某隧道注浆治理突泥涌水效果分析

Effect analysis of grouting treatment for water inrush and mud outburst of a tunnel

为解决突泥涌水带来的安全问题,本文以湖北省平阳隧道为研究背景,提出突泥涌水的治理原则为“以堵为主,限量排放,防突防涌”,并运用数值模拟软件FLAC3D对注浆(治理关键环节)进行了模拟分析。结果表明:注浆前顶板位移为87 mm,注浆后位移减少至27 mm。其结果说明采用注浆治理方案可取得较好效果,最后通过实际工程监测数据证明注浆后隧道位移处于稳定状态。

In order to solve the problem of safety accidents caused by water inrush and mud outburst,in this paper,Pingyang tunnel in Hubei province is taken as research background,and the governance principle for water inrush and mud outburst is put forward as‘blocking mainly,limiting emission,preventing the inrush and outburst’.Grouting is the key link in the governance measures,its simulation analysis is conducted using numerical simulation software Flac3D.The results show that the displacement of roof before grouting is 87 mm,and the displacement after grouting is reduced to 27 mm,indicating that the grouting scheme has played a good effect.In the end,the actual engineering monitoring data show that the displacement of tunnel after grouting is in a stable state.