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Nov 14, 2012 Article Yasin Torun TSITT (Turkish Society for Infrastructure and Trenchless Technology) held the NO DIG TURKEY 2012 CONFERENCE in Sanliurfa TR on 2-3 October 2012 with the valuable support of ISTT. Many local and international participants attended this unique trenchless event of Turkey.
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Mar 28, 2014 Article Achim Kühn Top performance at minus 27 degrees Celsius
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Jun 16, 2014 Article Herrenknecht AG With growing demand for raw materials, mines are applying increasing effort and expense to open up deep and difficult to access resources. With this in mind, the new Herrenknecht product portfolio of Raise Boring Rigs allows the optimal drilling of shafts with larger diametersat depths of up to 2,000 meters.
In the new and further development of Raise Boring Rigs, Herrenknecht draws on proven technologies and components as well as on extensive knowhow in the area of mechanized tunnelling technology.
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Nov 16, 2012 News Jeri Lamerton The Charles Machine Works (CMW®), Inc., manufacturer of Ditch Witch® underground construction equipment, announces the release of two new directional drills: the Ditch Witch JT30 Mach 1 and JT30 All Terrain.
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Dec 18, 2012 News Yasin Torun TSITT (Turkish Society for Infrastructure and Trenchless Technology) held the MECHANIZED TUNNELING AND MICROTUNNELING SHORT COURSE in Sanliurfa Hilton Hotel TR in October 2012 with the valuable support of TTS (Turkish Tunneling Society) and ISTT. Many local and international participants attended this unique mechanized tunneling and microtunneling short course of Turkey.
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Apr 24, 2013 News The Charles Machine Works, Inc. The manufacturer of Ditch Witch underground construction equipment announces the release of its new TK Series HDD Guidance System.
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May 03, 2013 News Groundforce U Mole not only offers a range of trenchless technology equipment for the direct installation of new pipe line in the form of its range of US-designed and manufactured HammerHead impact and ramming hammers, it also offers the ability to aid other trenchless systems achieve greater production rates through difficult ground conditions. One such technique is Horizontal Directional Drilling (commonly known as HDD).
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May 21, 2013 News Günter Naujoks The company PRIME DRILLING from Wenden near Olpe/Germany was founded in 1999 and specialises in the design and construction of fluid-assisted, horizontal, directional drill rigs (HDD) with up to 6,000 kN pulling force.
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Jun 04, 2013 News Enemalta Corporation Works on the Interconnector project are advancing according to plan and at the beginning of last week, people going through the Coast Road managed to get a glimpse of a Horizontal Directional Drill (HDD) which was brought to Malta as part of the works currently being done ahead of the Interconnector.
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Jul 17, 2013 News TT UK Ltd. Several suburbs in the town of Unken in Schneizlreuth near Bad Reichenhall, Germany needed a new sewer pressure pipe to be installed to connect to a treatment plant some 4.5 km away. Whilst much of the new pipeline route could be installed using traditional open cut techniques.
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Aug 01, 2013 News Groundforce U Mole not only offers a range of trenchless technology equipment for the direct installation of new pipelines in the form of its range of US-designed and manufactured HammerHead impact and ramming hammers, it also offers the ability to aid other trenchless systems achieve greater production rates through difficult ground conditions. One such technique is Horizontal Directional Drilling (commonly known as HDD).
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(Image: Prof. Dr.-Ing. Dietrich Stein) Necessary precondition for the functionality of a community and urban development are efficient networks of pipelines and cables that provide a secure supply of water, gas, district heating, electricity and telecommunication as well as an ecologically friendly and secure drain and sewer system, i.e. collection and discharge of waste water. These pipe and cable networks are mostly available in Germany and throughout … |
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The term "Trenchless Technology for Installation of Cables and Pipelines by Jacking or Drilling" (referred to hereareafter as trenchless installation), is understood to mean "The Underground installation of lines by means of pulling in, pushing in, pressing in or ramming in into a cavity (borehole) made in the soil by means of boring or drilling." Influenced by DIN 20301 [DIN20301], boring or drilling is designated as the mechanised creation of a … |
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In this book, the term Trenchless Technology for Installation of Cables and Pipelines is understood to include the installation of supply and disposal lines (product lines), casing and host pipes, utility ducts and structural shells of man-accessible utility tunnels [Stein02] - all installed using trenchless methods of construction, e.g. without the excavation of trenches. The open cut method cannot be completely avoided but is used only to a limited … |
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The equipment for impact moling required is (Bild 5.1.1.2) [FI-Tracta] :
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The methods of impact moling are quickly and economically set up due to the ease of transport and erection of the boring plant. In principle, the DH can create straight linear boreholes with a diameter of 45 mm to 180 mm in dry or moist displaceable homogenous soils of soil class L to DIN 18319 [DIN18319:2000] and with expansion sleeves, this diameter can be increased to 300 mm. The use of expansion sleeves are limited to stable soils and should only … |
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Impact Moling, also known in literature as method with soil displacement, earth displacement hammers or earth piercing, and based on EN 12889 [DINEN12889:2000], are characterized by the displacement of the soil with the help of ramming energy with self-actuating jacking of the pneumatically driven displacement or percussive … |
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The jacking pipe is provided with a cone-shaped steel pipe point. Then, after aligning and securing the jacking pipe in the starting shaft against vertical and horizontal deviation, the horizontal ram, is rammed into the rear end of the steel pipe, with the aid of a socalled impact cone, until the pipe meets the soil resistance and the actual jacking is started. After the jacking of the first steel pipe (length up to 6 m) into the subsoil, the ram … |
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(Image: Connection between steel pipe and DH with the aid of a winch cable [Stein89g]) In principle, the corresponding discussion of Abschnitt 5.1.1.2 regarding the equipment of the pipe ramming with closed pipe front applies. In order to transmit the short-stroke ram impact more effectively to the steel pipe point, especially for longer pipes, the connection between the steel pipe and the DH is enhanced by means of a winch cable (Bild 5.1.2.2). The … |
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The pipe ramming with closed pipe front can be used for jacking steel pipes with an external diameter ≤ 150 mm in displaceable soils [ATVA125:1996] of soil class L to DIN 18319 [DIN18319:2000]. In comparison to the DH as a solo apparatus, the area of application is extended to artificially filled or unstable soils such as quick sands, loam soils or soils with groundwater as the reaction force here does not have to be absorbed by the jacket friction … |
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This method, in EN 12889 [DINEN12889:2000] called "pipe ramming with a pipe at its leading end" and in ATV-A 125E [ATVA125:1996] "Horizontal ram with closed pipe" is described as follows in the European Standard: "Pipe ramming with a pipe closed at its leading end is a technique of forming a bore by driving a steel casing with a closed end using a percussive hammer. The ground is displaced by the closed end" [DINEN12889:2000] (Bild 5.1.2). In this … |
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After installing and connecting the (typically) hydraulically driven jacking station in the starting shaft, the pilot drill string, consisting of interconnected drill rods each 1 m long, is statically pressed into the subsoil. This pilot drill string determines the future position of the pipe to be installed. After reaching the target shaft, the pilot displacement head is replaced with an expander with an external diameter adapted to the pipe to … |
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Three-phase jacking with the horizontal jacking with expander is not mentioned in EN 12889 [DINEN12889:2000]. A representative of this process is the Japanese method SPEEDER SR-12 [FI-Hosho] [FI-Speed] (Bild 5.1.3.2) (Bild 5.1.3.2).
The first phase is a displacement pilot boring by means of pressing … |
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(Image: Horizontal jacking plant in the starting shaft [FI-Lanci]) Equipment required for a horizontal jacking with expander include (Bild 5.1.3.2) (Bild 5.1.3.2) :
As this technique requires relatively high thrust forces for static … |
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