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1980年10月至1982年10月,在成渝铁路电气化改造中新建的金家岩双线隧道进行了软弱围岩新奥法施工科研试验。试验内容有光面爆破、喷锚支护、复合式衬砌、结构防水、地质调查与声波测试等5个项目。目前除复合式衬砌受力状态还需继续观测外,其余试验工作已全部结束。为了检阅科研试验成果,由成都铁路局工程处、铁科院西南所和铁二院科研所共同主持,于4月中旬在成都举行了金家岩隧道科研试验技术总结会。
From October 1980 to October 1982, the new Austrian Arc Method construction of soft surrounding rock was conducted in the Jinjiyan double-track tunnel newly built in the electrification of Cheng-Yu Railway. The test contents include smooth blasting, shotcrete and anchor support, composite lining, waterproof structure, geological survey and sound wave test. At present, in addition to the composite lining also need to continue to observe the state of stress, the rest of the test work has been completed. In order to review the results of scientific research and experiments, Chengdu Railway Bureau Agency, Southwest Branch of Iron ASTRI and the Second Institute of Iron and Steel Research Institute co-chaired by the Central Plains in mid-April held a Jin Jiyan tunnel technology research and experiment summary.