某长江穿越隧道竖井淹井处理技术

某穿江隧道竖井由于开挖施工方法不当及地质条件复杂，发生涌水涌砂导致淹井事故，在大型竖井井架及提升系统安装完毕，吸泥、抓泥设备没有施工场地的情况下，采用地面与井内注浆成功地封堵了涌水通道，固结了涌入井筒内的松散砂，从而保证了淹井事故处理的成功。

Shaft Flooding Control Technology of Tunnel Crossing Yangtze River

Due to improper sinking construction method and complex geological conditions, a shaft of a tunnel project that crosses the Yangtze River is flooded by water, which is preceded by water inflows and sand inflows. Under the prerequisite that heavy shaft frames and hoisting systems have been installed and that there is no space available for the mud-sucking equipment and mud-collecting equipment, grouting is conducted both from the ground surface and from inside the shaft to seal the water inflowing passages and to consolidate the loose sand that has inflowed into the shaft, thus the incident of shaft flooding is coped with successfully.