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...

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Bibliographische Detailangaben
Hauptverfasser: DENG ZHIGANG, YANG CHAO, MO YUNLONG, TU QI, DONG YADONG, LIU TING, WEI XIAOHU, BI HUIJIE, WANG HONGWEI, LI SHAOGANG, XIANG MIN, WANG JIANDA, GAO HAORUI, GUO XIAOHU
Format: Patent
Sprache:chi ; eng
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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