Ultra-deep hole pre-grouting pipe for crack-developed surrounding rock and grouting method

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Bibliographic Details
Main Authors GENG MINMIN, ZHAO GUOZHEN, GONG PENG, JIANG ZHONGXI, WANG KUN, MA ZHANGUO, ZHANG XIUQUAN, ZHANG FAN
Format Patent
LanguageChinese
English
Published 16.07.2014
Subjects
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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Bibliography:Application Number: CN20121142705