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《软岩单线铁路隧道锚喷永久衬砌及洞口段修建新技术》鉴定会于1989年11月7～9日在合肥召开。路内外22个单位约50名代表参加了会议。按照部科技局和基建总局的科研专题计划,由铁四局主持,铁四院、铁科院铁建所及西南所、专业设计院等参加。从1979年开始,先后在下坑隧道,枫林1号、2号隧道等,进行了在软岩单线铁路隧道中,用锚喷作永久衬砌及洞口段修建新技术的试验。10年来圆满地完
“Soft rock single-line railway tunnel anchor longwall lining and construction of new technologies” appraisal will be held in November 1989, 7 to 9 in Hefei. Around 50 representatives from 22 units inside and outside the road attended the meeting. In accordance with the Ministry of Science and Technology and Infrastructure Bureau of the scientific research project, hosted by the iron four innings, the Iron Fourth Hospital, Iron and Steel Institute Iron and Steel Institute and the Southwest Institute, professional design institutes to participate. Beginning in 1979, successively in Xiakeng Tunnel, Fenglin No.1 and No.2 tunnels, tests were carried out to construct a new technology by using anchor spray as a permanent lining and a hole in the soft rock single-track railway tunnel. Over 10 years successfully completed