RU2116546C1 - Replacement of defective pipe line partially or fully filled with soil without digging-out trench - Google Patents

Replacement of defective pipe line partially or fully filled with soil without digging-out trench Download PDF

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Publication number
RU2116546C1
RU2116546C1 RU96103580A RU96103580A RU2116546C1 RU 2116546 C1 RU2116546 C1 RU 2116546C1 RU 96103580 A RU96103580 A RU 96103580A RU 96103580 A RU96103580 A RU 96103580A RU 2116546 C1 RU2116546 C1 RU 2116546C1
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RU
Russia
Prior art keywords
soil
well
pipe line
old pipeline
replacement
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RU96103580A
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Russian (ru)
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RU96103580A (en
Original Assignee
Григоращенко Владимир Александрович
Тупицын Сергей Константинович
Плавских Владимир Дмитриевич
Харькин Владислав Альбертович
Жарков Евгений Григорьевич
Савельев Александр Сергеевич
Каменский Вениамин Викторович
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Application filed by Григоращенко Владимир Александрович, Тупицын Сергей Константинович, Плавских Владимир Дмитриевич, Харькин Владислав Альбертович, Жарков Евгений Григорьевич, Савельев Александр Сергеевич, Каменский Вениамин Викторович filed Critical Григоращенко Владимир Александрович
Priority to RU96103580A priority Critical patent/RU2116546C1/en
Publication of RU96103580A publication Critical patent/RU96103580A/en
Application granted granted Critical
Publication of RU2116546C1 publication Critical patent/RU2116546C1/en

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Abstract

FIELD: replacement of defective pipes lines without digging-out trenches. SUBSTANCE: first, well is made by means of self-moving end-piece compacting the soil; then rope is passed through this well; ends of rope are secured on winch and on working member. Rope is pulled through defective pipe line breaking it and forming well into which new pipe line is passed. EFFECT: enhanced reliability and accuracy of laying the pipe line. 4 cl, 3 dwg

Description

 The invention relates to construction production and can be used for trenchless replacement of underground pipelines in the repair and reconstruction of underground utilities.
 Known methods for replacing pipelines and devices for their implementation (RF patent N 2003918, USA N 4.507.019, German patent N 4014775) provide for replacing an old pipeline by destroying it with a working body, pushing fragments into the surrounding soil and tightening a new pipe. The design of the working body can be very different, but all of them are guided through the old pipeline using a traction cable, the method of laying of which is not described. These methods have the significant drawback that when replacing collapsed and partially filled pipelines, their application requires special preparatory work, since methods and means are not provided that provide a solution to this problem.
 There is a known method of replacing an old pipeline, including holding a traction cable through it, securing a working member thereon, destroying the old pipeline and then tightening the new pipe. The traction cable is conducted through the old pipeline by the Cobra device, which is an elastic cable wound around a drum. However, in the case of an extended or compacted fracture site, the cable cannot be practically missed; as a result, the use of earthmoving equipment is required. This greatly reduces the scope of the trenchless method of replacing the pipeline.
 The problem that the invention solves is to expand the technological capabilities of the method by developing a guaranteed method for passing the traction cable through a pipeline partially or completely filled with soil.
 The problem is solved in that in the method of trenchless replacement of an old pipeline partially or completely filled with soil, including passing a traction cable through it, eliminating an old pipeline by a working body, tightening a new pipe, passing a traction cable by means of self-propelled drilling in an old well pipeline soil compacting tip.
 It is advisable that the diameter of the hole to be drilled does not exceed 0.2-0.3 of the diameter of the old pipeline, since with a larger diameter of the well it is possible to jam the tip in the ground, since the old pipeline limits the possibility of compaction. This improves reliability.
 It is advisable to use a pneumatic impact mechanism as a soil compaction tip, which allows the well to pass from the well without breaking the soil, that is, to increase productivity.
 It is advisable to drill a well using a casing to ensure air exhaust when working in an old pipeline filled with moistened soil, that is, to increase the reliability of operation.
 In FIG. 1 shows in longitudinal section the implementation of the transmission of a traction cable in an old pipeline by driving a well through it using a self-propelled soil compaction tip; in FIG. 2 - elimination of the old pipeline by the working body and tightening of the new pipe; in FIG. 3 - transmission cable using casing.
 An example implementation of the proposed method.
 It is required to replace a section of an old pipeline with a diameter of 150 mm with a new plastic one with a diameter of 180 mm. The distance between the wells is 40 m. The old pipeline is partially silted and clogged with soil.
 From the start well 1 (Fig. 1), the pneumatic impact mechanism 2 is supplied with compressed air through a flexible hose 3 into the old pipeline 4. The length of the pneumatic impact mechanism 2 does not exceed 700 mm — the minimum size of existing wells. The diameter of the pneumatic impact mechanism is 42 mm, which is less than 0.3 of the diameter of the old pipe. A traction cable 5 is attached to the pneumatic impact mechanism.
 The pneumatic impact mechanism moves along the old pipe 4, compacting the soil 6 located in the old pipe 4 to its walls and forming a well 7 behind it, in which the traction cable 5 and the flexible hose 3 are located.
 After the pneumatic impact mechanism 2 exits into the intake well 7, it is disconnected from the flexible hose 3 and removed to the surface. A flexible hose 3 is removed from the well 6. One end of the traction cable 5 (Fig. 2) is connected to the winch, and the other to the working body 8. The working body and the winch are put into operation. Moving from well to well, the working element destroys the old pipeline, rams its fragments into the walls and forms a well 9 with a diameter of 220 mm behind it, into which a new pipe 10 with a diameter of 180 mm connected to the working body 8 is pulled. Well drilling using a casing pipe while working in an old pipeline filled with moistened soil is carried out similarly to the described method, only casing pipe 11, consisting of sections connected in series, is attached to the pneumatic hammer mechanism 2 (Fig. 3). The space between the flexible hose 3 and the walls of the casing 11 is used to exhaust the exhaust air from the pneumatic impact mechanism. After exiting into the receiving well 7 of the pneumatic impact mechanism 2, it is disconnected from the casing 11, the flexible hose 3 and the traction cable 5 and removed to the surface. The casing 11 is also removed from the old pipeline, and the traction cable is used for further work.

Claims (4)

 1. The method of trenchless replacement of an old pipeline, partially or completely filled with soil, including passing a cable through it, removing the old pipeline with a working body, tightening a new pipe, characterized in that the traction cable is passed by driving in the old pipeline of the well using self-propelled sealing soil tip.
 2. The method according to claim 1, characterized in that the diameter of the well does not exceed 0.2 - 0.3 of the diameter of the old pipeline.
 3. The method according to claim 1, characterized in that the pneumatic impact mechanism is used as a soil compacting tip.
 4. The method according to PP. 1 and 3, characterized in that the sinking of the well is carried out using a casing.
RU96103580A 1996-02-23 1996-02-23 Replacement of defective pipe line partially or fully filled with soil without digging-out trench RU2116546C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU96103580A RU2116546C1 (en) 1996-02-23 1996-02-23 Replacement of defective pipe line partially or fully filled with soil without digging-out trench

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU96103580A RU2116546C1 (en) 1996-02-23 1996-02-23 Replacement of defective pipe line partially or fully filled with soil without digging-out trench

Publications (2)

Publication Number Publication Date
RU96103580A RU96103580A (en) 1998-04-27
RU2116546C1 true RU2116546C1 (en) 1998-07-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU96103580A RU2116546C1 (en) 1996-02-23 1996-02-23 Replacement of defective pipe line partially or fully filled with soil without digging-out trench

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RU (1) RU2116546C1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Проспект "TRACTO-TECHNIK", DE, 1994, с.36-37. *

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MM4A The patent is invalid due to non-payment of fees

Effective date: 20090224