Application of Hollow Grouting Anchor and Bolt to Pre-Bolting and Late Grouting Support System of Underground Engineering
DONG Qin-kai
SUN Jiu-guang
ZUO Hai-feng
JIANG Xiao
Abstract：According to the reconstruction and reinforcement conditions of the deformation failure in the surrounding rock and support structure of the present each type mine roadway,tunnel,foundation pit and other underground engineering,the paper analyzed the failure mechanism of the engineering and provided the pre-anchoring and late grouting support technology.Thus at the same time of the engi-neering subject construction,a “hollow grouting anchor+grouting bolt+steel mesh+shotcreting (con-crete)”support was applied.When the deformation failure occurred in the surrounding rock and the support structure,according to the deformation failure condition,the grouting and reinforcement was timely conducted.The technology could prevent the repeated anchor and bolt support,could have good technical and economic benefits and could have the promotion and application value.
Keywords：pre-bolting and late groutinggrouting anchorgrouting boltunderground engineering
Publication Date：2016-05-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 22-24 )