黄土隧道塌方处理技术

Techniques for the Treatment of Collapse Inside Yellow-Soil Tunnels

山西某黄土隧道由于设计与施工过程中的问题遭遇塌方,分析了该黄土隧道的塌方原因,并提出了有针对性的处理措施,即洞外取渣回填夯实反压,拱部加固变形拱架加喷锚砼,空洞部分先用圆木支立井字撑、然后注浆并封闭等。采用该方法成功通过了塌方段,表明该处理方法是成功的。

Owing to the fact that collapse is faced with in the processes of design and construction of a certain yellow-soil tunnel in Shanxi province,the causes of the collapse of the yellow-soil tunnel are analyzed in the paper,with some corresponding treating measures put forward,which include getting slag from outside the tunnel to backfill,compacting it to counter the pressure,strengthening the deformed arch with jetted concrete with anchor bars provided,using logs,in the form of #,to support the hollow sections,then filling and slip-casting them with concrete and finally sealing them,etc.By the above-mentioned methods,the excavation of the tunnel is successfully performed in the collapsing sections,which proves that the treating methods adopted are effective and successful.