摘要
文章通过对小密隧道软岩地段初期支护侵限的地质原因和施工原因进行分析,采用反压回填、三台阶临时仰拱施作、超前导管注浆相结合的处理方案进行施工,从而顺利通过该地段,确保了小密隧道的顺利贯通。实践证明,在软岩侵限地段采用这种处治措施是行之有效的。
Based on Xiaomi soft rock tunnel primary support section of this paper analyzes the causes of contamination limit and construction,Use the back pressure backfill,three steps and temporary inverted arch,the method of combining the advanced tube reinforcement of surrounding rock,ensure that the Xiao mi tunnel pass the area smoothly.Practice has proved that the treatment technology in soft rock invasion limit the application of the treatment process is effective.
出处
《企业技术开发》
2015年第1期34-36,共3页
Technological Development of Enterprise
关键词
变形侵限
拆换
监控量测
deformation contamination
limit change
monitoring measurement
