Introduction of U-channel Steel Support For Coal Mine
U channel steel support cross section is shaped like the letter "U"
in English. National production of u-shape cross-section shape,
geometric parameters and material is different, at present
China''''s production of u-shape model mainly include stepping,
U25, U29, U36 these four. The stepping and U25 waist position; U29,
U36 belongs to the ear. Stepping up the carrying capacity is very
low, now rarely production.
U channel steel support with high initial supporting force,
supporting intensity big, easy to install and is not easy to
deformation, so often used in the manufacture of roadway yielding
metal stents, mine, mine roadway secondary supporting of roadway,
and mountain tunnel support support purposes
Use, effectively reduce the roof caving u-shape set, help such as
accidents, safe and reliable, and enhances the stability of the
mine ventilation system. Choose u-shape flexible support, better
solved the difficult problem of the excavation support
Structure of U-channel Steel Support For Coal Mine
Top beam is circular arch, its amount depending on the cross
section of roadway with different sizes, support force,
transportation conditions, section 1 and section number.
There are three kinds of back leg , one kind is upside for circular
arc form, for straight line at the bottom; The second is all for
the curved shape, and only one radius of curvature; The third is
all for the curved shape, but there are two curvature radius. Back
leg in welding under the base, the base of large plate on the hard
Fitting is a support section and internode card device, can the
internode connection effect, can also be connected the two
compression steel joint parts, provide pre-tightening force, make
the u-shape between friction, thereby ensuring that the arch has a
certain resistance and certain drop-off.
4.Rod between support
Rod between support is to enhance the relative stability, the
support bracket from longitudinal connection, form a whole.
Back-up material is u-shaped steel support between supports and
surrounding rock filling material, the purpose is to make contact
with the surrounding rock u-shape set close together, improve the
stress of the support, to improve the bearing capacity and maintain
the stability of surrounding rock.
Characteristic of U-channel Steel Support For Coal Mine
1,Stand high pressure , support long time, easy to installation and
not easy to be out of shape
2,compared with other rigid support , U-shaped steel support has a
scalable and reliable carrying capacity to adapt to load and
deformation of soft rock.
3,U-shaped steel support bracket support cross back high
utilization convenient small amount of maintenance.
4,U3 steel support recycling reuse rate, reduce prop use, very
obvious environmental benefits.