CIRCULAR SECTIONAL SUPPORT (VARIANTS) Russian patent published in 2004 - IPC

Abstract RU 2229604 C1

FIELD: support of mine workings in process of their forcing-through, breakdown and removal of rock. SUBSTANCE: circular sectional support that supports mining working in rock includes bearing circular sections with ordinary outer wall, circular flanges with holes, load-bearing and connecting threaded bar members. Load-bearing members of sections come in the form of assemblage of crossing uniformly distributed spiral and circular ribs attached to outer wall and circular flanges. Spiral ribs are set with inclination angles of 15-35 degrees with generating line of outer wall. Spiral and circular ribs of load-bearing members, circular flanges and outer wall are formed from layers reinforcing bands made of unidirectional filaments properly oriented in them, bands are located in outer wall with inclination angles with generating lines between 70 and 88 degrees. Bands are produced from glass, basalt or carbon fibers or their combination with linear density of 330-2500 texes and polymer binder carrying epoxy in volumetric ratio lying in limits from 1:0.2 to 1:0.5 and reduced surface density of material 25.0-55.0 kg/sq m. EFFECT: enhanced functional reliability of support, reduced time of assembly operations and convenient attendance. 25 cl, 13 dwg

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RU 2 229 604 C1

Authors

Sukhanov A.V.

Popov V.G.

Kaledin V.O.

Kozlov S.N.

Egorov S.A.

Gubanov A.L.

Dates

2004-05-27Published

2002-11-19Filed