1) return rock reinforcement
回头加固
2) backfilling strengthening
回填加固
1.
Combined with the practice of certain railway tunnel engineering,the author briefly describes some methods of backfilling strengthening to create boring construction conditions when the thickness of rock mass of shallow-depth Pangshan tunnel is less than once as much as tunnel diameter.
结合某铁路隧道工程实践,介绍浅埋旁山隧道岩壁厚度小于1倍洞径的情况下,采用回填加固设钢筋混凝土挡墙与岩体间回填混凝土,隧道上方土体注浆创造暗挖施工条件的一些做法,可为类似工程提供借鉴。
4) reinforced toe;block in toe;double toe
加固袜头
5) double
[英]['dʌbl] [美]['dʌbḷ]
头跟加固
6) toe block
袜头加固
补充资料：回头
①把头转向后方：一～就看见了ㄧ请你回过头来。②回来；返回：一去不～。③悔悟；改邪归正：贩子～ㄧ现在～还不算晚。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条