Technology of eliminating outburst by downward drilling in highground pressure and serious outburst area
The high-drainage roadway construction face of the working face is used to pre-drill the borehole under the tunneling face, and the problem of poor water return in the hole is solved by grouting the surrounding rock cracks in the deep and shallow holes of the drill floor. The “two plugs and one note...
Main Author: | Yi Enbing |
---|---|
Format: | Article |
Language: | English |
Published: |
EDP Sciences
2021-01-01
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Series: | E3S Web of Conferences |
Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2021/21/e3sconf_aeecs2021_01021.pdf |
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