Roadheaders Designed For Continuous Excavation | Sandvik,
Sandvik MR361 roadheader is an electro-hydraulic part-face cutting machine designed for roadway development and mineral production in coal, rock, gypsum, potash and salt and metal mining.
Roadheader - Rock Grinders, Concre
Roadheader Antraquip is the leading manufacturer of Roadheaders. Our roadheaders are advanced, self-propelled and extremely powerful rock cutting machines. We offer roadheaders in the weight class of 13 – 80 tons operating weight and they are designed to excavate roadways, tunnels and chambers continuously without using explosives.
Roadheaders | Alpine Roadheading Products | Bellefonte PA
Alpine has been in the roadheader design, manufacture, and sales business for over 35 years. These days we focus on in-house refurbished continuous mining roadheaders as well as new machine offerings. Alpine offers technical project and machine consulting, machine customization, parts and service or all roadheaders. We look forward to using our,
Roadheader – A comprehensive review - ScienceDirect
01/01/2020· The roadheader is a machine for excavating rock in mining and civil construction projects. It is a hybrid machine, with better manoeuvrability than that of tunnel boring machines. It can cut rocks even up to 160 MPa, if laminated or fractured, in different tunnel profiles and adapts easily to changing operational conditions.
Shaft Boring Roadheader (SBR) - Herrenknecht AG
The Shaft Boring Roadheader (SBR) was developed for the mechanized sinking of blind shafts in soft to medium-hard rock with up to 120 MPa. For the efficient excavation of the rock, the SBR has been equipped with a roadheader boom and a rotating cutting drum. This allows the creation of variable shaft diameters between 7 and 12 meters.
ROADHEADER PERFORMANCE PREDICTION
roadheader performances in the vicinity of the sampled sites. Table 2 shows correlations between Predicted Cutting Rates and observed Production Cutting Rates. PREDICTION METHOD Coefficient of CORRELATION FORMULA Determination y = PRODUCTION CUTTING RATE (m3/hr) 2r x = PREDICTED CUTTING RATE (m3/hr) BILGIN (2.5:1) 0.3490.78 y =
ROADHEADER IN TUNNELING - Tunneling Short Course
Machines . Hard rock TBM’s Excavator Attachments Roadheaders Compressive Strength . Stability / Fracturing . Mechanical Excavation . with Breaker / Splitter . SELECTION CRITERIA FOR EXCAVATION METHOD . EXAMPLES – ROADHEADER SELECTION . 7 • Complex geology • Free access to the face • Ability for partial face excavation • Gentle excavation • Not
(PDF) Performance of a roadheader under harsh working,
Roadheaders are versatile excavation machines which are used for many purposes such as mining, tunnelling, shaft boring and underwater excavation
BREAKTHROUGHS IN TUNNELING 2019 DRILL & BLAST AND
Machines. Hardrock TBM. Excavator Attachments. Roadheaders. Rock Compressive Strength . Rock Mass Conditions. Mechanical Excavation. with Breakers / Splitters. MECHANICAL TUNNEL EXCAVATION 5 Mechanical Tunnel Excavation. Part face excavation. Soft (loose) rock Full face excavation. Hard (stable) rock. ROADHEADER TUNNEL EXCAVATION 6 CAI – CERCHAR
Core Cutters | Parkland International
AUTOMATIC CORE/TUBE CUTTING MACHINE. The Parkland Series R range of Automatic Core Cutting Machines are ideal for customers looking for a high quality, accurate finish with a minimum amount of operator time in producing their cut pieces, with quick and easy settings for different core and tube diameters and wall thicknesses.
Sandvik MH621 Electrically Powered Hard-Rock Miner,
Sandvik MH621 hard-rock miner is an electrically powered and crawler-mounted roadheader that is engineered to excavate roadways and galleries in strong rock formations. This heavy-duty machine has a powerful transverse cutter head mounted on an extremely robust telescopic cutter boom. It is designed to excavate rock with high compressive strengths.
Cutting performance evaluation of a roadheader machine by,
A roadheader machine is important mechanical equipment for roadway drivage through mechanical crushing. Through analysis and research to discover the key parameters relating to the cutting performance of the roadheader machine, the performance of the roadheader machine must be optimized and costs reduced, as well as productivity increased. As,
Special-Purpose Machines for Mining and Tunneling
The BRH 130 is a roadheader in the 55 t class with 160 kW cutting power. Designed for mining and tunneling applications, the machine’s 400 mm feed of the whole cutting arm allows intrusion cutting without moving the machine, supported by a rugged loading system with loading arms and a powerful cutting head. Various options are available. Technical data BRH 130.
(PDF) Roadheader applications in mining and tunneling
The roadheader is a machine for excavating rock in mining and civil construction projects. It is a hybrid machine, with better manoeuvrability than that of
Research Article Study on Roadheader Cutting Load at,
of detritus sampled from di erent excavation machines and methods. Song et al. [ ] studied rock debris size and grain size distribution by the method of probability and statistics theory and the distribution rule of e ect of rock properties and mechanical parameters was carried out. Li et al. [ , ] researched the e ect of rock fragmentation of static and,
Performance Analysis of a Hybrid Power Cutting System for,
The cutting unit is the core part of roadheader, including cutting motor, gear reducer, cantilever, and cutting head. Walking unit is mainly responsible for the shunting around, whose power configuration was about 70 kW. Figure 1 . Boom-type roadheader. One of the characteristics for roadheader is that walking unit will suspend when the machine is cutting coal and rock
Core Cutters | Parkland International
AUTOMATIC CORE/TUBE CUTTING MACHINE. The Parkland Series R range of Automatic Core Cutting Machines are ideal for customers looking for a high quality, accurate finish with a minimum amount of operator time in producing their cut pieces, with quick and easy settings for different core and tube diameters and wall thicknesses.
Some geological and geotechnical factors affecting the,
01/11/2004· Field data on roadheader machine performance in inclined tunnels were also published by Unrug and Whitsell (1984) for a 14° slope in Pyro, classification and assessment for the performance estimation of roadheaders is based on the specific energy found from core cutting tests (McFeat-Smith and Fowell, 1977, McFeat-Smith and Fowell, 1979; Fowell and
CUTTING PERFORMANCE ASSESSMENT OF A MEDIUM WEIGHT,
The model developed for the medium-weight machine to predict instantaneous cutting rate is compared with those developed earlier for the light-weight and iv. heavy-weight machines. It is determined that improvements in cutting performance with the medium-weight machines as compared to light-weight machines is achieved for the rocks requiring laboratory cutting
Vertical Shaft Sinking Machine (VSM) - Herrenknecht AG
The shaft boring machine is lowered into the launch shaft structure and attached firmly to the shaft with its three machine arms. A rotating cutting drum equipped with chisel tools is attached to a telescopic boom. This roadheader excavates and breaks the soil at the base of the shaft. The roadheader is telescopic, and can swivel up and down or rotate. Hence, the entire cross
Cutting performance evaluation of a roadheader machine by,
A roadheader machine is important mechanical equipment for roadway drivage through mechanical crushing. Through analysis and research to discover the key parameters relating to the cutting performance of the roadheader machine, the performance of the roadheader machine must be optimized and costs reduced, as well as productivity increased. As,
ROADHEADER BRH 178-300 N/H - operta-bbm.de
ROADHEADER BRH 178-300 N/H The Roadheader BRH 178/300 is designed for the inexpensive excavation of natural mi- neral deposits in underground and open-cast mining and for the fast and safe driving of tunnels or other large underground spaces. The maximum breakout area of 58 m²/ 68 m² is cut from a stationary position. The pre-cutting of the crown and the
Special-Purpose Machines for Mining and Tunneling
The BRH 130 is a roadheader in the 55 t class with 160 kW cutting power. Designed for mining and tunneling applications, the machine’s 400 mm feed of the whole cutting arm allows intrusion cutting without moving the machine, supported by a rugged loading system with loading arms and a powerful cutting head. Various options are available. Technical data BRH 130.
EBZ132 - Roadheaders - Narrow-body Roadheader by Alpine,
As a machine applicable for semi-coal rock tunnel, the roadheader has narrow-body, high strength, large power, and semi-closure hydraulic system, all of which are as core technique and innovative highlights of the machine; Narrow-body: The body width of the roadheader is decreased, as well as the dimension of the traveling unit, oil tank, operation panel, and rear
Research Article Study on Roadheader Cutting Load at,
of detritus sampled from di erent excavation machines and methods. Song et al. [ ] studied rock debris size and grain size distribution by the method of probability and statistics theory and the distribution rule of e ect of rock properties and mechanical parameters was carried out. Li et al. [ , ] researched the e ect of rock fragmentation of static and,
China Heavy-Duty Tunnel Miner Vehicle Dinting Machines,
This series of Boom-type roadheader can finish the works of cutting, loading and transport, walking and operating at the same time.The machine adopts mechanical and drive hydraulic driving mode, which is with high cutting efficiency, steady operation and reliability. The Coal and half coal - rock roadheader also are equipped with a airborne pressure charging system for
Quality roadheader & truck-mounted crane Manufacturer
Shijiazhuang Coal Mining Machinery Co., Ltd. is best roadheader, truck-mounted crane and Drilling machine for underground and for water supplier, we has good quality products &
Core Cutters | Parkland International
AUTOMATIC CORE/TUBE CUTTING MACHINE. The Parkland Series R range of Automatic Core Cutting Machines are ideal for customers looking for a high quality, accurate finish with a minimum amount of operator time in producing their cut pieces, with quick and easy settings for different core and tube diameters and wall thicknesses.
CUTTING PERFORMANCE ASSESSMENT OF A MEDIUM WEIGHT,
The model developed for the medium-weight machine to predict instantaneous cutting rate is compared with those developed earlier for the light-weight and iv. heavy-weight machines. It is determined that improvements in cutting performance with the medium-weight machines as compared to light-weight machines is achieved for the rocks requiring laboratory cutting
Some geological and geotechnical factors affecting the,
01/11/2004· Field data on roadheader machine performance in inclined tunnels were also published by Unrug and Whitsell (1984) for a 14° slope in Pyro, classification and assessment for the performance estimation of roadheaders is based on the specific energy found from core cutting tests (McFeat-Smith and Fowell, 1977, McFeat-Smith and Fowell, 1979; Fowell and
