隧洞开挖掌子面多孔高压涌水施工技术

Construction technique of drift face excavation with multi orifice high pressure gushing water

文章结合东湖输水隧洞开挖掌子面多孔高压涌水的实际情况,重点介绍承压水减压及掌子面系统超前预注浆的涌水治理原则、施工工艺的制定过程及施工方法,运用该施工技术顺利地通过F42断层影响带,取得了良好的工程效果。希望能为类似工程提供借鉴。

Combined with the actual situation of multi orifice high pressure gushing water on drift face in excavation of Donghu water-conveyance tunnel,the paper emphatically introduces the decompression of confined water and the treatment gushing water principle of the advance pre-grouting of the drift face system,formulation process of construction technology and construction method.The project construction successfully passes the F42 fault influence belt by using the technique,and achieves good engineering results.