Monitoring and Analysis of a High-Performance Concrete Shaft Lining: A Case Study

Table 1

The original support parameters of −1114 m to −1124 m shaft lining and the −1120 m ingate of the air intake shaft.

Deep	Support parameter
	Primary support	Second-time support
−1120 m ingate	Bolt type: MSGLW-335/20 × 2000; bolt density: 1 m × 1 m; butterfly tray: 150 × 150 × 10; density of steel mesh: 120 × 120	C30 reinforced concrete, support thickness: 400 mm; outer reinforced: HФ22@250VФ18@250
	Rebar diameter: 6 mm	Inner reinforced: HФ22@250VФ18@250; stirrup: Ф10@500 ∗ 500
−1114 m to −1124 m	No	Ditto