EP0725205A1 - Einrichtung und Verfahren zur Wasserzulauf-Absperrung in einem unterirdischen Rohrverlegungs-Werkgebiet - Google Patents

Einrichtung und Verfahren zur Wasserzulauf-Absperrung in einem unterirdischen Rohrverlegungs-Werkgebiet Download PDF

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Publication number
EP0725205A1
EP0725205A1 EP95113016A EP95113016A EP0725205A1 EP 0725205 A1 EP0725205 A1 EP 0725205A1 EP 95113016 A EP95113016 A EP 95113016A EP 95113016 A EP95113016 A EP 95113016A EP 0725205 A1 EP0725205 A1 EP 0725205A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
liner
main body
opening
piping
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.)
Withdrawn
Application number
EP95113016A
Other languages
English (en)
French (fr)
Inventor
Norizumi 131 Higashi Akebono-Cho Hadaka
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.)
HOUSHOU CO Ltd
Original Assignee
HOUSHOU CO Ltd
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 HOUSHOU CO Ltd filed Critical HOUSHOU CO Ltd
Publication of EP0725205A1 publication Critical patent/EP0725205A1/de
Withdrawn legal-status Critical Current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 present invention relates to sealing devices and sealing method and, more particularly, to devices and method used for sealing an opening in an underground work space wherein an operation for laying underground piping is being carried out to prevent underground source water from flowing into the work space, underground piping construction in which an oil-hydraulic propulsion machine for propelling a horizontal pipe line is arranged in a vertical excavated hole being exemplary of use of the devices and method.
  • a vertical hole for installing a propulsion machine is excavated.
  • a metal liner plate or casing is then arranged on walls of the vertical hole, and the propulsion machine is arranged at a prescribed position in the vertical hole to define a work area.
  • a hole, generally of circular configuration is cut in a wall of the liner so pipe can be propelled therethrough in a horizontal course through the underground region exterior of the work area.
  • a small-diameter lead will first be propelled blindly into the area where piping is planned.
  • This lead pipe guides an auger screw and the piping. Thereafter, the service pipe line will be propelled, all thus far described being known in the art.
  • Another method of laying down piping involves propelling an auger screw and piping without the use of a lead pipe. The axis of the auger screw is propelled blindly just as in a similar manner as a guide screw.
  • Another object is to provide devices that can become a permanent part of a manhole structure to insure that such space will be kept water free.
  • the work area hole in which a pipe laying operation is being carried out and has the pass through opening by which pipe lengths being laid are passed through to the pipe line course is sealed against water inflow through that opening with a seal unit encircling the pipe exterior to seal it.
  • This seal unit in turn is inserted in a sleeve fixed to the inside of a hole liner and passing radially therefrom a distance from the liner, the degree of watertightness of the seals being effective to prevent water inflow to the work area.
  • a sealing assembly for sealing a pipe pass through opening cut in an excavated hole liner so that piping can be propelled from within the excavated hole through the pipe pass through opening in a piping course, such sealing being to prevent water incursion to a liner enclosed work area from an underground water source exteriorly of the work area.
  • the sealing assembly comprises a seal part having a hollow elongated main body with openings at opposite body ends, means for fixing the position of said main body end openings relative to said pass through opening when said main body has been inserted through the pass through opening with one of the body ends in communication with the work area and an opposite end in communication with the underground water source.
  • Means carried on the main body extend radially relatively inwardly therefrom and are operable to tightly conformably engage an external surface of a pipe passing through said seal part thereby to establish a sealing condition around said pipe external surface effective to obstruct a passage of any water present in said underground water source to said work area.
  • a sealing assembly for sealing a pipe pass through opening cut in an excavated hole liner so that piping can be propelled from a liner enclosed work area through the pipe pass through opening in a piping course, the sealing being to prevent water incursion to the work area from an underground water source exteriorly of the work area.
  • the sealing assembly comprises a sleeve having a radially outwardly directed flange at an end of the sleeve, the sleeve being insertable into the pass through opening from within the work area to engage the said end flange against portions of the liner adjacent the pass through opening.
  • a seal unit including a hollow cylindrical main body, a radially outwardly directed flange carried at an end of said main body is provided. A section of said main body adjacent an opposite main body end tapers radially inwardly toward the main body opposite end.
  • the seal unit is insertable, tapered end first in said sleeve with the tapered main body with the main body flange end in following position so said flange can be caused to engage with a radially inwardly directed abutment or stop on the sleeve thereby to effect an insertion stopping of the seal unit.
  • the said opposite main body end is in communication with the underground water source and the flange carrying end of the main body is in communication with the work area
  • the ring of flexible waterproof packing material carried in said sleeve having a normal ring inner dimension smaller than an external dimension of the seal unit main body so that when the seal unit is inserted in the sleeve, the ring of waterproof material deforms in close conforming ring course encircling contact with the external surface of the main body effective to obstruct a passage of water from one to an opposite side of the encircling ring course.
  • Seal means are carried internally in the main body and extend radially inwardly therein and engage tightly conformably with an external surface of a pipe passing centrally through the seal unit to establish a seal condition about the external surface of the pipe effective to obstruct a passage of any water present in said underground water source along said pipe external surface to said work area.
  • a method for sealing a pipe pass through opening cut in an excavated hole liner so that piping can be propelled from a liner enclosed work area through the pipe pass through opening in a piping course without there occurring water incursion to the work area from an underground water source exteriorly of the work area.
  • This method comprises inserting a sleeve having a radially outwardly directed annular flange at a sleeve end and having a flange diameter greater than a largest pass through opening dimension, outwardly from the work area through the pass through opening until the annular flange engages liner surface portions adjacent the pass through opening.
  • the sleeve further has a diametrically disposed barrier of flexible material therein blocking communication between the sleeve flange end and an opposite sleeve end.
  • a ring of a flexible waterproof packing material is carried in the sleeve proximal said sleeve opposite end, this packing material having a normal ring inner dimension of a predetermined value.
  • the sleeve flange is watertightly fixedly secured to the liner surface portions, for example by weldment.
  • An opening is cut in the flexible material in a size slightly smaller than an external dimension of piping to be propelled through the liner opening so that when said piping passes through the said liner opening, the flexible material of the barrier tightly sealingly engages external surface of the piping to prevent any water passage from the water source to the liner space.
  • a seal unit which includes a hollow cylindrical main body, a radially outwardly directed flange carried at an end of the body, and a tapered section at an opposite body end is then inserted into the sleeve tapered section first and concentrically encircling piping present in the sleeve and until the flange on the seal unit body engages a stop on the sleeve.
  • the seal unit also carries an internal packing ring of flexible material which tightly sealingly engages the external surface of the piping to effect watertight sealing therebetween.
  • the seal unit body flange is then watertightly secured to the said stop of the sleeve as by welding.
  • the present invention is intended particularly but not exclusively for use in underground piping construction wherein a small-diameter lead pipe is propelled preliminary to lay down of service piping.
  • the following is a summary description of this type of underground piping construction.
  • a vertical hole 2 for installing a propulsion machine 1 is excavated incident the work of laying a pipe line.
  • the walls of vertical hole 2 are covered with metal liner plates or casing 3 (hereinafter, the description of the embodiments will describe only liner plates). It is understood that the lined hole constitutes a work area.
  • the liner prevents surrounding dirt from falling into vertical hole 2 and prevents silt with high water content from flowing in.
  • a circular hole 4 is cut in liner plate 3 at a position where the service piping is to be installed.
  • a lead pipe 5 will be guided blindly into the earth from hole 4 to establish a properly aligned pipe course along which service piping 6 is to be propelled.
  • a lead pipe may be dispensed with in favor of direct installation of the service pipe where assured guidance is not a problem.
  • Lead pipe 5 or piping 6 is propelled up to an already laid-down pipe 7, which, e.g., could be a sewer main.
  • the pipe line will be directed to a destination hole 8, arranged in a similar manner as vertical hole 2.
  • circular hole 4 is arranged to be large enough so that pipe 6 can adequately pass through it while being propelled.
  • the orientation of lead pipe 5 or piping 6 should be toward laid-down pipe 7 or destination hole 8. Piping construction is complete when the piping is propelled up to the destination, laid-down pipe 7 or destination hole 8.
  • propulsion machine 1 propels lead pipe 5 or piping 6 and comprises a base 10, gear rails 11 arranged parallel to each other, sliding members 12a, 12b, which slide along the gear rails, and a main unit 13 of the propulsion machine connected to one of the sliding members.
  • An oil hydraulic cylinder 14 is arranged between sliding members 12a, 12b. Hydraulic cylinder 14 is connected via a hose 16 to an oil hydraulic pressure supply device 15 (Fig. 1). By adjusting oil flow, the interval between sliding members 12a, 12b can be adjusted.
  • a support member 17 is arranged on propulsion machine main unit 13 so that it supports piping 6.
  • Piping 6 is propelled according to the movement of propulsion machine main unit 13.
  • a transit 18 is arranged on the opposite side of supporting member 17 so that the position of the fore tip end of the lead pipe can be measured via the inside of hollow, cylindrical lead pipe 5. This allows confirmation that lead pipe 5 is moving in a linear fashion.
  • a direction correcting means 19 is connected to the tip of lead pipe 5 so that the orientation of the propulsion of lead pipe 5 can be corrected. By checking the orientation of the propulsion using the transit and by operating the direction correcting means at the tip, it is possible to control lead pipe 5 direction to the intended destination position.
  • a water-stopping plug can be used to seal the tip of piping 6, thus preventing the earth from flowing into piping 6.
  • screw 9 would not be used.
  • lead pipe 5 described above would not be used.
  • Direction correcting means 19 would be connected to the tip of screw 9 and piping 6 would be propelled while the direction correction is performed. The procedure of removing lead pipes 5 is not required as in the case when the piping is to reach destination hole 8, and screw 9 is brought back to vertical hole 2 after the propulsion of piping 6.
  • the present invention provides devices for use in underground piping construction as described above with a device to prevent water and earth from flowing into vertical hole 2 from hole 4 arranged On liner plate 3 as well as a method for achieving the same.
  • the water-stopping device of this embodiment comprises a first water-stopping means or sleeve, and a second water-stopping means or seal unit.
  • the first water-stopping means 20 includes has a main unit 21 or sleeve of generally cylindrical shape whose outer diameter is smaller than the diameter of hole 4 so that it can pass through hole 4.
  • a ring-shaped connecting section 23 is arranged on a rim 22 on one end of main unit or sleeve 21 of the first water-stopping means. Connecting section 23 is arranged so that it projects outward radially. Connecting section 23 serves to connect liner plate 3 (Fig. 1), which is arranged in the inside surface of the vertical hole excavated in a circular cross-section, and first water-stopping means main unit 20.
  • a ring-shaped support plate 25 projecting inward radially of the sleeve is connected thereto and is arranged on an end rim 24 at the end opposite from connecting section 23 on first water-stopping means main unit 21.
  • a ring-shaped fixing plate 26 is connected opposite to support plate 25 with a bolt 27 and a nut 28.
  • Ring-shaped rubber packing 29 is interposed between support plate 25 and fixing plate 26 and is supported by bolt 27, which passes through it.
  • Reinforcement packing elements 30, 31 are supported in a similar manner by bolt 28.
  • One of these two, reinforcement packing 30 has a ring shape and has an inner diameter that matches or is slightly smaller than the outer diameter of piping 6 (Fig. 1).
  • the other packing, reinforcement packing 31, is formed in a circular plate shape.
  • Both reinforcement packing 30, 31 are thin enough to be cut easily with a blade. During construction, these are cut bit by bit. Rubber packing 29 and reinforcement packing 30, 31 are all squeezed tightly between support plate 25 and fixing plate 26 by bolt 27 and nut 28.
  • second water-stopping means or seal unit 40 has a main unit 41 formed in a cylindrical shape. Its outer diameter is slightly smaller than the inner diameter of support plate 25 (Fig. 3) arranged on first water-stopping means 20, and is larger than the inner diameter of rubber packing 29 (Fig. 3), so that it can be fit into first water-stopping means 20.
  • a fitting fore section or tip 42 of second water-stopping means main unit 41 has a tapered section 43 that is connected to main unit 41.
  • Tapered section 43 is hollow and of conical or truncated conical and has an outer surface that is formed with a sharp taper. Tapered section 43 is made to fit easily into the first water-stopping means sleeve 20.
  • Connecting section 43 projects radially outward at opposite end rim 44.
  • the outer diameter of connecting section 43 is formed slightly larger than the inner diameter of support plate 25 (Fig. 3) of first water-stopping means 20.
  • Ring-shaped support plate 46 projects inward radially at an appropriate position inside second water-stopping means main unit 40.
  • a pressure piece 47 is arranged inside tapered section 43 so that it projects radially.
  • Rubber packings 48, 49 is arranged between support plate 46 and pressure piece 47. Rubber packings 48,49 are fixed after they are positioned at the appropriate position by pushing in a ring-shaped elastic piece 50 at the gap between rubber packing 48, 49 and pressure piece 47. Rubber packings 48, 49 are pressed firmly by support plate 46 so their position is fixed.
  • first water-stopping means 20 and second water-stopping means 40 provide adequate water stoppage when second water-stopping means 40 is fit into first water-stopping means 20. Furthermore, when connecting section 45 of second water-stopping means 40 is pressed against support plate 25 of first water supporting means 20, then an open space having a diameter larger than that of piping 6 is formed inside first water-stopping means 21. This permits support member 17 (Fig. 2) of propulsion device 1 to be used in this open space, and allows the rear end of piping 6 to be pushed into a position in front of the rear end of first water-stopping means 20 (to the left in the drawing). Thus, since piping 6 does not project inward in vertical hole 2 (Fig. 1) after it has been laid down, the space in vertical hole 2 can be used effectively.
  • FIG. 6-14 the following is a description of the water-stopping method using the water-stopping device described above.
  • vertical hole 2 is excavated to install propulsion machine 1.
  • a metal liner plate 3 is arranged on the walls of the hole.
  • Hole 4 is made in liner plate 3, and this hole 4 is cut at a position corresponding to the propulsion orientation of lead pipe 5 and piping 6.
  • Planned hole B is the area where the hole is planned, and has a larger diameter than circle A, which is the area where piping 6 will pass through.
  • the injection of the chemicals solidifies the earth, thus preventing earth from flowing in even when planned hole B is opened.
  • the injection of the chemicals can be performed by injecting the chemicals over a wide area initially when vertical hole 2 is being excavated.
  • the chemicals can also be injected through a small hole that is punched in liner plate 3 when hole 4 is being made. While the earth is dried out from the drying agent, hole 4 is made by cutting away the planned hole area in liner plate 3.
  • Hole 4 is formed to pass through piping 6 (Fig. 1), and it is formed with a circular shape.
  • the center of hole 4 is arranged so that it matches the center of the axis of the piping propelled by propulsion machine 1.
  • first water-stopping means 20 is attached to hole 4. Since first water-stopping means 20 is attached so that it projects into the earth from liner plate 3, the earth that is in the area of this projection is removed before attachment. First water-stopping means 20 is attached by putting connection section 23 on main unit 21 into contact with liner plate 3 and welding the two together. Since reinforcement packing 31 is in a circular plate shape as described above, it acts as a flow block and hole 4 is kept sealed. Thus, even if the effectiveness of the chemicals injected around hole 4 decreases, earth would not flow into vertical hole 2.
  • reinforcement packing 31 is cut where lead pipe 5 will pass through, and a lead pipe propulsion hole 32 is made. At this point lead pipe propulsion hole 32 is the only section that is open.
  • lead pipe 5 is attached to propulsion machine 1, and lead pipe 5 is passed through lead pipe propulsion hole 32 and propelled blindly into the earth.
  • first water-stopping means 20 since reinforcement packing 30, 31 are pressed against the outer surface of piping 6, while rubber packing 29 is not pressed against piping 6. Thin reinforcement packing 30, 31 are pressed against piping 6 when it is propelled because it is necessary to maintain low friction with the outer surface of piping 6 while maintaining appropriate water blockage. Thus, water can not be blocked over a long period of time in this state. Therefore, second water-stopping means 40 is fitted between piping 6 and rubber packing 29.
  • second water-stopping means 40 is arranged so that tapered section 43 is oriented toward the propulsion and so that piping 6 is passed through the hollow area inside second water-stopping means main unit 41, which is cylindrical in shape.
  • second water-stopping means 41 is propelled slowly in the propulsion direction.
  • propulsion machine 1 is used for this propulsion.
  • Propulsion machine 1 is dedicated to the propulsion of lead pipe 5 and piping 6, so support member 17 (Fig. 2) is made to match the size of piping 6. Since second water-stopping means main unit 41 is larger than piping 6, it is necessary to replace the standard support member 17 (Fig. 2) with a dedicated support member 51.
  • either reinforcement packing 30, 31 are removed or ring-shaped rubber packing 29 is cut so that it forms a diameter that is larger than the inner diameter.
  • second water-stopping means 40 is propelled and is fitted inside first water-stopping means 20.
  • tapered section 42 arranged on second water-stopping means main unit 41 is able to be propelled while pushing rubber packing 29 of first water-stopping means 20 wider. This allows easy fitting of second water-stopping means 40.
  • a rear or rearmost end 6a of piping 6 projects greatly from the inside surface of liner plate 3 inward into vertical hole 2. Piping 6 is propelled so that rear end 6a of piping 6 is positioned further underground than the inner surface of liner plate 3.
  • a dedicated spacer 52 is attached between support member 17 of propulsion machine 1 and piping rear end 6a.
  • Dedicated spacer 52 is formed in a cylindrical shape and has a diameter the same size as the diameter of piping 6. The rear end of spacer 52 engages with supporting member 17 of propulsion machine 1, while the front end engages with piping 6. Therefore, when propulsion machine main unit 13 is moved forward, propulsion can take place without any contact with first water-stopping means 20 or second water-stopping means 40. This results in no projection inward into vertical hole 2 and allows free use of the space in vertical hole 2.
  • piping 6 is propelled in a fixed direction from vertical hole 2, and it is also can propel another pipe in the opposite direction.
  • the direction of propulsion machine 1 has to be reversed, but since rear end 6a of the piping (which has already been propelled) does not project into vertical hole 2, it is possible to easily change direction.

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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)
EP95113016A 1995-02-02 1995-08-18 Einrichtung und Verfahren zur Wasserzulauf-Absperrung in einem unterirdischen Rohrverlegungs-Werkgebiet Withdrawn EP0725205A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP15658/95 1995-02-02
JP1565895A JPH08210083A (ja) 1995-02-02 1995-02-02 地中配管工事における坑口止水装置及び坑口止水方法

Publications (1)

Publication Number Publication Date
EP0725205A1 true EP0725205A1 (de) 1996-08-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP95113016A Withdrawn EP0725205A1 (de) 1995-02-02 1995-08-18 Einrichtung und Verfahren zur Wasserzulauf-Absperrung in einem unterirdischen Rohrverlegungs-Werkgebiet

Country Status (3)

Country Link
EP (1) EP0725205A1 (de)
JP (1) JPH08210083A (de)
CN (1) CN1046981C (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0922851A2 (de) 1997-12-12 1999-06-16 C.R.F. Società Consortile per Azioni Flüssiggastank für eine Brennkraftmaschine, die wahlweise mit Benzin oder Flüssiggas betrieben werden kann
EP1288602A2 (de) 2001-08-30 2003-03-05 Vogel & Noot Wärmetechnik Aktiengesellschaft Paneel für Plattenheiz(kühl)körper und Verfahren zur Herstellung des Paneels
EP1471302A2 (de) 2003-03-27 2004-10-27 C.R.F. Società Consortile per Azioni Anschlussvorrichtung für durch die Behälterwand eines Treibstoffbehälters durchgeführten elektrischen Anschlüsse, insbesondere für den Flüssiggasbehälter eines motorbetriebenen Fahrzeugs

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103857165B (zh) * 2012-11-30 2016-12-21 艾默生过程控制流量技术有限公司 接地环及其制造和使用方法、电磁流量计和测量仪表
JP7389698B2 (ja) * 2020-03-30 2023-11-30 株式会社奥村組 発進口の形成方法および発進口構造

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912024A (en) * 1970-10-30 1975-10-14 Richmond Mfg Co Power train for horizontal earth boring machine
US3958648A (en) * 1974-02-18 1976-05-25 Bpa Byggproduktion Ab Drilling equipment
EP0305834A2 (de) * 1987-09-04 1989-03-08 MTS Minitunnelsysteme GmbH Verfahren und Vorrichtung zur Herstellung einer Rohrleitung in einer im Erdreich ausgebildeten Durchbohrung
EP0451683A2 (de) * 1990-04-05 1991-10-16 Kidoh Technical Ins, Co., Ltd. Antriebsvorrichtung für ein einzugrabendes Rohr

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912024A (en) * 1970-10-30 1975-10-14 Richmond Mfg Co Power train for horizontal earth boring machine
US3958648A (en) * 1974-02-18 1976-05-25 Bpa Byggproduktion Ab Drilling equipment
EP0305834A2 (de) * 1987-09-04 1989-03-08 MTS Minitunnelsysteme GmbH Verfahren und Vorrichtung zur Herstellung einer Rohrleitung in einer im Erdreich ausgebildeten Durchbohrung
EP0451683A2 (de) * 1990-04-05 1991-10-16 Kidoh Technical Ins, Co., Ltd. Antriebsvorrichtung für ein einzugrabendes Rohr

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0922851A2 (de) 1997-12-12 1999-06-16 C.R.F. Società Consortile per Azioni Flüssiggastank für eine Brennkraftmaschine, die wahlweise mit Benzin oder Flüssiggas betrieben werden kann
EP1288602A2 (de) 2001-08-30 2003-03-05 Vogel & Noot Wärmetechnik Aktiengesellschaft Paneel für Plattenheiz(kühl)körper und Verfahren zur Herstellung des Paneels
EP1471302A2 (de) 2003-03-27 2004-10-27 C.R.F. Società Consortile per Azioni Anschlussvorrichtung für durch die Behälterwand eines Treibstoffbehälters durchgeführten elektrischen Anschlüsse, insbesondere für den Flüssiggasbehälter eines motorbetriebenen Fahrzeugs

Also Published As

Publication number Publication date
CN1046981C (zh) 1999-12-01
CN1133926A (zh) 1996-10-23
JPH08210083A (ja) 1996-08-13

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