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Section under development

Shaft details

Diameter :          14 ft (4.4 m)

Alignment :        NE-SW

Separation :        95 yd (87 m)

Depth :

  • North 
    • 1877:      520 yd (475 m)
    • 1955:      590 yd (539 m)
  • South  
    • 1879:      512 yd (468 m)
    • 1922:      903 yd (826 m)

Construction :

  • North 
    • 18 yd (16.5 m):   @ 18in (46cm) brickwork
    • 117 yd (107 m):   @ cast iron tubbing
    • remainder:        @ 9in (23cm) red brick
  • South 
    • ?18 yd (16.5 m):   @ 18in (46cm) brickwork
    • ?117 yd (107 m):   @ cast iron tubbing
    • remainder:        @ 9in (23cm) red brick

Running-on level :  (above Ordnance Datum)

  • North (1950)
    • top deck:      521 ft (159 m)
    • bottom deck:   514 ft (157 m)
  • South (1950)
    • top deck:      521 ft (159 m)
    • middle deck:   514 ft (157 m)
    • bottom deck:   507 ft (154 m)

Shaft cables

  • Power:           3,300 Volt,  3 phase
    •                    3 core, double wire armoured 
  • Signal:           intrinsically-safe low voltage
    •                    multi-core, double wire armoured 
  • Telephone:     intrinsically-safe low voltage
    •                    multi-core, double wire armoured 
  • Telemetry:     intrinsically-safe low voltage
    •                      multi-core, double wire armoured 
  • Monitoring:  methane drainage / ventilation quality
    •                   mult-core tube bundle, rubber  armoured

Shaft pipes

  • rising pump main
  • fresh water main
  • methane extraction
  • shaft leakage drain

Sources:

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22 Dec, 2020

at

05:25:12 PM

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