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铁道部第十六工程局五处在大秦线西坪隧道处理松散坍塌体施工中,首次采用日本“眼镜法”施工技术获得成功,于1986年5月25日顺利通过了30m长的通天塌方地段。
In the construction of loose collapses at the Xiping Tunnel on the Daqin Line, the construction of the 16th Engineering Bureau of the Ministry of Railways succeeded in adopting the Japanese “Optical Law” for the first time and successfully passed the 30-m-long section of avalanche space on May 25, 1986.