中文摘要：

针对隧道穿越断层破碎带溶洞时出现坍塌及初期支护变形事故，综合分析了坍塌及变形区的规模及现场揭露的地质情况，结合洞内施工条件及施工情况，对隧道坍塌及变形区进行工字钢临时支撑及封闭注浆后，提出“超前管棚＋小导管注浆”处理方案，并在处理段增设监测断面，通过监控量测判断围岩的稳定状况及坍塌变形处理效果．量测结果表明，坍塌变形段围岩处理后在一定时间内达到稳定，说明采用“超前管棚＋小导管注浆”方案处理断层破碎带岩溶隧道坍塌变形效果良好，对类似工程事故处理有一定的借鉴作用．

英文摘要：

To aim at analyzing collapse of a tunnel during construciton in faulted karst cave, unfavorable geological condition, continuous rainstorm and inaccurate geological survey were discussed and according to in-situ survey, the method of advanced pipe with ductile grouting was put up, and applied to collapse treatment. Furthermore, monitoring and measurement of groupting zone was conducted during tunnel construction. The in-situ monitoring data show that the method of advanced pipe with ductile grouting is effective for temporary support requirements in tunnel collapse treatment.