为解决重载运输条件下铁路隧道设计难题，通过大秦线铁路隧道病害的调查资料，对重载运输诱发的隧道病害及其原因进行总结分析。依托山西中南部铁路通道隧道设计经验，提出重载铁路：〖JP〗 1）软弱破碎围岩大于1000m或软岩高地应力段长大于500m的隧道、4km以上突水突泥风险等级较高的岩溶隧道优选采用2个单线隧道方案； 2）单线隧道仰拱矢跨比取1/6.5、双线取1/10.5，可以满足30t列车轴质量要求； 3)隧道内坡度不应小于3‰、富水地层不小于5‰，提出防排水措施实现运营可维护； 4)计算确定了轨下结构设计参数； 5)对隧道内轨道结构过渡、轨下及隧底结构过渡段采取了设计措施； 6)提出了隧道基底普查及承载要求。

The diseases and their causes of tunnel induced by heavyhaul transportation are analyzed, with the disease data of tunnel on DatongQinhuangdao railway as examples. Conclusions drawn are as follows: 1) Two singleline tunnels might be the best choice when karst tunnel with water and mud bursting section longer than 4 km and soft and weak surrounding rocks section longer than 1000 m or section with soft rocks and high ground stress longer than 500 m. 2) Singleline tunnel crown with risespan ratio of 1/6.5 and twinline tunnel with risespan ration of 1/10.5 can meet the running requirements. 3) The gradient in the tunnel should lower than 3‰, ground with rich water should less than 5‰. Water draining technologies are presented. 4) The design parameters of the structure under the track bed are decided. 5) Countermeasures of the connection sections are adopted. 6) The general investigation and load bearing requirements of the tunnel foundation are proposed.