摘要
成昆铁路复线某隧道在修建过程中,2号横洞遭遇砂化白云岩突涌,涌砂量达到10000 m 3。为保证施工安全和施工进度,需采取绕行方案,其中绕行线路和绕行切入点十分关键。通过地表与洞内物探相结合的综合物探技术,分别采用音频大地电磁法和瞬变电磁法对突涌区进行探测,综合探测资料有效地指导了绕行方案的选取,成功避开了突涌区。
During the construction of a tunnel of the Chengdu-Kunming railway,the tunnel 2#adit encountered a sand-forming dolomite outburst and the sand-gushing volume reached 10000 m 3.A detour scheme should be adopted in order to ensure the safety and progress of construction.The detour line and detour pointcut are very critical.Audio magnetotelluric method and transient electromagnetic method are respectively adopted to detect the inrush area through the combination of surface and in-hole geophysical exploration.It is effective to guide the selection of detour scheme and successful to avoid the inrush area.
作者
曹强
Cao Qiang(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China)
出处
《山西建筑》
2021年第9期132-134,共3页
Shanxi Architecture
关键词
岩溶隧道
砂化白云岩
音频大地电磁
瞬变电磁
绕行方案
karst tunnel
sand-forming dolomite
audio magnetotelluric
transient electromagnetic
detour scheme
