CN107447755A - A kind of anchor pole equipment and armature boring construction method - Google Patents

A kind of anchor pole equipment and armature boring construction method Download PDF

Info

Publication number
CN107447755A
CN107447755A CN201710744230.2A CN201710744230A CN107447755A CN 107447755 A CN107447755 A CN 107447755A CN 201710744230 A CN201710744230 A CN 201710744230A CN 107447755 A CN107447755 A CN 107447755A
Authority
CN
China
Prior art keywords
drilling rod
supervisor
anchor pole
injected hole
drill bit
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.)
Pending
Application number
CN201710744230.2A
Other languages
Chinese (zh)
Inventor
翟玉新
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway Construction Group Co Ltd
Original Assignee
China Railway Construction Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Railway Construction Group Co Ltd filed Critical China Railway Construction Group Co Ltd
Priority to CN201710744230.2A priority Critical patent/CN107447755A/en
Publication of CN107447755A publication Critical patent/CN107447755A/en
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74Means for anchoring structural elements or bulkheads
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00Setting anchoring-bolts
    • E21D20/02Setting anchoring-bolts with provisions for grouting
    • E21D20/028Devices or accesories for injecting a grouting liquid in a bore-hole
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The invention discloses a kind of anchor pole equipment; the drilling rod supervisor formed including the drilling rod being sequentially connected from beginning to end by several; the outside of drilling rod supervisor is connected with blade; hollow slip casting passage is provided with drilling rod supervisor; one end of the drilling rod supervisor is connected with drill bit; drilling rod is responsible for the junction being sequentially connected with the junction of drill bit and several drilling rods head and the tail and is equipped with sealing gasket; drill bit is provided with injected hole; the outside of injected hole is provided with the injected hole protection cap being engaged with the injected hole, and injected hole protection cap is connected with drill bit;The present invention also provides a kind of armature boring construction method of anchor pole equipment.Beneficial effects of the present invention:The present invention is not used with plumber's skill, carries out retaining wall with cement mortar, low cost is cost-effective;For the present invention in construction, environmental pollution is small;Rotated when drilling rod is extracted and make it that cement mortar is effectively combined with hole wall, anti-pulling of anchor bar can be improved;Anchor pole can bear very high pressure, be adapted to more occasions, strong adaptability, and simple in construction, easy to operate.

Description

A kind of anchor pole equipment and armature boring construction method
Technical field
The present invention relates to construction engineering technical field, it particularly relates to a kind of anchor pole equipment and armature boring construction party Method.
Background technology
Anchor pole is the component that pulling force is reached to stable rock-soil layer, and rod body material is done when using steel strand wires or high-strength steel tow When, also referred to as anchor cable.A kind of component in current foundation ditch, slope retaining, generally with campshed, diaphragm wall or soil nail wall phase With reference to as main primary structure member;Traditional anchor pole is the pressure that can only bear very little in work, and applicable situation is limited.
The applicable formation volumes of suspension roof support are wide, almost cover all stratum in China, more than relatively stable level of ground water Banket for many years, cohesive soil typically uses the dry pore-forming of twist bit, the Chinese patent of Application No. 201310154494.4 discloses A kind deep foundation pit soil layer suspension roof support construction technology, comprises the following steps:(One)Telephone-moving is in place;(Two)Correct hole position Align angle;(Three)Drilling;(Four)Grouting;(Five)Put anchor pole;(Six)Pull out outer tube;(Seven)Waist rail is installed;(Eight)In advance Stress tension;(Nine)Anchor pole is examined;The present invention is simple to operate, and cost is cheap, and supporting effect is good, suitable for architectural engineering Clay, silty clay and containing the relatively low earth-retaining branch of a small amount of sand, stone argillic horizon, the deep basal pit of miscellaneous fill soil property, and level of ground water Shield.This method is cheap, although being widely used, the stratum that it is applied is limited, has certain limitation Property.
The Chinese patent of Application No. 201110038905.4 discloses a kind of anti-collapse hole construction method for anchor drilling, bag Include following steps:A, pit earthwork excavates;B, the cleaning of side slope surface dust, smooth and excavation slope unwrapping wire;Drilling machine is installed c,;D, adopt Being drilled with a section core bit, the core bit and its drilling rod are hollow types, 90~120mm of drill pipe diameter, length 1.0~ 1.2m;E, be arranged on the built-in bit bore of the inside of the core bit using a section, the built-in drill bit be it is solid, its Drilling rod is hollow, and the drill pipe diameter of the built-in drill bit is smaller 5~8mm than the drill pipe diameter of core bit, length 1.0~ 1.2m;F, step d and e are alternately repeated;G, borehole cleaning and whole exit built-in drill bit drilling rod;Anchor cable and Grouting Pipe are installed h,;I, note Starch and exit drilling rod of coring, drilling rod of coring is exited on marginal not slurry side, often exit a section core drilling rod with regard to ftercompction slip casting once;J, whole Exit the drilling rod and ftercompction slip casting is once again of coring.Although this method can be applicable various stratum, ensure that hole wall does not cave in, effect compared with It is good, but cost is high, cost is too high.
The Chinese patent of Application No. 201210064318.7 discloses a kind of self-drilling type spiral anchor rod and its with brill slip casting Stirring solidification construction technology, the support engineering of side slope is drawn suitable for soft clay area anchor.The body of rod of spiral anchor rod is provided with slurry outlet, The front end closing of anchor rod body, helical blade is welded on to the front end of anchor rod body, on the anchor rod body behind helical blade Weld stirring sheet.It is water filling while anchor rod body is crept into using spiral anchor rod with grouting stirring solidification construction technology is bored Mud, side drilling marginal not slurry, makes its slurry be projected from the slurry outlet of anchor rod body, lower that the soil body stirs with the cutting of front end helical blade It is combined, the stirring sheet that helical blade is set below, by the soil body and cement mortar uniform stirring, irregular anchor is formed after solidification Solid, increase its anchor force.The present invention makes drilling integrated with slip casting, avoids grouting behind shaft or drift lining to pressure shadow caused by foundation pit side-wall Ring, while grouting pressure can effectively be controlled, it is ensured that grouting quality.This patent is used drilling rod and anchor pole muscle body The method being combined into one, one-shot forming, hole wall collapse can be effectively prevented, but its muscle body is non-conventional material, design calculates reason By immature, cost is also higher.
The content of the invention
For the above-mentioned technical problem in correlation technique, the present invention proposes a kind of anchor pole equipment and armature boring construction party Method, the above-mentioned deficiency of prior art can be overcome.
To realize above-mentioned technical purpose, the technical proposal of the invention is realized in this way:
A kind of anchor pole equipment, including the drilling rod supervisor that the drilling rod being sequentially connected from beginning to end by several forms, the drilling rod supervisor's Outside is connected with blade, and hollow slip casting passage is provided with the drilling rod supervisor, and one end of the drilling rod supervisor is connected with drill bit, institute State the junction that drilling rod supervisor is sequentially connected with the junction of drill bit and several drilling rods head and the tail and be equipped with sealing gasket, the drill bit Injected hole is provided with, the outside of the injected hole is provided with the injected hole protection cap being engaged with the injected hole, described slip casting Hole protection cap is connected with drill bit.
Further, the injected hole protection cap is flexibly connected with drill bit.
Further, the outside of the drilling rod supervisor is provided with connection screw thread.
The present invention also provides a kind of armature boring construction method of anchor pole equipment, and this method comprises the following steps:
S1:Rig is in place, adjustment angle, auger stem drilling, reaches projected depth;
S2:Mix cement slurry, fills a small amount of basic matterial or a small amount of mud powder increase viscosity;
S3:Grouting Pipe is connected with drilling rod, starts grouting pump;
S4:Drilling rod is extracted when rotating, while injects cement mortar, pulls out drilling speed degree well according to grouting pump flow rate calculation so that cement Slurry is in time full of drilling;
S5:Anchor pole muscle body is made, is placed on standby near aperture;
S6:After drilling rod is extracted completely, anchor pole muscle body is put into time;
S7:Mend slurry in secondary aperture;
S8:Maintenance, waist rail is made, dispose anchor head, tensioning fixation.
Further, in step s 2, the ratio of mud of the cement mortar is 0.4-0.55.
Further, in step s 2, described basic matterial is carboxyl methyl cellulose, and its additive capacity is water The 3%-8% of shale amount.
Further, in step s 2, the additive capacity of the mud powder is the 5%-15% of cement quality.
Further, before step S1, should also comprise the following steps:
S0:Prepare and check, required material is ready for complete, while check whether equipment is handy.
Beneficial effects of the present invention:The present invention is not used with plumber's skill, is carried out retaining wall with cement mortar, low cost, is saved into This;For the present invention in construction, environmental pollution is small;Rotated when drilling rod is extracted and make it that cement mortar is effectively combined with hole wall, anchor can be improved Bar withdrawal resistance;Anchor pole can bear very high pressure, be adapted to more occasions, strong adaptability, and simple in construction, operation letter Just.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings Obtain other accompanying drawings.
Fig. 1 is a kind of structural map of anchor pole equipment described according to embodiments of the present invention;
Fig. 2 is drill configurations front view described according to embodiments of the present invention;
Fig. 3 is drill configurations side view described according to embodiments of the present invention;
Fig. 4 is drill configurations top view described according to embodiments of the present invention;
In figure:
1st, drilling rod is responsible for;2nd, blade;3rd, hollow slip casting passage;4th, drill bit;5th, sealing gasket;6th, injected hole;7th, injected hole protection cap; 8th, connection screw thread.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained, belong to what the present invention protected Scope.
As Figure 1-4, described a kind of anchor pole equipment according to embodiments of the present invention, including by several head and the tail successively phase The drilling rod supervisor 1 of drilling rod composition even, the outside of the drilling rod supervisor 1 is connected with blade 2, in being provided with the drilling rod supervisor 1 Empty slip casting passage 3, one end of drilling rod supervisor 1 are connected with drill bit 4, the junction of the drilling rod supervisor 1 and drill bit 4 and some The junction that individual drilling rod head and the tail are sequentially connected is equipped with sealing gasket 5, and the drill bit 4 is provided with injected hole 6, the injected hole 6 Outside is provided with the injected hole protection cap 7 being engaged with the injected hole 6, and described injected hole protection cap 7 is connected with drill bit 4.
In one embodiment, the injected hole protection cap 7 is flexibly connected with drill bit 4.
In one embodiment, the outside of the drilling rod supervisor 1 is provided with connection screw thread 8.
The present invention also provides a kind of armature boring construction method of anchor pole equipment, and this method comprises the following steps:
S1:Rig is in place, adjustment angle, auger stem drilling, reaches projected depth;
S2:Mix cement slurry, fills a small amount of basic matterial or a small amount of mud powder increase viscosity;
S3:Grouting Pipe is connected with drilling rod, starts grouting pump;
S4:Drilling rod is extracted when rotating, while injects cement mortar, pulls out drilling speed degree well according to grouting pump flow rate calculation so that cement Slurry is in time full of drilling;
S5:Anchor pole muscle body is made, is placed on standby near aperture;
S6:After drilling rod is extracted completely, anchor pole muscle body is put into time;
S7:Mend slurry in secondary aperture;
S8:Maintenance, waist rail is made, dispose anchor head, tensioning fixation.
In one embodiment, in step s 2, the water ash mass ratio of the cement mortar is 0.4-0.55.
In one embodiment, in step s 2, described basic matterial is carboxyl methyl cellulose, and it is added Dosage is the 3%-8% of cement quality.
In one embodiment, in step s 2, the additive capacity of the mud powder is the 5%-15% of cement quality.
In one embodiment, before step S1, should also comprise the following steps:
S0:Prepare and check, required material is ready for complete, while check whether equipment is handy.
In order to facilitate understand the present invention above-mentioned technical proposal, below by way of in specifically used mode to the present invention it is above-mentioned Technical scheme is described in detail.
When specifically used, anchor pole equipment of the present invention because drilling rod supervisor and the junction of drill bit and several bore The junction that bar head and the tail are sequentially connected is equipped with sealing gasket so that drilling rod can bear very high pressure, and then can adapt to more More ground environments.
Drill bit of the present invention survives enabling form, and drilling process keeps closing, by high pressure cement slurries during extraction Wash drill bit valve open, and then complete operation, the present invention is simple in construction, easy to operate.
The armature boring construction method of anchor pole equipment described in the invention, work progress are as follows:
Required material is ready for first complete, while checks whether equipment is handy, if handy, rig is in place, adjusting angle Degree, auger stem drilling, reaches projected depth, and then mix cement slurry, and adjustment water ash mass ratio is 0.4-0.55, and admixture is a small amount of Basic matterial or a small amount of mud powder, ensure its viscosity and can meet retaining wall requirement, while proof strength requirement than coincidence;Secondly will note Slurry pipe is connected with drilling rod, starts grouting pump, and drilling rod is extracted when rotating, while injects cement mortar, according to grouting pump flow rate calculation Drilling speed degree is pulled out well so that cement mortar full of drilling, then makes anchor pole muscle body, place it in standby near hell, treat in time After drilling rod is extracted completely, anchor pole muscle body is put into time, while benefit slurry is carried out to secondary aperture, is finally conserved, and makes waist rail, Dispose anchor head, tensioning fixation.
Basic matterial of the present invention is carboxyl methyl cellulose, and its additive capacity is the 3%-8% of cement quality; The additive capacity of the mud powder is the 5%-15% of cement quality.
In summary, the present invention is not used with plumber's skill, carries out retaining wall with cement mortar, low cost is cost-effective;The present invention In construction, environmental pollution is small;Rotated when drilling rod is extracted and make it that cement mortar is effectively combined with hole wall, anti-pulling of anchor bar can be improved; Anchor pole can bear very high pressure, be adapted to more occasions, strong adaptability, and simple in construction, easy to operate.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.

Claims (8)

  1. A kind of 1. anchor pole equipment, it is characterised in that the drilling rod supervisor that the drilling rod including being sequentially connected from beginning to end by several forms (1), the drilling rod supervisor(1)Outside be connected with blade(2), the drilling rod supervisor(1)It is interior to be provided with hollow slip casting passage(3), The drilling rod supervisor(1)One end be connected with drill bit(4), the drilling rod supervisor(1)With drill bit(4)Junction and several brill The junction that bar head and the tail are sequentially connected is equipped with sealing gasket(5), the drill bit(4)It is provided with injected hole(6), the injected hole (6)Outside be provided with and the injected hole(6)The injected hole protection cap being engaged(7), described injected hole protection cap(7)With brill Head(4)Connection.
  2. A kind of 2. anchor pole equipment according to claim 1, it is characterised in that the injected hole protection cap(7)With drill bit(4) It is flexibly connected.
  3. A kind of 3. anchor pole equipment according to claim 1, it is characterised in that the drilling rod supervisor(1)Outside be provided with connect Connect screw thread(8).
  4. A kind of 4. armature boring construction method of the anchor pole equipment as described in any as described in claim 1-3, it is characterised in that Comprise the following steps:
    S1:Rig is in place, adjustment angle, auger stem drilling, reaches projected depth;
    S2:Mix cement slurry, fills a small amount of basic matterial or a small amount of mud powder increase viscosity;
    S3:Grouting Pipe is connected with drilling rod, starts grouting pump;
    S4:Drilling rod is extracted when rotating, while injects cement mortar, pulls out drilling speed degree well according to grouting pump flow rate calculation so that cement Slurry is in time full of drilling;
    S5:Anchor pole muscle body is made, is placed on standby near aperture;
    S6:After drilling rod is extracted completely, anchor pole muscle body is put into time;
    S7:Mend slurry in secondary aperture;
    S8:Maintenance, waist rail is made, dispose anchor head, tensioning fixation.
  5. 5. armature boring construction method according to claim 4, it is characterised in that in step s 2, the cement mortar Water ash mass ratio is 0.4-0.55.
  6. 6. armature boring construction method according to claim 4, it is characterised in that in step s 2, described alkaline material Expect for carboxyl methyl cellulose, and its additive capacity is the 3%-8% of cement quality.
  7. 7. armature boring construction method according to claim 6, it is characterised in that in step s 2, the mud powder adds Add the 5%-15% that dosage is cement quality.
  8. 8. armature boring construction method according to claim 4, it is characterised in that before step S1, should also include such as Lower step:
    S0:Prepare and check, required material is ready for complete, while check whether equipment is handy.
CN201710744230.2A 2017-08-25 2017-08-25 A kind of anchor pole equipment and armature boring construction method Pending CN107447755A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710744230.2A CN107447755A (en) 2017-08-25 2017-08-25 A kind of anchor pole equipment and armature boring construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710744230.2A CN107447755A (en) 2017-08-25 2017-08-25 A kind of anchor pole equipment and armature boring construction method

Publications (1)

Publication Number Publication Date
CN107447755A true CN107447755A (en) 2017-12-08

Family

ID=60494081

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710744230.2A Pending CN107447755A (en) 2017-08-25 2017-08-25 A kind of anchor pole equipment and armature boring construction method

Country Status (1)

Country Link
CN (1) CN107447755A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110106864A (en) * 2019-04-25 2019-08-09 上海大学 A kind of quick processing system of soft soil foundation
CN113431076A (en) * 2021-06-24 2021-09-24 三峡大学 Self-drilling type pre-stressed anchor rod reinforcing device and method for power transmission line water flooded tower foundation
CN114837607A (en) * 2022-04-27 2022-08-02 中煤科工开采研究院有限公司 Grouting reinforcement construction process

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07259074A (en) * 1994-03-24 1995-10-09 Soil Kogyo Kk Ground improving method
CN201649099U (en) * 2010-03-18 2010-11-24 苏州凯贸铸造工业有限公司 Grout injector metal casting
CN102587366A (en) * 2012-03-13 2012-07-18 胜利油田胜利工程建设(集团)有限责任公司 Self-drilling type spiral anchor rod and construction process using self-drilling type spiral anchor rod for grouting along with drilling, stirring and curing
CN202768031U (en) * 2012-08-16 2013-03-06 朱大刚 Hollow grouting anchor rod
CN105040695A (en) * 2015-07-17 2015-11-11 中国建筑第六工程局有限公司 Anchor rod structure capable of integrally working and construction method
CN207160002U (en) * 2017-08-25 2018-03-30 中铁建设集团有限公司 A kind of anchor pole equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07259074A (en) * 1994-03-24 1995-10-09 Soil Kogyo Kk Ground improving method
CN201649099U (en) * 2010-03-18 2010-11-24 苏州凯贸铸造工业有限公司 Grout injector metal casting
CN102587366A (en) * 2012-03-13 2012-07-18 胜利油田胜利工程建设(集团)有限责任公司 Self-drilling type spiral anchor rod and construction process using self-drilling type spiral anchor rod for grouting along with drilling, stirring and curing
CN202768031U (en) * 2012-08-16 2013-03-06 朱大刚 Hollow grouting anchor rod
CN105040695A (en) * 2015-07-17 2015-11-11 中国建筑第六工程局有限公司 Anchor rod structure capable of integrally working and construction method
CN207160002U (en) * 2017-08-25 2018-03-30 中铁建设集团有限公司 A kind of anchor pole equipment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
顾志刚等: "《混凝土面板堆石坝施工技术》", 辽宁科学技术出版社, pages: 280 - 282 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110106864A (en) * 2019-04-25 2019-08-09 上海大学 A kind of quick processing system of soft soil foundation
CN113431076A (en) * 2021-06-24 2021-09-24 三峡大学 Self-drilling type pre-stressed anchor rod reinforcing device and method for power transmission line water flooded tower foundation
CN114837607A (en) * 2022-04-27 2022-08-02 中煤科工开采研究院有限公司 Grouting reinforcement construction process
CN114837607B (en) * 2022-04-27 2024-04-05 中煤科工开采研究院有限公司 Grouting reinforcement construction process

Similar Documents

Publication Publication Date Title
CN104747075B (en) Anti-collapsing drilling method for grout spraying of soft coal seam
CN102691296B (en) Pipe pile foundation for static-pressure grouting on pile side and rotary jet grouting at pile bottom and construction method thereof
CN100582380C (en) Cloth bag grouting pile-forming method
CN101748728B (en) Soil cement expanding uplift pile
CN104790873B (en) Soft rock layer jet is oriented to the integrated drilling method of the anti-collapse hole of pore-forming reaming
CN101338563B (en) Sleeve grouting method and grouting device thereof
CN102444118A (en) Construction method for grouting reinforcement of sleeve valve pipe
CN105604001B (en) Drilling tool is stirred in the stake of stiff-core cement soil cylinder and the rotation of construction method and tubular
CN105951749B (en) The construction method of the steel pipe pile reinforced processing of soft damage in a kind of restricted clearance
CN106320354A (en) Anti-seepage construction method for karst cave development stratum under overburden
CN207878460U (en) A kind of high-pressure rotary-spray reamed end anchor pole
CN107747312A (en) A kind of method of sand and gravel stratum well cementing construction
CN107447755A (en) A kind of anchor pole equipment and armature boring construction method
CN108166513A (en) Anchor hole and the pore-forming technique in the dual-purpose hole of osculum in a kind of dregs side slope
CN110185413A (en) A method of stable slip casting channel is formed on easy collapse hole stratum
CN101225740A (en) Annular filling method for space between freezing pipe and surrounding rock
CN103061341A (en) Middle-excavating pile-sinking construction method
CN107313788B (en) The method and device of grouting for water blocking under strong hydraulic connection
CN101100858A (en) Construction method for drilling tool center pumping concrete post mudjack concrete pouring pile and construction device thereof
CN109322624B (en) Anchoring hole bottom reaming device
CN201183950Y (en) Self-propelling type anchor rod of seamless steel pipe
CN103306280B (en) A kind of drill pipe bore implants stirring-type anchoring pile and anchoring process
CN101736745A (en) Process for reinforcing double high pressure triple pipe
CN201245826Y (en) Grouting apparatus for casing tube grouting method
CN209385062U (en) A kind of anchor hole bottom hole Counterboring apparatus

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20171208