CN203080519U - One-way rotary spraying anchor rod and anchor rod construction device - Google Patents

One-way rotary spraying anchor rod and anchor rod construction device Download PDF

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Publication number
CN203080519U
CN203080519U CN 201220735847 CN201220735847U CN203080519U CN 203080519 U CN203080519 U CN 203080519U CN 201220735847 CN201220735847 CN 201220735847 CN 201220735847 U CN201220735847 U CN 201220735847U CN 203080519 U CN203080519 U CN 203080519U
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China
Prior art keywords
nozzle
anchor rod
slip casting
casting chamber
rod
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CN 201220735847
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Chinese (zh)
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张启军
杨岗
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QINGDAO YE GAO CONSTRUCTION ENGINEERING Co Ltd
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QINGDAO YE GAO CONSTRUCTION ENGINEERING Co Ltd
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Abstract

The utility model provides a one-way rotary spraying anchor rod and an anchor rod construction device, and the problem that an existing rotary spraying drill rod cannot prevent sandy soil outside a rod body from entering a grouting cavity through a nozzle and blocking the nozzle during processes of mounting and dismounting the rod. The one-way rotary spraying anchor rod and the anchor rod construction device comprise a disposable anchor rod body, a drill bit which is arranged at the front end of the anchor rod body, and a grouting cavity inside the anchor rod boy, wherein a grout outlet is formed at the front end of the drill bit, a nozzle body is arranged at a position, close to the drill bit, of the anchor rod body, a one-way valve is arranged at the front end of the grouting cavity, a valve cavity of the one-way valve is communicated with the grouting cavity and the grout outlet, and a communicating end of the nozzle body and the grouting cavity is provided with a pressure film to seal the nozzle. Due to the facts that the one-way valve is arranged at the front end of the grouting cavity, and the pressure film is arranged on the nozzle, clear water or grout can only flows outside the rod body through the one-way valve when the anchor rod drills in, and sandy soil outside the rod body is prevented from entering the rod body when the water or the grout are stopped being injected. Therefore, the sandy soil which enters the rod body is prevented from blocking the nozzle, and the one-way rotary spraying anchor rod and the anchor rod construction device are especially suitable for anchor construction in a high water head or flow plastic sandy soil stratum, and construction efficiency is extremely high.

Description

Unidirectional jet grouting anchor rod and anchor bolt construction device
Technical field
The utility model relates to construction engineering technical field, be specifically related to a kind of unidirectional jet grouting anchor rod and construction equipment, can stop when anchor bar body creeps into and unload bar that sandy soil enter slip casting chamber plug nozzle by nozzle outside the body of rod, be applicable to the construction of all kinds ground anchor, be particularly useful for high water head or stream and mould the anchor bolt construction on sandy soil stratum, the efficiency of construction height.
Background technology
Along with various places quickening of urbanization process and developing of automobile industry, the basement foundation ditch supporting more and more becomes the key technology of construction project.For with the pattern foundation pit supporting structure project of anchor pole as main support unit; when anchor bolt construction, run into high water head or stream is moulded the sandy soil stratum through regular meeting; high water head stratum moisture is big, viscosity is high; stream is moulded the sandy soil stratum and is had a large amount of drift sand stream mud; these two kinds of ground anchors are difficult to construction; drift sand easily stops up the anchor pole nozzle, and causes surface depression, has a strong impact on the safety of foundation ditch safety and surrounding enviroment.
The relatively rich preferably current of terms of settlement anti-collapse hole conventional method husky and the mud soil layer has following several at present: single sleeve pipe creeps into, two sleeve pipe creeps into, self-feeding anchor pile, wherein sleeve pipe creeps into worker's method because the protective effect of sleeve pipe, the boring hole of can not collapsing, but single sleeve pipe is owing to slag tap outside casing wall, cause sandslide easily, can only be applied to the foundation ditch of better, peripheral no important building of self-stability and pipeline; Two sleeve pipes creep in sleeve pipe slags tap, and sandslide is less, is a kind of method preferably, can solve the general sandy soil stratum of self-stability, but the stratum very poor for self-stability, that head is higher, sandy soil meeting adverse current when the loading and unloading drilling rod causes and creeps into and can't continue to sleeve pipe; Self-feeding anchor pile is taked to squeeze into by the pole body, and not only as borer drill rod but also finally as the anchor pole use, for soft stratum, one side end slip casting anchored force is difficult to reach requirement, and the adverse current sandy soil may make slip casting be difficult to realize on the other hand.
Summary of the invention
The utility model provides a kind of unidirectional jet grouting anchor rod and anchor bolt construction device, can solve existing churning drilling rod and when creeping into and unload bar, can't stop the problem that sandy soil enter slip casting chamber plug nozzle outside the body of rod by nozzle, be applicable to the construction of all kinds ground anchor, be particularly useful for the anchor bolt construction that high water head or stream are moulded the sandy soil stratum.
For reaching the purpose that solves the problems of the technologies described above, the unidirectional jet grouting anchor rod that the utility model proposed is achieved by the following technical solutions: a kind of unidirectional jet grouting anchor rod, comprise disposable anchor bar body, the slip casting chamber of the drill bit of anchor bar body front end and anchor bar body inside, chisel edge has the grout outlet that is communicated with the slip casting chamber, position near drill bit on the anchor bar body is provided with the nozzle body that is communicated with the slip casting chamber, described slip casting chamber front end is provided with and the close-fitting one way valve of front end chamber, slip casting chamber wall, the valve pocket of described one way valve is communicated with described slip casting chamber and described grout outlet, with the end that is communicated with in described slip casting chamber the pressure membrane of sealing its nozzle is installed on the described nozzle body.
In the technical solution of the utility model, also comprise following additional technical feature:
Described jet grouting anchor rod places the rolling element that is used to stop up described one way valve in the described slip casting chamber when also comprising use.
The nozzle diameter of described nozzle body is reduced outward gradually by the inner.
Link with described anchor bar body on the described nozzle body has groove, described groove be communicated with described nozzle and groove in be installed with the short tube that compresses that cooperates with the groove inner wall sealing, the described short tube that compresses is pressed on described pressure membrane on the described nozzle body.
The position that is positioned at described nozzle body rear end on the described anchor bar body is provided with flight.
Described anchor bar body is connected and composed by many removable extension bars, and screw thread all is set on the link of each described extension bar, and adjacent extension bar adopts box cupling to connect.
The utility model has also proposed a kind of unidirectional jet grouting anchor rod construction equipment, comprise high-pressure injection pump, jet grouting anchor rod on roof-bolter and the roof-bolter, described anchor pole comprises disposable anchor bar body, the slip casting chamber of the drill bit of anchor bar body front end and anchor bar body inside, chisel edge has the grout outlet that is communicated with the slip casting chamber, position near drill bit on the anchor bar body is provided with the nozzle body that is communicated with the slip casting chamber, described slip casting chamber front end is provided with and the close-fitting one way valve of front end chamber, slip casting chamber wall, the valve pocket of described one way valve is communicated with described slip casting chamber and described grout outlet, with the end that is communicated with in described slip casting chamber the pressure membrane of sealing its nozzle is installed on the described nozzle body.
Described jet grouting anchor rod places the rolling element that is used to stop up described one way valve in the described slip casting chamber when also comprising use.
The nozzle diameter of described nozzle body is reduced outward gradually by the inner.
Link with described anchor bar body on the described nozzle body has groove, described groove be communicated with described nozzle and groove in be installed with the short tube that compresses that cooperates with the groove inner wall sealing, the described short tube that compresses is pressed on described pressure membrane on the described nozzle body.
The position that is positioned at described nozzle body rear end on the described anchor bar body is provided with flight.
Compared with prior art, the utility model is by being provided with one way valve at slip casting chamber front end, the place is provided with pressure membrane at nozzle, clear water or slurries are gushed out beyond the body of rod by one way valve, and stop water filling or slurry the time can stop the outer sandy soil of the body of rod to flow in the body of rod, thereby avoided entering the sandy soil plug nozzle of the body of rod, be particularly useful for the anchor bolt construction that high water head or stream are moulded the sandy soil stratum, efficiency of construction is high.
Description of drawings
Fig. 1 is the structural representation of the unidirectional jet grouting anchor rod of the utility model embodiment;
Fig. 2 is an II part-structure schematic diagram among Fig. 1;
Fig. 3 is the structural representation of nozzle body among the utility model embodiment;
Fig. 4 is the structural representation of the unidirectional jet grouting anchor rod construction equipment of the utility model embodiment.
The specific embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Referring to figs. 1 through shown in Figure 3, the unidirectional jet grouting anchor rod M of present embodiment, comprise the drill bit 2 of disposable anchor bar body 1, anchor bar body 1 front end and the slip casting chamber 3 of anchor bar body 1 inside, the front end of drill bit 2 has the grout outlet 4 that is communicated with slip casting chamber 3, position near drill bit 2 on the anchor bar body 1 is provided with the nozzle body 5 that is communicated with slip casting chamber 3, nozzle body 5 is provided with standard thread, closely is connected with anchor bar body 1.Slip casting chamber 3 front ends are provided with and the close-fitting one way valve 6 of slip casting chamber 3 front end chamber walls, and the valve pocket of one way valve 6 is communicated with slip casting chamber 3 and grout outlet 4, with the end that is communicated with in slip casting chamber 3 pressure membrane 7 of sealing its nozzle are installed on the nozzle body 5.
Concrete, in anchor bolt construction, present embodiment jet grouting anchor rod M creeps under oblique as drilling rod, in drilling process, supply to drill bit 2 with low pressure clear water or slurries by grouting pump, clear water or slurries are gushed out by one way valve 6, grout outlet 4 beyond the drill bit 2, and auxiliary drilling rod creeps into to sand layer desired depth.Because one way valve 6 is set, connecting and disconnecting drill rod can stop the outer sandy soil of the body of rod to flow in the body of rod when stopping water filling or slurry, thereby has avoided entering the sandy soil plug nozzle 5-1 of the body of rod.When creeping into to the needs position, stop up one way valve 6, high-pressure pump is carried the high pressure slurries to slip casting chamber 3, after the slurries of carrying reach certain pressure (being generally 10-15MPa), the pressure membrane 7 at nozzle 5-1 place is broken, and slurries eject from nozzle 5-1, sandy soil high pressure cutting towards periphery, continue at a slow speed jet grouting anchor rod M to be crept into forward and the rotary-jet slurries, pressure remains on 15-35MPa, until projected depth.After churning finished, anchor bar body 1 was stayed in the rotary churning pile, does not reuse.
Nozzle 5-1 is conical, and its diameter is reduced to the inner gradually by the outer end, so that spray.
For ease of stopping up one way valve 6, jet grouting anchor rod also comprises rolling element 8 in the present embodiment, the diameter of rolling element 8 is greater than the internal diameter of one way valve 6, diameter less than slip casting chamber 3, be placed in the slip casting chamber 3 from anchor bar body 1 during use, rolling element 8 is rolled to slip casting chamber 3 front ends and stops up one way valve 6 under action of gravity, convenient and swift.
Pressure membrane 7 is arranged in the nozzle body 5 in the present embodiment, being installed on the nozzle body 5 link with anchor bar body 1 is provided with groove 5-2 is installed, groove 5-2 be communicated with nozzle 5-1 and groove 5-2 in be installed with cooperate with groove 5-2 inner wall sealing compress short tube 9, compress short tube 9 and adopt thin-wall steel tube, by gluing fixing pressure membrane 7 is pressed on the nozzle body 5 with nozzle body 5.
The position that is positioned at nozzle body 5 rear ends on the anchor bar body 1 is provided with flight 10, and flight 10 is no less than two circles, plays the effect that increases anchored force on the one hand, helps on the other hand creeping into.
Jet grouting anchor rod M is disposable anchor pole in the present embodiment, and anchor bar body 1 is connected and composed by many removable extension bar 1-1, and screw thread all is set on the link of each extension bar 1-1, and adjacent extension bar 1-1 adopts box cupling 11 to connect.This dispensable mould anchor pole can adopt the processing of high-quality geological tube, and engine lathe can be processed, and expense is low.
As shown in Figure 4, present embodiment has also proposed a kind of unidirectional jet grouting anchor rod construction equipment, comprises the jet grouting anchor rod M on high-pressure injection pump 12, roof-bolter 13 and the roof-bolter 13.The concrete structure of jet grouting anchor rod M referring to above-mentioned unidirectional jet grouting anchor rod embodiment and accompanying drawing 1 to accompanying drawing 4.Jet grouting anchor rod comprises the drill bit 2 of disposable anchor bar body 1, anchor bar body 1 front end and the slip casting chamber 3 of anchor bar body 1 inside, the front end of drill bit 2 has the grout outlet 4 that is communicated with slip casting chamber 3, position near drill bit 2 on the anchor bar body 1 is provided with the nozzle body 5 that is communicated with slip casting chamber 3, nozzle body 5 is provided with standard thread, closely is connected with anchor bar body 1.Slip casting chamber 3 front ends are provided with and the close-fitting one way valve 6 of slip casting chamber 3 front end chamber walls, and the valve pocket of one way valve 6 is communicated with slip casting chamber 3 and grout outlet 4, with the end that is communicated with in slip casting chamber 3 pressure membrane 7 of sealing its nozzle 5-1 are installed on the nozzle body 5.
Concrete, adopt the job practices and the step of present embodiment construction equipment as follows:
(1) jet grouting anchor rod M creeps under oblique as drilling rod, in drilling process, by grouting pump with low pressure clear water or slurries to drill bit 2 supplies, clear water or slurries are gushed out by one way valve 6, grout outlet 4 beyond the drill bit 2, auxiliary drilling rod creeps into to sand layer desired depth;
(2) when creeping into to the needs position, stop up one way valve 6, high-pressure pump is carried the high pressure slurries to slip casting chamber 3, after the slurries of carrying reach certain pressure (being generally 10-15MPa), the pressure membrane 7 at nozzle 5-1 place is broken, and slurries eject from nozzle 5-1, sandy soil high pressure cutting towards periphery, continue at a slow speed jet grouting anchor rod M to be crept into forward and the rotary-jet slurries, pressure remains on 15-35MPa, until projected depth;
(3) jet grouting anchor rod M churning finish and creep into put in place after, suspend about 5 minutes, anchoring section slurries pressure is reduced, dismantle body of rod outer end after, the ready screw mandrel of screwing on immediately is in order to avoid a large amount of slurries flow out roof-bolter 13 next root of displacement construction.
(4) after the anchoring section slurries solidify 7-28 days, install billet, carry out the prestressed stretch-draw locking by designing requirement.
Nozzle 5-1 is conical, and its diameter is reduced to the inner gradually by the outer end, so that spray.
For ease of stopping up one way valve 6, jet grouting anchor rod also comprises rolling element 8 in the present embodiment, the diameter of rolling element 8 is greater than the internal diameter of one way valve 6, diameter less than slip casting chamber 3, be placed in the slip casting chamber 3 from anchor bar body 1 during use, rolling element 8 is rolled to slip casting chamber 3 front ends and stops up one way valve 6 under action of gravity, convenient and swift.
Pressure membrane 7 is arranged in the nozzle body 5 in the present embodiment, being installed on the nozzle body 5 link with anchor bar body 1 is provided with groove 5-2 is installed, groove 5-2 be communicated with nozzle 5-1 and groove 5-2 in be installed with cooperate with groove 5-2 inner wall sealing compress short tube 9, compress short tube 9 and adopt thin-wall steel tube, by gluing fixing pressure membrane 7 is pressed on the nozzle body 5 with nozzle body 5.
The installation of pressure membrane 7 is to be provided with the link of anchor bar body 1 groove 5-2 is installed on nozzle body 5, groove 5-2 be communicated with nozzle 5-1 and groove 5-2 in be installed with cooperate with groove 5-2 inner wall sealing compress short tube 9, compress short tube 9 and adopt thin-wall steel tube, by gluing fixing pressure membrane 7 is pressed on the nozzle body 5 with nozzle body 5.
The above, it only is preferred embodiment of the present utility model, be not to be the restriction of the utility model being made other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of technical solutions of the utility model according to technical spirit of the present utility model.

Claims (10)

1. unidirectional jet grouting anchor rod, comprise the drill bit of disposable anchor bar body, anchor bar body front end and the slip casting chamber of anchor bar body inside, chisel edge has the grout outlet that is communicated with the slip casting chamber, position near drill bit on the anchor bar body is provided with the nozzle body that is communicated with the slip casting chamber, it is characterized in that: described slip casting chamber front end is provided with and the close-fitting one way valve of front end chamber, slip casting chamber wall, the valve pocket of described one way valve is communicated with described slip casting chamber and described grout outlet, with the end that is communicated with in described slip casting chamber the pressure membrane of sealing its nozzle is installed on the described nozzle body.
2. unidirectional jet grouting anchor rod according to claim 1 is characterized in that: described jet grouting anchor rod places the rolling element that is used to stop up described one way valve in the described slip casting chamber when also comprising use.
3. unidirectional jet grouting anchor rod according to claim 2 is characterized in that: the nozzle diameter of described nozzle body is reduced outward gradually by the inner.
4. unidirectional jet grouting anchor rod according to claim 3, it is characterized in that: the link with described anchor bar body on the described nozzle body has groove, described groove be communicated with described nozzle and groove in be installed with the short tube that compresses that cooperates with the groove inner wall sealing, the described short tube that compresses is pressed on described pressure membrane on the described nozzle body.
5. according to each described unidirectional jet grouting anchor rod in the claim 1 to 4, it is characterized in that: the position that is positioned at described nozzle body rear end on the described anchor bar body is provided with flight.
6. unidirectional jet grouting anchor rod according to claim 5 is characterized in that: described anchor bar body is connected and composed by many removable extension bars, and screw thread all is set on the link of each described extension bar, and adjacent extension bar is connected by box cupling.
7. unidirectional jet grouting anchor rod construction equipment, comprise high-pressure injection pump, jet grouting anchor rod on roof-bolter and the roof-bolter, it is characterized in that: described anchor pole comprises disposable anchor bar body, the slip casting chamber of the drill bit of anchor bar body front end and anchor bar body inside, chisel edge has the grout outlet that is communicated with the slip casting chamber, position near drill bit on the anchor bar body is provided with the nozzle body that is communicated with the slip casting chamber, described slip casting chamber front end is provided with and the close-fitting one way valve of front end chamber, slip casting chamber wall, the valve pocket of described one way valve is communicated with described slip casting chamber and described grout outlet, with the end that is communicated with in described slip casting chamber the pressure membrane of sealing its nozzle is installed on the described nozzle body.
8. unidirectional jet grouting anchor rod construction equipment according to claim 7 is characterized in that: described jet grouting anchor rod places the rolling element that is used to stop up described one way valve in the described slip casting chamber when also comprising use.
9. unidirectional jet grouting anchor rod construction equipment according to claim 8, it is characterized in that: the nozzle diameter of described nozzle body is reduced outward gradually by the inner.
10. unidirectional jet grouting anchor rod construction equipment according to claim 9, it is characterized in that: the link with described anchor bar body on the described nozzle body has groove, described groove be communicated with described nozzle and groove in be installed with the short tube that compresses that cooperates with the groove inner wall sealing, the described short tube that compresses is pressed on described pressure membrane on the described nozzle body.
CN 201220735847 2012-12-28 2012-12-28 One-way rotary spraying anchor rod and anchor rod construction device Active CN203080519U (en)

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Application Number Priority Date Filing Date Title
CN 201220735847 CN203080519U (en) 2012-12-28 2012-12-28 One-way rotary spraying anchor rod and anchor rod construction device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220735847 CN203080519U (en) 2012-12-28 2012-12-28 One-way rotary spraying anchor rod and anchor rod construction device

Publications (1)

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CN203080519U true CN203080519U (en) 2013-07-24

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104088278A (en) * 2014-07-22 2014-10-08 黄辉 Construction method and device for strong water column chambering anchor cable/rod
CN104563106A (en) * 2014-12-30 2015-04-29 中国建筑第八工程局有限公司 Rotary spraying anchor rope drill body and construction process of rotary spraying anchor rope

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104088278A (en) * 2014-07-22 2014-10-08 黄辉 Construction method and device for strong water column chambering anchor cable/rod
CN104088278B (en) * 2014-07-22 2016-04-20 黄辉 A kind of construction method of powerful water column hole reaming of anchor rod and device
CN104563106A (en) * 2014-12-30 2015-04-29 中国建筑第八工程局有限公司 Rotary spraying anchor rope drill body and construction process of rotary spraying anchor rope

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