DE3214033A1 - Method of installing pipe structures underground and apparatus for carrying out the method - Google Patents

Abstract

In the production of pipe structures of small diameter in a closed type of construction which are no longer accessible through walking or crawling, accurate control and the removal of obstacles present problems. The method according to the invention provides for pipe structures of this type to be installed by driving an auxiliary pipe. An auxiliary pipe (1) having a cross-section accessible at least through crawling is driven from a starting shaft (2) to the next shaft (4), the clear cross-section (5) of the auxiliary pipe enclosing all cross-sections (6, 7) of the final pipe structures. After the target shaft (4) is reached, the final pipe structures (6, 7) are installed in their desired position inside the auxiliary pipe (1). The auxiliary pipe (1) can then be pulled back into the starting shaft (2) and recovered. <IMAGE>

Description

32U033

Method for the underground installation of pipe structures and devices for carrying out the method

The invention relates to a method for underground Installation of Rohrbauwerkeii - tunnels or lines with small, mainly no longer creepable cross-sections.

Increasingly, it is necessary to build small diameter ceilings in a closed construction. In the production of such small tunnels in diameters that can no longer be walked on or crawled over, the exact control and the removal of obstacles pose problems - ·; ? Ό cr surface Ia <r Tr ^ i ^ olsgt and oesoi ^';:: -;. ^ Ϊ́ VDD ~ * claij: ra tunnel must be abandoned. It is also known to lay pipelines with inaccessible diameters in a previously created larger tunnel. The disadvantage of this solution is the large amount of space that remains in the ground. "It is also known that for the production of pipe structures with non-accessible through-

• -0 knives a pilot hole in the later tunnel axis carried out; Lind became in a two-step step the pipe dos final expansion with the help of the drill rod or some other pulling device at the same time Use of an extension drilling head retracted

'-5 gen. The disadvantages of this method are there.

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• 32U033

that the iiolir beir. Dinzielion highly charged wxi-d Lind Nevertheless, a full An.sch.lui3 on the ground is not guaranteed can earth. .

The object of the invention was to develop a method that allows in an economical "way, Pipe structures with small, primarily with no more " kriech.ba.rem cross-section, singly or in bundles underground and for this purpose, for the pipes remaining in the ground, "materials with certain specific

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chose properties - e.g. 3, plastic pipes with durability use against corrosion attack from inside and outside to be able to, although they have an optimal suitability against the stresses of the state of use, the loads when used in a conventional tunneling method but had not grown.

The task is carried out by the in the identifying part of the Claim 1 described method solved.

The method according to the invention allows pipes with any diameter and any cross-sectional shape and with the material adapted to the given load to be brought into the subsoil in a closed construction. Possibility of free! -Fahl <3 _{it is} expedient Durclunessers for the auxiliary pipe for repeated use

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Auxiliary pipe is only dec "absolutely necessary in the street raucation Space for the! (Ear structures claimed.

The crawlable auxiliary pipe allows, if necessary, manually To remove obstacles on site, to carry out repairs to the cutting head and manipulations to the control.

Appropriate refinements of the invention are shown in Described subclaims. Through the described therein Targeted selection and treatment of the filling material can be the density, the corrosion protection and the load capacity of the final I pipe structures are improved.

The method according to the invention is illustrated by the figures and 2 explained.

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α arc Ii omen / oi-cri s esa bscimi υ with auxiliary pipe z -.- ischen two control shafts, namely at a point in time during the drawing back of the auxiliary pipe,

Fig. 2 shows the associated cross section through the auxiliary tube immediately in front of the mandrel closure cover.

The propulsion of the auxiliary pipe 1 was carried out from the starting shaft 2 via dio Vortrir-bss crcc'co 3 to the target schach.- 4. Who lent '; ο Cuoi'sclmit b 5 of the auxiliary pipe encloses in the example shown two final © liohr bauwprke 6,7. The auxiliary pipe is through to its ground

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the lid lock 8 closed. The Declcelverschluß has passages 9, which are sealed in the example with stuffing boxes and slide through which the pipe structures 6.7 when retracting. The penetration opening of the auxiliary pipe 1 in the target shaft h is tightly closed by the closure 10, which is also provided with sealed ducts 11 for the liohre 6,7. The cavity 12 created when the auxiliary pipe 1 is dismantled is continuously pressed with filler material through the press line 13.

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Claims (1)

Claims 1. Procedure for the underground installation of sohr structures - Tunnels or lines - with small, mainly no longer creepable cross-sections, characterized by the following individual steps: 1. An auxiliary roller blind (-1), primarily a steel tube, with at least a crawlable cross-section is from a starting shaft (2) out to the length of a normal Control section (3) (usually approx. 6o m) to the night shaft ('[-) according to one of the well-known methods driven forward, wherein the propulsion axis is chosen so that the clear cross section (5) of the auxiliary pipe all Enclosing cross-sections (6, 7) of the final pipe structures. 2. After driving through the route section (3) the cutting head of the auxiliary pipe jacking is removed in the target shaft (k) , the final itohr structures (6, 7) are installed in their intended position within the auxiliary pipe (1) and the auxiliary pipe (1) is fitted with a the cap (S) which includes said passages (9) in which tightly the final Sohrbauwerke and are slidably held, Hach retracting the auxiliary pipe (1) by a small amount from the target shaft {k) is the target shaft (k) at the ¹ opening of the auxiliary pipe (i) also a tight seal (Iu), γ! Ργ ei i ';' .: Through l'iili..run _; ⁿ ; on (I l) Γα. "the Kuhrbuu- ■ works (6, 7) on ve is t. BATH 32H033 3. The auxiliary pipe (1) is attached to the final Iiohrbauwerken sliding along into the S ^ arrschacht (,?) withdrawn, regained there and dismantled. 'l ·. The one released by the auxiliary pipe (l) when dismantling underground cavity (12) is through a 7erpreßleitung 03) continuously with; suitable Filling material pressed. 2. The method according to claim 1, characterized ^ e kenn draws that Sohrbauwerke (6,7) of any cross-sectional shape are usable. 3. The method according to claims 1, 2, characterized in that that the filling material of the cavity (12) between the pipe structures (6,7) and the An anti-corrosion agent is added to the ground, das dio Au:?. onkorrosioa: .ui dem or den Prrvhik-robLr ^ n prevented. '+. Method according to claims 1, 2, d a d u r e h, ^ 'ο characterize t that filler material! of the cavity (12) between the product pipes and dc2m soil a sealant is added. 5. The method according to claims 1, 2, characterized in that that cement or chemicals are added to the filling material of the cavity (12), which cause a solidification. 6. The method according to claims 1 to 5, characterized ge indicate that with sufficient depth BATH ORIGINAL location of the structure of the VerproiMruck for the filling material is chosen so high that the retraction of the auxiliary tube (i) all or at least part of the force required through, the pressure on the cap (8) is generated when pumping in the grout. 7. Steel pipe for the auxiliary pipe lead »for implementation of the method according to claim 1, characterized in that E i chne t that the connections between the steel pipes are essentially pressure-resistant Connections are formed and a separate tension member is used for the retraction of the auxiliary pipe (1) will. 8. Steel pipe according to claim 7? characterized, that instead of a closed steel tube composed of at least two segments tube for r; Ii 1 '■ "'. 'NiQnco ·; verton, as-ron ri'Hmeoeneii'ai'J Aciise aea .1HS3- pipes (1) run ^{and are} joined together by suitable connections, for example screw connections or gels.