摘要
针对宜万铁路16标段三岔口大断面隧道的特殊复杂地质条件:隧底节理裂隙异常发育,溶蚀严重,岩体破碎夹泥,且有多处不规则岩溶等情况,采用钢花管注浆对隐伏岩溶、溶槽、破碎带进行加固处理,通过注浆钻心取样评定检查,该段基底承载力达到了设计要求,有效避免了雨季施工产生涌水、突泥岩层产状较缓和因岩溶带来的安全隐患.
The tunnel with large section of the 16th Section in YI WAN Railway is in the special geological conditions, including jointing fissure developing abnormally, dissolution being very seriously, the rock mass crushing and many place having abnormity fissure, and so on. To reinforce and treatment these, the special groutings to fissure, solution groove and some place of berak were advised. At last, assessed by samplings, this carrying capacity in fundus reached the design request, and effectively defensed the gushing water, the sudden mud-rock strike-dip moderating production prblem and the hidden trouble of safety.
出处
《重庆交通大学学报（自然科学版）》
CAS
2007年第6期73-76,共4页
Journal of Chongqing Jiaotong University(Natural Science)
关键词
隧道
基底
岩溶
注浆
施工
tunnel
foundation base karst grouting
construction
