Rock roadheader

Roadheader excavation performance

rock cutting tools Excavation performance Figure 1: Main influencing parameters of "excavation performance" in roadheader operation. First of all, the excavation performance is influenced by the machine parameters of the chosen tunnelling rig - the installed power, the type of cutter head and the rock cutting tools mounted.

Chatear más

Products – Tunnelling Technology & Equipment – Herrenknecht AG

In addition to outstanding technology, our focus is on a clear value proposition, measurable customer benefits and a spirit of teamwork. As the world market leader for integrated technical solutions in mechanized tunnelling, we offer our project partners the broadest and deepest product portfolio on …

Chatear más

Roadheaders Designed For Continuous Excavation | ...

MR361 roadheader is an electro-hydraulic part-face cutting machine designed for roadway development and for coal, rock, gypsum, potash and salt mining.

Chatear más

EBZ150 Rock Tunneling Boring Machine,Roadheader,Roadheader ...

EBZ150 Rock Tunneling Boring Machine,Roadheader,Roadheader machine,Rock tunnel boring machine EBZ150 is a kind of cantilever tunneling machine which is integrating cutting, loading and traveling function, applicable to the coal or semi-coal tunnel....

Chatear más

1090. Numerical simulation of rock fragmentation process ...

Keywords: roadheader pick, rock fragmentation, numerical simulation, particle flow method. 1. Introduction Roadheader is widely used in rock cutting and is one of the key equipments for underground excavation [1, 2]. The roadheader pick plays a vital role when the roadheader works owing to its ability to cut rock directly.

Chatear más

Road Header Tunneling Roadheader - YouTube

 · Road Header Tunneling Roadheader [email protected] chinacoal10.

Chatear más

Tunnelling with roadheaders

What is a roadheader? A roadheader is an excavation machine that has a rotating, rock-cutting head on the front, mounted to a boom. When the underground rock is cut, a loading device transfers the rock onto a conveyor belt which runs the spoil onto haulage trucks. The machine travels on bulldozer style tracks and weighs about 100 tonnes.

Chatear más

(PDF) Rock Mechanical Aspects of Roadheader Excavation

The lifetime of the present pick tools in higher rock strength and abrasivity is the major limiting factor for roadheader use in hard rock [2] – see Fig. 2. But also the geometric configuration ...

Chatear más

Roadheader - Wikipedia

A roadheader, also called a boom-type roadheader, road header machine, road header or just header machine, is a piece of excavating equipment consisting of a boom-mounted cutting head, a loading device usually involving a conveyor, and a crawler travelling track to move the entire machine forward into the rock …

Chatear más

Study on Roadheader Cutting Load at Different Properties ...

The mechanism of cutting process of roadheader with cutting head was researched, and the influences of properties of coal and rock on cutting load were deeply analyzed. Aimed at the defects of traditional calculation method of cutting load on fully expressing the complex cutting process of cutting head, the method of finite element simulation was proposed to simulate the dynamic cutting process.

Chatear más

Excavation of High-Stressed Hard Rock with Roadheader

Drill and blast method becomes unfavorable for deep mining of hard rock. Mechanical excavation with roadheader EBZ160TY was trialed at work face with hard rock and high ground stress. Work procedure and performance of the roadheader were recorded and analyzed. The results showed that, roadheader EBZ160TY, with designed excavating strength of 80 MPa, presented amazingly good performance in …

Chatear más

rock roadheader grinder attachment backhoe

a company selling rock and concrete grinders attachement. rock grinder attachment for excavator,Roadheader in Mining. LANG TOOL CO. LTC Excavators, Stump Grinders, Rock Grinders Lang Tool Company provides a variety of products such as Stump grinder Rock grinders Insitu remediation blenders Mowers Tree mulchersand services for Brownfield Remediation, nationwide …

Chatear más

Roadheader - All industrial manufacturers - Videos

Shaft Boring Roadheader (SBR) was developed for the mechanized sinking of blind shafts in soft to medium-hard rock. Unlike the Shaft Boring Machine (SBM) with a hard rock cutting wheel installed, the SBR has been equipped ...

Chatear más

Estimation of optimum specific energy based on rock ...

based on rock properties for assessment of roadheader performance by C. Balci*, M.A. Demircin†, H. Copur*, and H. Tuncdemir* Synopsis Specific energy is defined as the amount of work required to break a unit volume of rock and is used to predict the performance of mechanical miners. It is obtained from full-scale rock cutting

Chatear más

Roadheaders for tunneling - Mining & Rock Technology

MT361 roadheader is an electro-hydraulic part-face cutting machine designed for roadway development and for coal, rock, gypsum, potash and salt mining. The special attachments and wide array of options, such as an integrated swivel chain conveyor, coupled with high tramming speed for relocation, make it ideal for a variety of mining and ...

Chatear más

SCR520 Roadheader for Sale | roadheader Price

The self-developed cutting head and pick design increase the cutting capacity by 30% and the rock breaking capacity by 20%. The first variable load-sensitive pump for the hydraulic system of the roadheader, low heat generation, high efficiency, stability.

Chatear más

Rock Grinder & Cutter Head Blog | Alpine Sales and Rental ...

 · Today we loaded up another refurbished AM50 roadheader, on its way to deployment in a Canadian Potash mine. The AM50 is a work horse roadheader. A stout yet compact 25-ton machine with 150-hp cutter motor, it is ideal for medium hardness rock …

Chatear más

Roadheader - Wikipedia

A roadheader, also called a boom-type roadheader, road header machine, road header or just header machine, is a piece of excavating equipment consisting of a boom-mounted cutting head, a loading device usually involving a conveyor, and a crawler travelling track to move the entire machine forward into the rock …

Chatear más

ROADHEADERS PERFORMANCE OPTIMIZATION

The roadheader production rate and bit costs are controlled by several parameters including: Rock parameters, such as rock compressive and tensile strength, percent of hard and abrasive mineral content (i.e. quartz), rock fabric and matrix type and hardness, existence of oriented

Chatear más

Roadheader - MH620 - Mining and Rock Technology

MH620 hard-rock miner is an electrically powered and crawler-mounted roadheader that is engineered to excavate roadways and galleries. This heavy-duty machine has a powerful transverse cutter head mounted on an extremely robust telescopic boom. It is designed to excavate rock with high compressive strengths.

Chatear más

Roadheader and Rock Cutter Supplier for Tunneling and Mining

Roadheader and Rock Cutting Equipment

Chatear más

The performance of a roadheader in high strength rock ...

scale rock cutting tests in the laboratory using a linear cutting machine. Cutter force and specific energy values were recorded for different depths of cut and cutter spacings and likely net cutting rate of the roadheader exca-vating rock formation was predicted using specific energy and cutter head power.

Chatear más

Publications and Seminar Notes - Earth Mechanics Institute

7) L. Ozdemir, B. Nilsen, "Recommended Laboratory Rock Testing For TBM Projects " FIELD CUTTERLOAD / THRUST MEASUREMENTS FOR HARD ROCK TBMS. 1) Wang F., Ozdemir L., and Fishman C., "Tunnel Boring Machine Instrumentation ", Rapid Excavation and Tunneling Conference (RETC) Proceedings, 1979. ROADHEADER

Chatear más

Roadheader - antraquip.net

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.

Chatear más

Publications and Seminar Notes - Earth Mechanics Institute

7) L. Ozdemir, B. Nilsen, "Recommended Laboratory Rock Testing For TBM Projects " FIELD CUTTERLOAD / THRUST MEASUREMENTS FOR HARD ROCK TBMS. 1) Wang F., Ozdemir L., and Fishman C., "Tunnel Boring Machine Instrumentation ", Rapid Excavation and Tunneling Conference (RETC) Proceedings, 1979. ROADHEADER

Chatear más

Shale Roadheader - wmwfoundation.org

Shale Roadheader - danceemporium.org. best coal stocks invest - Roadheader Construction. KAMY Roadheaders. KAMY offers unmatched quality, value, and innovation in our rock …

Chatear más

Alpine Rock & Concrete Grinders | Soil Mixers ...

Alpine specializes in rock & concrete cutting attachments, roadheaders, and soil mixing equipment. For over 40 years we have provided innovative,cost-effective solutions for the construction, mining, and environmental remediation sectors.

Chatear más

TUNNELLING IN ROCKS – PRESENT TECHNOLOGY AND …

TUNNELLING IN ROCKS – PRESENT TECHNOLOGY AND FUTURE CHALLENGES ZHAO Jian Professor of Rock Mechanics and Tunnelling Swiss Federal Institute of Technology (EPFL) Lausanne, Switzerland ... In 1960s, roadheader was introduced to tunnelling. 18 Rock Excavation: TBM Technology

Chatear más

Hydraulic Cutters, Roadheaders, Rotary Cutters | Antraquip ...

 · All of our products can be utilized in a variety of applications from rock excavation, trenching, demolition and concrete, to underwater cutting, tunneling, and scaling. Rock Cutting Applications. Antraquip offers a complete line of rock and concrete cutting solutions to fit any project.

Chatear más

The performance of a roadheader in high strength rock ...

scale rock cutting tests in the laboratory using a linear cutting machine. Cutter force and specific energy values were recorded for different depths of cut and cutter spacings and likely net cutting rate of the roadheader exca-vating rock formation was predicted using specific energy and cutter head power.

Chatear más

Roadheader - hengliamerica.com

Boom-type roadheader consists of a travelling mechanism, a working mechanism, a loading & transportation mechanism and a transfer mechanism. As the travelling mechanism moves forward, the cutter of the working mechanism continually breaks the rock and transports the broken rock away.

Chatear más

China Roadheader manufacturer, Coal Rock Crawler Mucking ...

China Roadheader supplier, Coal Rock Crawler Mucking Loader, Boring Roadheader Manufacturers/ Suppliers - Shandong Loreen International Trade Co., Ltd.

Chatear más

Roadheader - Wikipedia

A roadheader, also called a boom-type roadheader, road header machine, road header or just header machine, is a piece of excavating equipment consisting of a boom-mounted cutting head, a loading device usually involving a conveyor, and a crawler travelling track to move the entire machine forward into the rock …

Chatear más

Roadheader - MH620 - Mining and Rock Technology

MH620 hard-rock miner is an electrically powered and crawler-mounted roadheader that is engineered to excavate roadways and galleries. This heavy-duty machine has a powerful transverse cutter head mounted on an extremely robust telescopic boom. It is designed to excavate rock with high compressive strengths.

Chatear más

ROADHEADER IN TUNNELING - Tunneling Short Course

EXAMPLES – ROADHEADER SELECTION . 7 • Complex geology • Free access to the face • Ability for partial face excavation • Gentle excavation • Not sensitive against squeezing rock • High cutting performance in soft and medium hard rock (up to 130 m³/NCH)

Chatear más

Roadheaders in Tunneling - Tunnel Business Magazine

The need to understand the rock cutting process via roadheaders in an intensive way has become more and more of a necessity due to the various options using mechanized excavation and tunneling methods.

Chatear más

Buying a Roadheader?: Here's What to Consider - Tunnel ...

In those cases, the roadheader is the best option. On the other end, in areas where the rock may be less than 100 MPa, mining with a roadheader may be even cheaper than drill-and-blast. The advantage of a roadheader application is that it is a continuous mining operation.

Chatear más

Suitability of Brisbane Rock Conditions to Roadheader ...

Suitability of Brisbane Rock Conditions to Roadheader Excavation by Jody Herley Roadheader excavation has typically been limited in its ability to cut hard rock. Despite this, a number of tunnelling projects being implemented in South-East Queensland are utilising roadheaders to excavate sections of the tunnel which pass through the

Chatear más

China Roadheader manufacturer, Coal Rock Crawler Mucking ...

China Roadheader supplier, Coal Rock Crawler Mucking Loader, Boring Roadheader Manufacturers/ Suppliers - Shandong Loreen International Trade Co., Ltd.

Chatear más

Rock cutting with roadheaders | SpringerLink

The paper describes with practical case studies how some of the important factors influencing the excavation performance of boom tunnelling machines equipped with drag tools may be predicted. The...

Chatear más

Related Rock roadheader