针对富水铁路隧道内道床翻浆冒泥病害，以现行铁路隧道通用图为基础，结合富水隧道地下水水量大且具承压性的特点，对通用图中洞内防排水设施功能分析后提出改进方向，形成以降水压、消隐患、排渗水的富水隧道洞内防排水设计方案总体思路；并提出了富水隧道洞内增设降水井，调整双线隧道侧沟位置并加深，优化中心水沟井壁设计，道床板下增设渗水盲管等具体防排水改进措施。针对隧底存在虚碴层问题，提出采用水平光面爆破开挖，增加人工清底工序，按隐蔽工程验收及无损探测检查等具体施工质量控制措施。该设计施工预防措施经工程验证是有效、可行的。

Roadbed mud flow always occurs in railway tunnels in waterrich area. The functions of the drainage facilities in railway tunnels specified in standard railway tunnel drawings are analyzed. The drainage facilities in railway tunnels in waterrich area are optimized. The design concept of reducing the water pressure, eliminating the mud flow risks and releasing the seepage water is developed so as to avoid roadbed mud flow in tunnels in waterrich area. Countermeasures, such as adding dewatering wells, adjusting the positions of the side ditches of doubletrack railway tunnels and deepening the side ditches, optimizing the design of the walls of center ditches and adding filter pipe under the roadbed, are proposed. Construction countermeasures, such as horizontal smooth blasting, muck clearing by hand, floor accepting according to standards for concealed works and nondestructive detection are proposed to avoid loose mucks on the tunnel floor. It proves that the countermeasures proposed in the paper are effective and feasible.