin anchor-rod installer |
-
2012
- 2012-04-20 CN CN2012101176191A patent/CN102635378A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201007215Y (en) * | 2006-09-25 | 2008-01-16 | 董太生 | Dish shaped drop panel right hand threads anchor rod |
| CN201100130Y (en) * | 2007-08-30 | 2008-08-13 | 兖州煤业股份有限公司 | Continuous screw thread resin anchor pole |
| CN201635750U (en) * | 2010-03-24 | 2010-11-17 | 东北大学 | Novel resin anchor-rod installer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963709A (en) * | 2015-06-30 | 2015-10-07 | 淮南矿业(集团)有限责任公司 | Installation device for resin explosive rolls |
| CN110685721A (en) * | 2019-11-20 | 2020-01-14 | 张军贤 | Jet-anchored net hanging construction method for roadway surrounding rock support |
| CN112879057A (en) * | 2021-01-21 | 2021-06-01 | 北京科技大学 | Omnidirectional annular pressure negative expansion anchor rod device and enhanced anchoring method |
| CN113958349A (en) * | 2021-10-26 | 2022-01-21 | 天地科技股份有限公司 | Anchor rod pre-tightening auxiliary device |
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Application publication date: 20120815 |