摘要
【目的】隧道在穿越采空区施工时容易出现由于开挖扰动造成的大变形、塌方等灾害,因此有必要对采空区地质灾害的探测及处置技术进行研究。【方法】本研究以赣深铁路同乐山三号隧道为背景,对施工中出现的问题进行归纳总结。【结果】研究表明:在采空区地段采用“地面调查法+高密度电阻率法+钻探法”为主的综合探测手段,可以取得很好的效果;地表矿洞采用回填注浆封堵,洞内采用超前支护+径向注浆处理,可以保证隧道安全顺利地通过不良地质段。【结论】本研究成果可为今后类似工程提供施工参考。
[Purposes]The tunnel is prone to large deformation,collapse and other disasters caused by ex-cavation disturbance during construction through goaf,so it is necessary to study the detection and dis-posal technology of geological disasters in goaf.[Methods]Based on the background of Tongleshan No.3 Tunnel of Jiangxi-Shenzhen Railway,this study summarized the problems in construction.[Findings]The research shows that the comprehensive detection method based on"ground survey method+high density resistivity method+drilling method"can achieve good results in the goaf area.The backfill grout-ing is used to seal the mine tunnel on the surface,and the advance support+radial grouting is used in the tunnel to ensure that the tunnel passes through the bad geological section safely and smoothly.[Con-clusions]The research results can provide construction reference for similar projects in the future.
作者
孙斌
SUN Bin(China Railway 12th Bureau Group Second Engineering Co.,Ltd.,Taiyuan 030032,China)
出处
《河南科技》
2023年第10期67-70,共4页
Henan Science and Technology
关键词
隧道
穿越
采空区
探测手段
处置技术
tunnel
crossing
goaf
detection means
disposal technology
