EP1904716A1 - Erstellung eines rohrstrangs im untergrund - Google Patents
Erstellung eines rohrstrangs im untergrundInfo
- Publication number
- EP1904716A1 EP1904716A1 EP06752906A EP06752906A EP1904716A1 EP 1904716 A1 EP1904716 A1 EP 1904716A1 EP 06752906 A EP06752906 A EP 06752906A EP 06752906 A EP06752906 A EP 06752906A EP 1904716 A1 EP1904716 A1 EP 1904716A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- elements
- tubing string
- pressure
- fluid
- expansion
- 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.)
- Granted
Links
- 238000010276 construction Methods 0.000 title description 2
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000003825 pressing Methods 0.000 claims abstract description 14
- 239000013013 elastic material Substances 0.000 claims abstract description 4
- 230000009969 flowable effect Effects 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 239000004035 construction material Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000004566 building material Substances 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001955 cumulated effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000009424 underpinning Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/005—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by forcing prefabricated elements through the ground, e.g. by pushing lining from an access pit
-
- 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
- E21B7/205—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes without earth removal
Definitions
- the invention relates to a method for creating a driven into the ground pipe string from frontally adjacent pipe elements in a soft, rocky and / or rocky ground, with a arranged in a press shaft or in an intermediate press station pressing device acts on the pipe string and end face in the joints the tubing arranged, fluid-filled expansion elements are used. Furthermore, the invention relates to applications of the method.
- the pipe string is pressed by successive application of tubular elements in the soil, with a controllable headpiece shows the way.
- the new pipe elements are lowered into a press shaft and propelled forward with a press device until the next pipe section can be used.
- the pipe elements have a diameter of up to several meters, a pipe string of pipe elements, for example, 1 to 4 m in diameter can reach a length of 1 to 2 km or more.
- the head of the pipe string can be removed and the necessary terminators and lines are added.
- the required pre-pressing forces increase due to the skin friction of the pipe elements.
- intermediate pressing stations or intermediate shafts can be created for other pressing devices, with which the range can be increased accordingly.
- the removed from the conveyor head earth material must be dissipated in the opposite direction to the usually approximately horizontal pipe jacking, this can be done in a conventional manner with conveyor belts, rubble cars or the like. Furthermore, in the case of appropriate soil, it is possible to produce thin-flow conveyance in closed pipes.
- the international patent application PCT / CH2005 / 000090 describes the propulsion of tubular elements for creating an elongated structure in soft, rocky and / or rocky, even monolithic underground.
- the driving force whose eccentricity with respect to the neutral axis and / or the driving direction are determined.
- fluid-filled expansion elements Between the individual Pipe elements are used frontally in the joints of the pipe string, fluid-filled expansion elements. In at least one part of the expansion elements distributed over the entire length of the pipe string, the fluid pressure and / or in part of the. Joint the deformation measured. From these parameters, the driving force. 'And their eccentricity calculated with respect to .the tube axis and the values stored and / or compared with stored standard values. According to a variant, the eccentricity is calculated and the values are converted into control commands for the pressing device and / or the individual fluid supply to or the individual fluid outflow from the expansion elements. After creating the pipe string, the elastic expansion elements remain in the joints.
- the inventor has set itself the task of making the method described above more efficient and to expand the scope.
- the object is achieved according to the invention in that the elastic expansion elements are removed from the joints after the construction of the pipe string.
- Specific and further developing embodiments of the method are the subject of dependent claims.
- elastic expansion elements starting from at least one front end of the tubing string and / or an intermediate pressing station, are removed individually or in groups, step by step
- the gradual removal of the expansion elements can be done as mentioned with respect to the pressing direction from the front or from the back, for variants also simultaneously from both sides and / or at least one intermediate press station, done.
- This beginning of the removal of expansion elements results from the skin friction, which includes the static friction and sliding friction.
- the skin friction is cumulated for all pipe elements at the front end of the pipe string and lowest in the region of the intermediate press station.
- two or more expansion elements can in each case cause a joint enlargement by increasing the pressure, again starting from one or both front ends of the pipe string or at least one intermediate press station. This is in itself more efficient than the pressure increase in each case an expansion element, but pushes quickly because of the mentioned static friction and sliding friction.
- Expansion element "springs" a displaced pipe element slightly back, however, due to the rigid body displacement of the pipe elements relative to the
- a pressure relief without permanent rigid body displacement at least one
- a filled with a fluid, but non-pressure expansion element usually has a circular cross-section of an outer diameter D 0 of a few centimeters depending on various parameters, in practice less than 10 cm.
- the expansion element is compressed to, for example, 20-50% of the original diameter D 0 .
- the propulsion remains a residual pressure in the expansion element.
- the expansion element expands due to the increasing pressure back to suitably 60 - 80% of the original outside diameter D 0 , the joint between the adjacent pipe elements is widened accordingly.
- the expansion element reduces again to 50 - 70% of the original outside diameter D 0 , the continuous joint width is dimensioned accordingly.
- the joint width d between the tubular elements driven into the substrate is expediently increased by at least about 30%, preferably by at least about 50%, in particular by at least about 100%, which, as mentioned, is effected by appropriate fluid supply.
- the fluid used is preferably a pressure-resistant liquid, but optionally other liquids, such as water, and even gases, such as air, may be used.
- the expansion elements can in principle assume any geometric shape, but they are at least adapted to the cross-sectional shape of the tubular elements.
- the most common shapes are ring elements and spirally inserted elements which extend over the end face of the tube elements.
- annular expansion elements along the circumference are divided sectorally.
- pressure increase can be brought about in all sectors, but also in only a part of the sectors. In principle, a pressure increase in a single sector.
- the inventive method has the primary advantage that the expansion elements can be easily and undamaged drawn into the tube interior. Even this alone has a considerable economic and environmental value, designed for extremely strong pressure load expansion elements must not be purchased after use, but can be reused. Damaged expansion elements can be repaired or disposed of properly. , ,
- the method according to the invention can also be applied by opening a secondary use in various ways:
- the joints can be filled with a flowable, hardening, pressure-resistant construction material and thus the stability of the pipe string can be increased, for example with mortar.
- the joints can be filled with an elastic material, such as silicone, which seals the pipe string with lasting elasticity.
- the elastic material may be bag-shaped or tubular and may be filled with a fluid, i. a liquid or a gas to be filled. The tube or bag used for this is much cheaper than the previously removed expansion element.
- the pipe string does not reach the specified length, it can be adjusted by widening a given number of joints.
- joints of a pipe string with the expansion element removed can e.g. be filled with a flowable, hardening material for an underpinning or excavation pit, iris specific
- - Fig. 1 is a vertical section through a press shaft with a
- Fig. 2 shows the course of the pipe string below a road section
- - Fig. 3 is an axial section through two frontally adjacent
- Fig. 4 shows a detail of a joint connection of two pipe elements with a
- Measuring and filling device according to IV of Fig. 3, and - Fig. 5 a pipe string with n elements four different stages of removal of the expansion elements.
- a pipe string 14 is propelled, which runs approximately parallel to the earth surface 16 at a depth of a few meters.
- the individual pipe elements 18 are lowered by means of a lifting device 20 in the press shaft 12.
- An abutment 22 supporting pressing device 24 is aligned with the tubing string 14.
- a pressure ring 26 presses the end face on the rearmost tubular element 18 and pushes the entire pipe string 14 in the feed direction 28 by the length I of a tubular element 18 forward. Then, the pressure ring 26 is withdrawn, a new tube member 18 is lowered and set with the interposition of an expansion element 44 (Fig. 3) precisely. Then the insertion takes place by a further tube length I. Simultaneously with the pressing of the tubing string 18 in the substrate 10, the displaced soil is reduced by a head piece 30 in a conventional manner.
- the propulsion takes place as mentioned step by step.
- One step involves the insertion of a tubular element 18, the advancement of the tubing string 14 by the length I of the tubular element 18 in the advancing direction 28.
- the advancing force 40 (FIG. 3) is transferred from tube element to tube element 18 via the expansion elements 44 (FIG. 3) shown below transfer.
- tubing string 14 generally runs approximately parallel to the earth's surface 16.
- the tubing string 14 may, however, also run at any other angle.
- eccentricities may occur during the advancement of a pipe string 18, as shown in detail in FIG. 3.
- the head piece 30 usually has a locating device 36, so the position can be determined at any time and any necessary corrections made. Next can be precisely excavated at a possibly necessary repair or replacement of the head piece 30, an auxiliary shaft.
- FIG. 2 an S-piece of a road 38 with underlying pipe string 14 is indicated.
- the pipe string 14 is performed with the largest possible bending radius through the S-piece, the projected pipe path runs as straight as possible.
- Measuring and process control according to the present invention may be Pipe string 14 follow the projected pipe path as far as possible.
- Fig. 3 shows the end faces 42 of two tubular elements 18 in the rest position, on soft a propelling force has been exercised.
- the two end faces 42 of the tubular elements 18 are connected at the end by an expansion element 44 designed as a hollow profile.
- the cavity of the expansion element 44 is filled with a pressure-resistant fluid 46, the pressure p is in the present case about 80 bar.
- the distance d between the end faces forming the joint 70 is 18 mm.
- the connecting region of the two tubular elements 18 is covered with a sleeve 48, which has a guiding and sealing function.
- the sealing function is supported by an inserted O-ring 50.
- all the cavities of the expansion elements 44 are connected over the entire pipe string 14 via a pressure line 56, as shown in Fig. 4.
- This pressure line 56 is connected via a filling cock 58 with the fitting 60 of each connected expansion element 54. With a lever 62, the filler cock 58 can be opened.
- the fitting 60 is also equipped with a pressure gauge 64 and a vent cock 66 through which excess fluid 46 can be discharged into the interior of the tubing string 14.
- the pressure p in the expansion element 44 according to FIG. 4 is greatly increased, as a result of which the expansion element 44 has assumed a somewhat less flattened, virtually circular cross-section. Accordingly, the left tubular member 18 is displaced in the direction of the arrow 52, the joint 70 has now assumed a predetermined increased width d '.
- Fig. 5 shows a pipe string 14 between a press shaft 12 and an end shaft 12 '.
- the tubing string 14 is present about 1, 5 km long. Not shown are any corresponding to the press shaft ⁇ 2
- the pipe string 14 with n pipe elements 18 is created, between the individual pipe elements 18, the element 44 is arranged at the front side, which is under a residual pressure.
- the first joint 70 has been widened by almost exactly twice the pressure in the first expansion element 44, the first tube element 18 has been pressed in the direction of the arrow 52 in the direction of the press shaft 12. It will be the moment of pressure relief in the joint 70 and the
- the same process can be carried out from the end shaft 12 'to the press shaft 12.
- the pressure can be increased simultaneously in two expansion elements 44 until the distance d 1 is reached in the two joints concerned, both expansion elements 44 simultaneously relieved and pulled into the tube interior.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH11532005 | 2005-07-12 | ||
PCT/CH2006/000355 WO2007006165A1 (de) | 2005-07-12 | 2006-07-04 | Erstellung eines rohrstrangs im untergrund |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1904716A1 true EP1904716A1 (de) | 2008-04-02 |
EP1904716B1 EP1904716B1 (de) | 2008-12-31 |
Family
ID=36975233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06752906A Ceased EP1904716B1 (de) | 2005-07-12 | 2006-07-04 | Erstellung eines rohrstrangs im untergrund |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1904716B1 (de) |
DE (1) | DE502006002514D1 (de) |
WO (1) | WO2007006165A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT511199B1 (de) * | 2011-09-20 | 2012-10-15 | Ilf Beratende Ingenieure Zt Gmbh | Schildvortriebsvorrichtung |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2505980A1 (de) * | 1975-02-13 | 1976-08-19 | Holzmann Philipp Ag | Verfahren zum vortrieb von im wesentlichen ringfoermigen bauteilen, insbesondere fuer den hoch- und tiefbau |
DE3414180A1 (de) * | 1984-04-14 | 1985-10-24 | Georg Prinzing GmbH & Co KG Betonformen- und Maschinenfabrik, 7902 Blaubeuren | Dichtungseinrichtung fuer aneinanderstossende, zumindest etwa rohrfoermige bauteile, insbesondere fuer betonformteile |
DE3815141A1 (de) * | 1988-05-04 | 1989-11-16 | Phoenix Ag | Aktivierbare dichtung fuer vorpressrohre |
-
2006
- 2006-07-04 EP EP06752906A patent/EP1904716B1/de not_active Ceased
- 2006-07-04 WO PCT/CH2006/000355 patent/WO2007006165A1/de not_active Application Discontinuation
- 2006-07-04 DE DE502006002514T patent/DE502006002514D1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2007006165A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE502006002514D1 (de) | 2009-02-12 |
EP1904716B1 (de) | 2008-12-31 |
WO2007006165A1 (de) | 2007-01-18 |
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