(PDF) Technical-Economic Comparison between Excavation by ...

MR 380 roadheader. Length . 15200 mm . Height . 4523 mm ... Scheme 2 adopts a fan cut (Fig ure 6); ... The automation of these machines offers promise for increasing productivity and ...

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MR341 Roadheader MINING [Ground Construction ...

MR341 roadheader is a part-face cutting machine designed for roadway development, as well as coal, rock, gypsum, potash and salt mining. This electro-hydraulic machine comes with special accessories and a wide array of options – such as an integrated ...

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ROADHEADER PERFORMANCE PREDICTION

actual cutting rates per hour or per shift will only be a small and variable fraction of any calculated instantaneous cutting rates. Laboratory cuttability tests are a useful short-cut, in using a small-scale simulation of the action of a real cutting tool as mounted on a roadheader.

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Equipment for Tunnel Construction -Equipment for ...

Roadheader:. Boom type Roadheader is a piece of excavating equipment consisting of a boom-mounted cutting head, A loading device having conveyor-belt, And a crawler travelling track to move the machine forward into the rock face.

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MR341 200 KW Roadheaders For Mining, खनन के यंत्र ...

MR341 roadheader is a part-face cutting machine designed for roadway development, as well as coal, rock, gypsum, potash and salt mining. This electro-hydraulic machine comes with special accessories and a wide array of options – such as an integrated swivel chain conveyor, coupled with high tramming speed for relocation – making it ...

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MR341 Roadheader Part-face Cutting Machine ...

MR341 roadheader is a part-face cutting machine designed for roadway development in coal mining. This electro-hydraulic machine comes with special accessories and a wide array of options – such as an integrated swivel chain …

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2021 Mr341 Roadheader For Mining - Machinery Partner

MR341 roadheader is a part-face cutting machine designed for roadway development in coal mining. This electro-hydraulic machine comes with special accessories and a wide array of options – such as an integrated swivel chain conveyor, coupled with high tramming speed for relocation – making it ideal for a variety of mining and tunneling applications.

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A Tunnel Boring Machine Makes Mining History in Australia ...

Cutterhead: The rotating circular structure on the front of a tunnel boring machine in which the cutting tools are installed and the spoils are picked up from the tunnel invert.. Disc cutter: A disc-shaped cutting tool that cuts hard rock or mixed ground when mounted to a TBM. Dual Mode "Crossover" TBM: A TBM that combines characteristics from hard rock and soft ground machines and can ...

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Roadheaders Designed For Continuous Excavation | ...

MR341 roadheader is a part-face cutting machine designed for roadway development in coal mining. This electro-hydraulic machine comes with special accessories and a wide array of options – such as an integrated swivel chain …

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Roadheaders Designed For Continuous Excavation | ...

MR341 roadheader is a part-face cutting machine designed for roadway development in coal mining. This electro-hydraulic machine comes with special accessories and a wide array of options – such as an integrated swivel chain conveyor, coupled with high tramming speed for relocation – making it ideal for a variety of mining and tunneling applications.

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Roadheaders - All the products on DirectIndustry

MR341 roadheader is a part-face cutting machine designed for roadway development, as well as coal, rock, gypsum, potash and salt mining. This electro-hydraulic machine comes with special accessories and a wide ...

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BREAKTHROUGHS IN TUNNELING 2019 DRILL & BLAST …

Part face excavation. Soft (loose) rock Full face excavation. Hard (stable) ... Net Cutting Rate for MR/MT/MH620(300 kW installed cutter head power) equipped with Cutter Head 105 -G 57+and 22 mm TC Diameter Picks ... • Visualization of cutting process for machine operator.

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MR341 | Cimertex

Jul 13, 2020· MR341 roadheader is a part-face cutter machine designed for roadway development, as well as for coal, rock, gypsum, potash and salt mining. This electro-hydraulic machine has several special accessories and a wide range of options. Due to is powerful transversal cuttter head, this equipment is able to cut rock up to 100 MPa (UCS).

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Modeling and response analysis of the attitude angles of ...

Jul 12, 2021· The process of cutting a cross-section by roadheader is composed of horizontal cutting process and vertical cutting process, which are conducted alternately until the whole cross-section is cut out, as shown in Fig. 2. Therefore, the dynamical model of roadheader's attitude should be derived aiming at horizontal and vertical cutting process ...

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Determination of the Influence of Microwaves to the Hard ...

Roadheaders, TBM and another rock-cutting machine generally use two types of cutting tools, namely indenters and drag picks. The difference between these tools is the way in which they penetrate rock massive. Indenters are often used in full-face scale operations of TBMs and capable excavate rock with uniaxial compressive

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