pumping concrete up a tunnel

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  • Tunnel Lining Project Takes Pumping To Great Lengths

    Tunnels and underground excavations - Tunneling techniques | Britannica

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  • Why Pump Concrete? | Construction Equipment

    Sep 28, 2010 · In addition, choosing to pump concrete can also be a function of the distance that the material must be conveyed. Tunneling and mining are two good examples of when the advantages of pumping cannot be ignored. Example: West Area Combined Sewer Overflows (CSOs) Tunnels and Pumping Station, Atlanta, GA

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  • How to Fill a Void under a Concrete Slab | URETEK Gulf Coast

    Sep 24, 2019 · A sand-cement grout can be used to fill voids under concrete slabs. This mix of sand, cement, and water is pumped through holes drilled to fill up the voids. While this method of slab jacking is cost-effective, there are major drawbacks to opting for this type of repair. Void penetration is not usually extensive, and this will result in the

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  • Sunil Bauchkar 25 MAY 2018

    Jun 16, 2018 · Concrete for tunnel lining. Essential practical aspects of pumping concrete through a world-record-distance of The long distance concrete pumping although has several advantages such as reduced cost, improved speed of Cohesive mix with retention time up to 12 hrs, Minimum flow required – 400mm after 12 hrs.

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  • Range Of Concrete Batching Plants To Choose From

    Concrete Batching Plants and Equipment - MEKA Concrete Plants PMSA supplies a full range of concrete ready-mix batching plants, ranging from smaller mobile solutions (25m3/hr) to top-of-range fixed solutions (over 150m3/hr capacity).

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  • Channel Tunnel: Construction of the World's Longest

    Firstly, the main tunnels were constructed up to the chamber location, as opposed to the UK side method. Further, a series of small tunnels were constructed from the main tunnel to form a roof for the arch of the chamber. The arch was formed by filling the sections of these small tunnels with concrete.

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  • Concrete Pouring Steps and Techniques - Structural Guide

    In addition, the finishing work can be done when the concrete is hardened up to a certain extend that the trowelling machine can lay on the concrete. Depending on the required finished of the concrete and considering irregularities of the concrete surface, the finishing of the concrete …

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  • Tunnel Concrete Placers - Con Forms

    Tunnels and underground excavations - Tunneling techniques | Britannica

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  • Mobile Concrete Mixing Plant-Concrete Mixer.co

    The mobile concrete mixing plant is a portable, productive, reliable, and cost-effective piece of equipment used to produce batches of concrete at most of the locations. Because it is portable, users can easily transport the equipment to a new location and begin to produce concrete batches at their own pace.

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  • The Lee Tunnel - Tideway Pumping Station

    Pumping Station and is the lowest point on the whole Tideway system. It also contains coarse screens which are cleared by a surface mounted rake and grab system. The two shafts are connected via a 30m long sprayed concrete lined tunnel finished with a stainless steel liner. From the suction tunnel the effluent flows into the suction culvert,

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  • Tunnels and underground excavations - Tunneling techniques

    Tunnels and underground excavations - Tunnels and underground excavations - Tunneling techniques: Tunnels are generally grouped in four broad categories, depending on the material through which they pass: soft ground, consisting of soil and very weak rock; hard rock; soft rock, such as shale, chalk, and friable sandstone; and subaqueous. While these four broad types of ground condition require

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  • Concrete Trailer | Line Pumps For Sale

    Trailer pumps can pump up to 2,000ft. vertically and up to 8,000ft. horizontally. They are extremely versatile and can pump concrete almost anywhere for high-rise structures, underground tunnels and shafts and even underwater for marine construction.

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  • CN102071953B - Method for casting surrounding concrete of

    The invention discloses a method for casting surrounding concrete outside of a lined steel pipe of a shield tunnel. The method comprises the following steps: transporting and installing a steel pipe in a finished shield tunnel, and arranging a pump truck outside a receiving well; sealing the full annular surface in different cabins at the bottom of the butted steel pipe by using a quickly and

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  • Microtunneling method statement - civil engineering

    Jan 15, 2020 · Approved Concrete jacking pipes from an approved supplier. Ready-mix concrete - for thrust wall and lunching eye 2-Setting up of a datum of the tunnel axis across the top of shaft "as a slot in a steel plate in the both sides of the shaft". install the feed pump on the top of the shaft, the slurry pump in the shaft bottom and connect it

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  • Tunnel Concrete Placers - Con Forms

    Tunnels and underground excavations - Tunneling techniques | Britannica

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  • Tunneling, Mining, and Shotcrete - Concrete Equipment

    The Mobile Maxcrete is the only vehicle that can travel up to 10 mph, transport up to 10 cubic yards of concrete, remix, agitate and place directly to the invert, into forms or in front of a paver. The self propelled chassis is bi-directional, with an operators' platform located to provide maximum visibility in …

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  • Groundhog tunnel under garage slab - DoItYourself.com

    Aug 06, 2015 · The garage is just under a year old, and this tunnel goes in at least 6 feet as far as I can tell. Can I pack gravel/dirt in there, or somehow pump concrete in? I just fear I'll have a car up on jack stands one day and have a cave in. FWIW the concrete is 4~ of …

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  • Concrete for the lining of tunnel tubes - Hochtief AG Vorm

    A tunnel lining is formed by pumping concrete between a support and a tunnel wall, the concrete being selected from the concretes of concrete group BII of German Industrial Standard (DIN) 1045 and containing as an additive, steel pins, rods or wires having a length of 35 to 50 mm and a diameter of 0.8 to 1.2 mm. Approximately 100 kg/m 3 of concrete is constituted by the steel pins or wires.

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  • What is Under-Slab Tunneling? (Definition, Process, and

    Dec 23, 2020 · Once the tunnel is filled and the start hole sealed off, the final step is called mud-pumping, which provides the most thorough support under your home. Mud-pumping sends a combination of Portland Cement, sifted topsoil, and water with pressure under the slab.

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  • Why Pump Concrete? | Construction Equipment

    Sep 28, 2010 · In addition, choosing to pump concrete can also be a function of the distance that the material must be conveyed. Tunneling and mining are two good examples of when the advantages of pumping cannot be ignored. Example: West Area Combined Sewer Overflows (CSOs) Tunnels and Pumping Station, Atlanta, GA

    GET A QUOTE