CN106759325A - A kind of many enlarged footing jet grouting anchor rod rod devices of cloth-bag type and its construction method - Google Patents
A kind of many enlarged footing jet grouting anchor rod rod devices of cloth-bag type and its construction method Download PDFInfo
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- CN106759325A CN106759325A CN201710166935.0A CN201710166935A CN106759325A CN 106759325 A CN106759325 A CN 106759325A CN 201710166935 A CN201710166935 A CN 201710166935A CN 106759325 A CN106759325 A CN 106759325A
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- cloth
- enlarged footing
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
Abstract
The present invention relates to a kind of many enlarged footing jet grouting anchor rod rod devices of cloth-bag type and its construction method, the rod device is made up of center rod, carrying board component, slurry bag, slurry bag fixed plate, slurry bag diameter regulator, solidification material hardenite and solidified earth combination；Center rod and connection being screwed by the lower nuts and upper nut in carrying board component and the center body of rod for carrying board component；Slurry bag wraps up the assembly of center rod and carrying board component at anchor rod anchored section, and filling completely solidifies material hardenite, the formation many enlarged footing anchoring bodys of cloth-bag type in slurry bag.The present invention makes each enlarged footing uniform stressed by setting elastomeric pad under loading plate, so that can play a role, meanwhile, multiple enlarged footings increased compression area, and irregular shape increases side friction, improve anchor pole total bearing capacity.
Description
Technical field
The present invention relates to the construction method and rod device of a kind of ground anchorage system for being applied to building engineering field.
Background technology
Anchoring in rock and soil technology as a kind of superior technological means of Technological Economy, in side slope, foundation ditch, tunnel, subway, anti-
Played an important role in the engineering construction such as floating, stability of rock-soil body can be improved.Churning enlarging anchor rod compares traditional slip casting anchor
The anchor rod anchored effect of bar, mechanicalness is good.Because with enlarged footing, churning enlarging anchor rod is carried compared with total length equal diameter anchor pole
Power has a distinct increment.But, containing only an enlarged footing, its bearing capacity is limited, can such as make churning for the churning enlarging anchor rod for using at present
Enlarging anchor rod has multiple enlarged footings can to increase substantially anchor pole bearing capacity.But when enlarging anchor rod has multiple enlarged footings, by
Loading plate in the deformation characteristic of its center rod will cause anchor rod anchored section of front end enlarged footing is subject to crushing because displacement is excessive,
And the loading plate in anchor rod anchored section of rear end enlarged footing does not play a role because of displacement very little.I.e. because center rod is in anchoring body
The deflection of middle different parts is different, causes different from the displacement of the loading plate that center rod is connected in each enlarged footing and stress not
Uniformly, the carrying effect of each enlarged footing is not given full play to.
A kind of many enlarged footing jet grouting anchor rod rod devices of cloth-bag type and construction method provided for above-mentioned situation, the present invention
Each enlarged footing uniform stressed in multiple enlarged footing jet grouting anchor rod bodies can be made, each enlarged footing is played a role, so that cloth
The many enlarged footing jet grouting anchor rods of pocket type are possibly realized.
The content of the invention
It is an object of the invention to provide a kind of many enlarged footing jet grouting anchor rod rod devices of cloth-bag type and construction method.In anchor
Multiple enlarged footings are set in bar anchoring body, by increasing the elastomeric pad of different strokes at the loading plate in each enlarged footing,
Such that it is able to eliminate each loading plate discontinuity caused by displacement is different at loading plate in each enlarged footing, make to be held in each enlarged footing
Support plate uniform stressed, each enlarged footing can play a role.
A kind of many enlarged footing jet grouting anchor rod rod devices of cloth-bag type that the present invention is provided, its structure composition is as follows：
The rod device is by center rod, carrying board component, slurry bag, slurry bag fixed plate, slurry bag diameter regulator, solidification material hardening
Body and solidified earth combination are constituted.Board component is wherein carried by lower nuts, elastomeric pad, loading plate, upper nut and carrying
Plate build-in muscle is constituted.The connection of center rod and carrying board component is by the lower nuts and upper nut in carrying board component with
Core bar body is screwed.Slurry bag wraps up the assembly of center rod and carrying board component at anchor rod anchored section, starches one end of bag
Through starch bag fixed plate on wire or be bolted to anchor rod anchored section of bottom, starch bag one end from anchor rod anchored section of bottom
Position in 4m distance ranges.Slurry bag diameter regulator, slurry bag diameter regulator and slurry are laid at the design attitude of slurry bag surface
Bag is fixedly connected.Filling completely solidifies material hardenite in slurry bag, forms many enlarged footing anchoring bodys of cloth-bag type.Slurry bag and drilling outer wall soil
Filled by solidified earth combination between body.
Center rod is the threaded deformed bar of total length, and material, length and diameter determine according to design requirement.
Main load-carrying member when board component is rockbolt stress is carried, its quantity and spacing are according to the enlarged footing quantity for designing
Determine with spacing.Board component is carried to be made up of lower nuts, elastomeric pad, loading plate, upper nut and loading plate build-in muscle group,
Wherein elastomeric pad is located between lower nuts and loading plate, and loading plate is located between elastomeric pad and upper nut.
Upper nut and lower nuts are the nut matched with center rod diameter and screw thread of customization.Its effect
It is the position for fixing elastomeric pad and loading plate on center rod.4~the 6cm of length range of upper nut, lower nuts
6~12cm of length range.
Elastomeric pad is for rough surface that deformation range is 2~10mm and the elastomeric pad with ageing resistance.Including
But it is not limited to elastomer plastic circle, steel turn.In anchor rod body device from anchorage body front end successively under loading plate
The deformation range of the elastomeric pad of placement is successively decreased, at this when the specific deformation range of elastomeric pad is according to center rod stress everywhere
The displacement at place, determines through designing or testing.In anchor rod body device under the loading plate nearest from anchorage body rear end not
Elastomeric pad is set.The effect of elastomeric pad is to eliminate each loading plate stress caused by displacement is different at each loading plate in enlarged footing
It is uneven, make each enlarged footing uniform stressed, so that each enlarged footing can play a role.
Loading plate is shaped as circular or regular polygon, and equivalent diameter is slightly less than non-anchored section bore diameter, 2~10cm is thick
The tensile strength for meeting design requirement and compression strength sheet material, including but not limited to steel plate, reinforced plastic plate, FRP plate.It is made
With for the power of center rod to be passed to when center rod stress the solidification material hardenite in slurry bag.
Loading plate build-in muscle is the reinforcing bar of commercially available a diameter of 4~φ of φ 14, including but not limited to regular reinforcement, screw-thread steel
Muscle.Loading plate build-in muscle prepares curl, and 50~100mm of spacing, quantity is determined by center rod design bearing capacity.Weld one end
It is connected on loading plate.Its effect is to increase the adhesion between loading plate and surrounding solidification material hardenite.
Slurry bag is that infiltration coefficient is less than 1 × 10-6Cm/s, Tensile strength is more than 4MPa and shaggy material bag,
Including but not limited to terylene composite earthwork cloth starches bag, high-strength polypropylene chopped fiber geotextiles, polyethylene fibre high-strength geotextile.Its diameter
Determined according to design requirement with length.
Slurry bag fixed plate is the commercially available flanged plate for meeting design requirement, including but not limited to PVC flanges clinker plate, steel
Flanged plate.Its effect is will to starch bag to be fixed on anchor rod anchored section of front-end and back-end.
Slurry bag diameter regulator is the material members for meeting tensile strength that design requirement specifies and elastic modelling quantity, including but
It is not limited to wire loop and nut, steel strand wires.According to the requirement for bearing capacity of center rod, slurry bag is set on the design attitude of slurry bag
Diameter regulator, for adjusting the slurry sack footpath at the position, makes anchoring body that the cloth-bag type of approximate calabash shape is formed after slip casting
Many enlarged footings.
Solidification material hardenite meets the solidification material slurries of design requirement, including but not limited to cement paste, cement for intensity
Mortar, cement polymer are starched and cement polymer mortar only.
Solidified earth combination is to solidify the mixture produced after material slurries mix with surrounding soil.
The many enlarged footing jet grouting anchor rod construction methods of a kind of cloth-bag type that the present invention is provided, are carried out using following steps：
（1）Rig is in place, centering, leveling；
（2）Draw hole, drilling to designed elevation, according to churning diameter and formation selection construction technology（Single, double, triple is managed again）；
（3）In anchor rod anchored section of high-pressure rotary-spray；
Slurries：Starched using solidification material, the ratio of mud is 1.0~2.0；
Churning first：High-pressure slip-casting pump pressure is 20~30Mpa, and rotating speed is 700~1000r/min；Rig lifting speed is 20
~25cm/min, rotating speed is 20~25r/min, and flow velocity is 0.06~0.08m3/ min, it is laggard that churning depth reaches projected depth
The secondary churning of row；
Secondary churning：High-pressure slip-casting pump pressure is 20~25Mpa, and rotating speed is 700~900r/min；Rig lifting speed be 15~
20cm/min, rotating speed is 15~20r/min, and flow velocity is 0.065~0.075m3/ min, drilling rod is proposed after terminating.
Injection rear slurry forms solidified earth combination with soil in hole.
（4）The body of rod and anchoring section are assembled and transferred；
Loading plate is installed：Set to leading portion successively from anchor rod anchored section of rear end on center rod and carry board component.Loading plate group
The erection sequence of part is after fixing lower nuts, in lower nuts upper ends elastomeric pad, to be held in elastomeric pad upper ends
Support plate, then fixes upper nut, and loading plate build-in muscle is then welded on loading plate.Meanwhile, assign Grouting Pipe.
Slurry bag is installed：Slurry bag is installed in the range of anchor rod anchored segment length, is consolidated the one end for starching bag using bag fixed plate is starched
Anchor rod anchored section of bottom is scheduled on, the other end is fixed in the anchoring fragment position in the range of anchor rod anchored section of bottom 4m, and
The design attitude for starching bag sets slurry bag diameter regulator.
Rod device is transferred：Anchor rod body device is transferred using rig.
（5）Slip casting in slurry bag.
Slurries：Starched using solidification material, the ratio of mud is 0.38~0.45；
Grouting pressure：0.8~1.5MPa；Grouting amount：Theoretical grouting amount is calculated according to design anchoring depth；After the completion of slip casting,
Withdraw from Grouting Pipe.
A kind of many enlarged footing jet grouting anchor rod rod devices of cloth-bag type and construction method that the present invention is provided are applied to variously
Layer, such as：Weak soil, complete, strongly weathered sand-rock, sand, cohesive soil, silt.Compared with existing mooring rod technique, with advantages below：
1st, multiple loading plates are provided with anchor rod anchored section, and loading plate build-in muscle has been welded on loading plate, at utmost
Improve cohesive strength between center rod and solidification material slurry.
The 2nd, the elastomeric pad of different distortion scope is set under loading plate, and displacement difference is led at each loading plate in elimination enlarged footing
Each loading plate discontinuity for causing, makes each enlarged footing uniform stressed, so that each enlarged footing can play a role.
3rd, multiple enlarged footings of approximate Pear-Shaped are formed after anchoring body slip casting, compression area is increased, compression dispersion subtracts
The small requirement to injecting cement paste intensity；In addition, the side between the irregular Pear-Shaped injecting cement paste for being formed and rotary jet grouting body is rubbed
Resistance increases, and improves total bearing capacity.
Brief description of the drawings
Fig. 1 is anchoring section part-structure schematic diagram；
Fig. 2 is to carry board component detail drawing；
Fig. 3 is spiral bar detail drawing；
Fig. 4 is the anchor pole front view of embodiment 2.
Corresponding component title in accompanying drawing represented by each numeral：
1. center rod
2. board component is carried
3. lower nuts
4. elastomeric pad
5. loading plate
6. upper nut
7. loading plate build-in muscle
8. bag is starched
9. bag fixed plate is starched
10. bag diameter regulator is starched
11. solidification material hardenites
12. solidified earth combinations.
Specific embodiment
The many enlarged footing jet grouting anchor rod bodies of rod of a kind of cloth-bag type for being provided the present invention with specific embodiment below in conjunction with the accompanying drawings
Device and construction method carry out exemplary description, but the present invention is not limited by following embodiments, can skill of the invention
Art scheme determines specific embodiment with actual conditions.
Embodiment one
Reference picture 1, Fig. 2, Fig. 3, certain slope support engineering, anchor rod anchored segment length is 5.5m, many using cloth-bag type of the invention
Enlarged footing jet grouting anchor rod rod device, the device for specifically including and each device specifications parameter are as follows：Center rod 1 is using M40 essences
Roll screw-thread steel；Lower nuts 3 and upper nut 6 customize the nut matched with M40 fining twisted steels, and the length of lower nuts 3 is
10cm, the length of upper nut 6 is 4cm；Elastomeric pad 4 is respectively 3 elastomer plastics of 7mm, 4mm, 2mm using deformation range
Circle；The use of loading plate 5 4cm is thick, a diameter of 11cm circular steel plate；Loading plate build-in muscle 7 uses a diameter of φ 7, and spacing is
The regular reinforcement of 50mm.It is 1 × 10 that slurry bag 8 uses infiltration coefficient-6Cm/s, tensile strength are 5MPa, a diameter of 13cm, length are
The terylene composite earthwork cloth slurry bag of 3.5m；Oar bag fixed plate 9 is PVC flange clinker plates；Oar bag diameter regulator 10 uses steel wire
Circle and nut.
Specific construction technique is as follows:Using dual pipe technological borehole to projected depth, it is 1.5 to use the ratio of mud to rig
Cement grout carries out churning, and high-pressure slip-casting pump pressure is 20Mpa during churning first, and rotating speed is 800r/min；Rig lifts speed
It is 20cm/min, rotating speed is 20r/min, and flow velocity is 0.06m3/ min, churning depth carries out secondary churning after reaching projected depth；
The high-pressure slip-casting pump pressure of secondary churning is 25Mpa, and rotating speed is 900r/min；Rig lifting speed is 18cm/min, and rotating speed is
18r/min, flow velocity is 0.075m3/ min, drilling rod is proposed after terminating.Injection rear slurry forms soil cement combination with soil in hole
12.At the same time, anchor rod body and anchoring section are assembled, from anchor rod anchored section of rear end successively to leading portion on M40 fining twisted steels 1
3 groups of carrying board components 2 are set, and every group of carrying board component 2 is separated by 1m.The erection sequence of board component 2 is carried to fix 10cm in advance
After thick lower nuts 3, in the upper ends elastomer plastic circle 4 of lower nuts 3, in the upper ends steel plate of elastomer plastic circle 4
5, the thick upper nuts 6 of 4cm are then fixed, then weld diameter is φ 7 on steel plate 5, and spacing is the regular reinforcement 7 of 50mm.
The deformation range of the elastomer plastic circle 4 installed from top to bottom is followed successively by 2mm, 4mm, 7mm.Meanwhile, assign Grouting Pipe.In anchor pole
Terylene composite earthwork cloth slurry bag 8 is installed in the range of the upward 3.5m in anchoring section bottom, terylene is combined using PVC flange clinkers plate 9
One end of geotextiles slurry bag 8 is fixed on anchor rod anchored section of bottom, and the other end is fixed on from the anchor rod anchored section of anchor of bottom 3.5m
Gu in fragment position, and setting wire loop and nut 10 at 1m positions and 2m positions is played in the bottom of terylene composite earthwork cloth slurry bag 8.
After installing anchor rod body device is transferred using rig.Then the ratio of mud is injected to anchoring section using the grouting pressure of 1.5MPa
It is 0.45 cement mortar, after the completion of slip casting, withdraws from Grouting Pipe.
Embodiment two
Reference picture 2, Fig. 3, Fig. 4, certain slope support engineering, anchor rod anchored segment length is 4m, expands using cloth-bag type of the invention more
Major part jet grouting anchor rod rod device, the device for specifically including and each device specifications parameter are as follows：Center rod 1 uses M36 screw threads
Steel；The nut that lower nuts 3 and the customization of upper nut 6 match with M36 screw-thread steels, the length of lower nuts 3 is 8cm, top spiral shell
Female 6 length are 4cm；Elastomeric pad 4 is respectively 4 steel turns of 8mm, 5mm, 2mm using deformation range；Loading plate 5 is adopted
The FRP plate of thick, a diameter of 10cm with 5cm；Loading plate build-in muscle 7 uses a diameter of φ 9, and spacing is the regular reinforcement of 80mm.Oar
It is 1 × 10 that bag 8 uses infiltration coefficient-6The polyethylene fibre that cm/s, tensile strength are 4.5MPa, a diameter of 12cm, length is 4m
High-strength geotextile；Oar bag fixed plate 9 is steel flanges plate；Oar bag diameter regulator 10 uses steel strand wires.
Specific construction technique is as follows:Using triple tube technological borehole to projected depth, it is 1.0 to use the ratio of mud to rig
Cement grout carries out churning, and high-pressure slip-casting pump pressure is 25Mpa during churning first, and rotating speed is 700r/min；Rig lifts speed
It is 23cm/min, rotating speed is 23r/min, and flow velocity is 0.08m3/ min, churning depth carries out secondary churning after reaching projected depth；
The high-pressure slip-casting pump pressure of secondary churning is 20Mpa, and rotating speed is 700r/min；Rig lifting speed is 15cm/min, and rotating speed is
15r/min, flow velocity is 0.065m3/ min, drilling rod is proposed after terminating.Injection rear slurry forms soil cement combination with soil in hole
12.At the same time, anchor rod body and anchoring section are assembled, and are set to leading portion successively from anchor rod anchored section of rear end on M36 screw-thread steels 1
3 groups of carrying board components 2, every group of carrying board component 2 is separated by 80cm.The erection sequence for carrying board component 2 is to fix 8cm thickness in advance
After lower nuts 3, in the upper ends steel turn 4 of lower nuts 3, in the upper ends steel plate 5, Ran Hougu of steel turn 4
Determine the thick upper nuts 6 of 4cm, then weld diameter is φ 9 on steel plate 5, spacing is the regular reinforcement 7 of 80mm.From top to bottom
The deformation range of the steel turn 4 of installation is followed successively by 2mm, 5mm, 8mm.Meanwhile, assign Grouting Pipe.In anchor rod anchored segment limit
Interior installation polyethylene fibre high-strength geotextile slurry bag 8, using being fixed on terylene composite earthwork cloth slurry bag 8 of flange fixed plate 9
Anchor rod anchored section of two ends, and the colligation at the bottom 1m positions of polyethylene fibre high-strength geotextile slurry bag 8,2m and 3m positions
Steel strand wires 10.After installing anchor rod body device is transferred using rig.Then noted to anchoring section using the grouting pressure of 1MPa
Enter the cement mortar that the ratio of mud is 0.38, after the completion of slip casting, withdraw from Grouting Pipe.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (11)
1. many enlarged footing jet grouting anchor rod rod devices of a kind of cloth-bag type, it is characterised in that：The rod device is by center rod（1）、
Carry board component（2）, slurry bag（8）, slurry bag fixed plate（9）, slurry bag diameter regulator（10）, solidification material hardenite（11）And solidification
Native combination（12）Composition；Wherein carry board component（2）By lower nuts（3）, elastomeric pad（4）, loading plate（5）, top spiral shell
It is female（6）With loading plate build-in muscle（7）Composition；Center rod（1）With carrying board component（2）Connection by carrying board component（2）In
Lower nuts（3）And upper nut（6）With being screwed for the center body of rod；Slurry bag（8）Center-pole at anchor rod anchored section of parcel
Part（1）With carrying board component（2）Assembly, starch bag（8）One end through starch bag fixed plate（9）On wire or bolt it is solid
Anchor rod anchored section of bottom is scheduled on, bag is starched（8）Position of the one end in anchor rod anchored section of bottom 4m distance range；In slurry bag（8）
Slurry bag diameter regulator is laid at the design attitude of surface（10）, starch bag diameter regulator（10）With slurry bag（8）It is fixedly connected；Slurry bag
（8）Interior filling completely solidifies material hardenite（11）, form many enlarged footing anchoring bodys of cloth-bag type；Slurry bag（8）With between the drilling outer wall soil body
By solidified earth combination（12）Filling.
2. many enlarged footing jet grouting anchor rod rod devices of a kind of cloth-bag type according to claim 1, it is characterised in that：It is described
Center rod（1）It is the threaded deformed bar of total length.
3. many enlarged footing jet grouting anchor rod rod devices of a kind of cloth-bag type according to claim 1, it is characterised in that：It is described
Carrying board component（2）In component locations be followed successively by lower nuts from top to bottom（3）, elastomeric pad（4）, loading plate（5）, on
Portion's nut（6）, loading plate build-in muscle（7）It is welded on loading plate（5）On；Carry board component（2）Quantity and spacing according to design
Enlarged footing quantity and spacing determine.
4. many enlarged footing jet grouting anchor rod rod devices of a kind of cloth-bag type according to claim 1 or claim 3, it is special
Levy and be：Described elastomeric pad（4）For deformation range is the rough surface and cushion with ageing resistance of 2 ~ 10mm
Piece, including elastomer plastic circle or steel turn；In anchor rod body device from anchorage body front end successively under loading plate
The elastomeric pad of placement（4）Deformation range successively decrease, the specific deformation range of elastomeric pad is according to center rod everywhere（1）Stress
When displacement in this place, through designing or experiment determines；The carrying nearest from anchorage body rear end in anchor rod body device
Elastomeric pad is not provided with plate（4）.
5. many enlarged footing jet grouting anchor rod rod devices of a kind of cloth-bag type according to claim 1 or claim 3, it is special
Levy and be：Described loading plate is circular or regular polygon, equivalent diameter are slightly less than non-anchored section bore diameter, 2 ~ 10cm is thick expires
The tensile strength and compression strength sheet material of sufficient design requirement, including steel plate, reinforced plastic plate or FRP plate.
6. many enlarged footing jet grouting anchor rod rod devices of a kind of cloth-bag type according to claim 1 or claim 3, it is special
Levy and be：Described loading plate build-in muscle（7）It is the reinforcing bar of 4 ~ φ of diameter phi 14, including regular reinforcement or spiral；Carry
Plate build-in muscle（7）Curl is prepared, 50 ~ 100mm of spacing, quantity is determined by center rod design bearing capacity.
7. many enlarged footing jet grouting anchor rod rod devices of a kind of cloth-bag type according to claim 1, it is characterised in that：It is described
Slurry bag（8）For infiltration coefficient is less than 1 × 10-6Cm/s, Tensile strength is more than 4MPa and shaggy material bag, including
Terylene composite earthwork cloth slurry bag, high-strength polypropylene chopped fiber geotextiles or polyethylene fibre high-strength geotextile, its diameter and length according to
Design requirement determines.
8. many enlarged footing jet grouting anchor rod rod devices of a kind of cloth-bag type according to claim 1, it is characterised in that：It is described
Slurry bag fixed plate（9）It is flanged plate, including PVC flange clinker plates or steel flanges plate.
9. many enlarged footing jet grouting anchor rod rod devices of a kind of cloth-bag type according to claim 1, it is characterised in that：It is described
Slurry bag diameter regulator（10）To meet the material members of tensile strength that design requirement specifies and elastic modelling quantity, including steel wire
Circle, nut and steel strand wires.
10. a kind of construction method of many enlarged footing jet grouting anchor rods of cloth-bag type, is carried out using following steps：
（1）Rig is in place, centering, leveling；
（2）Draw hole, drilling to designed elevation, according to churning diameter and formation selection construction technology, is that single, double, triple is managed again
One of；
（3）In anchor rod anchored section of high-pressure rotary-spray；
Slurries use the ratio of mud to be starched for 1.0 ~ 2.0 solidification material；
The high-pressure slip-casting pump pressure of churning first is 20 ~ 30Mpa, and rotating speed is 700 ~ 1000r/min；Rig lifting speed be 20 ~
25cm/min, rotating speed is 20 ~ 25r/min, and flow velocity is 0.06 ~ 0.08m3/ min, churning depth carries out two after reaching projected depth
Secondary churning；
The high-pressure slip-casting pump pressure of secondary churning is 20 ~ 25Mpa, and rotating speed is 700 ~ 900r/min；Rig lifting speed be 15 ~
20cm/min, rotating speed is 15 ~ 20r/min, and flow velocity is 0.065 ~ 0.075m3/ min, drilling rod is proposed after terminating；
Injection rear slurry forms solidified earth combination with soil in hole（12）；
（4）Using many enlarged footing jet grouting anchor rod rod devices of cloth-bag type as described in one of claim 1-9, the body of rod and anchoring section
Assemble and transfer；
Loading plate is installed：In center rod（1）On set to leading portion successively from anchor rod anchored section of rear end and carry board component（2）；Hold
Support plate component（2）Erection sequence be：Fixed lower nuts（3）Afterwards, in lower nuts（3）Upper ends elastomeric pad 4）,
Elastomeric pad（4）Upper ends loading plate（5）, then fix upper nut（6）, then in loading plate（5）Upper welding loading plate
Build-in muscle（7）；Meanwhile, assign Grouting Pipe；
Slurry bag is installed：Slurry bag is installed in the range of anchor rod anchored segment length（8）, using starching bag fixed plate（9）Bag will be starched（8）One
End is fixed on anchor rod anchored section of bottom, and the other end is fixed in the anchoring fragment position in the range of anchor rod anchored section of bottom 4m,
And in slurry bag（8）Design attitude set slurry bag diameter regulator（10）；
Rod device is transferred：Anchor rod body device is transferred using rig.
11.（5）Slip casting in slurry bag：Slurries use the ratio of mud to be starched for 0.38 ~ 0.45 solidification material；Grouting pressure be 0.8 ~
1.5MPa；Grouting amount is calculated according to design anchoring depth；After the completion of slip casting, Grouting Pipe is withdrawn from.
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| CN110397033A (en) * | 2019-07-26 | 2019-11-01 | 安徽理工大学 | It is a kind of at bolt tool and with the how horizontal bolt soil anchor prepared at bolt tool |
| CN112096298A (en) * | 2020-09-09 | 2020-12-18 | 启东市建筑设计院有限公司 | Variable-diameter rotary spraying reinforcement anchor |
| CN112127225A (en) * | 2020-09-21 | 2020-12-25 | 山东大学 | Anti-floating self-repairing anchoring device, light soil roadbed structure and construction method |
| CN112253201A (en) * | 2020-11-23 | 2021-01-22 | 中铁四局集团有限公司 | Prestressed anchor rod with grouting and grout stopping device and using method thereof |
| CN113550308A (en) * | 2021-07-23 | 2021-10-26 | 江苏中汇岩土工程有限公司 | External anchoring device for non-metal anti-floating anchor rod |
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| CN110397033A (en) * | 2019-07-26 | 2019-11-01 | 安徽理工大学 | It is a kind of at bolt tool and with the how horizontal bolt soil anchor prepared at bolt tool |
| CN110397033B (en) * | 2019-07-26 | 2024-01-26 | 安徽理工大学 | Bolt-forming tool and multi-transverse bolt soil anchor prepared by using same |
| CN112096298A (en) * | 2020-09-09 | 2020-12-18 | 启东市建筑设计院有限公司 | Variable-diameter rotary spraying reinforcement anchor |
| CN112096298B (en) * | 2020-09-09 | 2022-05-03 | 启东市建筑设计院有限公司 | Variable-diameter rotary spraying reinforcement anchor machining equipment |
| CN112127225A (en) * | 2020-09-21 | 2020-12-25 | 山东大学 | Anti-floating self-repairing anchoring device, light soil roadbed structure and construction method |
| CN112127225B (en) * | 2020-09-21 | 2022-02-11 | 山东大学 | Construction method of anti-floating self-repairing anchoring device and light soil roadbed structure |
| CN112253201A (en) * | 2020-11-23 | 2021-01-22 | 中铁四局集团有限公司 | Prestressed anchor rod with grouting and grout stopping device and using method thereof |
| CN113550308A (en) * | 2021-07-23 | 2021-10-26 | 江苏中汇岩土工程有限公司 | External anchoring device for non-metal anti-floating anchor rod |
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