Construction method for mining access non-underholing type blasting
The invention relates to a construction method for mining access non-underholing type blasting. The invention relates to a mining access non-slotting type blasting construction method, which comprises the following steps of: (1) constructing a cutting undercutting roadway along the trend of a stope,...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to a construction method for mining access non-underholing type blasting. The invention relates to a mining access non-slotting type blasting construction method, which comprises the following steps of: (1) constructing a cutting undercutting roadway along the trend of a stope, and carrying out cemented filling on the cutting undercutting roadway; (2) after the cemented filling body reaches the required consolidation strength, constructing a blast hole by taking the cemented filling body as a working platform; (3) the blast holes are filled with explosives, non-underholing inter-row or inter-hole millisecond blasting is carried out, and ore removal is carried out after blasting until a mining access is tunneled to the boundary of the other end of the stope; (4) carrying out cemented filling on the mining drift; and (5) repeating the steps (2)-(4), and after stoping of the whole stope is completed, performing roof-contacted filling treatment on the uppermost mining access road. The mining |
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