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盾构隧道端头土体加固是盾构施工的重要环节,水平注浆加固作为土体加固的一种重要方法,有效解决了因空间原因不能进行垂直旋喷加固的问题。以沈阳地铁二号线岐山路站—沈阳北站盾构区间端头土体加固工程为例,该盾构隧道端头采用了二重管水平注浆加固方案,有效解决了因城市地下管线密集,不能进行垂直旋喷加固的问题,并取得了较好的加固效果和经济效益。
Shield soil reinforcement at the tip of shield tunnel is an important part of shield construction. Horizontal grouting reinforcement is an important method of soil reinforcement, which effectively solves the problem that vertical spout reinforcement can not be carried out due to space reasons. Taking the reinforcement of the soil at the end of shield tunnel at Qishan Road Station - Shenyang North Station in Shenyang Metro Line 2 as an example, the double pipe horizontal grouting reinforcement scheme is adopted at the end of the shield tunnel, which effectively solves the problem of underground grouting , Can not be carried out vertical spray jet reinforcement problems, and achieved good reinforcement and economic benefits.