CN209212270U - Steel pipe draining lock foot stake - Google Patents
Steel pipe draining lock foot stake Download PDFInfo
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- CN209212270U CN209212270U CN201821816030.XU CN201821816030U CN209212270U CN 209212270 U CN209212270 U CN 209212270U CN 201821816030 U CN201821816030 U CN 201821816030U CN 209212270 U CN209212270 U CN 209212270U
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- draining
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 216
- 239000010959 steel Substances 0.000 title claims abstract description 216
- 238000004873 anchoring Methods 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 238000005553 drilling Methods 0.000 claims description 12
- 238000007569 slipcasting Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 239000003351 stiffener Substances 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 229920002472 Starch Polymers 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 abstract description 11
- 238000003325 tomography Methods 0.000 abstract description 7
- 239000011435 rock Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 13
- 238000010276 construction Methods 0.000 description 10
- 238000009412 basement excavation Methods 0.000 description 8
- 238000003466 welding Methods 0.000 description 6
- 239000002002 slurry Substances 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 241001061264 Astragalus Species 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000013632 homeostatic process Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model provides a kind of steel pipe draining lock foot stake herein；The steel pipe draining lock foot stake is connected and fixed between steel arch-shelf, it is characterized by: steel pipe draining lock foot stake is by locating piece, anchor steel pipe, drain steel pipe, Grouting Pipe, stringing ring, interior bulkhead, covering head plate sum aggregate water hole etc. is constituted, stringing ring is located in anchoring steel pipe, anchoring steel pipe is fixed on steel arch-shelf by locating piece, draining steel pipe and Grouting Pipe are embedded in anchoring steel pipe by stringing ring, it drains steel pipe and runs through interior bulkhead, covering head plate is simultaneously fixed to each other, Grouting Pipe is pierced by covering head plate and fixed thereto, anchor the external gully-hole of steel pipe, interior bulkhead is located in anchoring steel pipe and is sealed by O-shaped sealing collar.This patent has both tunnel steel arch frame lock foot and drain function, suitable for carrying out reinforcing and drainage and step-down to the tunnel arch wall preliminary bracing for passing through tomography rich water crushed zone badness geology section.
Description
Technical field
The utility model relates to a kind of lock feet for carrying out Tunnel in tomography rich water crushed zone to reinforce and ejectment water
Device is specifically a kind of steel pipe draining lock foot stake.
Background technique
Currently, China's overwhelming majority mountain tunnel is constructed using New Austrian Tunneling Method.New Austrian Tunneling Method is with anchor pole, gunite concrete and steel arch
Frame constitutes tunnel arch wall preliminary bracing system, excavates driving using cyclic advance mode.
In Mountain Tunnels work progress, it is frequently encountered and passes through the unfavorable geologies such as karst region, fault belt, when these
When harm geological structure water storage itself is enriched, it will bring bigger difficulty of construction to tunnel excavation and supporting.Under normal circumstances,
When passing through fault belt badness geology section, after laying long pipe shed advance support, piecewise front pre-grouting paragraph by paragraph can be taken
The modes such as excavation are punished, and to improve excavation supporting environment, but advanced long pipe shed is mainly used for the punishment of tunnel arch, advanced pre-
Though slip casting can tend not to be used to full section of tunnel grouting and reinforcing because grouting amount is big, at high cost.Therefore, in tunnel
In road digging process, when encountering abutment wall position rock crusher and easily collapsing, needs using grouting and reinforcing, improves supporting parameter and enhancing
The measure methods such as steel arch frame lock foot, when tomography rich water Area cracked reinforces abutment wall, it is also necessary to tapping pipe be set and implemented purposefully
Ground dispersion draining, alleviates country rock rich water pressure, reduces safety for tunnel engineering risk.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of steel pipe draining lock foot stake herein；This
Method has both tunnel steel arch frame lock foot and drain function, suitable for the tunnel for passing through tomography rich water crushed zone badness geology section
Arch wall preliminary bracing carries out reinforcing and drainage and step-down.
The utility model is realized in this way a kind of steel pipe draining lock foot stake is constructed, the steel pipe draining lock same steel arch-shelf of foot stake
Between be connected and fixed, it is characterised in that: steel pipe draining lock foot stake by locating piece, anchoring steel pipe, draining steel pipe, Grouting Pipe, stringing
Ring, interior bulkhead, covering head plate sum aggregate water hole etc. are constituted, and stringing ring is located in anchoring steel pipe, and anchoring steel pipe is solid by locating piece
Be scheduled on steel arch-shelf, drain steel pipe and Grouting Pipe and be embedded in anchoring steel pipe by stringing ring, draining steel pipe run through interior bulkhead,
Covering head plate is simultaneously fixed to each other, and Grouting Pipe is pierced by covering head plate and fixed thereto, the anchoring external gully-hole of steel pipe, interior bulkhead position
It is sealed in anchoring steel pipe and by O-shaped sealing collar.
Lock foot stake is drained according to steel pipe described in the utility model, it is characterised in that: wherein locating piece is in groove profile, and bottom plate is in square
Shape, the steel plate using thickness not less than 12mm make, and anchoring steel pipe hole is set in plate, and aperture preferably greater than anchors outer diameter of steel pipes 5mm；
Locating piece has both I type locating piece and II type locating piece, and I type locating piece side plate is trapezoidal, II type locating piece side
Plate is in rectangle, and the steel plate for being all made of 8mm thickness vertical is welded in bottom plate edge；
Wherein anchoring steel pipe is made of seamless steel pipe, and length of steel pipe is not preferably less than 4.0m, and caliber is not preferably less than φ
108mm is not provided with eyelet within the scope of the nozzle 50cm of both ends, remaining pipeline section is by pitch-row 150mm and aperture φ 16mm in Guan Si
Week bores injected hole and forms steel floral tube；
Wherein coating steel pipe or seamless steel pipe production can be used in draining steel pipe,
Grouting Pipe uses φ 20mm conduit peschel, and anchoring pipe diameter preferably exceeds draining the sum of steel pipe and the outer diameter of Grouting Pipe
15mm or more；
Wherein the production of 8# iron wire, its spacing 1.0m~1.5m, for draining steel pipe and Grouting Pipe in anchor can be used in stringing ring
Gu the positioning in steel pipe；
Wherein interior bulkhead is fabricated to circle with steel plate, and steel plate diameter is less than anchoring steel pipe 2mm, and thickness is not preferably less than
6.0mm sets drainpipe through hole in plate, and the O-shaped sealing collar of groove installation rubber or silica gel material, sealing collar are set in the middle part of plate outer rim
Line footpath 5.0mm；
Wherein circular slab or square plate can be used in covering head plate, and plate thickness is not preferably less than 3mm, sets drain tube holes and slip casting in plate
The gas vent that pore and diameter are 15mm, edges of boards edge is preferably wide to be gone out to anchor steel pipe outer rim 20mm；
Wherein gully-hole is formed using drilling, and the hole length that catchments preferably gos deep into rich water crushed zone and is no less than 4.0m.
Lock foot stake is drained according to steel pipe described in the utility model, it is characterised in that: upper mo(u)ld bottom half is provided on the inside of steel arch-shelf
Steel stringer, stiffener and billet, wherein section longitudinal beam preferably uses I-steel, and specification is no less than 16#；Stiffener uses steel
Plate production, steel plate thickness are not preferably less than 10mm；Billet is using the sheet pack spell shape of different-thickness at being mainly used for padding fashioned iron
Gap between stringer and anchoring steel pipe.The lock foot stake of steel pipe draining at this time connects the steel arch in range by section longitudinal beam
Frame, steel pipe draining lock foot stake etc. are concatenated into a rigidity entirety, are suitable for easily collapsing to rock crusher, the insufficient tunnel of self-stable ability
The lock foot of road arch wall preliminary bracing anchors.
The utility model has the advantages that the utility model provides a kind of steel pipe draining lock foot stake and construction party herein
Method；This method has both tunnel steel arch frame lock foot and drain function, suitable for passing through tomography rich water crushed zone badness geology section
Tunnel arch wall preliminary bracing carry out reinforce and drainage and step-down.Utility model device has following good result, rich water after implementing
Foot stake is locked in the steel pipe draining of setting when crushed zone carries out tunnel arch wall construction, with large diameter steel pipe instead of common reinforcing bar anchor
Bar and slip casting ductule lock foot, and intensity is higher, more rigid, consolidate peripheral rock and locking pile body by slip casting method, improve
Bearing capacity of the lock foot to top country rock and preliminary bracing.The drainage pipeline being arranged in stake has discharge crevice water, alleviates
The function of country rock rich water pressure.In Tunnel Passing rich water fault belt badness geology section, lock foot stake is drained using steel pipe
The function of reinforcing arch wall preliminary bracing and drainage and step-down simultaneously may be implemented, reduce the safety wind of rich water crushed zone constructing tunnel
Danger.
Detailed description of the invention
Fig. 1 is steel pipe draining lock foot pilework elevation
Fig. 2 is common shape steel tube draining lock foot stake drawing；
Fig. 3 is enlarged diagram at A1 in Fig. 2；
Fig. 4 is enlarged diagram at A2 in Fig. 2；
Fig. 5 is I-I the schematic diagram of the section structure in Fig. 3 (anchor tube pastes steel arch-shelf arrangement)；
Fig. 6 is I-I the schematic diagram of the section structure in Fig. 3 (anchor tube is centrally arranged between steel arch-shelf)；
Fig. 7 is reinforced steel pipe draining lock foot stake drawing；
Fig. 8 is enlarged diagram at B1 in Fig. 7；
Fig. 9 is II-II the schematic diagram of the section structure in Fig. 8 (anchor tube pastes steel arch-shelf arrangement)；
Figure 10 is II-II the schematic diagram of the section structure in Fig. 9 (anchor tube is centrally arranged between steel arch-shelf)；
Figure 11 is I type locating piece schematic view of facade structure；
Figure 12 is I type locating piece side schematic view；
Figure 13 is I type locating piece planar structure schematic diagram；
Figure 14 is II type locating piece schematic view of facade structure；
Figure 15 is II type locating piece side schematic view；
Figure 16 is II type locating piece planar structure schematic diagram；
Figure 17 is anchoring steel pipe injected hole layout drawing；
Figure 18 is stringing ring schematic view of facade structure；
Figure 19 is stringing ring side schematic view；
Figure 20 is interior stopper structure schematic diagram；
Figure 21 is interior plug side schematic view；
Figure 22 is outside head plate structural schematic diagram；
Figure 23 is O-shaped sealing collar schematic diagram；
Figure 24 is O-shaped sealing collar side view；
Figure 25 is III-III the schematic diagram of the section structure in Fig. 4.
Wherein: locating piece 1, I type locating piece 1A, II type locating piece 1B anchor steel pipe hole 1C, anchor steel pipe 2, injected hole
2A drains steel pipe 3, Grouting Pipe 4, stringing ring 5, interior bulkhead 6, drainpipe through hole 6A, covering head plate 7, drain tube holes 7A, note
Starch pore 7B, gas vent 7C, gully-hole 8, upper section longitudinal beam 9, lower section longitudinal beam 10, stiffener 11, steel arch-shelf 12, O-shaped sealing
Circle 13, arch connector 14, billet 15.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing 1- Figure 25, to the skill in the utility model embodiment
Art scheme is clearly and completely described, it is clear that and the described embodiments are only a part of the embodiments of the utility model, and
The embodiment being not all of.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creativeness
Every other embodiment obtained, fall within the protection scope of the utility model under the premise of labour.
The purpose of the utility model is to overcome the deficiencies in the prior art, provide steel pipe draining lock foot stake and its construction herein
Method；This method has both tunnel steel arch frame lock foot and drain function, suitable for passing through tomography rich water crushed zone badness geology
The tunnel arch wall preliminary bracing of section carries out reinforcing and drainage and step-down.
As shown, steel pipe draining lock foot stake described in the utility model is connected and fixed between steel arch-shelf 12, steel pipe draining
Lock foot stake is by locating piece 1, anchoring steel pipe 2, draining steel pipe 3, Grouting Pipe 4, stringing ring 5, interior bulkhead 6, covering head plate 7 and catchments
Holes 8 etc. are constituted, and stringing ring 5 is located in anchoring steel pipe 2, and anchoring steel pipe 2 is fixed on steel arch-shelf 12 by locating piece 1, drain steel
Pipe 3 and Grouting Pipe 4 are embedded in anchoring steel pipe 2 by stringing ring 5, and draining steel pipe 3 is through interior bulkhead 6, covering head plate 7 and phase
Mutually fixed, Grouting Pipe 4 is pierced by covering head plate 7 and fixed thereto, the anchoring external gully-hole 8 of steel pipe 2, and interior bulkhead 6, which is located at, to be anchored
It is sealed in steel pipe 2 and by O-shaped sealing collar 13.
It is drained in lock foot stake in steel pipe described in the utility model, wherein locating piece 1 is in groove profile, and bottom plate is in rectangle, using thickness
Steel plate of the degree not less than 12mm makes, and anchoring steel pipe hole 1C is set in plate, and aperture preferably greater than anchors outer diameter of steel pipes 5mm；Locating piece 1 has
There are both I type locating piece 1A and II type locating piece 1B, I type locating piece side plate is trapezoidal, and II type locating piece side plate is in rectangle, adopts
Bottom plate edge is welded in the steel plate of 8mm thickness is vertical.
Wherein anchoring steel pipe 2 is made of seamless steel pipe, and length of steel pipe is not preferably less than 4.0m, and caliber is not preferably less than φ
108mm is not provided with eyelet within the scope of the nozzle 50cm of both ends, remaining pipeline section is by pitch-row 150mm and aperture φ 16mm in Guan Si
Week bores injected hole 2A and forms steel floral tube；
Wherein coating steel pipe or seamless steel pipe production can be used in draining steel pipe 3,
Grouting Pipe 4 uses φ 20mm conduit peschel, and anchoring pipe diameter preferably exceeds draining the sum of steel pipe and the outer diameter of Grouting Pipe
15mm or more；
Wherein the production of 8# iron wire, its spacing 1.0m~1.5m, for draining steel pipe and Grouting Pipe in anchor can be used in stringing ring 5
Gu the positioning in steel pipe；
Wherein interior bulkhead 6 is fabricated to circle with steel plate, and steel plate diameter is less than anchoring steel pipe 2mm, and thickness is not preferably less than
6.0mm sets drainpipe through hole 6A in plate, and the O-shaped sealing collar of groove installation rubber or silica gel material, sealing are set in the middle part of plate outer rim
Astragal diameter 5.0mm；
Wherein covering head plate 7 can be used circular slab or square plate, and plate thickness is not preferably less than 3mm, set in plate drain tube holes 7A and
The gas vent 7C that slip casting pore 7B and diameter are 15mm, edges of boards edge is preferably wide to be gone out to anchor steel pipe outer rim 20mm；
Wherein gully-hole 8 is formed using drilling, and the hole length that catchments preferably gos deep into rich water crushed zone and is no less than 4.0m.
The utility model is realized in this way constructing a kind of steel pipe draining lock foot stake and its construction method, which is characterized in that
Implement as follows:
(1) steel pipe draining lock foot stake type selecting: when passing through tomography rich water crushed zone, reconnaissance digging spy is aided with by tunnel excavation and is taken off
Dew and judge arch wall and wall rock condition below, selectes steel pipe draining and locks foot stake type.Steel pipe draining lock foot stake can be according to tunnel
Plain edition and the two types such as reinforced is respectively adopted in road country rock homeostasis condition；
1) common shape steel tube draining lock foot stake: by locating piece, anchoring steel pipe and embedded draining steel pipe, Grouting Pipe, stringing
Ring, interior bulkhead, covering head plate sum aggregate water hole etc. are constituted, and wherein locating piece is in groove profile, and bottom plate is in rectangle, are not less than using thickness
The steel plate of 12mm makes, and circular hole is set in plate, and aperture preferably greater than anchors outer diameter of steel pipes 5mm；I type locating piece side plate is trapezoidal, II type
Locating piece side plate is in rectangle, and the steel plate for being all made of 8mm thickness vertical is welded in bottom plate edge；Wherein anchoring steel pipe uses seamless steel
Pipe production, length of steel pipe are not preferably less than 4.0m, and caliber is not preferably less than φ 108mm, is not provided within the scope of the nozzle 50cm of both ends
Eyelet, remaining pipeline section drill to form steel floral tube by pitch-row 150mm and aperture 16mm in pipe surrounding；Wherein plating can be used in draining steel pipe
Zinc steel pipe or seamless steel pipe production, Grouting Pipe use φ 20mm conduit peschel, and anchoring pipe diameter preferably exceeds draining steel pipe and slip casting
The sum of the outer diameter of pipe 15mm or more；Wherein the production of 8# iron wire, its spacing 1.0m~1.5m, for draining steel pipe can be used in stringing ring
With positioning of the Grouting Pipe in anchoring steel pipe；Wherein interior bulkhead is fabricated to circle with steel plate, and steel plate diameter is less than anchoring steel pipe
2mm, thickness are not preferably less than 6.0mm, and drainpipe through hole is set in plate, and groove installation rubber or silica gel material are set in the middle part of plate outer rim
O-shaped sealing collar, sealing collar line footpath 5.0mm；Wherein circular slab or square plate can be used in covering head plate, and plate thickness is not preferably less than 3mm, plate
Set the through hole and diameter of draining steel pipe and Grouting Pipe inside as the gas vent of 15mm, edges of boards edge is preferably wide to be gone out to anchor steel pipe outer rim
20mm；Wherein gully-hole is formed using drilling, and the hole length that catchments preferably gos deep into rich water crushed zone and is no less than 4.0m.Common shape steel tube row
Water lock foot stake is connected and fixed between steel arch-shelf, suitable for having the tunnel arch wall preliminary bracing of certain self-stable ability to country rock
Lock foot anchoring.
2) the foot stake of reinforced steel pipe draining lock is provided with upper mo(u)ld bottom half in addition to medium-sized structure on the inside of steel arch-shelf
Steel stringer, stiffener and billet, wherein section longitudinal beam preferably uses I-steel, and specification is no less than 16#；Stiffener uses steel
Plate production, steel plate thickness are not preferably less than 10mm；Billet is using the sheet pack spell shape of different-thickness at being mainly used for padding fashioned iron
Gap between stringer and anchoring steel pipe.Reinforced steel pipe draining lock foot stake connects the steel arch in range by section longitudinal beam
Frame, steel pipe draining lock foot stake etc. are concatenated into a rigidity entirety, are suitable for easily collapsing to rock crusher, the insufficient tunnel of self-stable ability
The lock foot of road arch wall preliminary bracing anchors.During benching tunnelling method tunneling, after the preliminary bracing for completing upper level step, open
The country rock that arch wall is carried on the back when digging down level-one step, which occurs to loosen, to collapse, and will likely result in established preliminary bracing above excavation section and loses
It is steady to destroy, after using reinforced steel pipe draining lock foot stake that top preliminary bracing connection is integral, when excavating next step again
It is aided with short drilling depth excavation supporting engineering method, can effectively avoids this unstable failure, reduces construction safety risk.
(2) boring work face is disposed: answering exposed country rock at drilling hole location, preferably after arch is set up and injection preliminary bracing is mixed
Work pit-hole is reserved before solidifying soil, size, which is subject to, is able to satisfy locating piece installation and normal drill construction.It, can employment when not reserved
The mode of jetting cement and reinforcing bar within the scope of work forcible entry working face forms work pit-hole.
(3) stake position setting-out: lock foot stake holes position is determined on arch wall back country rock surface with measuring tools such as tape measure and bracing wires, is used in combination
Iron nail or red paint etc. obviously identify.
(4) install locating piece: locating piece is installed on steel arch-shelf, for convenient for correction, first by locating piece bottom plate and steel arch-shelf
Spot welding connection, then side plate and bottom plate, steel arch-shelf are respectively welded, finally locating piece is expired and is welded on steel arch-shelf, work progress
In prevent its deformation displacement, plate plane with lock foot stake design axis it is vertical.Locating piece occupies the reinforcing bar position in existing preliminary bracing
When setting, reinforcing bar and locating piece are welded and fixed.
(5) it drills: the drilling such as anchoring drilling machine, down-the-hole drill can be used, fixed drilling machine is accurately installed according to hole location, and stringent
Conscientiously carry out seat in the plane adjustment, it is ensured that borehole accuracy: inclination angle allowable error position ± 1.0 °, orientation allowable error ± 1.0 °.
The anchoring steel pipe hole be inserted in locating piece of steel pipe will be anchored and push against country rock, be drilled into bottom hole with pipe with eccentric drilling device,
Anchoring steel pipe is exited to anchorage point is designed with drilling machine again, forms gully-hole.
(6) slip casting and drainage arrangement are installed:
1) welding draining steel pipe and interior bulkhead, steel pipe water inlet are pierced by interior bulkhead about 0.2m, pipe axis and interior plug
Plate plate face keeps vertical.
2) stringing ring is made, and by itself and Grouting Pipe, draining steel pipe tied silk binding and fixing, the grout outlet distance of Grouting Pipe
Interior 0.2~0.3m of bulkhead.
3) O shape sealing collar is nested at interior bulkhead peripheral groove, to prevent sealing collar from falling off, waterproof gluing can be used
Patch is fixed, and is then slowly sent into above-mentioned apparatus in anchoring steel pipe.
4) covering head plate is installed, and is fully welded connect respectively with anchoring steel pipe, drainpipe.
(7) welding lock foot stake: forming entirety for the positioning block welding anchored on steel pipe and arch, can be thick with 8mm when needing
Trapezoidal stiffener will press vertical "-" type or vertical, laterally cross welding reinforcement between outer wall of steel pipe and locating piece.
(8) it fills up work pit-hole: adding appropriate accelerator with concrete and fill and lead up work pit-hole, when construction avoids concrete stifled
Fill in nozzle.
(9) anchoring section slip casting:
1) Grouting Pipe, grouting stop-valve and pneumatic mortar machine are connected.
2) neat slurry or cement+waterglass dual slurry slip casting are selected according to country rock hydrogeologic condition, slip casting uses hole
The mode of slurry is returned at bottom, and initial grouting pressure is preferably controlled in 0.5~1.0Mpa, until vent ports overflow fresh slurry when stopper or
Plug blocks exhaust outlet, and final pressure is preferably controlled in 2.0Mpa, and closes grouting stop-valve after holding pressure 5min.
(10) lower section longitudinal beam, section longitudinal beam and anchoring successively reinforced steel pipe draining lock foot stake stringer installation: are installed
At gap between steel pipe with billet padding and weld it is integral, between section longitudinal beam and steel arch-shelf weld after again with steel of putting more energy into
Plate welding is reinforced.
(11) next stage bench excavation method after work: after steel pipe draining lock foot stake is completed in construction, next stage abutment wall portion is excavated
When position, using short drilling depth excavation method and it should take measures to weaken the country rock disturbance at abutment wall, it is primary to excavate no more than 3 Pin
Arch width, and abutment wall preliminary bracing is applied in time after excavating, make full use of lock foot stake and the abutment wall supporting newly done to improve tunnel
The stability of preliminary bracing system.
The utility model, which has the advantages that after utility model device is implemented, following good result, rich water crushed zone
The steel pipe draining lock foot stake for carrying out setting when tunnel arch wall construction, with large diameter steel pipe instead of common reinforced anchor bolt and note
It starches ductule and locks foot, intensity is higher, more rigid, consolidates peripheral rock and locking pile body by slip casting method, improves lock foot
To the bearing capacity of top country rock and preliminary bracing.The drainage pipeline being arranged in stake has discharge crevice water, it is rich to alleviate country rock
The function of water pressure.In Tunnel Passing rich water fault belt badness geology section, draining lock foot stake using steel pipe can be real
The function of now reinforcing arch wall preliminary bracing and drainage and step-down simultaneously, reduces the security risk of rich water crushed zone constructing tunnel.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (3)
1. a kind of steel pipe draining lock foot stake, steel pipe draining is locked to be connected and fixed between the same steel arch-shelf of foot stake (12), it is characterised in that: steel
Pipe draining lock foot stake is by locating piece (1), anchoring steel pipe (2), draining steel pipe (3), Grouting Pipe (4), stringing ring (5), interior bulkhead
(6), covering head plate (7) and gully-hole (8) are constituted, and stringing ring (5) is located in anchoring steel pipe (2), and anchoring steel pipe (2) passes through positioning
Block (1) is fixed on steel arch-shelf (12), is drained steel pipe (3) and Grouting Pipe (4) by stringing ring (5) and is embedded in anchoring steel pipe (2)
Interior, draining steel pipe (3) is through interior bulkhead (6), covering head plate (7) and is fixed to each other, and Grouting Pipe (4) is pierced by covering head plate (7)
And it is fixed thereto, steel pipe (2) external gully-hole (8) is anchored, interior bulkhead (6) is located in anchoring steel pipe (2) and passes through O-shaped sealing
Enclose (13) sealing.
2. steel pipe draining lock foot stake according to claim 1, it is characterised in that: wherein locating piece (1) is in groove profile, and bottom plate is in square
Shape, the steel plate using thickness not less than 12mm make, and anchoring steel pipe hole (1C) is set in plate, and aperture preferably greater than anchors outer diameter of steel pipes
5mm；
Locating piece (1) has both I type locating piece (1A) and II type locating piece (1B), and I type locating piece side plate is trapezoidal, and II type is fixed
Position block side plate is in rectangle, and the steel plate for being all made of 8mm thickness vertical is welded in bottom plate edge；
Wherein anchoring steel pipe (2) is made of seamless steel pipe, and length of steel pipe is not preferably less than 4.0m, and caliber is not preferably less than φ 108mm,
It is not provided with eyelet within the scope of the nozzle 50cm of both ends, remaining pipeline section is bored in pipe surrounding by pitch-row 150mm and aperture φ 16mm and infused
It starches hole (2A) and forms steel floral tube；
Wherein coating steel pipe or seamless steel pipe production can be used in draining steel pipe (3),
Grouting Pipe (4) uses φ 20mm conduit peschel, and anchoring pipe diameter preferably exceeds draining the sum of steel pipe and the outer diameter of Grouting Pipe
15mm or more；
Wherein the production of 8# iron wire can be used in stringing ring (5), and its spacing 1.0m~1.5m is being anchored for draining steel pipe and Grouting Pipe
Positioning in steel pipe；
Wherein interior bulkhead (6) is fabricated to circle with steel plate, and steel plate diameter is less than anchoring steel pipe 2mm, and thickness is not preferably less than
6.0mm is set drainpipe through hole (6A) in plate, the O-shaped sealing collar of groove installation rubber or silica gel material is set in the middle part of plate outer rim, only
Hydrosphere line footpath 5.0mm；
Wherein covering head plate (7) can be used circular slab or square plate, and plate thickness is not preferably less than 3mm, set in plate drain tube holes (7A) and
The gas vent (7C) that slip casting pore (7B) and diameter are 15mm, edges of boards edge is preferably wide to be gone out to anchor steel pipe outer rim 20mm；
Wherein gully-hole (8) is formed using drilling, and the hole length that catchments preferably gos deep into rich water crushed zone and is no less than 4.0m.
3. steel pipe draining lock foot stake according to claim 1, it is characterised in that: be provided with upper mo(u)ld bottom half on the inside of steel arch-shelf (12)
Steel stringer (9,10), stiffener (11) and billet (15), wherein section longitudinal beam preferably uses I-steel, and specification is no less than
16#；Stiffener (11) is made of steel plate, and steel plate thickness is not preferably less than 10mm；Billet is spelled using the sheet pack of different-thickness
It is formed, be mainly used for padding section longitudinal beam and anchor the gap between steel pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821816030.XU CN209212270U (en) | 2018-11-06 | 2018-11-06 | Steel pipe draining lock foot stake |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821816030.XU CN209212270U (en) | 2018-11-06 | 2018-11-06 | Steel pipe draining lock foot stake |
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| CN209212270U true CN209212270U (en) | 2019-08-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578035A (en) * | 2018-11-06 | 2019-04-05 | 四川路航建设工程有限责任公司 | Steel pipe draining lock foot stake and construction method |
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2018
- 2018-11-06 CN CN201821816030.XU patent/CN209212270U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578035A (en) * | 2018-11-06 | 2019-04-05 | 四川路航建设工程有限责任公司 | Steel pipe draining lock foot stake and construction method |
| CN109578035B (en) * | 2018-11-06 | 2024-04-30 | 四川路航建设工程有限责任公司 | Steel pipe drainage lock foot pile and construction method |
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