齐岳山隧道F11断层注浆截水帷幕施工技术  

Construction Technology of Grouting Water-seal Curtain for Fault 11 in Qiyueshan Tunnel

作　　者：卢炜[1] 汪玉华[2] 

机构地区：[1]中国中铁股份有限公司,北京100039 [2]中铁隧道集团有限公司,河南洛阳471009

出　　处：《铁道工程学报》2011年第7期88-93,共6页Journal of Railway Engineering Society

摘　　要：研究目的:山岭隧道在穿越断层破碎带时,经常会遇到高压水,如处理不当,往往会引起突水突泥、坍方甚至泥石流的严重威胁,给施工安全造成极大的威胁,施工进度也无法保证,严重时,还会使周围生态环境发生恶化。因此在隧道穿越该区域时,必须采取一种有效措施来确保施工安全及周边生态环境免遭破坏。研究结论:齐岳山隧道在穿越F11断层高压富水带时,在该段钻孔过程中,单孔最大涌水量达到1 800 m3/h,水压高达3.2 MPa,给施工带来巨大风险。在施工过程中,按照"以堵为主,限量排放"的原则,采用硫铝酸盐水泥单液浆、普通水泥单液浆、普通水泥-水玻璃双液浆,通过合理匹配注浆参数,精心组织施工,对掌子面前方的高压富水地段进行了注浆封堵,形成一道截水帷幕,同时对前方破碎围岩进行了有效加固,为施工创造了条件,确保了隧道施工安全及周边生态环境不被破坏,对今后类似工程具有重要的指导意义。Research purposes： When the mountain tunnel cuts through the fault -fracture zone, the high pressure water often emerges. If the reasonable measures are not taken, it will frequently induce the water and mud inrush and collapse, even induces the debris flow, which will seriously threaten the construction safety and delay the construction progress. It will deteriorate ecological environment in the worse situation. So the effective measures s.hould be taken for the construction safety and the ecological environment protection when the tunnel cuts through the high pressure and enriched water region of fault - fracture zone. Research conclusions：As the Qiyueshan Tunnel cut through the high pressure and enriched water region of the Fault 11, the maximum volume of water inrush and the water pressure during boring stage were up to 1 800 m3/h and 3.2 MPa respectively and it brought out the big construction risk. According to the principle of ＂Taking water blocking as the main factor with the water draining in limitation＂ , the mixed slurry of the sulphate aluminium cement single - fluid slurry, common cement single -fluid slurry, and cement and sodium silicate mixed slurry with the rational proportioned parameter of mixing slurries during the construction progress was used for blocking the water in the high water pressure and enriched water area ahead of the working face and the high pressure water was effectively controlled with the water - seal curtain. Meanwhile the crushed surrounding rocks in front were reinforced. It paved the way for the construction safety and the surrounding ecological environment protection and could be as the reference to similar works in the future.

关 键 词：断层 高压富水 注浆 截水帷幕 

分 类 号：U25[交通运输工程—道路与铁道工程]