摘要
南昆线草庵隧道DIK752+869～890段涌水坍方频繁,形成进进、退退拉锯式涌水,坍方的局面,7个月只往前掘进了19m,曾引起各方的关注。采用深孔预注浆、锚喷格栅支护,通过了涌水坍方地段,充分显示了注浆止水及新奥法在隧道施工中的威力。
Gushing water and collapse occur frequently within Caoan Tunnel on Nanriing - Kunming Railway Line at DIK 752 - 869 - 890, so only 1C m has been advanced for 7 months. By using the method of deep hole pregrouting, anchor, shotcrete and lattice girder, this section of collapse and gushing water has been excavated. It proves sufficiently that grouting and NATM plays an important role in tunnel construction .
出处
《世界隧道》
1999年第2期52-56,36,共6页
关键词
涌水
坍方
深孔预注浆
铁路隧道
Gushing Water in Tunnel
Collapse
Deep Hole Pregrouting
