CN111577359A - Energy storage anchor rod and anchoring and grouting method - Google Patents
Energy storage anchor rod and anchoring and grouting method Download PDFInfo
- Publication number
- CN111577359A CN111577359A CN202010266621.XA CN202010266621A CN111577359A CN 111577359 A CN111577359 A CN 111577359A CN 202010266621 A CN202010266621 A CN 202010266621A CN 111577359 A CN111577359 A CN 111577359A
- Authority
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- China
- Prior art keywords
- anchor rod
- cavity
- drill bit
- air bag
- pressure air
- 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.)
- Granted
Links
- 238000004873 anchoring Methods 0.000 title claims abstract description 36
- 238000004146 energy storage Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005553 drilling Methods 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 30
- 239000011347 resin Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- 239000004570 mortar (masonry) Substances 0.000 claims description 8
- 239000003245 coal Substances 0.000 claims description 6
- 239000011435 rock Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 3
- 239000013521 mastic Substances 0.000 claims 1
- 238000003825 pressing Methods 0.000 abstract 1
- 239000003829 resin cement Substances 0.000 description 6
- 230000001960 triggered effect Effects 0.000 description 5
- 239000002893 slag Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0093—Accessories
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses an energy storage anchor rod and an anchoring and grouting method, wherein the energy storage anchor rod comprises a drill bit and a hollow anchor rod; one end of the hollow anchor rod is connected with the drill bit, and the other end of the hollow anchor rod is provided with a tray through a locking nut; one end of the hollow anchor rod, which is close to the drill bit, is provided with a mixing cavity, and the other end of the hollow anchor rod is provided with an accommodating cavity for accommodating a high-pressure air bag; the inner cavity of the anchor rod between the accommodating cavity and the mixing cavity is divided into a first cavity and a second cavity through a partition plate; the high-pressure air bag is connected with the trigger and used for controlling the high-pressure air bag. The drill bit and the anchor rod are combined into a whole, and the functions of drilling and anchoring are achieved, so that labor force is reduced; the inner section of the anchor rod is divided into an upper cavity and a lower cavity with equal or unequal volumes, and the upper cavity and the lower cavity are used for injecting anchoring agents, so that the mixing proportion of the anchoring agents can be better controlled; triggering high-pressure gas in the high-pressure air bag through a trigger, pressing the anchoring agent pre-installed in the hollow anchor rod into the mixing cavity for mixing, and then extruding the anchoring agent into the drill hole for anchoring; the method can save working procedures, avoid accidents and realize automatic operation.
Description
Technical Field
The invention relates to the technical field of anchor rods, in particular to an energy storage anchor rod and an anchoring and grouting method.
Background
At present, the tunnel engineering and mine roadway engineering quantity in China is large, millions of workers are engaged in rock mass and coal body supporting, the working environment is very severe, the labor intensity is high, and the accident rate is high. In the traditional anchoring operation, after drilling is often finished, an anchoring agent is filled into the drilled hole, then an anchor rod is installed on a drilling machine, the anchor rod is operated by the anchor rod machine to send the anchoring agent to the top of the hole, the hole is rotated and stirred to be solidified, and anchor rod screws are screwed to complete the anchoring process. However, the following disadvantages exist in this operation:
1. the anchoring agent is pushed in and stirred by the anchor rod, so that the working procedures are multiple, the use is complex and the efficiency is low;
2. the mixing proportion of the anchoring agent is not easy to control;
3. the anchoring process needs to be completed by a plurality of persons, the labor force is increased, the automatic operation is not easy to realize, and the slag discharge is difficult.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an energy storage anchor rod and an anchoring and grouting method, and solves the problems that the anchoring process proposed in the background art is complex, the automatic operation is not easy to realize, the efficiency is low and the like.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme:
an energy storage anchor rod comprises a drill bit and a hollow anchor rod; one end of the hollow anchor rod is connected with the drill bit, and the other end of the hollow anchor rod is provided with a tray through a locking nut; one end of the hollow anchor rod, which is close to the drill bit, is provided with a mixing cavity, and the other end of the hollow anchor rod is provided with an accommodating cavity for accommodating a high-pressure air bag; the inner cavity of the anchor rod between the accommodating cavity and the mixing cavity is divided into a first cavity and a second cavity through a partition plate; the high-pressure air bag is connected with the trigger and used for controlling the high-pressure air bag.
In a preferred embodiment of the present invention, the drill bit of the energy storage anchor rod has a through hole.
As a preferable technical scheme of the invention, the first cavity of the energy storage anchor rod is used for infiltrating resin cement, and the second cavity is used for infiltrating curing agent.
As a preferable technical solution of the present invention, a ratio of cross-sectional areas of the first cavity and the second cavity of the energy storage anchor rod is 50: 2 to 50.
As a preferable technical solution of the present invention, a ratio of cross-sectional areas of the first cavity and the second cavity of the energy storage anchor rod is 50: 5 to 10.
According to a preferable technical scheme of the invention, a plurality of micro tubes are embedded on the inner wall or the outer wall of the hollow anchor rod, and the micro tubes are linearly distributed or spirally distributed on the inner wall or the outer wall of the hollow anchor rod.
As a preferable technical scheme of the invention, the microtubes are water microtubes or wind microtubes with the diameter of 2 mm.
As a preferred technical scheme of the invention, the anchoring and grouting method of the energy storage anchor rod comprises the following steps:
s1: injecting resin daub into a first cavity in the anchor rod in advance, and injecting a curing agent into a second cavity;
s2: placing the high-pressure air bag into an accommodating cavity far away from one end of the drill bit, connecting the high-pressure air bag with a trigger, and then sealing the end part of the accommodating cavity provided with the high-pressure air bag;
s3: drilling a rock wall and a coal mine roadway where the anchor rod needs to be installed by using the energy storage anchor rods installed in the S1 and S2;
s4: after drilling, the drill bit is not taken down, the high-pressure gas in the high-pressure gas bag is triggered through the trigger, the resin cement and the curing agent which are pre-installed in the hollow anchor rod are pressed into the mixing cavity to be mixed, and the mixed resin cement and the curing agent are extruded into the drill hole through the through hole of the drill bit to be anchored.
(III) advantageous effects
Compared with the prior art, the invention provides the energy storage anchor rod and the anchor grouting method, the drill bit and the anchor rod are combined into a whole, and the energy storage anchor rod has the functions of drilling and anchoring, so that the working time is saved and the labor force is reduced compared with the traditional process of drilling and anchoring in a split manner; the inner section of the anchor rod is divided into an upper cavity and a lower cavity which have equal or unequal volumes and are used for injecting the anchoring agent, and the mixing cavities at the drill bit are fully mixed, so that the mixing proportion of the anchoring agent can be better controlled; the high-pressure air bag in the anchor rod is connected with the trigger at the end part of the anchor rod, the high-pressure gas in the high-pressure air bag is triggered by the trigger, the anchoring agent pre-installed in the hollow anchor rod is pressed into the mixed cavity for mixing, and the mixed anchoring agent can directly generate gas after being triggered, so that the mixed anchoring agent is expanded and extruded out of the cavity to achieve the purpose of anchoring rock mass or coal mass; the inner or outer wall of the anchor rod is additionally provided with a plurality of small water or air micro-pipes for deslagging during drilling, so that the aim of deslagging is fulfilled. The anchoring method of the invention not only saves working procedures and labor force, but also avoids accidents, thereby realizing automatic operation.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a sectional view taken along the plane a-a in fig. 1.
In the figure: 1. a drill bit; 2. a hollow anchor rod; 3. a first cavity; 4. a second cavity; 5. a tray; 6. locking the nut; 7. a high pressure air bag; 8. a trigger; 9. a partition plate; 11. a through hole; 12. a microtube; 21. a mixing chamber.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1-2, the present invention provides the following technical solutions: an energy storage anchor rod comprises a drill bit 1 and a hollow anchor rod 2; one end of the hollow anchor rod 2 is connected with the drill bit 1, and the other end of the hollow anchor rod is provided with a tray 5 through a locking nut 6; one end of the hollow anchor rod 2 close to the drill bit 1 is provided with a mixing cavity 21, and the other end is provided with an accommodating cavity for accommodating the high-pressure air bag 7; the inner cavity of the anchor rod between the accommodating cavity and the mixing cavity 21 is divided into a first cavity 3 and a second cavity 4 through a partition plate 9; the high-pressure air bag 7 is connected with a trigger 8 and used for controlling the high-pressure air bag 7.
In this embodiment, the drill bit combines as an organic wholely with the stock, has the function of boring with the anchor simultaneously, has saved once demolising of drilling rod on the stock machine promptly in an anchor circulation process and has installed with the stock toward the stock machine once, need not demolish the drilling rod after the drilling and realize boring the integrative function of anchor, has practiced thrift the process, has reduced the labour. The anchor rod is divided into two cavities with equal or unequal volumes from the mixing cavity to the accommodating cavity by the partition plate, the resin cement and the curing agent are injected, the mixing cavity at the drill bit is fully mixed, and the mixing proportion of the resin cement and the curing agent can be better controlled in the process. The high-pressure air bag arranged in the anchor rod is electrically connected with the trigger at the end part of the anchor rod, high-pressure gas in the high-pressure air bag is triggered by the trigger, resin cement and curing agent pre-installed in the hollow anchor rod are pressed into the mixed cavity at the drill bit to be fully mixed, and the mixed anchoring agent can directly generate gas after being triggered, so that the gas expands to be extruded out of the cavity through the through hole of the drill bit, and the aim of anchoring a rock body or a coal body is achieved.
Specifically, the drill 1 has a through hole 11; a through hole is formed in the drill bit 1, and the anchoring agent can be extruded into the drilled hole through the through hole 11 of the drill bit 1 for anchoring.
Specifically, the first cavity 3 is used for infiltrating resin mortar, and the second cavity 4 is used for infiltrating curing agent; the cavity is divided into two cavities with equal or unequal volumes by the partition board in the anchor rod, and the resin daub and the curing agent are respectively injected into the two cavities, so that the mixing proportion can be better controlled.
Specifically, the ratio of the cross-sectional areas of the first cavity 3 and the second cavity 4 is 50: 2-50; the cavity with the large cross section is used for infiltrating resin mortar, the cavity with the small cross section is used for infiltrating curing agent, the cross section area ratio of different sizes is set, and raw materials can be better blended.
Specifically, the ratio of the cross-sectional areas of the first cavity 3 and the second cavity 4 is 50: 5-10; the preferred cross-sectional area ratio is 50: and (5) infiltrating and filling resin daub and a curing agent into the anchor rod of 5-10, and better controlling and adjusting the proportion.
Specifically, a plurality of micro-tubes 12 are embedded on the inner wall or the outer wall of the hollow anchor rod 2, and the micro-tubes 12 are linearly or spirally distributed on the inner wall or the outer wall of the hollow anchor rod 2; a plurality of water or air micro-pipes are additionally arranged on the inner wall or the outer wall of the anchor rod and are used for discharging slag during drilling, so that the aim of discharging slag is fulfilled.
Specifically, the microtube 12 is a water microtube or a wind microtube with the diameter of 2 mm; the fine water or wind microtubes are more beneficial to slag removal.
Specifically, the anchoring and grouting method of the energy storage anchor rod comprises the following steps:
s1: resin mortar is injected into the first cavity 3 in the anchor rod in advance, and curing agent is injected into the second cavity 4;
s2: placing the high-pressure air bag 7 into an accommodating cavity far away from one end of the drill bit 1, connecting the high-pressure air bag 7 with the trigger 8, and then sealing the end part of the accommodating cavity provided with the high-pressure air bag 7;
s3: drilling a rock wall and a coal mine roadway where the anchor rod needs to be installed by using the energy storage anchor rods installed in the S1 and S2;
s4: after drilling, the drill bit 1 is not taken down, the trigger 8 triggers high-pressure gas in the high-pressure air bag 7, resin mortar and curing agent which are pre-installed in the hollow anchor rod 2 are pressed into the mixing cavity 21 to be mixed, and the mixed resin mortar and curing agent are extruded into the drill hole through the through hole 11 of the drill bit 1 to be anchored.
In the embodiment, the resin daub and the curing agent are pressed into the mixing cavity by triggering the high-pressure gas in the high-pressure air bag and then enter the drilled hole for anchoring, so that the method not only saves working procedures and labor force, but also avoids accidents, and further realizes automatic operation.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An energy storage anchor rod is characterized by comprising a drill bit (1) and a hollow anchor rod (2);
one end of the hollow anchor rod (2) is connected with the drill bit (1), and the other end of the hollow anchor rod is provided with a tray (5) through a locking nut (6); one end of the hollow anchor rod (2) close to the drill bit (1) is provided with a mixing cavity (21), and the other end is provided with an accommodating cavity for accommodating the high-pressure air bag (7); the inner cavity of the anchor rod between the accommodating cavity and the mixing cavity (21) is divided into a first cavity (3) and a second cavity (4) through a partition plate (9); the high-pressure air bag (7) is connected with the trigger (8) and used for controlling the high-pressure air bag (7).
2. An energy storing bolt according to claim 1, characterised in that the drill bit (1) has a through bore (11).
3. An energy storage bolt according to claim 1, characterised in that the first cavity (3) is impregnated with resin mastic and the second cavity (4) is impregnated with curing agent.
4. An energy storing anchor according to any one of claims 1 to 3, wherein the ratio of the cross-sectional areas of the first (3) and second (4) cavities is 50: 2 to 50.
5. An energy storage bolt according to claim 4, characterised in that the ratio of the cross-sectional areas of the first (3) and second (4) cavities is 50: 5 to 10.
6. An energy storage bolt according to claim 1, wherein a plurality of microtubes (12) are embedded in the inner or outer wall of the hollow bolt (2), and the microtubes (12) are linearly or spirally distributed on the inner or outer wall of the hollow bolt (2).
7. An energy storage bolt according to claim 6, characterised in that the microtubes (12) are water or wind microtubes of 2mm diameter.
8. An anchoring method of an energy storage anchor rod based on claim 1, characterized by comprising the following steps:
s1: resin mortar is injected into a first cavity (3) in the anchor rod in advance, and curing agent is injected into a second cavity (4);
s2: placing the high-pressure air bag (7) into an accommodating cavity far away from one end of the drill bit (1), connecting the high-pressure air bag (7) with a trigger (8), and then sealing the end part of the accommodating cavity provided with the high-pressure air bag (7);
s3: drilling a rock wall and a coal mine roadway where the anchor rod needs to be installed by using the energy storage anchor rods installed in the S1 and S2;
s4: after drilling, the drill bit (1) is not taken down, the trigger (8) triggers high-pressure gas in the high-pressure air bag (7), resin mortar and curing agent which are pre-installed in the hollow anchor rod (2) are pressed into the mixing cavity (21) to be mixed, and the mixed resin mortar and curing agent are extruded into the drill hole through the through hole (11) of the drill bit (1) to be anchored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010266621.XA CN111577359B (en) | 2020-04-07 | 2020-04-07 | Energy storage anchor rod and anchoring and grouting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010266621.XA CN111577359B (en) | 2020-04-07 | 2020-04-07 | Energy storage anchor rod and anchoring and grouting method |
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| Publication Number | Publication Date |
|---|---|
| CN111577359A true CN111577359A (en) | 2020-08-25 |
| CN111577359B CN111577359B (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202010266621.XA Active CN111577359B (en) | 2020-04-07 | 2020-04-07 | Energy storage anchor rod and anchoring and grouting method |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4126005A (en) * | 1977-09-06 | 1978-11-21 | E. I. Du Pont De Nemours And Company | Inorganic cement grouting system for use in anchoring a bolt in a hole and compartmented package for use therewith |
| DE3200051A1 (en) * | 1982-01-04 | 1983-07-14 | Gerd 4600 Dortmund Drespa | Rock-stabilising cartridge |
| DE3208471A1 (en) * | 1982-01-04 | 1983-09-15 | Gerd 4600 Dortmund Drespa | Rock-stabilising cartridge II |
| US5582251A (en) * | 1995-04-17 | 1996-12-10 | Baker Hughes Incorporated | Downhole mixer |
| AU5934099A (en) * | 1998-11-11 | 2000-05-18 | Broken Hill Proprietary Company Limited, The | Resin injection system |
| WO2007059580A1 (en) * | 2005-11-24 | 2007-05-31 | Peter Andrew Gray | Self drilling rock bolt |
| WO2013078514A1 (en) * | 2011-11-30 | 2013-06-06 | Imdex Limited | Grout delivery |
| CN203783613U (en) * | 2014-03-12 | 2014-08-20 | 安徽坤大化学锚固有限公司 | Agitation-free resin anchoring agent packaging structure |
| CN106082784A (en) * | 2016-06-08 | 2016-11-09 | 晋城宏圣科威矿用材料有限公司 | A kind of resin anchoring agent |
| CN106337693A (en) * | 2016-09-22 | 2017-01-18 | 太原理工大学 | Novel hard shell anchoring agent |
| CN109779665A (en) * | 2019-03-29 | 2019-05-21 | 攀枝花学院 | Bore anchoring integrated anchor rod |
| CN109826656A (en) * | 2019-03-29 | 2019-05-31 | 攀枝花学院 | The anchor of drilling anchor one |
| CN110374651A (en) * | 2019-07-18 | 2019-10-25 | 北京交通大学 | The double group material full length fastening devices of self-drilling type and anchoring construction method |
| CN212250091U (en) * | 2020-04-07 | 2020-12-29 | 山西海洁机电科技有限公司 | Energy storage anchor rod |
-
2020
- 2020-04-07 CN CN202010266621.XA patent/CN111577359B/en active Active
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|---|---|---|---|---|
| US4126005A (en) * | 1977-09-06 | 1978-11-21 | E. I. Du Pont De Nemours And Company | Inorganic cement grouting system for use in anchoring a bolt in a hole and compartmented package for use therewith |
| DE3200051A1 (en) * | 1982-01-04 | 1983-07-14 | Gerd 4600 Dortmund Drespa | Rock-stabilising cartridge |
| DE3208471A1 (en) * | 1982-01-04 | 1983-09-15 | Gerd 4600 Dortmund Drespa | Rock-stabilising cartridge II |
| US5582251A (en) * | 1995-04-17 | 1996-12-10 | Baker Hughes Incorporated | Downhole mixer |
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| WO2007059580A1 (en) * | 2005-11-24 | 2007-05-31 | Peter Andrew Gray | Self drilling rock bolt |
| WO2013078514A1 (en) * | 2011-11-30 | 2013-06-06 | Imdex Limited | Grout delivery |
| CN203783613U (en) * | 2014-03-12 | 2014-08-20 | 安徽坤大化学锚固有限公司 | Agitation-free resin anchoring agent packaging structure |
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| CN111577359B (en) | 2022-05-24 |
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