Table 5 Support design scheme and parameters.

From: Research on the mechanism and technology of close range coal seam support and roof cutting collaborative lane control

Region

Design scheme

Design parameters

Roadway-side supporting

Concrete-filled steel tube pillar

Q235 seamless steel pipe, size Φ299 × 10 mm, theoretical bearing capacity of the pillar 4624kN (can not be lower than the theoretical value of the abutment pressure of the supporting body beside the roadway 3432 kN), filling core concrete C40, spacing 800 mm

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