隧洞侧开挖水仓形成排水系统的施工方案

Construction Scheme of Drainage System by Excavating Water Sump on the Side of the Tunnel

施工排水对隧洞施工尤显重要,特别是斜井施工,完善的排水系统是隧洞正常施工的保障,合理的排水方案不仅能够节约成本、缩短工期,还可以改善施工环境。文中主要介绍了小浪底引黄工程9#支洞已开挖洞段发生突水的解决方案,并对水仓开挖期间的原线路保护、爆破方式选择和资源配置作了详细介绍。

Drainage is very important to tunnel construction, especially inclined shaft construction. Sound drainage system is the guarantee of normal tunnel construction. Reasonable drainage scheme not only saves the cost and shortens the construction period,but also improves the construction environment. Water inrush solutions in excavated section of9# branch tunnel in the Xiaolangdi Yellow River Diversion Project were introduced. The primary line protection,blasting method selection and resource allocation during water sump excavation were detailed introduced.