FIELD: mining.
SUBSTANCE: method of tunnel building includes the following operations: soil development and its transportation, support of mine workings at driving with shotcrete, probably with anchors, arcs and net, geophysical measurement of rock density in bottom-hole zone, which results are used for correction of length of planned driving and thickness of layer of shotcrete in order to speed-up driving and to reduce shotcrete flow rate.
EFFECT: accident prevention, possibility of correction of driving method in order to speed-up it and correction of structure of temporary support in order to improve its efficiency, improving safety of underground operations.
2 cl, 5 dwg
| Title | Year | Author | Number |
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| TUNNELLING COMPLEX | 0 |
|
SU1817815A3 |
