1.0Robbinshttps://www.robbinstbm.com/zh-hans/Completing Mexico City’s Mixed Ground Mega Tunnel: Emisor Oriente - Robbinsrich600338<blockquote class="wp-embedded-content" data-secret="DsRXPDv949"><a href="https://www.robbinstbm.com/zh-hans/teo-nat2020/">Completing Mexico City’s Mixed Ground Mega Tunnel: Emisor Oriente</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.robbinstbm.com/zh-hans/teo-nat2020/embed/#?secret=DsRXPDv949" width="600" height="338" title="“Completing Mexico City’s Mixed Ground Mega Tunnel: Emisor Oriente” — Robbins" data-secret="DsRXPDv949" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
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https://www.robbinstbm.com/wp-content/uploads/2020/06/Image-1_hi-res-scaled.jpg25601707n May 23, 2019, the last of six 8.93 m diameter EPBs completed excavation at Mexico City’s Túnel Emisor Oriente (TEO), a feat marking the completion of ten years and 62.1 km of tunneling. The six EPB TBMs excavated some of the most complex geology on earth, ranging from abrasive volcanic rock to watery clays.