METHOD FOR BORING A TUNNEL IN SOFT GROUND OR ROCK WITH A BORING EQUIPMENT HAVING A BORING HEAD
作者： Van De Griendt Michiel Adriaan , Van Berkel Robert Hendrikus Co
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摘要: Abstract not available for EP1078147Abstract of corresponding document: WO9958818A tunnel is bored in soft ground or rock with the aid boring equipment a cutting head. In order to prevent collapse breaking away earth and subsidence at location high-risk sections tunnel, especially start end section which run just below traffic way, replaced, least over length be bored, by settable material that sets produce solid compact block. The said used bore through set block such way extends part cross
lens.org 参考文章(4)
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