109号隧道抢修加固结构安全性监测技术

5．12汶川大地震，导致宝成铁路109号隧道山体坍塌，列车与塌体相撞，油罐车在洞内着火，坍塌堵塞嘉陵江。经全力抢险，5月24日恢复货车在慢速下通行。但由于隧道结构严重破损，山体开裂严重、落石掉快不断，无法保证行车安全。抢险指挥部组织对隧道结构、临近山体、线路进行了抢险加固，开展了加固结构的受力与变形系统监测，进行了隧道稳定性评价，为客运列车开通提供了科学数据。

Monitoring Technique of Rush Emergency and Reinforcement Structural Safety for 109 Tunnel

As a result of 5.12 earthquake, the mountain collapsed at 109 Tunnel on Baoji-Chengdu Railway line, and there was a collision between train and collapsed body. Jialing River was blocked by the collapse bodies and oil tank train caught fire in the tunnel. Freight train resumed running at slow rate on May 24th through rush repair. Owing to heavy damage of the tunnel structure, serious mountain cracking and continuous landfall and rockfall, driving safety could not be ensured. The Headquarters of rush emergency organized to reinforce the tunnel structure and mountain along the line, systematically monitored the stress and deformation of the reinforced structure, valuated the tunnel stability, and provided scientific data for passenger train passing.