FIELD: mining.
SUBSTANCE: method for tunnelling of vertical shafts in watered unstable rocks includes freezing of rocks, blast-hole drilling, mechanised loading of rocks, fixation of shaft with cast iron tubes and further plugging of clamping space. In process of blast-hole drilling, zones of mine position are determined with permissible limit force of elastic waves action at freezing columns relative to border of two rocks contact with various physical-mechanical properties. Afterwards, rocks are damaged in these zones in mode, which provides for values of stress in freezing columns developed by elastic waves, equal or less than maximum permissible value.
EFFECT: invention prevents rupture and deformations of freezing columns, increased reliability of shaft ice wall.
4 cl, 4 dwg
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