Roof presplitting blasting construction method
The invention discloses a roof presplitting blasting construction method, and relates to the technical field of roof presplitting blasting. The roof presplitting blasting construction method comprises the following steps that S1, roof drilling is constructed according to the position of a blasting r...
Gespeichert in:
Hauptverfasser: | , , , , , , , , , , , , , |
---|---|
Format: | Patent |
Sprache: | chi ; eng |
Schlagworte: | |
Online-Zugang: | Volltext bestellen |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | The invention discloses a roof presplitting blasting construction method, and relates to the technical field of roof presplitting blasting. The roof presplitting blasting construction method comprises the following steps that S1, roof drilling is constructed according to the position of a blasting rock layer; s2, secondary coal mine allowable emulsion explosives are loaded into the top plate drill hole; s3, slurry stirring and pumping equipment is installed; s4, a first bag is installed in the top plate drill hole to block gushing water; s5, a second bag is installed in the top plate drill hole to conduct lower layer blocking on the top plate drill hole, and a pouring cavity without water burst is formed between the first bag and the second bag; s6, slurry is pumped into the pouring cavity, so that the pouring cavity is filled with the slurry; s7, dismounting slurry stirring and pumping equipment; and S8, after the slurry is solidified, detonating the second-level coal mine allowable emulsion explosive for bl |
---|