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 section
17.88 m2
Anchor name
Rebar resin anchors
Quantity of anchor rods
16.9 (m)
Net cross section
16.69 m2
Specification for roof anchors
MSGLW-500 22/2200 mm
Anchor ropes
Spacing: 1900 mm
Shape
Trapezoidal
Gang anchor specifications
MSGLD-500 20/2200 mm
Anchor ropes pallets
Slope
Design slope
Row spacing
950 mm
Roof metal mesh
LW50/4-SZ
Steel belts
T-shaped
Anchor rods pallets
Anchoring agent
Roof: MSCKb2350, MSCK2370 Gangs: MSCKb2370 Top anchor cable: MSCKb2350, MSCK2370