摘要
祁连山某越岭隧道出现突涌水(泥、石)、软岩大变形等地质问题,采用了地表调查、地表水露头调查、地表物探、超前水平钻探、涌水量监测、地质编录、TSP预报及地应力测试等洞内外综合施工地质勘察方法,查明了该隧道突涌水(泥、石)和围岩变形段的地质条件和水文地质特征,以及施工地质问题产生的原因,研究了突涌水(泥、石)形成机理。针对突涌水(泥、石)提出掌子面正面封堵、右侧高位泄水、左侧迂回平导的综合处理措施;软岩大变形采取加强初期支护、长锚杆、增加二衬强度等措施。
The geological problems of the sudden water inflow(mud,stone),large deformation,etc.appear in the tunnel through Qilianshan mountain.The synthetic approach of construction geological survey,such as surface investigation,outcrop investigation of surface water,geophysical prospecting,advanced horizontal drilling,monitor of gushing water,geological record,forcast of TSP and test of crustal stress etc.is adopted,the geological conditions and hydrogeology features of the sudden water inflow(mud,stone)and surrounding rock deformation section and the cause of geological problems in construction are found out,the formation mechanism of sudden water inflow(mud,stone)is studied.According to the sudden water inflow(mud,stone),the comprehensive treatment measures,such as plugging in the front of tunnel face,highstand water release on righ,detour parallel guide-pit on left are proposed;The large deformation adopts reinforced support,long anchor and?strengthening the secondary lining.
作者
陈元元
CHEN Yuanyuan(China Railway First Survey and Design Institute Group Co.,Ltd.,Xi’an 710043,China)
出处
《高速铁路技术》
2018年第S02期111-117,共7页
High Speed Railway Technology
关键词
隧道施工
地质问题
突涌水
地质勘察
处理措施
tunnel construction
geological problems
sudden water inflow
geological survey
treatment measures
