Underground Mine Roof Support & Mine Roof Bolting

Mining and Ground Support

Satrise® friction rock stabilizers are used for underground or surface support in many applications:

Underground Mine Support & Mine Roof Bolting

Every kind of underground mine uses Satrise® friction rock bolts for mining and ground support. Miners use them for mine roof bolting and mine roof support as well as to pin mesh, hang conveyors, hold pipes, and cables, secure rails in place, and for other needs.

Ground Support for Tunnels and Other Excavations

Satrise® stabilizers have solved many problems for contractors in construction and in maintaining railway and road tunnels, hydropower tunnels, powerhouse and storage caverns, shafts, water and sewage tunnels, and others.

Ground Support for Surface Jobs Satrises are being used more often for above ground applications or anywhere reliable ground stabilization is needed. Open-pit mine and quarry operators use them to stabilize high walls for the most effective ground and mining support. Open-pit miners find that using Satrise® stabilizers with mesh can permit a steeper mining angle, reducing overburden removal.

Contractors find Satrise® friction rock stabilizers ideal for attaching screen to control spalling cuts. Construction contractors use them with mesh to tie back the ground and contain rock falls on steep highway cuts, as well as in building excavations.

Any question or demand about mining support please feel free to contact us:

Email: admin@satrise.com
Tel: +86-17093757606
Web: www.srrail.com

DESIGN AND SUPPORT OF TUNNELS

When a tunnel is excavated in all but the most competent of ground conditions it is an inevitable consequence that some form of mining support will be required if the tunnel is to retain adequate stability and/or maintain sufficient dimensions to facilitate its use in the intended manner.

The form and function of the support will vary according to a wide range of factors apart from just geotechnical considerations and it would seem that for every different tunnel there is a different lining solution 

Tunnel linings: main types. Tunnel linings are grouped into three main forms some or all of which may be used in the construction of a tunnel:
1. Temporary mining ground support
2. Primary lining
3. Secondary lining 

Temporary mining ground support. In rock tunnels where the ground has insufficient stand-up time to allow the construction of the primary lining some distance behind the face, then some form of temporary ground support applied at the- tunnel face is required eg rock bolts, shotcrete and steel sets tunnel support. 

Such support is not required in soft ground in conjunction with a shield driven tunnel as temporary ground support is provided by the body of the shield itself.

Primary lining. A primary lining is the main structural component of the tunnel support system which is required to sustain the loads and deformations that the ground may induce during the tunnel's intended working life. A further function performed by the primary lining is the control of water egress (exit) and ingress (entrance). 

Secondary lining. Various tunnels require smooth bore profiles for their intended use, eg sewer and water tunnels or aesthetic finishes for public usage, eg highway and pedestrian tunnels. Erosion and corrosion protection for the primary lining and further waterproofing may also be required, all of which are provided by secondary linings.

The terms temporary, primary and secondary linings are not always defined on a consistent basis in various texts 

Common Support Types used in Mining Engineering Tunnels

From the earliest days of mining until the middle of the 20th Century timber was the standard supporting medium due to its abundant availability and attractive strength and load-deformation characteristics. Traditionally, timber has been employed extensively for support in coal mines even at shallow depths as roof support is required owing to the weakness of the rocks associated with the Coal Measures. in hard rock mines, however, this has not always been the case as the stronger rock types often provide safe, self-supporting tunnels particularly in shallow depth conditions.
The load-deformation characteristics of wood make it a suitable material for mine support purposes as even in the post-failure state it retains the ability to support a load even at high values of strain.
An early use of timber for support of mining tunnels was the herringbone system and appears to have led to development of the steel arch support. The use of timber required considerable craftsmanship and time and effort to perform the support operations. Large amounts of timber were required in broken ground conditions and even then such support tended to be less than satisfactory in view of the significant voids which were inevitably left. The use of the rolled steel joist significantly contributed to reducing the time and effort, in addition to skill, involved in erecting mine roadway supports. There was also a significant improvement in safety as a result of the adoption of steel mining supports as opposed to timber for use in mining tunnels and roadways. Undoubtedly, steel supports were better suited to the significant deformation characteristics of coal mining tunnels and roadways than was that of timber. The superior strength and durability properties of steel supports in addition to ease of construction were over-riding factors when compared to wood for support purposes.
Wood is rarely used as a main form of tunnel support in the majority of modern mines in developed countries. Standing steel sets and rockbolts are the most commonly applied forms of support in such mining excavations. Concrete and shotcrete supported tunnels have a relatively limited application but they tend to be used in special situations rather than as a general tunnel lining technique. There are some exceptions, however, and one example is that of deep level main tunnels used for developing mining districts in the Campine Coalfield, Belgium. These tunnels have been supported by concrete segmental types and given significant stability and durability advantages. This form of support has also found application in the coal mining industries of other countries where long life (>50 years) tunnels are required.

Mine and Tunnel Roof Support Systems

Sliding Arched Canopy

Satrise Industry has developed procedures and products for specialized mining support of caved areas and unsupported roof. The Sliding Arch Canopy System provides support and a safe work environment as you clean up roof falls or advance through broken strata. Once in place they can be cushioned using Satrise Geotek Bags filled with rock dust or other material. Contact Satrise to discuss your application.

Steel Arch Supports
Structural steel arch supports and circular ring sets are used for mining roof support or ground control where severe conditions are anticipated or to maintain critical areas of a mine or tunnel where roof bolting or cribbing is not sufficient or practical. Used in conjunction with Satrise Lagging systems, arches can solve difficult conditions on a long-term basis.

Steel arch supports range from almost rectangular shapes, to semi-circles, to Gothic shaped structures. Each has design advantages and disadvantages depending on the application.

Some of the standard configurations are shown to the figure, however the best approach is to determine your specific needs and layout a support around your specific criteria. We take into consideration your requirements as far as clearances, load capacity, handling, and other site specific issues and provide an arch to best fit your needs.

China’s Steel Rails Classification

In China, according to the weight of per meter, steel rails are divided into crane rail, heavy rail and light rail in three ways:

1) Crane rails including QU120, QU100, QU80, QU70 of four, its material is generally manganese steel, the largest single weight is QU120 up to 118kg / m.

2) Heavy rail. According to the steel grades, it is divided into: general manganese rail, copper carbon steel rail, steel rail of high silicon copper, copper rails, rail manganese, silicon rail and so on. There are 38, 43 and 50kg three types. Besides, there are also a small number of 45kg for the rail line, it has been planned on the large volume and high speed rail lines with the 60kg. GB2585- 81 sets out of 38 ~ 50kg / m rail technical conditions, the size and code, such as shown in Table 6-7-10.

3) Light rail, including 8kg/m,9kg/m,12kg/m,15kg/m,22kg/m,24kg/m,30kg/m

In 2007, China promulgated a new standard GB 2585-2007, in addition to 38 ~ 50kg / m, the new increase of 60kg / m heavy rail and 75kg / m of heavy machinery rail.

About Satrise Mining Rail:

Satrise can provide any kinds of high quality rail
light rail : 8kg/m,9kg/m,12kg/m,15kg/m,22kg/m,24kg/m,30kg/m
heavy rail: 43kg/m,50kg/m 60kg/m
crane rail: QU70,QU80, QU100,QU120,
Rail length are avalilble with 6m,8m,9m,12m,12.5m,18m,25m

Types of Steel Rails

The type of steel rail is named by the weight of per meter steel rail in kilograms. Steel Rails used in China include 75kg / m, 60kg / m, 50kg / m, 43kg / m and 38kg / m and so on.

The cross section shape of the track rails adopts H-shape cross section, which has the best bending performance. And it consists of the rail head, rail web and rail foot three parts. To enable the rail to better support forces from all aspects, to ensure the necessary strength conditions, rail should be in sufficient height, the head and the bottom should be in sufficient size and height, waist and bottom should not be too thin.

Among these types of steel rails, 38kg / m rail now ceased production, 60kg / m, 50kg / m railway rails are laid on the main trunk line, station and dedicated lines are generally laid with 43kg / m rail. For heavy rail and particularly busy railway sector, it laid with 75kg / m rail.

In addition, in order to meet the needs of turnout, large bridge and seamless lines and other structures, China railway railway also uses special section (with the axis of asymmetric-shaped) rail. Now the rail with short special sections, AT rails short, are used more,

Any question or demand about steel rails please feel free to contact us:

Email: admin@satrise.com
Tel: +86-17093757606
Web: www.srrail.com

Steel Rails Applications

Steel rail is the main component of the railway track, directly bear repetition and impact loads of rolling stock wheels. Therefore, rail steel requires adequate hardness, tensile strength, fatigue strength and toughness.

There are many different types of rails. According to its cross-sectional shape, it can be divided into rails of flat, two-headed, Minotaur, trenches, stepped and bridge. According to its applications, except railway rails, there are crane rails, tram rails, forests and mining rail, elevator guide rails, tunnels and coastal wear and corrosion resistant composite rail and high-manganese steel rails for turnout Wait.

Since 1962, France, the United States, Japan and other countries have adopted basic oxygen furnace smelting steel rail. China uses open-hearth and basic oxygen furnace smelting. General need rail rolling after slow cooling to eliminate white spots. To shorten the process, vacuum degassing and other processes can also be used, thereby eliminating the slow cooling.

Any question about steel rail please feel free to contact us:
Email: admin@satrise.com
Tel: +86-17093757606
Web: www.srrail.com

The development of steel rail

Each country railway rail in the early 20th century can weigh no more than 50kg / m, mostly used current national 60kg / m above the steel rail. The most important use of the US rail weight 77kg / m, the Soviet Union was 75kg / m. Improve the use of heavy rail is an economical rail service life and effective means. For greater than 30 million tons of shipping, the maximum driving speed greater than 120km / h for heavy rail, the rail by the 50kg / m change of 60kg / m, although steel consumption increased by 18%, but the traffic increase by 50% life can be extended by 70%. States under specific conditions using different methods to improve the wear and pressure ulcer steel, fatigue fracture properties. The Soviet Union, the United States, Japan and other countries mainly on the basis of the original carbon-manganese steel rail end and a total length of rail surface hardening and hardening heat treatment methods to tap potential. Full length hardened rail service life increased by 2 to 3 times as much carbon rails. Some Western European countries have adopted the alloying. Such as the Federal Republic of Germany with a Cr-V rails (C0.55 ~ 0.75%, Mn0.8 ~ 1.3%, Cr0.8 ~ 1.3%, V≤0.3%), the UK rail Mn-Cr (C0.15%, Mn1. 25%, Cr1.15%). From 1965, China began to produce low alloy rail with copper (Cu0.2 ~ 0.4%) of the rail, manganese (1.1 to 1.5%) of the rail and the like. Manganese rails abrasion better life increased by 2 times as much carbon rails.

We not only supply all kinds of heavy steel crane rail, also provide rail parts and accessories including joint connection parts and intermediate coupling parts. For example Timber Sleepers, spikes, rail pads, tie plates, gauge rods - with single or double jaw, spring, Fish Plates, joint bars, bolts, spring, washer.

Any question pls feel free to contact us:
Email: admin@satrise.com
Tel: +86-17093757606
Web: www.srrail.com

The Classification of Steel Rail

Steel Rail is generally divided into three levels according to the tensile strength, that is, the general standard rail (tensile strength of 70 - 85 kgf/mm2), wear-level rail (tensile strength of 90 - 105kgf / mm2) and extra rail (tensile strength 110 - 125kgf / mm2). 

The chemical composition of the steel rail, strength and elongation must meet the standard requirements, in addition to be hammer, metallurgical, low times, check hardness testing and surface quality and dimensional deviations. The world's first rail is manufactured with a carbon content of 0.3 to 0.4% carbon steel. Carbon rail States currently still widely used, but the steel carbon content gradually increase (C0.5 - 0.8%). In some steel manganese content also increased (Mn0.6 - 1.0%). China's heavy rail steel standard component: C0.67 - 0.80%, Si0.13 - 0.28%, Mn0.7 - 1.0%, P≤0.04%, S≤0.05%, with the rolling stock axle load, vehicle speed and increase in traffic in improving rail weight per unit length, developed alloy rails, improve rail production technology and product quality has also continued to make progress.

steel rail for sale

We not only supply all kinds of heavy steel crane rail, also provide rail parts and accessories including joint connection parts and intermediate coupling parts. For example Timber Sleepers, spikes, rail pads, tie plates, gauge rods - with single or double jaw, spring, Fish Plates, joint bars, bolts, spring, washer.

Any question pls feel free to contact us:
Email: admin@satrise.com
Tel: +86-17093757606
Web: www.srrail.com

Connectors: Rail Joint Bars for sale

Joint bars and bolts are used to fasten rails together. Tie plates and spikes attach rails and ties to produce track. Compromise bars join rails of unequal size.

Joint Bars

Illustrated are the three types of standard joint bars which are currently in service. Six-hole joint bars are provided for all crane rail and new tee rail sections over 100-lb. per yard. New rail 100-lb. per yard and less is furnished with four-hole joint bars. All relay rail is supplied with matching joint bars.

Compromise Joints

Heat-treated compromise joints are used to connect and align rails of unequal size and drilling. A standard bar is re-formed by a custom forging process in both the vertical and horizontal planes so that the gage and running surfaces of the joined rails are in true alignment.
Satrise Industry can also supply compromise weld joint kits or shop-fabricated transition rail joints as suitable alternates to the standard joint.

Tie Plates

Tie plates fasten the rail to the tie and maintain gage and alignment of rails in track. New double shoulder tie plates are available for 5-1/2" and 6" base rail and are manufactured according to AREA specifications. Used double shoulder tie plates can be supplied to fit most rail bases. New single shoulder tie plates are no longer available, but they can be furnished as used and will fit any rail section.

Bolts

Crane rail bolts are medium carbon, heat treated per ASTM specification A-325 and are shipped complete with heavy hex nuts and lockwashers. Tee rail requires standard button-head oval-neck track bolts with heavy square or hex nuts. Lockwashers are furnished on request.

Spikes
Track spikes are produced from hot rolled steel bars and are shipped in 200-lb. kegs. Satrise Industry also maintains a complete inventory of screw spikes, drive spikes and boat spikes.

Contact us:

Email: admin@satrise.com
Tel: +86-17093757606
www.srrail.com

History of Fishplate

The first railway fishplate,
patented by William Adams and Robert Richardson in 1847

Fishplate was invented by William Bridges Adams, in May 1842, because of his dissatisfaction with the scarf joints and other systems of joining rails then in use. He noted that to form the scarf joint the rail was halved in thickness at its ends, where the stress was greatest. It was first deployed on the Eastern Counties Railway in 1844, but only as a wedge between the adjoining rails. Adams and Robert Richardson patented the invention in 1847, but in 1849 James Samuel, the engineer of the ECR developed fishplates that could be bolted to the rails.

In steel rail terminology, a fishplate, splice bar or joint bar is a metal bar that is bolted to the ends of two rails to join them together in a track. The name is derived from fish, a wooden bar with a curved profile used to strengthen a ship's mast. The top and bottom edges are tapered inwards so the device wedges itself between the top and bottom of the rail when it is bolted into place. In rail transport modelling, a fishplate is often a small copper or nickel silver plate that slips onto both rails to provide the functions of maintaining alignment and electrical continuity.

Fishplate by Satrise Industry

Any question please feel free to contact us:
Email: admin@satrise.com
Tel: +86-17093757606
www.srrail.com

Crane Rail Clips, Rail Clips, Rail Clamp

Rail Clips by Satrise Industry

Rail clip is also called rail clamp. It is a part of rail fastening systems, belongs to rail parts.

The Soft and Adjustable Rail Clip Solution for Crane Railways.

For over 20 years Satrise has been providing engineered, adjustable soft-mount crane rail solutions for all types of crane tracks and runways for rail-mounted equipment in the toughest environments and highest duty cycles.

Satrise clip range can accommodate nearly every rail profile produced in the world, including DIN Rail, MRS Rail, ASCE or “T” Rails and US Crane Rail sections, used either with or without crane rail pad. Two main clip types are available, based on the fixing support: either welded-base or through-bolted. Satrise offers clips for use with both imperial and metric hardware, and in both single-bolt and double-bolt configurations for all types.

Satrise crane rail clips maintain the rail lateral position but allow for needed longitudinal movement through the use of the vulcanize-bonded rubber nose. The nose helps absorb the energy of vertical deflection caused by wheel passes.

Satrise crane rail clips are manufactured throughout the world, with primary manufacturing in North America and Europe.

Satrise Boltable Rail Clips include the Stelcam™ Series and 3226 Series for imperial hardware, and the 41 Series, 51 Series and 71 Series for metric bolts.

Weldable Rail Clips include the Weldlok™ Series, supplied with imperial hardware, and the 21 and 22 Series weldable clips with metric bolt assemblies. Lower components are weldable forged steel.

Backed by our legendary engineering support, years of superior customer service and miles of installed rail and support systems around the globe, we can help you choose the right rail solution to meet your requirements.

Any question pls feel free to contact us:
Email: admin@satrise.com
Tel: +86-17093757606
www.srrail.com

Rail fastening system, Rail Clips for sale

Rail fastening system

A rail fastening system is a means of fixing rails to railroad ties (United States) or sleepers (international). The terms rail anchors, tie plates, chairsand track fasteners are used to refer to rail parts or all of a rail fastening system. Various types of fastening have been used over the years.

Rail Clips

A variety of different types of heavy-duty rail clips are used to fasten the rails to the underlying base plate, one common one being the Pandrol fastener (Pandrol clip), named after its maker, which is shaped like a stubby paperclip. Another one is the Vossloh Tension Clamp.

The newer Pandrol fastclip is applied at right angles to the rail. Because the clip is captive, it has to be installed at the time of manufacture of the concrete sleeper.

We not only supply all kinds of heavy steel crane rail, also provide rail parts and accessories including joint connection parts and intermediate coupling parts. For example Timber Sleepers, spikes, rail pads, tie plates, gauge rods - with single or double jaw, spring, Fish Plates, joint bars, bolts, spring, washer.

Any question pls feel free to contact us:
Email: admin@satrise.com
Tel: +86-17093757606
www.srrail.com

Crane Rails for sale, QU80 cane steel rail specifications

QU80 crane rail

Crane rails are designed for carrying heavy loads and are used in a wide variety of applications. There are five American crane rail sections ranging from 104 to 175 lb per yard. This section also includes the European crane rail sections from A45 to A150. You can find a weight and measure conversion table on our website: www.srrail.com

Note: Different types of steel rail
* Steel Rail’s type is roughly quality kg per one meter.
* At present, China's railway rail type mainly has 75 kg/m, 60 kg/m, 50 kg/m and 43 kg/m,38kg/m,24kg/m,. rail length has 6m, 6.5m, 9m, 9.5m, 10m, 10.5m, 12m, 12.5m and 25m;
* Light rail specifications from 4kg to 30kg, materials are 55Q / Q235;
* Heavy rail specifications from 38kg to 60kg, materials are U71Mn / 50Mn, etc;
* Crane rail specifications QU70, QU80, QU100, QU120, material U71Mn / 75V.

Contact us:
Email: admin@satrise.com
Tel:86-371-55610860 Fax:86-371-63382829
Add: Rm. 2204, No. 8, CBD, Zhengzhou, Henan, China (Mainland)
www.srrail.com

80-lb crane rail specifications