某隧道大型溶腔泄水处理措施

某隧道为宜万铁路重点控制工程之一，具有多种不良地质的特长铁路隧道，施工中发生了特大溃水自然灾害，造成严重事故。通过对隧道溃水产生原因及溶腔勘探情况分析研究，采取了一系列行之有效的处理措施，在平导左侧增设泄水洞，快速而有效地完成了泄水施工，达到了泄水减压的目的。介绍了隧道溶腔勘探情况和泄水施工处理措施。

Treatment Measures for Large-scale Dissolving Cavity Sluicing in a Tunnel

In this paper, an extra long railway tunnel with various bad geological conditions is the focus, which is also one of key controlling projects of Yichang to Wanzhon Railway. During its construction, the natural calamity of water bursting caused a serious accident. After studying the cause of water bursting and analyzing the dissolving cavity, a series of effective treatment measures were adopted to ensure the safety of construction and operation. Sluicing holes were added on the left side of the parallel heading, which quickly and effectively finished the project of sluicing, achieving the purpose of sluicing and reducing pressure. This article introduces the exploration of the tunnel dissolving cavity and the treatment measures of sluicing.