WO2006007932A1 - Method and tunnel drilling machine or selective cutting machine for driving a tunnel borehole - Google Patents
Method and tunnel drilling machine or selective cutting machine for driving a tunnel borehole Download PDFInfo
- Publication number
- WO2006007932A1 WO2006007932A1 PCT/EP2005/006771 EP2005006771W WO2006007932A1 WO 2006007932 A1 WO2006007932 A1 WO 2006007932A1 EP 2005006771 W EP2005006771 W EP 2005006771W WO 2006007932 A1 WO2006007932 A1 WO 2006007932A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid
- cuttings
- drill head
- pressure
- mixture
- Prior art date
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000005553 drilling Methods 0.000 title claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 63
- 239000000203 mixture Substances 0.000 claims abstract description 24
- 238000000926 separation method Methods 0.000 claims description 17
- 238000007599 discharging Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 3
- 230000005641 tunneling Effects 0.000 claims 7
- 239000000463 material Substances 0.000 abstract description 4
- 210000000481 breast Anatomy 0.000 abstract 3
- 230000008569 process Effects 0.000 description 8
- 230000008093 supporting effect Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 239000012267 brine Substances 0.000 description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 3
- 229910000278 bentonite Inorganic materials 0.000 description 2
- 239000000440 bentonite Substances 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000007613 slurry method Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/04—Driving tunnels or galleries through loose materials; Apparatus therefor not otherwise provided for
Definitions
- the invention relates to a method for propelling a tunnel bore and a tunnel boring machine or roadheader suitable for the application of the method.
- the drill head space for supporting the working face is supported against collapse by means of supporting liquid (eg bentonite).
- supporting liquid eg bentonite
- the application of the cuttings takes place with the aid of a conveying device communicating with the boring head space, at the discharge end of which a suction nozzle is provided for conveying a mixture of cuttings and supporting liquid out of the pressure chamber.
- a quantity of "fresh" support liquid corresponding to the aspirated quantity of support liquid is supplied to the drill head space elsewhere, so that the support pressure desired at the working face is maintained to shred larger pieces of waste into an absorbent size.
- the slurry method is suitable for reliably preventing collapse of the working face during the drilling process in the case of loose soils, it is disadvantageous that it is relatively expensive to use and therefore also expensive.
- EPB operation Earth Pressure Balance
- the collapse of the working face is counteracted by keeping the dissolved cuttings under predetermined earth pressure at a certain pressure.
- the mixture of liquid (for example water) and cuttings present in the drill head space is kept under pressure by means of an air cushion.
- the pressure is kept constant both during the propulsion, as well as during the discharge of a mixture of liquid and cuttings, so as to provide a constant, optimal To ensure support of the working face.
- more or less liquid can be supplied so as to adjust the viscosity of the conditions at the working face.
- water as a liquid is regularly enough. Since no aggregates (eg bentonite) are required, the cuttings are easily landfilled compared to the slurry process. Also, no separation plant for separating cuttings and liquid is required.
- aggregates eg bentonite
- the air cushion is not only used to effect the supporting action of the liquid on the working face, but also to assist the removal of the cuttings.
- the method according to the invention has, among other things, the following advantages over the prior art:
- the tunnel boring or cutting machine according to the invention for carrying out the method according to the invention comprises a machine body with a provided on the side facing the working face of the machine body drill head, seen from the working face behind the drill head back wall, a device by means of which the drill head space liquid can be supplied, a the rear wall sweeping, with its inlet end in the area of the brine of the drill head space in the Bohrkopfraum opening conveyor, by means of which a mixture of liquid and cuttings from the Bohrkopfraum through the rear wall ausbringbar, wherein the conveyor pressure-tight against the environment is closable, with a the conveying device communicating pressure chamber, means for generating a compressed air cushion in the pressure chamber, and means for discharging the mixture of cuttings and liquid under at least substantially maintaining the pressure in the wellhead and in the pressure chamber.
- the drill head can be configured in any desired manner.
- ablation devices with cutting arms as used in partial section systems, are also to be mentioned under the generic term
- the tunnel boring machine or roadheader according to the invention is characterized, inter alia, by a lower one compared to the EPB method
- the conveyor only serves to convey the mixture of liquid and cuttings and not the pressure maintenance.
- the conveyor device comprises a screw conveyor, as is preferred, the screw of the screw conveyor can be freely dimensioned in the embodiment and in diameter for this reason. It can thus be carried out, for example, as a soulless screw or "ribben screw", so that coarser cuttings can be applied without the need for measures in the drill head room to reduce the size of larger drill bits.
- the pressure chamber is formed as part of the housing of the screw conveyor. It preferably has a volume which is large enough to at least substantially maintain the pressure without additional measures even during the discharge.
- the device for discharging the mixture of cuttings and liquid comprises:
- the liquid By provided in the conveying direction behind the lock chamber separation volume and provided herein means for separating cuttings and liquid, the liquid can be separated immediately after leaving the pressure chamber together with Bohrgutfeinan constitution of the coarser cuttings and returned to the Bohrkopfraum or carried away.
- the means for separation preferably comprise a screen separating the separation volume into a cuttings part volume and into a liquid part volume.
- the liquid part volume is preferably connected to means for generating a negative pressure. These may, particularly preferably, comprise a vacuum pump.
- the liquid part volume is connected to means for pollfördem the liquid.
- the latter may include a feed pump, by means of which the liquid can be recycled together with their cuttings in fine fines, for example, in the wellhead and / or can be used for other purposes.
- the sieve is additionally connected to a vibration device, then the separation process between the liquid with cuttings fine cuttings and coarser cuttings can be accelerated.
- tunnel boring or cutting machine according to the invention for applying the method according to the invention can also be equipped with structurally differently configured facilities for discharging the mixture of cuttings and liquid.
- the embodiment of this device described here can also be used independently of the method according to the invention and the tunnel boring machine or roadheader according to the invention. It is thus independently of inventive importance.
- Fig. 1 shows a longitudinal section through the device as well
- the designated as a whole with 100 tunnel boring machine comprises a machine body 1, the lateral surface 2 and its rear wall 3 acting as a rear wall 4 form a Bohrkopfraum 5 behind the working face 6.
- Bohrkopfraum works a drill head 7 of known type.
- a screw conveyor 9 opens into the drill head space 5.
- the screw conveyor 9 has a housing 10, which can be closed off in a pressure-tight manner against the environment and communicates only with the drill head space 5 in the closed state.
- the housing 10 is initially tubular in the mouth region in the drill head space. It is increasing in the direction of funding. Adjoining the tubular region of the housing 10 is an upwardly extending trough-like extension 11, which opens into a pressure chamber 23 provided behind the rear wall 3. The latter can be separated from the trough-like extension 11 by means of a locking slide 24 for the purpose of pressure relief during maintenance and service work.
- the screw conveyor 9 should therefore also be referred to as a "trough screw conveyor".
- a drive motor 12 is arranged for the screw 13 of the screw conveyor 9.
- the worm 13 extends from the brine 8 of the drill head space 5 to a lock system 18 through which a mixture of liquid and cuttings can be fed to a discharge conveyor 15.
- the screw 13 can be displaced in the conveying direction, so that the opening 10 'of the tubular portion of the housing 10 can be closed pressure-tight by means of a bulkhead, not shown in the drawing. Maintenance and service work on the conveyor are thereby made possible.
- a discharge opening 14 for the cuttings is connected to the environment via the separating volume 25 and a pair of optionally openable bulkheads 16, 17 having lock system 18.
- a release of the mixture of liquid and cuttings takes place first in the between the bulkheads 16, 17 formed lock chamber 19 characterized in that with empty lock chamber 19, the bulkhead 16 is opened until the lock chamber 19 has at least substantially filled. Subsequently, the bulkhead 16 is closed and the bulkhead 17 is opened, whereby the mixture of cuttings and liquid passes into the separation volume 25.
- the maintenance of the pressure is used in the pressure chamber 23 and a trough-shaped extension 11 of the housing 10 befindliches compressed air cushion 20 which is generated by means of a compressed air source, not shown in the drawing.
- the pressure exerted by the compressed air cushion 20 on the liquid 21 pressure via the screw conveyor 9 is in the Bohrkopfraum 5, wherein the fact that the pressure-shaped extension above the mirror 22 is separated by the rear wall 3 of the drill head chamber 5, the drill head chamber 5 is completely filled with hydraulic fluid in order to optimize the support of the working face 6.
- a particular advantage of the trough-like expansion is that particularly large Bohrgut technicallye that do not fit through the discharge opening, at least until the extension can be promoted. After shutting off the pressure chamber 23 by means of the locking slide 24, it is then possible, after pressure reduction and spreading the mixture of liquid and cuttings to commit the expansion and to take the necessary measures for discharging the large Bohrgut Swisss, optionally crushing.
- obliquely downwardly inclined sieve 26 which divides the separation volume 25 in a Bohrgutteilvolumen 27 and a liquid part volume 28.
- the liquid part volume 28 is connected to a vacuum pump 29, so that a suction, which is to be symbolized by the arrows P in FIG. 1, can be generated by the cuttings part volume 27 into the liquid part volume 28. Due to this suction, liquid enters the liquid part volume together with cuttings fine cuttings.
- a feed pump 30 is connected, by means of which in the embodiment shown in the drawing, the liquid with the Bohrgutfeinan inconvenience can be recycled via a line assembly 31 in the drill head room. It is understood that in others Wiring fluid can also be supplied, for example, a reprocessing by separation of fine Bohrgutanising.
- the screen 26 is coupled to a vibration device, not shown in the drawing, with which it can be set in a shaking motion.
- the screen 26 may be configured such that the opening width of its meshes is variable.
- the Bohrgutfeinanteil which contains the liquid contained in the liquid part volume 28, the demand can be adjusted.
- the variability of the mesh size can be accomplished by providing two screens in abutment with each other which can be displaced relative to each other.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05772237A EP1769136A1 (en) | 2004-07-20 | 2005-06-23 | Method and tunnel drilling machine or selective cutting machine for driving a tunnel borehole |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004035096A DE102004035096A1 (en) | 2004-07-20 | 2004-07-20 | Driving tunnel borehole involves removing bore material released from drilling head space using mixture of liquid and boring material fed to drilling head space and transport device |
DE102004035096.5 | 2004-07-20 | ||
DE102004040919.6 | 2004-08-23 | ||
DE102004040919A DE102004040919A1 (en) | 2004-08-23 | 2004-08-23 | Driving tunnel borehole involves removing bore material released from drilling head space using mixture of liquid and boring material fed to drilling head space and transport device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006007932A1 true WO2006007932A1 (en) | 2006-01-26 |
Family
ID=35063405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/006771 WO2006007932A1 (en) | 2004-07-20 | 2005-06-23 | Method and tunnel drilling machine or selective cutting machine for driving a tunnel borehole |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1769136A1 (en) |
WO (1) | WO2006007932A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113530564A (en) * | 2021-07-21 | 2021-10-22 | 四川农业大学 | Design method and system for high-altitude railway tunnel portal emergency rescue station |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3705095A1 (en) * | 1987-02-18 | 1988-09-01 | Zueblin Ag | Method for sealing off the subsoil, especially for sealing off the face, in compressed-air driving by means of a bentonite suspension and apparatus for carrying out the method |
EP0385883A1 (en) * | 1989-02-01 | 1990-09-05 | Association pour la Formation Permanente des Cadres de l'Equipement: FORMEQUIP | Method for supporting a mining wall by means of mud injection, tool and injection shield therefor |
DE3937676A1 (en) * | 1989-11-13 | 1991-07-11 | Zueblin Ag | Method of tunnelling in sandy soil - involves using cylindrical shield with conical bore |
-
2005
- 2005-06-23 WO PCT/EP2005/006771 patent/WO2006007932A1/en not_active Application Discontinuation
- 2005-06-23 EP EP05772237A patent/EP1769136A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3705095A1 (en) * | 1987-02-18 | 1988-09-01 | Zueblin Ag | Method for sealing off the subsoil, especially for sealing off the face, in compressed-air driving by means of a bentonite suspension and apparatus for carrying out the method |
EP0385883A1 (en) * | 1989-02-01 | 1990-09-05 | Association pour la Formation Permanente des Cadres de l'Equipement: FORMEQUIP | Method for supporting a mining wall by means of mud injection, tool and injection shield therefor |
DE3937676A1 (en) * | 1989-11-13 | 1991-07-11 | Zueblin Ag | Method of tunnelling in sandy soil - involves using cylindrical shield with conical bore |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113530564A (en) * | 2021-07-21 | 2021-10-22 | 四川农业大学 | Design method and system for high-altitude railway tunnel portal emergency rescue station |
Also Published As
Publication number | Publication date |
---|---|
EP1769136A1 (en) | 2007-04-04 |
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