WO2005098195A1 - Equipement et procede de raccordement de sections de canalisation a collet pour la pose de canalisation sans creusement - Google Patents

Equipement et procede de raccordement de sections de canalisation a collet pour la pose de canalisation sans creusement Download PDF

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Publication number
WO2005098195A1
WO2005098195A1 PCT/CZ2005/000032 CZ2005000032W WO2005098195A1 WO 2005098195 A1 WO2005098195 A1 WO 2005098195A1 CZ 2005000032 W CZ2005000032 W CZ 2005000032W WO 2005098195 A1 WO2005098195 A1 WO 2005098195A1
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WO
WIPO (PCT)
Prior art keywords
pulling
pipe
sections
pipe sections
head
Prior art date
Application number
PCT/CZ2005/000032
Other languages
English (en)
Inventor
Robert CERMÁK
Original Assignee
Cermák A Hrachovec A.S.
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
Application filed by Cermák A Hrachovec A.S. filed Critical Cermák A Hrachovec A.S.
Publication of WO2005098195A1 publication Critical patent/WO2005098195A1/fr

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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
    • E21B7/28—Enlarging drilled holes, e.g. by counterboring
    • 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • 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

Definitions

  • This invention applies to the equipment and way of coupling socket pipe sections for trenchless installation of ductile iron pipe lines under earth surface for the transport of liquid media such as e.g. drinking water, rainwater, sewage water or service water and belongs to the area of underground building construction and municipal economy water management.
  • Pipe laying by means of the trenchless technology under roads, highways, railway banks, rivers etc. has been known in the Czech Republic since the beginning of 90th of the last century.
  • the sections of steel pipe lines for the transport of liquid or gas media are connected together in operation trenches or on the surface by electric arc welding and are pulled-in into the starting pit by means of a drilling rig or another pulling equipment by individual sections or in total length.
  • the pulling head or the pulling hanger is usually fixed to 1st pipe section mostly by electric welds.
  • the equipment consisting of a tool for drilling or breaking old pipelines and pulling-in simultaneously of pin ends of single pipes into box ends of previous pipe sections consisting of a vertical stretching beam with a stretching equipment being connected with a single continuous piece of chain which is connected on its opposite side with a pulling equipment or with a tool for breaking old pipes.
  • Whole completed pipeline has got corresponding outside and inside diameters i.e.are flush jointed.
  • This new plastic pipeline is not determinated for transport of drinking water, the coaxial alignment of short plastic pipes can't be priority of the pullback process which is on the other hand a vital condition for securing tightness coupling of socket pipe sections made of ductile iron.
  • Drilled soil in the quantity of up to several tens of m 3 is transported to the surface and should be taken away outside the working site.
  • Inflexible pipe sections made of ductile iron which have been nowadays used for water mains, gravity sewer systems etc. are pipes of French provenience, type Pont-A- Mousson with Standard sockets. Coupling of pipe sections, i.e. sliding the spigot into the socket of the previous pipe should be carried out with perfectly axially aligned pipes.
  • Angular deviation, so called “axial deflection" of the pipe is allowed only after finishing the assembly of the joint.
  • the permitted angular deviation of individual pipe sections is 1.5° - 5° according to the diameter of the pipe, radius of bend in the permitted angular deviation is 100 m.
  • the trench For the safety's sake the trench must be secured with horizontal sheeting along the whole excavated length.
  • the whole length of the pipeline must be divided into several trench intervals which will be backfilled after laying the pipes and then the work continues in next sections.
  • the excavated soil should be mostly transported out of the working site due to limited occupation of the operation area on the surface.
  • Individual sections of the piping are buried in the trench by means of a crane or hydraulic lorry loader and juta purchase clamps.
  • the trench bottom must be levelled according to the grade line and should be lined with sand or fine rock chips.
  • the sand sub-base of 20 cm thickness approximately must be compacted before laying the pipes.
  • the spigots of the pipe sections are jacked into the sockets manually by means of levers or with the aid of the excavator bucket.
  • the pipe interval assembled in this way should be aligned into the required direction by means of laser or levelling instrument.
  • the tightness of the pipe socket joints of the complete interval of the pipe line should be checked by inner pressure test still before backfilling of excavations. Both ends of the pipe line, i.e. the first spigot and the socket of the last pipe line should be surveyed. Only then the pipe interval can be covered with delivered backfilling material, not with excavated soil and then the assembly of the next pipe interval can be started.
  • Backfilling material must comply with the respective civil engineering standards. Testing of the backfill and of sufficient compaction of the pipe line underbed and overlying bed should be carried out. Final pressure test of the pipeline interval sealing by means of overpressure is carried out at the end. It occurs that thus assembled and laid pipe sections do not comply with pressure test condition and the pipe interval should be re-sealed again. From the practical point of view this procedure is financially demanding and time consuming. Moreover the pipe laying from the surface limits the road traffic as well as the movement of the pedestrians on the pavements, regardless of ecological burden upon the environment during excavation works and transport of soil.
  • the invention offers such a solution which helps to eliminate above all the ecological burden of the life environment caused by excavation works, concentration of earth working machinery and disadvantages of deviations of individual pipe sections from the axis of the pipe line and elimination of all problems connected with the tightness of the pipe interval.
  • the equipment for coupling socket pipe sections for trenchless installation and pulling-in of the pipe line consisting of a drilling rig, drill pipe string, compaction fluted backreamer and a swivel which is connected with the pulling head through a pulling hanger consists, according to this invention in that, that the pulling head is firmly connected with the pulling intermediate pipe , the pulling hanger which is provided with a suspension eye from the inner side of the pulling head which the pulling chain is connected to, passes through the top of the pulling head.
  • the pulling intermediate pipe is provided with two holes for insertion of the pulling pin passing simultaneously through the walls of the spigot of the first pipe section.
  • the pulling chain passing through all drawn pipe sections is connected through a set of pulleys one of which being connected with the piston of the hydraulic chain stretcher, the pulling chain stretcher being braced through a thrust plate on the socket of the last pulled-in pipe section.
  • the pulling hanger is provided with. a conical supporting plate of the same taper ratio as of the pulling head on which the thrust plate is supported. Furthermore the equipment is completed with a U-beam for securing the alignment of pipe sections which is buried on the bottom of the operation trench and is fixed on supporting wooden prisms in the direction and slope of the pulled-in pipe line.
  • the merits of the trenchless laying of the piping of ductile iron consist generally in the installation of the piping under the earth surface without trenches, limitation of the traffic on the communications and on the pavements and in minimum, requirements on the occupation of the working area. These advantages will come to the fore especially when laying the water mains in the town development. For this reason a drilling rig intended for use and equipped for horizontal directional drilling is utilized here.
  • the starting pit and the target operation trench are dug in advance only.
  • the drilling rig drills first the pilot borehole from the surface in the axis of the projected pipe line between the starting pit and the target operation trench.
  • Steering and location of the pilot drilling head are controlled using a DigiTrak R EclipseTM iGPSTM (inGround Positioning System), Subsite R 750 Tracker navigation systems or are performed by other equivalent navigation systems.
  • Navigation systems for pilot drilling heads consist of a transmitting probe which is inserted into the string of drill pipes behind the pilot drilling head. Low-frequency waves on the route of the pilot borehole are intercepted by a worker ("trackman") by means of the above mentioned receiver and on the LCD display which makes part of the receiver the pitch and roll and depth of the pilot drilling head under the ground surface and other necessary data on the trajectory of the pilot hole are displayed in the form of digital targets or icons.
  • the socket pipe sections are drawn in direction towards the drilling rig i.e. "along the hair" (spigot towards the drilling rig), which completely eliminates blocking of the sockets in the walls of the borehole.
  • backreaming and pulling-in of the pipe line replacing and squeezing of a substantial quantity of soil into the walls of the borehole occurs.
  • Pulling-in the pipe line is secured both against breakage and against loss of the pipe line in the borehole caused by the pulling chain.
  • Trenchless laying of the ductile iron piping without surface trenches, excavations of soil and occupations of large areas on the surface maintains original geostatical conditions in the vicinity of the pipe line without backfilling and additional compacting of the overlying rock, thus eliminating the danger of surface soil settlement on the route.
  • Figure 1 represents schematically a general course of pulling-in ductile iron piping under the earth surface.
  • Figure 2 represents 1 st and 2 nd pipe sections laid on a steel U-beam on the bottom of the operation trench. Pulling chain which is fixed to the chain stretcher on one end and in the suspension eye of he pulling hanger on the other end passes through all pipe sections.
  • Figure 3 illustrates the pulling head in connection with 1 st pipe section.
  • Figure 4 represents the coupling of the socket and spigot of ductile iron pipe sections and their interconnection with the pulling chain.
  • Figure 5 is an illustration of the chain stretcher situated on the socket end of the last pipe section. In this Figure the way of pushing the spigot of the pipe section into the socket of the previous pipe section is evident.
  • the equipment for coupling sock et pipe sections for trenchless laying consists of a drilling rig 4, string of drill pipes 5, compaction fluted backreamer 10 and swivel 11 which is connected with pulling head ,15 through pulling hanger JA Pulling head 15 . is connected firmly with pulling intermediate pipe 9, where through top of pulling head 15 passes pulling hanger 13 which, from inner side of pulling head 15 is provided with suspension eye 16 to which pulling chain 7 is connected to.
  • Pulling intermediate pipe 9 is provided with two openings for inserting pulling pin 12 passing simultaneously through the walls of the spigot of 1 st pipe section 3.
  • Pulling chain 7 passing through all pulled-in pipe sections is connected through a set of pulleys one of which is connected with piston 20 of hydraulic chain stretcher 8.
  • Hydraulic chain stretcher 8 is supported through thrust plate 19 on the socket of the last pulled-in pipe section 3.
  • Pulling hanger 13. is provided with supporting plate 14 of the same taper ratio as pulling head L5_ which supporting plate 14 is supp rted on. Further-more the equipment is completed with U-beam 6 for securing the axial alignment of pipe sections which is situated on ttie bottom of the operation trench 1 on wooden suspension prisms 18 in direction and slope of the pulled-in pipe line. This equipment is illustrated in Figures 1 to 5.
  • Figure 1 illustrates practically the course of backreaming of pilot hole and simultaneous pulling-in of pipe sections 3 from operation trench I into starting pit 2 in direction towards drilling rig 4.
  • Drilling rig 4 by -means of drilling string which consists of drill pipe string 5 and compaction fluted backreamer 10 which backreams pilot hole and which pulls back individual pipe sections 3 into borehole 17 step by step.
  • Pipe line consisting of pipe sections 3 from which the first pipe section is firmly connected with pulling pin 12 with pulling intermediate pipe 9 which is firmly connected with pulling head L5 is pulled by means of pulling intermediate pipe 9 and pulling chain 7 in the interval of operation trench 1 and starting pit 2 in vhich the ends of the first and the last pipe section 3 will be provided with fittings and ttie whole interval of the pulled-in pipe line is checked at the end by pressure test for tightness of socket coupling.
  • the pilot drilling head crawls up in operation trench I namely at its bottom. Pilot drilling head is dismantled and instead of it compaction fluted backreamer 10 is screwed on the end of drill pipe string 5.
  • Figure 2 illustrates the position of drill pipe string 5, compaction fluted backreamer 10.
  • pulling equipment consisting of swivel 11, pulling head 15 with pulling intermediate pipe 9, pulling pin 12_ and then continue 1 st pipe section 3 and 2 nd pipe section 3 .
  • Inside pipe sections 3 passes through pulling chain 7 one end of which is firmly fixed in suspension eye 16 of pulling head 15_ and the second end is fixed in chain stretcher 8.
  • Individual sections of pulling chain 7 are connected by means of chain shackles.
  • Pipe sections 3 of ductile cast iron are located in the neighbourhood of operation trench 1. All pipe sections 3 are laid into the trench with their spigots in direction towards the drilling rig.
  • Swivel JJ is connected by means of shackle with pulling hanger 13 passing through top of pulling head L5.
  • suspension eye 16 On the other side of pulling hanger 13 under top of pulling head 15 inside pulling intermediate pipe 9 is situated suspension eye 16 which pulling chain 7 is suspended on.
  • Pulling hanger 13 is provided with supporting plate JL4 which serves for supporting pulling hanger 3 on top of pulling head JA 1 st pipe section 3 is secured in pulling intermediate pipe 9 by pulling pin Y
  • This is provided on one end with hexagonal countersink head and passes diametrically through wall of pulling intermediate pipe 9 through spigot of 1 st pipe section 3 and is screwed in wall of pulling intermediate pipe 9 on opposite end.
  • FIG. 4 represents coupling of socket and spigot of pipe sections 3 of ductile iron and following pulling-in of coupled sections into borehole Y
  • Socket end of this pipe section is located in U-beam 6 which is fixed on wooden suspension prisms 18 .
  • U-beam 6 serves during assembling individual pipe sections for accurate coupling and axial alignment of both pipe sections 3 into required direction and slope of pulled-in pipe line.
  • This is another characteristic element of the invention.
  • another pipe section 3 is positioned in U-beam 6. Both pipe sections are pulled through with pulling chain 7 which is connected by means of chain shackle of "hammerlock" type. Pipe section are coupled by means of thrust of chain stretcher 8 onto socket of right pipe section. Thrust plate 19 and chain stretcher 8 are sat over socket end of coupled pipe section 3.
  • End of pulling chain 7 is pulled through a set of pulleys and is fastened in the last pulley connected firmly with hydraulic piston 20 of chain stretcher 8 and applied tension of pulling chain 7 presses spigot of pipe section 3 into socket of previous pipe section 3 up to the mark. In this position the place of sealing ring is checked and jaws of Ni lock bite into smooth end of pipe section 3. Assembly of pipe sections 3_coupled in this way is pulled-in into borehole 17 in direction towards drilling rig 4. Socket of the last pipe section 3 "runs" in U-beam 6 and in this way axial alignment of individual pipe sections one to each other is secured.
  • FIG. 5 represents a scheme of chain stretcher 8 situated on socket end of pipe section 3_, In this Figure the way of pushing smooth end of pipe section 3 into socket of previous pipe section 3 is evident.
  • Conpled pipe section 3 is positioned in U-beam 6.
  • Position 19 shows thrust plate whic-h hydraulically controlled chain stretcher 8 is supported on.
  • Position 21 illustrates point of hydraulic hoses coimection.
  • 1 st pipe section of the pipe line is situated in pulling intermediate pipe 9.
  • Pulling pin 12 locks 1 st pipe section against pulling out from pulling intermediate pipe 9.
  • the integrity of pipe line assembled of pipe sections 3 is provided by pullmg chain 7 passing inside through all pipe sections 3 from suspension eye 16 of pullmg hanger 13 up to chain stretcher 8 installed on socket of the last pipe section 3.
  • This safeguard of pulled pipe line eliminates practically completely any uncoupling of pipe sections or their loss in the borehole.
  • Axial force which is produced by the drilling rig 4 during pulling-in pipe sections 3 is distributed into pulling tension of pulling pin 12 and into pressure from chain stretcher j
  • Pipe line assembled from pipe sections 3 is pulled-in in this way up to starting pit 2 where it is provided with connecting and distribution fittings.
  • Pulling chain 7 is pulled out at the end from pipe line in its whole length. Pipe line is pressure tested for tightness of socket coupling and then it is handed over to the user.
  • Coupling of socket pipe sections for trenchless laying of piping of ductile iron can be utilized everywhere where there are problems with occupation of areas for building activity, e.g. in town development with, dense car and tram traffic and where there are high requirements upon minimum dust nuisance and ecology of life environment e.g. in urban settlement complexes, in the neighbourhood of shopping centres, etc.
  • Pipe lines of ductile iron can be laid even as gravity sewer systems of long service life. Pipe lines of ductile iron are generally preferred to plastic or steel piping nowadays for supplying the population with drinking water. E.g. Waterworks and Sewer Plants in the respective region of our republic may become one of the leading operating owners of these piping networks.

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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)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Earth Drilling (AREA)

Abstract

La présente invention a trait à un procédé de raccordement qui consiste en un procédé dans lequel suite au creusement d'un trou de départ et de forage de tranchée d'opération et d'alésage consécutif de puits de forage pilote qui est exécuté en combinaison avec la traction simultanée de sections de canalisation lors de la génération d'une force coaxiale par des opérations simultanées de l'appareil de forage et la traction de la tête de forage avec la canalisation dans le puits de forage et où la force générée par un mouvement de piston d'un tendeur de chaîne hydraulique exerce une poussée et assure le scellement final de la connexion de tête de traction avec la canalisation. L'invention a également trait à un équipement constitué d'un appareil de forage (4) avec une tête de traction (15) par le sommet de laquelle traverse un support de traction (13) qui est muni depuis la face intérieure de la tête de traction (15) d'une oeillère de suspension (16) à laquelle la chaîne de traction (7) traversant les sections de canalisation tractées est reliée et qui est couplée à un piston (20) d'un tendeur de chaîne hydraulique (8) qui est supporté à travers une plaque de poussée (19) sur le collet de l'ultime section de canalisation tractée (3).
PCT/CZ2005/000032 2004-04-08 2005-04-06 Equipement et procede de raccordement de sections de canalisation a collet pour la pose de canalisation sans creusement WO2005098195A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ2004467A CZ295866B6 (cs) 2004-04-08 2004-04-08 Zařízení a způsob spojování hrdlových trubních sekcí při bezvýkopové pokládce
CZPV2004-467 2004-04-08

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WO2005098195A1 true WO2005098195A1 (fr) 2005-10-20

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WO (1) WO2005098195A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10550961B2 (en) 2017-08-11 2020-02-04 Joseph Timothy Nippes Lead service water pipe line removal apparatus and method
CN112923129A (zh) * 2021-01-21 2021-06-08 四川石油天然气建设工程有限责任公司 油气管道对接式拖管施工工艺及系统

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2074003A (en) * 1935-01-21 1937-03-16 Templeton Kenly & Co Ltd Method of culverting embankments
GB2164718A (en) * 1984-09-19 1986-03-26 Ian Roland Yarnell Mole
DE4403267C1 (de) * 1994-02-03 1995-05-24 Buderus Guss Gmbh Verfahren zum unterirdischen Verlegen von Muffenrohren, Muffenrohr zur Durchführung des Verfahrens und Verwendung derartiger Muffenrohre bei dem Verfahren
US5895176A (en) * 1996-03-02 1999-04-20 Tracto-Technik Paul Schmidt Spezialmaschinen Device for connecting a pipeline conduit to a ground-boring machine
US5961252A (en) * 1997-10-20 1999-10-05 Digital Control, Inc. Underground utility installation tension monitoring arrangement and method
US6109832A (en) * 1998-04-02 2000-08-29 Lincoln; David A. Ram burster and method for installing tubular casing underground
US20030017008A1 (en) * 2001-07-19 2003-01-23 Robinson Gerald M. Apparatus for trenchless underground pipe replacement
US6682264B1 (en) * 2002-02-26 2004-01-27 Ina Acquisition Corp. Method of accurate trenchless installation of underground pipe
GB2391601A (en) * 2001-05-25 2004-02-11 Tracto Technik Cable pull device for pulling in pipes

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2074003A (en) * 1935-01-21 1937-03-16 Templeton Kenly & Co Ltd Method of culverting embankments
GB2164718A (en) * 1984-09-19 1986-03-26 Ian Roland Yarnell Mole
DE4403267C1 (de) * 1994-02-03 1995-05-24 Buderus Guss Gmbh Verfahren zum unterirdischen Verlegen von Muffenrohren, Muffenrohr zur Durchführung des Verfahrens und Verwendung derartiger Muffenrohre bei dem Verfahren
US5895176A (en) * 1996-03-02 1999-04-20 Tracto-Technik Paul Schmidt Spezialmaschinen Device for connecting a pipeline conduit to a ground-boring machine
US5961252A (en) * 1997-10-20 1999-10-05 Digital Control, Inc. Underground utility installation tension monitoring arrangement and method
US6109832A (en) * 1998-04-02 2000-08-29 Lincoln; David A. Ram burster and method for installing tubular casing underground
GB2391601A (en) * 2001-05-25 2004-02-11 Tracto Technik Cable pull device for pulling in pipes
US20030017008A1 (en) * 2001-07-19 2003-01-23 Robinson Gerald M. Apparatus for trenchless underground pipe replacement
US6682264B1 (en) * 2002-02-26 2004-01-27 Ina Acquisition Corp. Method of accurate trenchless installation of underground pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10550961B2 (en) 2017-08-11 2020-02-04 Joseph Timothy Nippes Lead service water pipe line removal apparatus and method
CN112923129A (zh) * 2021-01-21 2021-06-08 四川石油天然气建设工程有限责任公司 油气管道对接式拖管施工工艺及系统

Also Published As

Publication number Publication date
CZ2004467A3 (cs) 2005-02-16
CZ295866B6 (cs) 2005-11-16

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