CN101768966B - Pressure grouting device for overall length spiral anchor rod and construction process - Google Patents
Pressure grouting device for overall length spiral anchor rod and construction process Download PDFInfo
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- CN101768966B CN101768966B CN2010101010996A CN201010101099A CN101768966B CN 101768966 B CN101768966 B CN 101768966B CN 2010101010996 A CN2010101010996 A CN 2010101010996A CN 201010101099 A CN201010101099 A CN 201010101099A CN 101768966 B CN101768966 B CN 101768966B
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Abstract
The invention provides a pressure grouting device for an overall length spiral anchor rod and a construction process. The front end of the overall length spiral anchor rod is screwed with an anchor head; a pressure stop-grouting plug is formed by nesting a nylon inner plug with a rubber outer plug; the nylon inner plug is provided with a pressure grouting hole; an outlet of a pressure grout injector is connected with the bottom of the pressure stop-grouting plug; an outlet of a grout injector is connected with a grouting pipe and then connected with an inlet of the pressure grout injector; the outlet of the pressure grout injector is connected with a groove of the grout injector after passing through a return pipe; a decompression pipe is fixed on the anchor rod by a positioning central ring; micro-pores are distributed all over the decompression pipe; and an inner end of the decompression pipe stretches into the anchor head, and an outer end of the decompression pipe extends out of an anchor hole after passing through the pressure stop-grouting plug and the pressure grout injector. The device of the invention can conveniently and reliably realize the pressure grouting for an overall spiral mortar anchor rod and has the characteristics of no slurry loss, no slurry leakage and full grouting.
Description
Technical field
The present invention relates to bolt grouting device and job practices thereof, particularly adopt length spiral anchor rod that the device and the grouting construction process thereof of pressure injection slurry are arranged.
Background technology
Full spiral grouting rock bolt (the applicant's patent 200820062187.8) has following characteristics: 1, anchor rod body is provided with the total length continuous helical, is convenient to any cutting, to satisfy the job site needs; 2, the convenient accessories such as spiral and all kinds of anchor heads of installing help applying prestressing force in case of necessity; 3, connection (standard or the non-standard) spiral that adopts the tooth height not wait on the body of rod, after the slip casting, nut and anchor rod body spin the high lower of tooth at position will be fixed for slurry placement, thereby make nut can not take place to become flexible on anchor rod body because of being subjected to external force again.Therefore, the fastness and the globality of having strengthened member of structure have been improved; 4, the convenient connection, adopt the inside spin at adapter sleeve two ends easily two anchor rod body spirals to be connected, with the lengthening anchor rod body, compare with existing welding lengthening technology, have higher reliability.Owing to have above-mentioned many advantages, full spiral grouting rock bolt has more applications in the geotechnical engineering anchoring construction, and there is following problem in its existing grouting mode: on the one hand, slurry filling machine is only starched pipe and is connected the insertion anchor hole through stop grouting plug, exists easy obstruction of outlet pipe outlet and outlet pipe that unsteady problem is installed; On the other hand, be difficult to discharge air in the anchor hole in the slip casting process, bring slip casting not full, the consequence of grouting quality difference.
Summary of the invention
The purpose of this invention is to provide a kind of pressure grouting device for overall length spiral anchor rod that slurry filling machine connects, grouting quality is good that makes things convenient for.
The object of the present invention is achieved like this: a kind of pressure grouting device for overall length spiral anchor rod, comprise slurry filling machine, and the length spiral anchor rod body, the length spiral anchor rod front end is connected with anchor head; Also has the pressure stop grouting plug that is positioned at length spiral anchor rod body rear portion, is used as the shutoff anchor hole: fill in by nylon plug that is shaped as cone and rubber and form outward, plug is screwed on the length spiral anchor rod body in the nylon, be evenly equipped with the slip casing by pressure hole in the nylon beyond the Great Wall, the outer plug of rubber is nested in the nylon beyond the Great Wall; Slip casing by pressure device structure is: slip casting tube coupling and overfall tube coupling are welded on the straight tube symmetrically and are interconnected, slip casting tube coupling and straight tube are the obtuse angle at the angle of slip casting direction, big envelope is screwed in the straight tube front end, and pressure stop grouting plug rear end is crimped on the straight tube front end through big envelope, and straight tube is connected with gland on the rear end; Be connected to the slip casting tube coupling of slip casing by pressure device after the slurry filling machine outlet connection Grouting Pipe, the overfall tube coupling of slip casing by pressure device is connected to the hopper of slurry filling machine through return pipe; A plurality of location ring placed in the middle is screwed on the total length threaded anchor body of rod, relief tube fixes on the bayonet socket that forms between two radiation items on the ring placed in the middle of location, spread all over micropore on the relief tube total length, relief tube the inner is stretched in the anchor head, and the relief tube outer end is passed the slip casing by pressure hole of plug in the nylon and the straight tube inner chamber of slip casing by pressure device and the hole on the gland and stretched out beyond the anchor hole.
The inlet tube or the outlet of above-mentioned slurry filling machine are provided with pressure regulator valve; The straight tube of slip casing by pressure device is provided with pressure meter.
Be provided with backing plate and nut behind the above-mentioned length spiral anchor rod upward pressure stop grouting plug.
Another object of the present invention provides a kind of construction technology of pressure grouting device for overall length spiral anchor rod.
Another object of the present invention is achieved in that a kind of construction technology that adopts pressure grouting device for overall length spiral anchor rod, carries out according to the following steps:
A), on the length spiral anchor rod body, anchor head is installed, adopt location ring placed in the middle that relief tube is fixed on this anchor bar body, anchor bar body is placed anchor hole, the relief tube front end is stretched in the anchor head, the relief tube outer end is stretched out beyond the anchor hole;
B), plug in the nylon of pressure stop grouting plug is screwed on the anchor pole, the outer plug of rubber is nested in the nylon beyond the Great Wall, adopt big envelope the pressure stop grouting plug to be crimped on the straight tube front end of slip casing by pressure device, make the shutoff of pressure stop grouting plug on the anchor hole opening, and make the relief tube outer end pass the slip casing by pressure hole of plug in the nylon and the straight tube inner chamber of slip casing by pressure device, again beyond anchor hole is stretched out in the hole on the gland;
C), slurry filling machine outlet is connected with the slip casting tube coupling of slip casing by pressure device by Grouting Pipe, with the pulp tube coupling of slip casing by pressure device above return pipe is connected to the slurry filling machine hopper or in the insertion slurries;
D), open slurry filling machine, slip casting monitor display screen is observed in slip casting, in grouting amount reaches scope of design stable after, slip casting is full can to assert anchor hole, finishes slip casting in the anchor hole;
E), regulate pressure valve and make grouting pressure to scope of design, observe the ascendant trend of the grouting amount of slip casting monitor, keep a period of time, to finish diffusion slip casting;
F), close slurry filling machine, installation backing plate, nut;
G), clean control system of grouting, so that carry out the slip casting of next root anchor pole.
Compared with prior art, the invention has the beneficial effects as follows:
1, the pressure injection that has that realizes full spiral grouting rock bolt is easily and reliably starched.
2, whole slip casting process is a complete circulating system, does not have the situation of losing slurry and spillage, economical with materials.
3, exhaust in the slip casting process and overfall are separated, finish respectively, avoided disadvantage easily stifled when traditional stack is double makees return pipe by relief tube in the system and return pipe.
4, relief tube is the honeybee eye tube passage by total length distribution micropore, and the relief tube front end stretches in the anchor head, plays the pressure release scavenging action, does not play overfall, does not also have blocking problem.
5, the stop grouting plug of full spiral grouting rock bolt has adopted the blank design of wedge, be plugged with the spiral that matches with anchor pole in the nylon, stop grouting plug and not too regular anchor hole also can be fitted closely, the outer plug of rubber is nested in the nylon beyond the Great Wall, form powerful clamping force, make anchor pole can be fixed in the anchor hole and can bear certain grouting pressure, share and increased that anchor head play fixingly reach the end anchorage effect.
6, the simple slip casting monitor that is suitable for can make the operator know the grouting amount and the grouting pressure of anchor pole easily, and can adjust grouting pressure (regulate pressure regulator valve and obtain the grouting pressure that needs) and control slip casting time easily, guarantees bolt grouting effect, assurance workmanship.
7, simple to operate.The slip casing by pressure of full spiral grouting rock bolt is almost consistent with the grouting process of common hollow bolt, does not need Special Training to operate.
Description of drawings
Fig. 1 is the annexation schematic diagram of grouting device of the present invention when mortar depositing construction;
Fig. 2 is the structure chart that the full spiral anchor rod of the present invention and pressure stop grouting plug and slip casing by pressure device are installed together;
Fig. 3 is the structure chart of slip casing by pressure device shown in Figure 1 (being the slip casting rifle);
Fig. 4 is the front view of plug in the nylon shown in Figure 2;
Fig. 5 is the sectional drawing of Fig. 2 along the A-A line;
Fig. 6 is the sectional drawing of the outer plug of rubber shown in Figure 2;
Fig. 7 is the profile of location shown in Figure 1 ring placed in the middle.
The specific embodiment
Fig. 1 Fig. 2 illustrates, and the present invention includes slurry filling machine 12, length spiral anchor rod body 1, and length spiral anchor rod 1 front end is connected with anchor head 10; Referring to Fig. 5, also has the pressure stop grouting plug 2 that is positioned at length spiral anchor rod body 1 rear portion, is used as shutoff anchor hole 3: form by nylon plug 21 that is shaped as cone and the outer plug 22 of rubber, plug is screwed on the length spiral anchor rod body 1 in the nylon, be evenly equipped with slip casing by pressure hole 21a in the nylon beyond the Great Wall, the outer plug of rubber is nested in the nylon beyond the Great Wall; Slip casing by pressure device 5 structures are: slip casting tube coupling 5a and overfall tube coupling 5b are welded on the straight tube symmetrically and are interconnected, slip casting tube coupling and straight tube are the obtuse angle at the angle of slip casting direction, big envelope 5c is screwed in the straight tube front end, and pressure stop grouting plug rear end is crimped on the straight tube front end through big envelope, be connected with gland 5d on the straight tube rear end, be provided with packing ring 5e between gland and the straight tube; Be connected to the slip casting tube coupling 5a of slip casing by pressure device 5 after the slurry filling machine 12 outlet connection Grouting Pipe 6, the overfall tube coupling 5b of slip casing by pressure device 5 is connected to the hopper of slurry filling machine 12 through return pipe 7; A plurality of location ring 9 placed in the middle is screwed on the total length threaded anchor body of rod 1, relief tube 8 fixes on the bayonet socket that forms between two radiation items on the ring placed in the middle of location, spread all over micropore on relief tube 8 total lengths, relief tube the inner is stretched in the anchor head, and the relief tube outer end is passed the slip casing by pressure hole 21a of plug in the nylon and the straight tube inner chamber of slip casing by pressure device and the hole on the gland 5d and stretched out beyond the anchor hole 3.
Micro-pore diameter on the relief tube is 0.1～0.2mm.Be provided with backing plate and nut (not shown) behind the length spiral anchor rod 1 upward pressure stop grouting plug 2.
The inlet tube of slurry filling machine 12 or outlet are provided with pressure regulator valve 4; The straight tube of slip casing by pressure device 5 is provided with pressure meter (pressure meter can spin on the circular hole among Fig. 3).
Be evenly equipped with radiation item on the circumference of location ring placed in the middle, form bayonet socket between adjacent two radiation items, relief tube can ten thousand just fixes on bayonet socket to be fixed.The outer plug of plug and rubber is tight fit in the nylon.The pressure slurry through in the nylon beyond the Great Wall injected hole and strut rubber and fill in outward (during no external force, rubber is filled in front end outward and is ridden on the anchor bar body) be pressed in the anchor hole, in the anchor hole ground paste filling full after, after voltage stabilizing, have the unnecessary slip of pressure could be in the nylon beyond the Great Wall slurry-feeding hole return, at this moment, because the slip casting tube coupling is possessed pressure, can only be through overfall tube coupling 5b overfall, therefore, guaranteed that slip casting is full, improved grouting quality.
A kind of construction technology of pressure grouting device for overall length spiral anchor rod, carry out according to the following steps:
A), on length spiral anchor rod body 1, anchor head is installed, adopt location ring placed in the middle 9 that relief tube 8 is fixed on this anchor bar body, anchor bar body is placed anchor hole, the relief tube front end is stretched in the anchor head, the relief tube outer end is stretched out beyond the anchor hole;
B), plug in the nylon of pressure stop grouting plug is screwed on the anchor pole, the outer plug of rubber is nested in the nylon beyond the Great Wall, adopt big envelope 5c the pressure stop grouting plug to be crimped on the straight tube front end of slip casing by pressure device 5, make the shutoff of pressure stop grouting plug on anchor hole 3 openings, and make the relief tube outer end pass the slip casing by pressure hole of plug in the nylon and the straight tube inner chamber of slip casing by pressure device, again beyond anchor hole is stretched out in the hole on the gland 5d;
C), slurry filling machine outlet is connected with the slip casting tube coupling 5a of slip casing by pressure device by Grouting Pipe 6, with the pulp tube coupling 5b of slip casing by pressure device above return pipe 7 is connected to the slurry filling machine hopper or in the insertion slurries;
D), open slurry filling machine, slip casting monitor 11 display screens are observed in slip casting, in grouting amount reaches scope of design stable after, slip casting is full can to assert anchor hole, finishes slip casting in the anchor hole;
E), regulate pressure valve and make grouting pressure to scope of design, observe the ascendant trend of the grouting amount of slip casting monitor 11, keep a period of time, to finish diffusion slip casting;
F), close slurry filling machine, installation backing plate, nut;
G), clean control system of grouting, so that carry out the slip casting of next root anchor pole.
Claims (4)
1. a pressure grouting device for overall length spiral anchor rod comprises, slurry filling machine (12), and length spiral anchor rod body (1) is characterized in that: described length spiral anchor rod (1) front end is connected with anchor head (10); Also has the pressure stop grouting plug (2) that is positioned at length spiral anchor rod body (1) rear portion, is used as shutoff anchor hole (3): fill in (22) outward by nylon plug (21) that is shaped as cone and rubber and form, plug is screwed on the length spiral anchor rod body (1) in the nylon, be evenly equipped with slip casing by pressure hole (21a) in the nylon beyond the Great Wall, the outer plug of rubber is nested in the nylon beyond the Great Wall; Slip casing by pressure device (5) structure is: slip casting tube coupling (5a) and overfall tube coupling are welded on the straight tube symmetrically and are interconnected, slip casting tube coupling and straight tube are the obtuse angle at the angle of slip casting direction, big envelope (5c) is screwed in the straight tube front end, and pressure stop grouting plug rear end is crimped on the straight tube front end through big envelope, is connected with gland (5d) on the straight tube rear end; Be connected to the slip casting tube coupling (5a) of slip casing by pressure device (5) after described slurry filling machine (12) the outlet connection Grouting Pipe (6), the overfall tube coupling (5b) of slip casing by pressure device (5) is connected to the hopper of slurry filling machine (12) through return pipe (7); A plurality of location are encircled (9) between two parties and are screwed on the total length threaded anchor body of rod (1), relief tube (8) fixes on the bayonet socket that forms between two radiation items on the ring placed in the middle of location, spread all over micropore on relief tube (8) total length, relief tube the inner is stretched in the anchor head, and the relief tube outer end is passed the slip casing by pressure hole (21a) of plug in the nylon and the straight tube inner chamber of slip casing by pressure device and the hole on the gland (5d) and stretched out anchor hole (3) in addition.
2. according to the described pressure grouting device for overall length spiral anchor rod of claim 1, it is characterized in that: the inlet tube of described slurry filling machine (12) or outlet are provided with pressure regulator valve (4); The straight tube of described slip casing by pressure device (5) is provided with pressure meter.
3. according to the described pressure grouting device for overall length spiral anchor rod of claim 2, it is characterized in that: be provided with backing plate and nut behind described length spiral anchor rod (1) the upward pressure stop grouting plug (2).
4. one kind is adopted the construction technology of pressure grouting device for overall length spiral anchor rod according to claim 1, it is characterized in that: carry out according to the following steps:
A), anchor head go up to be installed, adopt location ring placed in the middle (9) that relief tube (8) is fixed on this anchor bar body, anchor bar body is placed anchor hole, the relief tube front end is stretched in the anchor head, the relief tube outer end is stretched out beyond the anchor hole at length spiral anchor rod body (1);
B), plug in the nylon of pressure stop grouting plug is screwed on the anchor pole, the outer plug of rubber is nested in the nylon beyond the Great Wall, adopt big envelope (5c) the pressure stop grouting plug to be crimped on the straight tube front end of slip casing by pressure device (5), make the shutoff of pressure stop grouting plug on anchor hole (3) opening, and make the relief tube outer end pass the slip casing by pressure hole of plug in the nylon and the straight tube inner chamber of slip casing by pressure device, again beyond anchor hole is stretched out in the hole on the gland (5d);
C), slurry filling machine outlet is connected with the slip casting tube coupling (5a) of slip casing by pressure device by Grouting Pipe (6), with the pulp tube coupling (5b) of slip casing by pressure device above return pipe (7) is connected to the slurry filling machine hopper or in the insertion slurries:
D), open slurry filling machine, slip casting monitor (11) display screen is observed in slip casting, in grouting amount reaches scope of design stable after, slip casting is full can to assert anchor hole, finishes slip casting in the anchor hole;
E), regulate pressure valve and make grouting pressure to scope of design, observe the ascendant trend of the grouting amount of slip casting monitor (11), keep a period of time, to finish diffusion slip casting;
F), close slurry filling machine, installation backing plate, nut;
G), clean control system of grouting, so that carry out the slip casting of next root anchor pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101010996A CN101768966B (en) | 2010-01-26 | 2010-01-26 | Pressure grouting device for overall length spiral anchor rod and construction process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101010996A CN101768966B (en) | 2010-01-26 | 2010-01-26 | Pressure grouting device for overall length spiral anchor rod and construction process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101768966A CN101768966A (en) | 2010-07-07 |
| CN101768966B true CN101768966B (en) | 2011-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101010996A Expired - Fee Related CN101768966B (en) | 2010-01-26 | 2010-01-26 | Pressure grouting device for overall length spiral anchor rod and construction process |
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| CN (1) | CN101768966B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102644471B (en) * | 2012-04-20 | 2015-07-22 | 天地科技股份有限公司 | Hole sealing machine and hole sealing method using hole sealing machine to perform small aperture grouting for anchoring anchor rope |
| CN103696787B (en) * | 2013-12-06 | 2016-07-20 | 西北矿冶研究院 | Deformed steel bar high-pressure grouting anchor rod and support method for reinforcing roadway by deformed steel bar high-pressure grouting anchor rod |
| CN103711508A (en) * | 2014-01-20 | 2014-04-09 | 山东科技大学 | Highly-shearing-resistant anchor rod with mutually matched steel wire ropes and circular truncated cone bodies |
| CN104018864B (en) * | 2014-06-27 | 2016-03-23 | 福州市规划设计研究院 | The radial anchor structure of advance support and construction method thereof |
| CN105002910A (en) * | 2015-06-26 | 2015-10-28 | 中钢集团马鞍山矿山研究院有限公司 | Cement mortar grouting tank for prestress long anchor rope grouting and application method |
| CN104929670B (en) * | 2015-07-02 | 2017-08-11 | 徐州工程学院 | Wing formula anchor pole |
| CN105089687B (en) * | 2015-09-26 | 2017-12-08 | 湘潭大学 | Bolt grouting support process system |
| CN107747499A (en) * | 2017-11-29 | 2018-03-02 | 洛阳工岩科技有限公司 | Reacting cycle grouting device |
| CN108411912A (en) * | 2018-05-03 | 2018-08-17 | 大连理工大学 | A kind of convenient method of bolt stress slip casting |
| CN109339694B (en) * | 2018-11-27 | 2020-06-26 | 绍兴市寅创科技有限公司 | Electric drill device for preventing slurry loss and performing bubble lubrication during measurement while drilling |
| CN110374104B (en) * | 2019-07-23 | 2020-12-29 | 天长市大成建筑有限公司 | Foundation slip casting equipment for building |
| CN110630292A (en) * | 2019-10-24 | 2019-12-31 | 河南理工大学 | Hole sealing and grouting reinforcement device and method for fractured coal rock mass |
-
2010
- 2010-01-26 CN CN2010101010996A patent/CN101768966B/en not_active Expired - Fee Related
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| CN101768966A (en) | 2010-07-07 |
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Niu Jianwen Inventor after: Wu Hang Inventor after: Guo Qiang Inventor after: Xie Zhiping Inventor after: Wang Yingfang Inventor before: Niu Jianwen Inventor before: Wu Hang |
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Free format text: CORRECT: INVENTOR; FROM: NIU JIANWEN WU HANG TO: NIU JIANWEN WU HANG GUO QIANG XIE ZHIPING WANG YINGFANG |
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Granted publication date: 20110727 Termination date: 20160126 |
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