CN102392653A - Bent pipe one-sided freezing method for shield docking of stratum and freezing pipe driving device - Google Patents
Bent pipe one-sided freezing method for shield docking of stratum and freezing pipe driving device Download PDFInfo
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- CN102392653A CN102392653A CN2011103218194A CN201110321819A CN102392653A CN 102392653 A CN102392653 A CN 102392653A CN 2011103218194 A CN2011103218194 A CN 2011103218194A CN 201110321819 A CN201110321819 A CN 201110321819A CN 102392653 A CN102392653 A CN 102392653A
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a bent pipe one-sided freezing method for the shield docking of stratum and a freezing pipe driving device. The freezing method adopts a bent freezing pipe to realize that a freezing system is only needed to be mounted on a tunnel on one side, and is particularly suitable for the situation that freezing construction operation is not available on the tunnel on the other side. The method comprises the steps as follows: the bent freezing pipe is driven out from the docked shield on one side, and the end part of the freezing pipe is ensured to approach the casing of the shield on the opposite side; through one-sided tunnel refrigeration freezing, a frozen soil purdah with absolute water sealing property and sound intensity is formed to encircle the shield docking part; and the shield docking operation is completed under the protection of the frozen soil purdah. The freezing pipe is driven through drilling holes on the casings of the shields through a drill rod and driving the bent freezing pipe through tamping. The freezing pipe driving device adopts the structure that an opening pipe is arranged on the casing of a shield machine and is connected with a straight sealing pipe or a curved sealing pipe through a spherical valve, to realize water sealing and blowout prevention functions, wherein the straight sealing pipe is selected for the hole drilling of the drill rod, and the curved sealing pipe is selected for driving the bent freezing pipe.
Description
Technical field
The invention belongs to the construction of tunnel field, relate to the freezing process of shield structure, relate to also that employed freezing hole sets device in this freezing process ground plane.
Background technology
Freezing process has excellent application value in shield structure butt joint engineering, its water shutoff property with safeguard that the intensity on stratum and stability are that other worker's methods are incomparable.
Freezing process in the butt joint of shield structure is frigo to be installed carry out freezing in a side or bilateral shield structure; Make the peripheral soil body in shield structure Butt Section freeze the frozen soil curtain that forms the sealing, higher-strength is arranged; Stop underground water to get into mating operation face, opposing external water soil pressure, provide existing intensity that the temporary lining of water shutoff property is arranged again for shield structure mating operation.The general mounting method of frigo is a side or the perforate of bilateral shield structure from butt joint is laid with certain inclination angle in the stratum a radial linear pattern freezing pipe, lays at the shield machine inner surface sometimes and attaches freezing pipe to strengthen freezing efficiency.The installation of frigo generally begins after butt joint shield structure arrives docking location and operating condition is provided.
The layout of freezing pipes mode of the shield structure butt joint freezing process stratum consolidation of often taking at present has following several kinds:
Setting radial linear pattern freezing pipe from one-sided shield structure combines an other side shield structure inner surface to attach freezing pipe.After both sides shield structure advances the arrival docking location, get single radial linear pattern freezing pipe from a side shield structure, get to the peripheral certain position of offside shield structure, and attach freezing pipe along circumference at offside shield structure inner surface.Attach freezing pipe and be used to overcome the radial freezing pipe deficiency far away apart from the shield structure, two kinds of freezing pipes combine can guarantee to form frozen soil curtain continuous, sealing.Under this mode, in the tunnel, both sides, refrigeration station is set respectively.
Both sides shield structure sets single radial linear pattern freezing pipe frozen ground respectively and carries out the butt joint of shield structure.This kind worker method need be constructed respectively by the shield structure from both sides, still is that water shutoff property all is guaranteed easily from intensity.Under this mode, be in the tunnel, both sides, refrigeration station to be set equally.
Both sides shield structure sets double radial linear pattern freezing pipe respectively and freezes to carry out the butt joint of shield structure.This kind worker method sets single row of tubes respectively with both sides and compares, and the thickness of frozen soil curtain and intensity all have higher assurance, compares with single freezing pipe scheme, is suitable for big buried depth, high pressure situation.
Dock actual engineering from present both at home and abroad shield structure, under different condition, more than several kinds of worker's methods application is in various degree all arranged, but some is not enough below also existing:
The first, when can't getting into a side shield structure or not possess freezing pipe, personnel for a certain reason execute when making condition, and frozen construction can only carry out from an other side shield structure, and this moment, above several method all can't be implemented.
The second, more than several kinds to freeze worker's method work progress all more loaded down with trivial details, all need punch, attach the freezing pipe operation by the shield structure, and two refrigeration stations are set in both sides, need to drop into lot of manpower and material resources.
Summary of the invention
The object of the present invention is to provide a kind of shield structure that one-sided freezing process of ground plane bend pipe and freezing pipe thereof are set device, it adopts crooked freezing pipe, makes the freeze all construction operation fully only in one-sided shield structure, carry out.
For reaching above purpose, the solution that the present invention adopted is:
A kind of shield structure is to the one-sided freezing process of ground plane bend pipe, and it may further comprise the steps:
1) on the shield machine housing, installs orifice tube; Orifice tube is provided with ball valve away from shield machine housing one end; The ball valve other end is provided with the linear sealed tube, opens ball valve, and the drilling rod that preferred dimension is fit to passes linear sealed tube, ball valve and orifice tube successively; And bore and pass through the shield machine housing, withdraw from drilling rod and close ball valve;
2) the linear sealed tube is replaced by the shaped form sealed tube; Be connected with the freezing pipe insertion shaped form sealed tube of bending and with tamping tube hammer; Adjustment freezing pipe and tamping tube hammer orientation; Make freezing pipe and tamping tube hammer on default freezing pipe axis, open ball valve, begin to ram pipe and make freezing pipe get into orifice tube, shield structure body;
3) ram freezing pipe piecemeal, and weld follow-up freezing pipe pipeline section, arrive at opposite side shield structure body shell place until the freezing pipe end.
Further, the length of said shaped form sealed tube is greater than the linear sealed tube, and its curvature is identical with the curvature of freezing pipe.
Put more energy into floor and welding of orifice tube pallet and permanent position are set around the said orifice tube, and the orifice tube pallet is fixed on the shield machine housing.
One end of said shaped form sealed tube and steady rest is affixed, and the other end of steady rest is fixed on the shield machine housing through the sealed tube pallet; The floor of putting more energy into is welded in the junction of sealed tube pallet and shield machine housing.
Also be provided with bypass pipe on the said orifice tube.
Employed freezing pipe sets device in a kind of said method, comprises orifice tube, ball valve, sealed tube, drilling rod and freezing pipe, and orifice tube one end is fixed on the shield machine housing, and the other end is connected with ball valve one end, and the ball valve other end links to each other with sealed tube one end; Sealed tube comprises linear sealed tube and shaped form sealed tube; When drilling rod is holed to the shield machine housing through sealed tube, ball valve and orifice tube; Sealed tube is selected the linear sealed tube for use, and when freezing pipe passed the shield machine housing through sealed tube, ball valve and orifice tube, sealed tube was selected the shaped form sealed tube for use.
Further, the length of said shaped form sealed tube is greater than the linear sealed tube, and its curvature is identical with the curvature of freezing pipe.
Put more energy into floor and welding of orifice tube pallet and permanent position are set around the said orifice tube, and the orifice tube pallet is fixed on the shield machine housing.
One end of said shaped form sealed tube and steady rest is affixed, and the other end of steady rest is fixed on the shield machine housing through the sealed tube pallet; The floor of putting more energy into is welded in the junction of sealed tube pallet and shield machine housing.
Also be provided with bypass pipe on the said orifice tube.
Owing to adopted such scheme, the present invention to have following characteristics: this method is protected the enforcement of shield structure mating operation only there being one-sided tunnel to possess the frozen soil curtain that can form sealing, safety under the situation of frozen construction operating condition.And, only need a refrigeration station.
Description of drawings
Fig. 1 is a shield structure body boring device structural representation of the present invention.
Fig. 2 sets the apparatus structure sketch map for the crooked freezing pipe of the present invention.
Fig. 3 is that orifice tube pallet of the present invention is connected sketch map with orifice tube.
Fig. 4 is that steady rest of the present invention is connected sketch map with the sealed tube pallet.
Fig. 5 is a shaped form sealed tube structural representation of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing illustrated embodiment the present invention is further described.
A kind of shield structure is to the one-sided freezing process of ground plane bend pipe, and it may further comprise the steps:
1) installing orifice tube 4 on shield machine housing 1, orifice tube 4 is through orifice tube pallet 2 permanent positions, and orifice tube pallet 2 is fixed on the shield machine housing 1 through bolt 3;
2) orifice tube 4 is provided with ball valve 7 at the end away from shield machine housing 1; Ball valve 7 other ends are provided with linear sealed tube 8; Open the valve of ball valve 7, the drilling rod 9 that preferred dimension is fit to passes linear sealed tube 8, ball valve 7 and orifice tube 4 successively; And bore to pass through shield machine housing 1, ball valve 7 is closed after withdrawing from drilling rod;
3) linear sealed tube 8 is replaced by the shaped form sealed tube 10 identical with freezing pipe 12 curvature; Steady rest 11 1 ends are fixed on the shield machine housing 1 through sealed tube pallet 13; The other end is fixed on the shaped form sealed tube 10, is connected with the freezing pipe 12 insertion shaped form sealed tubes 10 of bending and with tamping tube hammer;
4) adjustment freezing pipe 12 and tamping tube hammer orientation make freezing pipe 12 and tamping tube hammer on the freezing pipe axis of design; Compress shaped form sealed tube 10, open ball valve 7, begin to ram pipe and make freezing pipe 12 get into orifice tube 4, shield structure body, ram freezing pipe 12 piecemeal, and weld follow-up freezing pipe 12, arrive at an other side shield structure body shell place up to the end of freezing pipe 12.
Put more energy into floor 5 and 2 welding of orifice tube pallet are set, to strengthen its intensity around orifice tube 4.The floor 5 of putting more energy into is welded in the junction of being fixed in shield machine housing 1 at sealed tube pallet 13, to strengthen its rigidity.Bypass pipe 6 is installed, so that when ramming freezing pipe 12, discharge the water and soil resistance that freezing pipe 12 is squeezed into freezing pipe 12 ends in the process on orifice tube 4.
Like Fig. 1, shown in Figure 2, employed freezing pipe sets device in the said method, comprises orifice tube pallet 2, orifice tube 4, bypass pipe 6, ball valve 7, linear sealed tube 8, drilling rod 9, shaped form sealed tube 10, steady rest 11, freezing pipe 12.
As shown in Figure 3, orifice tube pallet 2 is used for fixing orifice tube 4, and it is fixed on the perforate steel plate on the shield structure shell 1 through bolt 3, and adopts rubber washer to carry out water shutoff at the connecting portion of itself and shield structure shell 1.Bypass pipe 6 is installed on the orifice tube 4, is used for discharging the water and soil resistance that freezing pipe 12 is squeezed into freezing pipe 12 ends in the process.Ball valve 7 is arranged at the end of orifice tube 4 away from an end of shield structure shell 1, and it is the device that carries out the temporary shutoff of pipeline in the time of in work progress, need extracting drilling rod 9 or freezing pipe 12.Linear sealed tube 8 and shaped form sealed tube 10 are respectively the devices of squeezing into shutoff orifice tube 4 internal water and mud in the process at drilling rod 9 and freezing pipe 12, and inside stuffing is a packing.As shown in Figure 5; Shaped form sealed tube 10 improves according to existing linear sealed tube and forms; Curvature according to required in the actual engineering is made, and comprises outer tube 15, interior pipe 16 and packing 17, and interior pipe 16 ends are provided with packing 17; And interior pipe 16 is sheathed within the outer tube 15; Make packing 17 be close to freezing pipe 12 outer walls thereby when first section freezing pipe gets into the shaped form sealed tube, inwardly push away through interior pipe 16 with shaped form sealed tube 10, then with manage 16 in the sealed tube, outer tube 15 fix to realize the shutoff of mud through flange, guarantees the sealing of the overall process of freezing pipe entering sealed tube.Steady rest 11 is installed on the two ends of shaped form sealed tube 10; Because crooked freezing pipe 12 is identical with the radius of curvature of shaped form sealed tube 10; Through to the fixedly realization of the shaped form sealed tube 10 positions location to freezing pipe 12, as shown in Figure 4, steady rest 11 adopts certain thickness steel plate; The hole while prepared screw-bolt hole that one end is reserved semicircle comes junction curve shape sealed tube 10; The other end is welded on the sealed tube pallet 13 on the shield structure housing 1, and sealed tube pallet 13 is interim steel plates for convenience detach that on shield structure housing 1, are provided with for fixing-stable frame 11, is connected with shield structure housing 1 through bolt; Be stablizing of assurance structure, and weld the floor 5 of putting more energy at connecting portion and strengthen.Because the linear sealed tube 8 that is adopted during 1 boring of 9 pairs of shield structures of drilling rod housing; The shaped form sealed tube 10 that is adopted when ramming with respect to freezing pipe 12 is shorter; Thereby it is nearer apart from shield structure housing 1, and does not bear the effect of the power of linear sealed tube axis 8 directions of offset straight at the process cathetus shape sealed tube 8 of boring, and the fixing of position guarantees easily in boring procedure; So the sealed tube pallet need be set; And shaped form sealed tube 10 is beaten at the rammer of the freezing pipe 12 of bending and is made shaped form sealed tube 10 off-design orientation in the process easily and produce deviation, thus adopt steady rest 11 to fix, and sealed tube pallet 13 is set.
In order to guarantee that crooked freezing pipe 12 can be smoothly through the orifice tube 4 of straightway, the diameter of orifice tube 4 is greater than crooked freezing pipe 12 diameters.
The above-mentioned description to embodiment is can understand and use the present invention for ease of the those of ordinary skill of this technical field.The personnel of skilled obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the invention is not restricted to the embodiment here, those skilled in the art are according to announcement of the present invention, and not breaking away from the improvement that category of the present invention makes and revise all should be within protection scope of the present invention.
Claims (11)
1. a shield structure is characterized in that the one-sided freezing process of ground plane bend pipe: adopt crooked freezing pipe only needing to realize the one-sided tunnel arrangement in butt joint tunnel, both sides to freeze system, need not the opposite side tunnel frozen construction operating condition is provided.
2. a shield structure is to the one-sided freezing process of ground plane bend pipe, and it is characterized in that: it may further comprise the steps:
1) on the shield machine housing, installs orifice tube; Orifice tube is provided with ball valve away from shield machine housing one end; The ball valve other end is provided with the linear sealed tube, opens ball valve, and the drilling rod that preferred dimension is fit to passes linear sealed tube, ball valve and orifice tube successively; And bore and pass through the shield machine housing, withdraw from drilling rod and close ball valve;
2) the linear sealed tube is replaced by the shaped form sealed tube; First section of the pipeline section of freezing of bending inserted the shaped form sealed tube and be connected with tamping tube hammer; Adjustment freezing pipe and tamping tube hammer orientation; Make freezing pipe and tamping tube hammer on default freezing pipe axis, open ball valve, begin to ram pipe and make freezing pipe get into orifice tube, shield structure body;
3) ram freezing pipe piecemeal, and weld follow-up freezing pipe, arrive at opposite side shield structure body shell place until the freezing pipe end.
3. shield structure as claimed in claim 2 is characterized in that the one-sided freezing process of ground plane bend pipe: the length of said shaped form sealed tube is greater than the linear sealed tube, and its curvature is identical with the curvature of freezing pipe.
4. shield structure as claimed in claim 2 is characterized in that the one-sided freezing process of ground plane bend pipe: put more energy into floor and welding of orifice tube pallet and permanent position are set around the said orifice tube, and the orifice tube pallet is fixed on the shield machine housing.
5. shield structure as claimed in claim 2 is characterized in that the one-sided freezing process of ground plane bend pipe: an end of said shaped form sealed tube and steady rest is affixed, and the other end of steady rest is fixed on the shield machine housing through the sealed tube pallet; The floor of putting more energy into is welded in the junction of sealed tube pallet and shield machine housing.
6. shield structure as claimed in claim 2 is characterized in that the one-sided freezing process of ground plane bend pipe: also be provided with bypass pipe on the said orifice tube.
7. employed freezing pipe sets device in the described method of claim 2; It is characterized in that: comprise orifice tube, ball valve, sealed tube, drilling rod and freezing pipe; Orifice tube one end is fixed on the shield machine housing, and the other end is connected with ball valve one end, and the ball valve other end links to each other with sealed tube one end; Sealed tube comprises linear sealed tube and shaped form sealed tube; When drilling rod is holed to the shield machine housing through sealed tube, ball valve and orifice tube; Sealed tube is selected the linear sealed tube for use, and when freezing pipe passed the shield machine housing through sealed tube, ball valve and orifice tube, sealed tube was selected the shaped form sealed tube for use.
8. freezing pipe as claimed in claim 7 sets device, it is characterized in that: the length of said shaped form sealed tube is greater than the linear sealed tube, and its curvature is identical with the curvature of freezing pipe.
9. freezing pipe as claimed in claim 7 sets device, it is characterized in that: put more energy into floor and welding of orifice tube pallet and permanent position are set around the said orifice tube, and the orifice tube pallet is fixed on the shield machine housing.
10. freezing pipe as claimed in claim 7 sets device, it is characterized in that: an end of said shaped form sealed tube and steady rest is affixed, and the other end of steady rest is fixed on the shield machine housing through the sealed tube pallet; The floor of putting more energy into is welded in the junction of sealed tube pallet and shield machine housing.
11. freezing pipe as claimed in claim 7 sets device, it is characterized in that: also be provided with bypass pipe on the said orifice tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103218194A CN102392653A (en) | 2011-10-21 | 2011-10-21 | Bent pipe one-sided freezing method for shield docking of stratum and freezing pipe driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103218194A CN102392653A (en) | 2011-10-21 | 2011-10-21 | Bent pipe one-sided freezing method for shield docking of stratum and freezing pipe driving device |
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| CN102392653A true CN102392653A (en) | 2012-03-28 |
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| CN2011103218194A Pending CN102392653A (en) | 2011-10-21 | 2011-10-21 | Bent pipe one-sided freezing method for shield docking of stratum and freezing pipe driving device |
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Cited By (7)
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| CN103590835A (en) * | 2013-11-28 | 2014-02-19 | 北京中煤矿山工程有限公司 | PVC freezing pipe for shield tunneling freeze-consolidation |
| CN104863605A (en) * | 2015-04-20 | 2015-08-26 | 北京中煤矿山工程有限公司 | Once-through drilling method capable of cutting barriers in water-rich sand layer |
| CN107083964A (en) * | 2017-05-19 | 2017-08-22 | 中铁隧道集团有限公司 | Hard-soft heterogeneous ground shield tunnel construction advanced support method |
| CN109209422A (en) * | 2018-10-30 | 2019-01-15 | 浙江科技学院 | The intelligent elevated cutting arrangement of multi-region freezing type for soft or hard stratum |
| CN109403998A (en) * | 2018-10-30 | 2019-03-01 | 浙江科技学院 | Multi-region freezing type for soft or hard stratum goes up and down drilling method |
| CN110056359A (en) * | 2019-04-10 | 2019-07-26 | 中铁十二局集团有限公司 | The freezing hole construction method of tunnel freezing curtain |
| CN113279714A (en) * | 2021-06-15 | 2021-08-20 | 北京中煤矿山工程有限公司 | Device and process for pulling out drilling rod of anti-sand-gushing water-falling freezing pipe in subway tunnel construction |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103590835A (en) * | 2013-11-28 | 2014-02-19 | 北京中煤矿山工程有限公司 | PVC freezing pipe for shield tunneling freeze-consolidation |
| CN104863605A (en) * | 2015-04-20 | 2015-08-26 | 北京中煤矿山工程有限公司 | Once-through drilling method capable of cutting barriers in water-rich sand layer |
| CN107083964A (en) * | 2017-05-19 | 2017-08-22 | 中铁隧道集团有限公司 | Hard-soft heterogeneous ground shield tunnel construction advanced support method |
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| CN109209422A (en) * | 2018-10-30 | 2019-01-15 | 浙江科技学院 | The intelligent elevated cutting arrangement of multi-region freezing type for soft or hard stratum |
| CN109403998A (en) * | 2018-10-30 | 2019-03-01 | 浙江科技学院 | Multi-region freezing type for soft or hard stratum goes up and down drilling method |
| CN110056359A (en) * | 2019-04-10 | 2019-07-26 | 中铁十二局集团有限公司 | The freezing hole construction method of tunnel freezing curtain |
| CN113279714A (en) * | 2021-06-15 | 2021-08-20 | 北京中煤矿山工程有限公司 | Device and process for pulling out drilling rod of anti-sand-gushing water-falling freezing pipe in subway tunnel construction |
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Application publication date: 20120328 |