在结合延吉 -图们高速公路小盘岭隧道工程进行公路隧道防渗漏防冻胀试验研究中 ,笔者对以半管为基础的隧道结构自排水技术及半管的应用、安装进行了试验与探索。1　半管排水新方法所谓半管 ,即断面呈“Ω”状的弹簧排水管 ,弹簧断面弦侧开口 ,弧侧粘有塑料膜。要求其强度能承受 In combination with the Yanji - Tumen Expressway Xiaopanling tunnel project for road tunnel seepage frost heaving test, the author of the semi-pipe-based tunnel self-drainage technology and half-pipe application and installation of the test and exploration . A new method of semi-pipe drainage The so-called half-pipe, that is, the section was “Ω” -shaped spring drain pipe, the spring section chord side opening, the arc side of a plastic film. Requires its strength can withstand