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EP3112580B1 - Procédé et dispositif pour la formation d'une canalisation souterraine - Google Patents

Procédé et dispositif pour la formation d'une canalisation souterraine Download PDF

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Publication number
EP3112580B1
EP3112580B1 EP16176198.6A EP16176198A EP3112580B1 EP 3112580 B1 EP3112580 B1 EP 3112580B1 EP 16176198 A EP16176198 A EP 16176198A EP 3112580 B1 EP3112580 B1 EP 3112580B1
Authority
EP
European Patent Office
Prior art keywords
drill
drill shaft
shaft
bore
ground
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.)
Not-in-force
Application number
EP16176198.6A
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German (de)
English (en)
Other versions
EP3112580A1 (fr
Inventor
Werner Zimmer
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Individual
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Individual
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Filing date
Publication date
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Publication of EP3112580A1 publication Critical patent/EP3112580A1/fr
Application granted granted Critical
Publication of EP3112580B1 publication Critical patent/EP3112580B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • E21B11/00—Other drilling tools
    • 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
    • E21B7/04—Directional drilling

Definitions

  • the invention relates to a method for forming an underground pipeline, in which a hole with a horizontal direction component is introduced from a cavity in the ground using a drilling tool in the ground.
  • the invention further relates to a device for carrying out the method.
  • a method of the type mentioned is from the DE 196 25 073 A1 which describes a method for the introduction of drainage and seepage pipes in trenchless construction.
  • start and target manholes are created and the drainage or leachate pipes introduced by means of a horizontal tunneling technique in a substrate, fed into the tube introduced a filter tube and the annulus between the inserted tube and the inner filter tube with a filter medium such as sand, gravel or the like , refilled.
  • the EP 1 818 499 A1 describes a device for simultaneously drilling and out-boring, comprising a drill bit supported by a drill string, at least one cladding tube, and a drill bit connected connector for displacing the fill tube in a drilled hole.
  • WO 2007/143773 A1 shows a small tunneling device, which is provided with a connected to the front end of one or more insects Bohrkopfteil, which is driven by an external drive device, provided.
  • a strand of intermediate drill rods can be formed, which allows an extension of the borehole generated before the drill head part.
  • Each of the intermediate drill rods has a drive shaft mounted in a housing, by means of which the drill head part can be driven.
  • the present invention has for its object to provide a simpler compared to the prior art method for forming the underground pipeline.
  • the object is achieved in that the drilling tool comprises a drill bit and for driving the drill bit while applying the torque a hollow drill shank, the drill shank after insertion of the drilling tool remains in the ground, and the pipe is formed by the drill shank.
  • the formation of the tubing through the hollow drill shank out of the cavity provides the opportunity to drill and install the tubing in a single process step. Since the drilling and laying can be carried out completely underground, no material must be removed from the earth's surface and it must be made no precautions.
  • the bore can be formed as a blind hole or as a connecting hole between two cavities, preferably two shafts.
  • the drill shaft is formed from at least two tubular segments which can be connected to one another at their ends.
  • additional segments are successively attached to an end of the drill shank facing away from a drill bit in order to extend the drill shank.
  • pipelines can be formed whose lengths can be a multiple of the diameter of the cavity.
  • the work can be carried out even from narrow shafts out.
  • the segments are expediently provided with threads for their connection at their ends, wherein the segments are preferably designed such that the outer surfaces of respective adjacent segments are flush with one another.
  • the threads are provided in such a direction that the segments are bolted together by the torque applied during drilling.
  • the segments must then be screwed together, but not necessary, they screw together firmly or to fix them separately in the screwed position.
  • soil material separated from the soil which is arranged in the drill shank during drilling, is flushed out of the drill shank by means of a flushing liquid.
  • the flushing liquid is moved along the outside of the drill shaft.
  • a lubricating film which reduces drilling forces between the drill shank outer surface and the ground occurring frictional forces, so for introducing the hole in the soil, in particular by soil, rock , Concrete and / or combinations thereof may be formed, only a comparatively small torque is necessary.
  • Soil material in the area of the drill bit is loosened and drilling is facilitated thereby.
  • the irrigation fluid is moved along the outside of the drill shank to a drill bit disposed at one end of the drill shank and through the drill bit into the interior of the drill shank.
  • Soil material that accumulates in the interior of the drill shaft during drilling and is formed by a drill core and / or by material comminuted during drilling is moved out of the drill shaft counter to the drilling direction and out at the end of the drill shaft which is arranged in said cavity taken from the drill shank.
  • the inner diameter of the drill bit is smaller than the inner diameter of the drill shaft to form a gap between the outer surface of the drill core and the inner surface of the drill shaft in the axial direction of the drill shank.
  • the gap has a width ⁇ 10 mm, preferably ⁇ 5 mm.
  • a width ⁇ 3 mm may be sufficient.
  • the outer diameter of the drill bit is larger than the outer diameter of the drill shaft to form between the outer surface of the drill shaft and the inner wall of the bore in the axial direction of the drill shank a gap which preferably completely surrounds the drill shaft.
  • the gap serves to supply the rinsing liquid, on the other hand, the said lubricating film is formed in it.
  • This gap also expediently has a width ⁇ 10 mm, preferably ⁇ 5 mm.
  • a width ⁇ 3 mm may be sufficient.
  • the flushing liquid when it swells, after completion of the bore close the space formed between the drill shank and the inner wall of the bore and / or cavities present in the ground and thereby stabilize the underground pipeline.
  • a sealing device is arranged, which arranged in the bore portion outer surface of the drill shank against the cavity, in particular the gap formed between the drill shank outer surface and a bore inner wall , seals.
  • the sealing device preferably has a fastening ring for fastening the sealing device in the cavity, a sealing ring which is provided for resting on the outer surface of the drill shaft and optionally a clamping ring, by means of which the sealing ring is held on the fastening ring.
  • the sealing ring is expediently placed with its inside sealing on the outside of the drill shank, so that the annular gap is completely covered by the sealing ring.
  • it can be avoided when drilling and laying below the groundwater level through the sealing device that groundwater penetrates through the gap in the cavity.
  • the device according to the invention has a flushing device, by means of which the flushing fluid can be introduced into the bore, in particular the gap formed between the drill shaft outer surface and the inner wall of the bore.
  • a flushing device can be set up to control a flushing agent flow rate, a flushing agent flow speed and / or a pressure with which the flushing agent is introduced into the bore.
  • the purging device can be equipped with a measuring device which determines the difference between the amount of rinsing fluid introduced and the amount of rinsing fluid which is flushed out of the drill shaft. By such a measurement, information about a condition of the soil, in particular about the porosity of the soil or possibly existing cavities, can be obtained.
  • the device according to the invention comprises a device for holding, moving and guiding the drilling tool, which is preferably provided for arrangement in the cavity.
  • a device for control and / or regulation of the bore in particular to be able to arrange it outside the cavity, for example on the earth's surface next to the cavity, be spatially separated from the movement, holding and guiding device.
  • the device is provided with a spraying device, by means of which a liquid, hardenable support material, preferably concrete, seen in the direction of drilling before the drill shank and the drill bit can be introduced into the soil.
  • the spraying device preferably has a lance, through which the liquid support material can be introduced into the soil and which is inserted into the soil in such a way that its end, through which the support material emerges, is arranged in the drilling direction in front of the drill head.
  • porous or unstable soil in which the pipeline is to be formed can be solidified. This can on the one hand be ensured that the pipeline can be laid in a desired direction, on the other hand, the pipeline can be better supported by the support material in the ground.
  • the support material is introduced simultaneously with the bore, wherein expediently support material is used which cures so quickly that even relatively short time, preferably at most 5 minutes, can be drilled into the solidified support material after spraying.
  • the support material is, for example, fast-curing concrete or a thermoset, such as a casting resin.
  • Fig. 1 shows two arranged in a soil 7 vertical wells 9,10, the are connected to each other by means of an existing, clogged by a deposit pipe 19 18, which is provided for example for the exchange of liquids for groundwater regulation between the two shafts 9,10.
  • a subterranean pipeline 41 which extends in the horizontal direction (arrow 43) and is formed from tubular segments 20-22 of the drill shaft 4 is provided for forming a new connection of the shaft 9 with the shaft 10, introduced into the soil 7.
  • the finished pipeline 41 shows Fig. 4 ,
  • An in Fig. 1 shown drilling apparatus 2 for the preparation of the pipeline 41 has a drive means 6 and a drilling tool 3, which comprises a drill bit 5 and the hollow shaft 20 formed from the hollow cylindrical segments 20-22.
  • the drive device 6 is provided to drive the drilling tool 2 into the ground 7 and to exert a torque on the drilling tool 2.
  • both the outer diameter and the inner diameter of the drill bit 5 are larger than those of the drill shank 4 the rinsing liquid is entered.
  • a core which possibly forms in the drill shank 4 has an outer diameter which is smaller than the inner diameter of the drill shank 4 and thereby prevents the core settling in the drill shank 4.
  • the drilling device 2 further comprises a device 11 for aligning the drill shank 4 during drilling and means 13 for fixing the drilling device 2 in the shaft 9, by means of which the drilling device 2 is clamped to an inner wall 14 of the shaft wall in the shaft 9.
  • the fastening means 13 are for this purpose on opposite wall portions of the inner wall 14 of the shaft 9 to form a frictional connection.
  • the drilling apparatus 2 further has a drive unit 15 and a device 16 for controlling and / or regulating the drive unit 15 and a flushing device 24 explained below, which can be arranged outside the shaft 9.
  • the drive unit 15, which preferably comprises a hydraulic unit, generates a force which is transmitted via a connecting line 17 to the drive means 6 and there in the torque for drilling and a propelling force of Drill 2 is converted.
  • the drilling device 2 is provided with a sealing device 40, through which the segments 20-22 of the drill shank 4 are guided and which is arranged on a shaft wall 14 of the shaft 9.
  • the sealing device 40 comprises a metal ring 45 to be fastened to the shaft wall, a clamping ring 46 and a sealing ring 47 to be clamped between clamping ring 46 and metal ring 45, which is provided for bearing on an outer side of the drill shank 4.
  • the tubular segments 20,21 of the drill shank 4 are provided at their ends with threads, by means of which they can be screwed together.
  • the segments 20-22 are preferably formed from a stainless steel which has a high enough strength to transmit the torque for drilling and suitable corrosion properties. It will be appreciated that the segments 20-22 may be made of other materials such as e.g. Aluminum, composites, steel and / or cast iron could be formed.
  • Fig. 3 shows the said rinsing device 24, which is provided for introducing a swelling rinse liquid, such as bentonite, in the annular gap 25 under pressure (arrow 26).
  • a flow rate and the pressure of the introduced rinsing liquid is regulated by means of the regulating device 16.
  • the flushing liquid flows along the outside of the drill shank 4 to the drill bit 5 (arrow 27) and forms a lubricating film between the inner wall of the bore 8 and the drill shank 4. It then flows around the drill bit 5 and flows through it into the interior of the drill shank 4 (Arrow 28). In this case, the soil 7 is loosened in an area around the drill bit 5 and thereby facilitates the bore.
  • a rinsing fluid flow formed in the interior of the drill shank 4 material being chipped from the drill bit 5 is transported to the shaft 9 during drilling (arrow 29, 30) and fed to a collecting device 31, which is preferably located outside the shaft 9 and for which a separate pump can be provided.
  • a collecting device 31 which is preferably located outside the shaft 9 and for which a separate pump can be provided.
  • a separate drilling device from the shaft 9 drilled out and broken it or be pushed out of the pipe 41 after completion of the bore.
  • a shaft wall bore is provided in the inner wall 14 of the shaft 9, through which the drill shaft 4 formed from the first segment 20 can be guided with the drill bit 5 arranged at one end of the segment 20, and the sealing device 40 is fastened to the inner wall 14.
  • the drilling device 2 is positioned on the bottom of the shaft 9 and fixed by means of the fastening means 13 on wall portions of the shaft 9 on the inner wall 14.
  • the segment 20 is introduced into the alignment device 11, to which the drill bit 5 is attached at one end.
  • the side of the segment 20 facing away from the drill bit 5 is connected to the drive device 6 such that the segment 20 forming the drill bit shaft can transmit the torque for drilling to the drill bit 5.
  • the drill bit 5 and the first segment 20 are moved through the sealing ring 46 of the sealing device 40 and started with the bore.
  • the rinsing liquid is introduced into the annular gap 25 by means of the rinsing device 24 (FIG. Fig. 2 ).
  • a scavenging pressure, with which the rinsing liquid is introduced into the gap 25, is adjusted by means of the regulating device 16 such that it is greater than the pressure of the groundwater, in order to push the groundwater away from the machined region.
  • the rinsing liquid flows along the outer surface of the drill shank 4 and through the drill bit 5 to form the lubricating film. It may also flow into voids 32 present in the soil 7 to fill them ( Fig. 2 , Arrow 33). After reflux through the segment 20, the flushing liquid exits the interior of the drill shank 4 and is transported into the collecting device 31 together with the material separated and comminuted during drilling from the ground.
  • the drill bit 5 When the drill bit 5 reaches the other shaft 10, it is removed from the segment 20 and the end of the segment 20 is secured in the shaft and sealed.
  • the sealing device 40 and the drilling device 2 are removed from the shaft 9 and secured the last inserted segment 22 in the shaft 9 and the segment 22 sealed against the inner wall of the shaft 9.
  • the drill shank 4 remains in the ground 7 and forms the underground pipe 41, which is now functional.
  • a further drilling device 2a according to the invention which is suitable in particular for the formation of the underground pipeline in soft, unstable and / or porous soils, differs from that according to FIGS Fig. 1 to 3 in that a tubular lance 35 is guided through the interior of a drill shank 4a and projects with an end section 36 through a drill bit 5a out of the drill shank 4a.
  • the lance 35 is formed from segments not shown here, can be successively extended and move in the drill shank 4a back and forth in order to arrange them as the bore progresses continuously in front of the drill bit 5a can.
  • a curable material eg fast-hardening concrete
  • a curable material eg fast-hardening concrete
  • the hole is as above using the Fig. 1-3 described carried out.
  • the previously stabilized by the material area is now indeed pierced and the previously introduced material removed again, the space surrounding the hole, but is stabilized by the material.
  • the injection of the material into the bottom 7a and the subsequent drilling of the material takes place step by step or continuously.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (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)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Claims (15)

  1. Procédé de formation d'une canalisation souterraine (41), dans lequel un forage (8) ayant une composante directionnelle horizontale est ménagé dans le sol (7) à partir d'un creux (9) dans le sol (7) en utilisant un outil de forage (3),
    caractérisé en ce que
    l'outil de forage (3) comprend une couronne de forage (5) et une tige de foret creuse (4) pour entraîner la couronne de forage (5) en exerçant un couple de rotation, après introduction de l'outil de forage (3) la tige de foret (4) demeure dans le sol et la canalisation (41) est formée par la tige de foret (4).
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    le matériau (42) séparé vis-à-vis du sol (7) qui vient se placer dans la tige de foret (4) est éjecté par rinçage hors de la tige de foret (4).
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que
    un liquide de rinçage est déplacé le long du côté extérieur de la tige de foret (4) et de préférence jusqu'à une couronne de forage (5) et à travers la couronne de forage (5) jusqu'à l'intérieur de la tige de foret (4).
  4. Procédé selon l'une des revendications 1 à 3,
    caractérisé en ce que
    lors du forage, un intervalle (25) se forme entre la surface extérieure de la tige de foret (4) et la surface enveloppe intérieure du forage (8), intervalle qui entoure de préférence complètement la surface extérieure.
  5. Procédé selon la revendication 4,
    caractérisé en ce que
    dans le creux (9), en particulier sur une paroi intérieure (14) du creux (9), un dispositif d'étanchéification (40) est inséré pour étancher la tige de foret (4) contre la paroi intérieure (14).
  6. Procédé selon l'une des revendications 2 à 5,
    caractérisé en ce que
    à titre de liquide de rinçage, on utilise un liquide de préférence gonflant, comprenant en particulier de la bentonite.
  7. Procédé selon l'une des revendications 1 à 6,
    caractérisé en ce que
    la tige de foret (4) est formée par au moins deux segments (20 - 22) cylindriques creux susceptibles d'être reliés l'un à l'autre à leurs extrémités (23).
  8. Procédé selon l'une des revendications 1 à 7,
    caractérisé en ce que
    le forage (8) est réalisé sous forme de forage de liaison entre deux creux (9, 10), de préférence entre deux puits, ou bien il est réalisé sous forme de trou borgne.
  9. Procédé selon l'une des revendications 1 à 8,
    caractérisé en ce que
    un matériau durcissant (38), de préférence du béton, est introduit dans le sol (7) par un dispositif de projection (35), de préférence une lance agencée en direction du forage de liaison (8a).
  10. Dispositif de formation d'une canalisation souterraine (41), qui est prévu pour ménager un forage (8) ayant une composante directionnelle horizontale dans le sol (7) à partir d'un creux (9) dans le sol (7) en utilisant un outil de forage (3),
    caractérisé en ce que
    l'outil de forage (3) comprend une couronne de forage (5) et une tige de foret creuse (4) pour entraîner la couronne de forage (5) en exerçant un couple de rotation, la tige de foret (4) étant prévue pour, après introduction de l'outil de forage (3), demeurer dans le sol et pour former la canalisation (41).
  11. Dispositif selon la revendication 10,
    caractérisé en ce que
    la tige de foret (4) est formée par au moins deux segments (20 - 22) cylindriques creux susceptibles d'être reliés l'un à l'autre à leurs extrémités.
  12. Dispositif selon la revendication 10 ou 11,
    caractérisé en ce que
    le diamètre extérieur d'une couronne de forage (5) de l'outil de forage (3) est supérieur au diamètre extérieur de la tige de foret (4), et/ou le diamètre intérieur de la couronne de forage (5) est inférieur au diamètre intérieur de la tige de foret (4).
  13. Dispositif selon l'une des revendications 10 à 12,
    caractérisé en ce que
    il est prévu un moyen pour retenir (12), déplacer (6) et guider (11) l'outil de forage (3), qui est prévu de préférence pour être agencé dans le creux (9).
  14. Dispositif selon l'une des revendications 10 à 13,
    caractérisé en ce que
    il est prévu un moyen d'étanchéification (40) pour être agencé dans le creux (9), en particulier sur une paroi intérieure (14) du creux (9),
    et le moyen d'étanchéification (40) comprend de préférence une bague de fixation, une bague de serrage et une bague d'étanchéité.
  15. Dispositif selon l'une des revendications 10 à 14,
    caractérisé en ce que
    il est prévu un moyen de rinçage (24) pour introduire le liquide de rinçage dans un intervalle annulaire (25) qui se forme entre la surface extérieure de la tige de foret (4) et une paroi intérieure du forage.
EP16176198.6A 2015-07-01 2016-06-24 Procédé et dispositif pour la formation d'une canalisation souterraine Not-in-force EP3112580B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015110582.9A DE102015110582A1 (de) 2015-07-01 2015-07-01 Verfahren und Vorrichtung zur Bildung einer unterirdischen Rohrleitung

Publications (2)

Publication Number Publication Date
EP3112580A1 EP3112580A1 (fr) 2017-01-04
EP3112580B1 true EP3112580B1 (fr) 2018-04-18

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Application Number Title Priority Date Filing Date
EP16176198.6A Not-in-force EP3112580B1 (fr) 2015-07-01 2016-06-24 Procédé et dispositif pour la formation d'une canalisation souterraine

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DE (1) DE102015110582A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110485920B (zh) * 2018-05-15 2021-02-12 长江岩土工程总公司（武汉） 倒垂孔开孔垂直度控制方法
DE102018130849A1 (de) * 2018-12-04 2020-06-04 Werner Zimmer Erdbauverfahren, Erdbauvorrichtung und Erdbauinstallation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1219880B (de) * 1964-11-03 1966-06-30 August Goettker Erben Flachboh Drehantrieb fuer das Bohrgestaenge eines Saugbohrgeraetes
DE3729560A1 (de) * 1987-09-04 1989-03-16 Mts Minitunnelsysteme Gmbh Verfahren und vorrichtung zur herstellung einer rohrleitung in einer im erdreich ausgebildeten durchbohrung
DE19625073A1 (de) * 1996-06-22 1997-01-23 Thomas Dr Ing Daffner Verfahren und Vorrichtung zum Einbringen von Dränage- und Sickerwasserleitungen in geschlossener Bauweise
PL1818499T3 (pl) * 2006-02-09 2011-11-30 Gonar Sp Z O O Urządzenie do równoczesnego wiercenia i obudowania otworów strzałowych
US8151906B2 (en) * 2006-06-16 2012-04-10 Vermeer Manufacturing Company Microtunnelling system and apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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EP3112580A1 (fr) 2017-01-04
DE102015110582A1 (de) 2017-01-05

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