Potential shaft lengths of complex shafts in case of a vadose zone thickness of 500 m if the shaft sections along bedding plane and fracture developed in a zone with a thickness of 50-50 m.

Table 5: Potential shaft lengths of complex shafts in case of a vadose zone thickness of 500 m if the shaft sections along bedding plane and fracture developed in a zone with a thickness of 50-50 m.

α₁	α₂	f.a.h.	α₂	f.a.h.	α₂	f.a.h.	α₂	f.a.h.
α₁	10^°		20^°		30^°		40^°
30^°	1970.59	3.94	1235.29	2.47	1000.00	2.00	890.62	1.78
40^°	1861.21	3.72	1125.91	2.25	890.62	1.78	781.24	1.56
50^°	1795.27	3.59	1059.97	2.12	824.68	1.65	715.30	1.43
60^°	1757.95	3.51	1022.65	2.04	787.36	1.57	677.98	1.36
70^°	1736.55	3.46	1001.25	2.00	765.56	1.52	656.58	1.30
80^°	1725.69	3.45	990.35	1.98	755.10	1.51	645.72	1.29
90^°	1720.59	3.44	985.29	1.97	750.00	1.50	640.62	1.28

α₁ : Inclination of fracture and fault; α₂ : Bed inclination; f.a.h.: Specific shaft length.