POWERED SUPPORT FOR STEEP SEAMS Russian patent published in 2008 - IPC E21D23/00 

FIELD: mining.

SUBSTANCE: invention relates to the coal industry, in particular to the powered support systems for slopes in the excavation of minerals. It provides means to improve the stability and flexibility of a support in a steep pitch seam. Said support comprises base supporting structure and linear supporting units. Each linear supporting unit comprises hydraulic props (2) with roof bar (1), shoe (8) and hydraulic advancing cylinder (11). The base structure is divided into base supporting units each of them comprising face side wall (12) and goaf side wall (15) with hydraulic strutting prop (13) and base supporting unit roof bar (16), liners (7) to connect the face side (12) and goaf side (15) walls over the seam floor. The hydraulic prop (2) of the linear supporting unit is provided with a support plate (3) and attached to an arched structure (4) with roller slides (5). Said roller slides (5) are arranged capable of moving inside the base supporting unit liners (7) to fix a linear supporting unit while its unloading and advancing in strictly normal position with respect to the seam. At the foot of each base supporting unit there are hydraulic adjusting cylinders (14) capable of strutting against an underlying loaded base supporting unit to move said unit up-dip one by one, starting from the upper unit.

EFFECT: improving the stability and flexibility of supports in a steep pitch seam.

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