Research Article

Deflection Mechanism and Safety Analysis of Coal Mine Shaft in Deep Soil Strata

Table 4

Actual parameters of shaft lining in the soil section.

z (m)Strength gradeEc (×104 MPa)fc (MPa)Dn (mm) (mm)

0∼100C303.0014.361007200
100∼210C403.2519.1
210∼247C403.2519.164007800
247∼300C503.4523.1
300∼340C553.5525.3
340∼370C603.6027.5
370∼400C503.4523.170009000
400∼446C553.5525.3
446∼498C603.6027.5
498∼545C653.6529.79300
545∼595C703.7031.8