Research Article

Research on the Technology of Small Coal Pillars of Gob-Side Entry Retained in Deep Mines Based on the Roof Cutting for Pressure Unloading in the Lower Key Stratum

Table 1

Illustrative table of support sections of the gob-side entry retained.

Cross section17.88 m2Anchor nameRebar resin anchorsQuantity of anchor rods16.9 (m)

Net cross section16.69 m2Specification for roof anchorsMSGLW-500 22/2200 mmAnchor ropes
Spacing: 1900 mm
ShapeTrapezoidalGang anchor specificationsMSGLD-500 20/2200 mmAnchor ropes pallets
SlopeDesign slopeRow spacing950 mmRoof metal meshLW50/4-SZ
Steel beltsT-shapedAnchor rods palletsAnchoring agentRoof: MSCKb2350, MSCK2370
Gangs: MSCKb2370
Top anchor cable: MSCKb2350, MSCK2370