EP0240672B1 - Dispositif de creusement et de transport d'une installation d'avance travaillant sous terre pour des conduites - Google Patents

Dispositif de creusement et de transport d'une installation d'avance travaillant sous terre pour des conduites Download PDF

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Publication number
EP0240672B1
EP0240672B1 EP87101967A EP87101967A EP0240672B1 EP 0240672 B1 EP0240672 B1 EP 0240672B1 EP 87101967 A EP87101967 A EP 87101967A EP 87101967 A EP87101967 A EP 87101967A EP 0240672 B1 EP0240672 B1 EP 0240672B1
Authority
EP
European Patent Office
Prior art keywords
excavating
shaft
equipment according
conveying equipment
annular bellows
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.)
Expired
Application number
EP87101967A
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German (de)
English (en)
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EP0240672A1 (fr
Inventor
Gerd Dr. Ing. Soltau
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.)
Individual
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Individual
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
Priority claimed from DE19863607461 external-priority patent/DE3607461C1/de
Priority claimed from DE19873701851 external-priority patent/DE3701851A1/de
Application filed by Individual filed Critical Individual
Priority to AT87101967T priority Critical patent/ATE41693T1/de
Publication of EP0240672A1 publication Critical patent/EP0240672A1/fr
Application granted granted Critical
Publication of EP0240672B1 publication Critical patent/EP0240672B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • E21B7/201—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes with helical conveying means

Definitions

  • the invention relates to a digging and conveying device of an underground jacking device for pipelines with a preferably non-accessible nominal cross-section, which is driven into the soil from a press shaft and consists of a digging head and at least one follower pressing it and pressed product pipe sections, whereby In the front area of the scraper head, a scraper wheel rotates, which is set into circulation by a shaft, the shaft being surrounded at a distance by a conveyor pipe, the wall of which in the area of the scraper head is sealed off from its outer cylinder jacket, with conveying means in the conveyor pipe for conveying the excavated material back in the direction are provided on the shaft and in the conveying cross section between the shaft and the conveying pipe wall, lock means acting against groundwater ingress are provided.
  • Such a lock means is known from EP-A 0 100 748.
  • the lock means consists of a membrane firmly clamped in the edge of the conveyor pipe wall, by means of which a partitioning against water ingress is to be achieved.
  • the membrane is used in the context of a conveyor device that is part of a device for advancing product pipes or pipe sections from pipes with non-accessible pipe nominal sizes.
  • the pipelines are advanced by means of the jacking device from a press shaft lowered into the ground. From the press shaft, a shaft is guided through the conveyor pipe to a scraper head, which rotates a scraper disc within the scraper head, thereby removing the soil that is present.
  • the removed soil is conveyed back to the press shaft by the screw conveyor surrounding the shaft. From there it is brought to the surface and transported away. So that the excavated soil cannot get between an outer cylinder jacket of the scraper head and the pressed product pipes on the one hand and the conveyor pipe of smaller diameter on the other hand, the outer cylinder jacket of the scraper head is sealed off from the conveyor pipe by means of a truncated cone-shaped face.
  • the lock means consist of pairs of disks, one disk each having a through opening and the other disk having a cutout. When rotating the disc with the cutout, for example together with the rotating screw conveyor, this disc can periodically open and close the passage. If the panes with the cutout are offset from one another in the rotational position, the lock means open alternately.
  • the structure is sensitive to clogging when stones appear.
  • the passage cross section is always partially sealed off. This partial isolation is inevitable.
  • the lock means consist of at least one bellows expandable by means of a flowable medium, through which the shaft extends and with which, according to the need for partitioning and the extent of expansion, the conveying cross section is completely or partially closed or completely open remains.
  • two annular bellows are provided at a mutual distance. With two bellows arranged at a distance, the partitioning effect can be increased in the event of heavy groundwater and pressure.
  • the bellows are periodically expandable in opposite directions to form locks and can be retracted to form a partition.
  • intermittent lock operation can be introduced, with the partition becoming better and better, the more bellows according to a further embodiment of the Invention are provided at a distance from each other.
  • one bellows creates a partition in its effective area
  • the other bellows cancels the partition.
  • the removed soil and water can be collected in one work cycle and discharged in the other work cycle.
  • One bellows each creates a total partition.
  • the excavated material can be conveyed back in that a screw conveyor is provided on the shaft and the working area of the annular bellows is free of screw conveyor parts.
  • a simple and expedient way of conveying is thus combined with a groundwater lock that is adjustable in cross-section.
  • the bellows can act both from the inside out and from the outside in. According to an advantageous development of the invention, however, it is provided that the annular bellows or bellows are arranged on the conveyor tube wall and can be expanded inward from there. This makes it easier to connect the flowable medium.
  • the flowable medium is compressed air or a liquid.
  • an incompressible liquid such as a hydraulic liquid, is particularly suitable as the liquid. With an incompressible liquid, finer regulation or metering of the amount of the flowable medium in the bellows can be achieved, if necessary.
  • the flow of the flowable medium to the annular bellows can be regulated by means of lock valves in lines supplying the medium.
  • lock valves can be both pressure and flow control valves that are remotely controlled from the press shaft or from a surface station.
  • the compressed air medium when compressed air is used as the flowable medium, apart from the particularly regulated supply to the ring bellows, it can be pressed continuously into the scraping area of the scraper head in front of the working face.
  • the compressed air medium thus has the advantage of a double effect in that it is effective in the ring bellows and in the area of the scraper area. Due to the constant pressing of compressed air into the scraper area of the scraper head, a known retention pressure is already exerted on the water present.
  • a flushing line is provided, by means of which the flushing water is seen in the direction of advance, preferably in each case in front of the effective areas of the annular bellows, and can be injected into these effective areas. If there is a blockage when returning the removed soil, this will be removed by the flushing water pressed in.
  • the distance between two effective areas of the annular bellows corresponds approximately to the axial length of two worm threads on the shaft. Such a distance between the effective areas has proven to be suitable for trouble-free operation.
  • the bellows consist of flexible, high-viscosity plastic, such as Pur cell or cell vulcanic foam.
  • a material has proven to be extraordinarily suitable for the rough operation when driving pipes with non-accessible nominal pipe sizes underground.
  • the scraper part 1 shown in FIG. 1 of a device for the underground advancement of pipelines consists of a scraper or control head 3 and a follower 7 that follows the scraper head in the direction of advance according to arrow 5 Fig. 4 shown press shaft 10 are pushed out by means of a propulsion device 11, the follower 7 and the scraper head 3.
  • This tunneling method by pressing individual pipe shots 9 placed one behind the other and this leading trailer 7 and scraper heads 3 is known, as is the possibility of controlling the scraper or control head 3 in front of the trailer 7 in the direction of advance. Details of the opposing pressure surfaces of the individual pipe parts and the control device for the scraper or control head 3 are therefore not explained in detail.
  • a truncated cone-shaped face 12 is located inside the scraper head 3. This face face ends at the forehead 13 of the scraper head 3, which has an opening 14 towards the front in which a scraper disc 15 can run.
  • This scraper disc 15 is arranged at the front end 16 of a shaft 17 which is driven into circulation in the press shaft 10 by the propulsion device 11.
  • a screw conveyor 18 is arranged, with which soil removed from the digging disc 15 is conveyed back to the press shaft.
  • the shaft 17 with the screw conveyor 18 arranged on it rotates in a conveyor tube 19.
  • the shaft 17 with the screw conveyor 18 and the conveyor pipe 19 are divided into parts that can be joined together, the length of which corresponds to the length of the pipe sections.
  • the divisions are indicated by lines denoted by T and their construction is known.
  • the screw conveyor 18 has an interruption area 20a within the follower 7.
  • a hose-like bellows 21, which acts as a groundwater lock, is arranged on the wall of the delivery pipe within the interruption region 20a.
  • the bellows 21 consists of a flexible, high-viscosity plastic, in particular foam plastic.
  • the annular bellows 21 is designed such that it can be expanded inward by introducing a flowable medium, specifically into the cross section 22 of the delivery pipe 19 in the direction of the shaft 17. However, if necessary or desired, the annular bellows would also be conceivable 21 to be attached to the shaft 17 and widened outwards in the direction of the wall of the delivery pipe 19. In both cases, the bellows 21 acts as a lock part, with the help of which the passage cross section of the tube 22 can be changed.
  • the expansion of the bellows 21 can be done either with the help of compressed air or a liquid.
  • An incompressible liquid for example hydraulic liquid, is preferably considered as the flowable liquid medium.
  • the interruption region 20a for the annular bellows 21 must be provided in the region of the end 23 of the delivery pipe on the scraping head side. Its distance from the scraper should be 1.0 m, but can also be placed further back for design reasons.
  • the flowable medium is brought up from the press shaft 10 via a pipeline 24. If the medium is a hydraulic fluid, then the pipe 24 is closed behind a flow rate measuring valve 25 at a point designated by 26. However, if the expansion medium is air, then the pipe 24 is continued with a pipe part 24a until it finally opens into the excavation space 27 in front of the face 12. In a branch from the tube area 24a, which leads to the bellows 21, there is a pressure control valve 28 with which the pressure within the bellows 21 can be adjusted. If necessary, one of the valves 25 and 28 working as sluice valves is also sufficient. An exhaust opening 24b at the end of the pipe part 24a additionally applies compressed air to the scraper chamber 27, thereby preventing or reducing soil erosion in front of the scraper disc 15.
  • a flushing water line 29 is provided, which preferably opens into the interior 31 of the delivery pipe 19 before the interruption area 20a, but in its vicinity.
  • the injection direction via the opening 32 is placed obliquely to the rear, so that the flushing water is injected directly into the area in front of the bellows 21.
  • the lock part in the form of the annular bellows 21 should be able to close the cross section 22 in the interior 31 of the conveying pipe 19 to the desired extent, in order to bring about an adaptation to the flowability of the excavated soil. If the excavated soil contains a higher proportion of groundwater, then its flowability is greater than with a smaller proportion of groundwater. In addition, the eligibility of the soil is different due to its composition.
  • the annular bellows can be inflated, and FIG. 2 shows that the annular bellows 21 closes, for example, half of the cross section 22 of the interior 31 of the delivery pipe 19.
  • Fig. 3 shows how the bellows 21 is expanded so that it rests on the shaft 17.
  • FIG. 5 shows another embodiment of a digging and conveying device with the control head 3 and the follower 7a.
  • the control head 3 and the follower 7a are also driven in this case with the help of the subsequent pipe sections 9 from the press shaft 10 by means of the propulsion device 11 (FIG. 4) into the soil.
  • the cylinder outer wall 65 of the control head 3 has a diameter which corresponds to that of the outer wall 66 of the follower 7a and the outer wall 67 of the pipe sections 9 which are added.
  • the conveyor tube 19, in which the shaft 17, which carries the screw conveyor 18, is rotatable, is located within the follower 7a.
  • the shaft 17 drives the scraper disc 15 in the region of the forehead 13 of the control head 3.
  • the delivery pipe 19 opens inside the control head 3 into the cone-widening face 12.
  • the screw conveyor 18 has interruption areas 20b and 20c within the follower 7.
  • tubular annular bellows 39, 41 are provided in the wall 19a of the delivery pipe 19.
  • These bellows 39, 41 again consist of a flexible, high-viscosity plastic, for example a foam plastic.
  • the annular bellows 39, 41 are designed such that when compressed air is blown into the interior 31 of the delivery pipe 19 they can be expanded such that they enclose the shaft 17 from the outside. From this foreclosure state, however, they can also be retracted to the wall 19a of the conveyor pipe 19, so that extracted soil can be conveyed past them.
  • the annular bellows 39 and 41 are supplied with compressed air via the line 24, which opens into the scraper space 27 in front of the face 12 via an opening 24b.
  • On / off lock valves 49 and 51 are provided, by means of which the compressed air can be introduced into the two bellows 49 and 51.
  • the open / close lock valves le 49 and 51 also have an air discharge position, not shown, via which the compressed air can be blown out of the annular bellows into the cavity 33 between the outer wall of the outer rotor 7a and the delivery pipe 19.
  • a rinsing water line 29 is provided, by means of which rinsing water can be injected into the interruption regions 20b, 20c via openings 55 and 57.
  • Open / close valves 59 and 61 are arranged in the flushing water line 29.
  • the pipe orifices 55 and 57 are held in such a way that inflowing rinse water is injected into the interruption areas 20b, 20c in such a way that it loosens and drives forward pent-up soil in the direction of the press shaft 10.
  • the outlets 55 and 57 are preferably located in front of the interruption regions 20b and 20c, as seen in the direction of advance.
  • Three conveying spaces I, II and 111 can be distinguished in the longitudinal direction of the screw conveyor device.
  • the delivery chamber I is located in the direction of advance in front of the first lock A formed by the annular bellows 39.
  • the delivery chamber II then follows between the locks A and B, the lock B being able to be formed by the annular bellows 41.
  • the delivery room III is located in the direction of advance behind the lock B and leads to the press shaft 10.
  • the air from the annular bellows 39 is emptied into the space 33 by closing the lock valve 49, and the annular bellows withdraws in the direction of the wall of the delivery pipe 19.
  • the lock A is now open.
  • the lock valve 51 was opened.
  • the bellows 41 has thus widened and now surrounds the shaft 17 firmly.
  • the digging disc 15 conveys excavated soil past the lock A to the lock B. This fills the delivery space II. Soil that has been removed is conveyed further away from the delivery chamber 111 in the direction of the press shaft 10.
  • Fig. 7 now shows a state where the removed soil may have clogged the interruption areas 20b and 20c.
  • the flushing water valves 59 and 61 are opened with the locks A, B open, so that the flushing water can inject in the conveying direction into the interruption areas 20b, 20c until the solidified soil has been released by floating and then towards the press shaft 10 can be further promoted.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Claims (12)

1. Dispositif de creusement et d'extraction d'une installation d'avance (11) travaillant sous terre pour des conduites avec, de préférence, une section nominale non praticable, qui est percée depuis un puits aggloméré (10) dans le sous-sol existant et se compose d'une tête de creusement (3) et au moins d'un corps suiveur (7, 7a) pressant celle-ci vers l'avant et de viroles tubulaires de produit (9), un disque de creusement (15) tournant à cette occasion dans la zone frontale (12) de la tête de creusement (3), qui est déplacé en rotation par un arbre (17), l'arbre (17) étant, à cette occasion entouré à une certaine distance par un tube d'extraction (19, 29), dont la paroi (19) est cloisonnée vis-à-vis de son enveloppe extérieure (65) cylindrique, dans la zone de la tête de creusement (3), des moyens de transports (18) étant à cette occasion prévus dans le tube d'extraction (19) pour ramener le produit issu du creusement en direction du puits (10) et des moyens de sas (21) étant prévus à cette occasion dans la section de l'extraction, entre l'arbre (17) et la paroi de tube de transport (19a), agissant contre les irruptions d'eau souterraine, caractérisé en ce que le moyen de sas (21) se compose d'au moins un soufflet annulaire extensible au moyen d'un fluide capable de s'écouler, à travers lequel s'étend l'arbre (17) et avec lequel il est partiellement ou complètement obturé ou reste complètement ouvert, en fonction du besoin de cloisonnement et de la taille de l'élargissement de la section de l'extraction (22).
2. Dispositif selon la revendication 1, caractérisé en ce que les deux soufflets annulaires (39, 41) sont prévus à distance réciproque.
3. Dispositif selon la revendication 2, caractérisé en ce que les soufflets annulaires (39, 41) sont périodiquement extensibles et rétractables à nouveau, à contre sens et en formant un sas, pour réaliser un cloisonnement.
4. Dispositif selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que'une vis d'extraction (18) est prévue sur l'arbre (17) et que la zone de travail des soufflets annulaires (39, 41) est exempte des parties de vis d'extraction.
5. Dispositif selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le ou les soufflet(s) annulaire(s) (21, 39, 41) sont disposés sur la paroi de tube d'extraction (19) et sont extensibles à partir de là vers l'intérieur.
6. Dispositif selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le fluide capable de s'écouler est de l'air comprimé ou un liquide.
7. Dispositif selon la revendication 6, caractérisé en ce que le fluide capable de s'écouler est un liquide incompressible.
8. Dispositif selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que l'amenée aux soufflets annulaire (21, 39, 41) de fluide capable de s'écouler est susceptible d'être réglée au moyen de soupapes de sas (25, 28, 49, 51) situées dans les conduites (24) amenant le fluide.
9. Dispositif selon la revendication 6, caractérisé en ce que, dans le cas d'utilisation d'air comprimé pour le fluide capable de s'écouler, cet air est constamment admissible sous pression dans la zone de creusement (17) de la tête de creusement (3) du front d'attaque (12), à l'exception de l'amenée spéciale réglée aux soufflets annulaires (21, 39, 41).
10. Dispositif selon la revendication 1, caractérisé en ce qu'une conduite de rinçage (29) est prévue au moyen de laquelle de l'eau de rinçage est susceptible d'être injectée, vu dans le sens d'avancement, de préférence chaque fois devant les zones d'action (20a à 20c) des soufflets annulaires, dans ces zones d'action (20a à 20c).
11. Dispositif selon la revendication 2, caractérisé en ce que la distance entre deux zones d'action (20b, 20c) des soufflets annulaires correspond approximativement à la longueur axiale de deux pas de vis sur l'arbre (17).
12. Dispositif selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le soufflet annulaire (21) est composé d'une matière plastique flexible à haute dureté, en particulier une mousse de matière plastique flexible à haute dureté.
EP87101967A 1986-03-07 1987-02-12 Dispositif de creusement et de transport d'une installation d'avance travaillant sous terre pour des conduites Expired EP0240672B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87101967T ATE41693T1 (de) 1986-03-07 1987-02-12 Schuerf- und foerdereinrichtung einer unterirdisch arbeitenden vortriebsvorrichtung fuer rohrleitungen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19863607461 DE3607461C1 (en) 1986-03-07 1986-03-07 Screw conveyor for an apparatus for the underground driving of pipelines
DE3607461 1986-03-07
DE3701851 1987-01-23
DE19873701851 DE3701851A1 (de) 1987-01-23 1987-01-23 Einrichtung an einer unterirdisch arbeitenden vorrichtung zum vortreiben von rohrleitungen

Publications (2)

Publication Number Publication Date
EP0240672A1 EP0240672A1 (fr) 1987-10-14
EP0240672B1 true EP0240672B1 (fr) 1989-03-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP87101967A Expired EP0240672B1 (fr) 1986-03-07 1987-02-12 Dispositif de creusement et de transport d'une installation d'avance travaillant sous terre pour des conduites

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Country Link
US (1) US4763954A (fr)
EP (1) EP0240672B1 (fr)
DE (1) DE3760078D1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3890978B2 (ja) * 2001-12-26 2007-03-07 石川島播磨重工業株式会社 上向きシールド掘進機の排土装置
US8276687B2 (en) 2009-04-30 2012-10-02 Mclaughlin Group, Inc. Steering head
US9181752B2 (en) 2012-02-03 2015-11-10 William Malcolm Steering head
GB2516333B (en) * 2014-04-02 2017-08-02 Pneutrol Int Ltd Improvements to rotary paddle sensors
CN103982135B (zh) * 2014-04-30 2016-04-06 高广升 旋挖桩机孔底注水变齿多功能穿岩钻

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1741497A (en) * 1925-09-09 1929-12-31 Fred S Boltz Earth-drilling apparatus
US2634114A (en) * 1946-09-04 1953-04-07 Joy Mfg Co Cylinder and piston type coal breaker
DE1442958A1 (de) * 1964-07-08 1968-12-05 Adolf Zimmermann Maschb Fa Vorrichtung zum axialen Abschliessen des Austrittsendes des Schneckenrohres eines Schneckenfoerderers
US4071085A (en) * 1976-10-29 1978-01-31 Grable Donovan B Well head sealing system
US4275926A (en) * 1979-06-28 1981-06-30 Hodges Everett L Down hole pump with bottom receptor
NL169095C (nl) * 1979-07-16 1982-06-01 Ruiter Tech Adviesbureau B V D Inrichting voor het uitvoeren van een ongeveer horizontale ondergrondse boring, voorzien van een buis en een grondafvoerorgaan in de buis.
US4456305A (en) * 1981-09-18 1984-06-26 Hitachi Shipbuilding & Engineering Co., Ltd. Shield tunneling machine
US4482045A (en) * 1981-11-24 1984-11-13 Phillips Petroleum Company Valve and material supply system
DE3228684A1 (de) * 1982-07-31 1984-02-02 Baumann & Burmeister Bauunternehmung Gmbh & Co Kg, 2000 Hamburg Vorrichtung zum vorpressen kleiner, nicht mehr begehbarer rohre

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Publication number Publication date
DE3760078D1 (en) 1989-04-27
US4763954A (en) 1988-08-16
EP0240672A1 (fr) 1987-10-14

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