div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imagea href=https:reader030fdocumentsnetreader030viewer20220220185b876e867f8b9a2d238ca17bhtml5page1jpg target=_blank img data-url=document-december-94-introduction-page-2-tunnel-excavation-by-a-tunnel-boring-machinehtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: scda9b588dd0ee343jimcontentcom · December 94 Introduction page 2 Tunnel excavation by a tunnel boring machine TBM is a common method becoming more and more competitive to the loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader030fdocumentsnetreader030viewer20220220185b876e867f8b9a2d238ca17bhtml5thumbnails1jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imagea href=https:reader030fdocumentsnetreader030viewer20220220185b876e867f8b9a2d238ca17bhtml5page2jpg target=_blank img data-url=document-december-94-introduction-page-2-tunnel-excavation-by-a-tunnel-boring-machinehtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: scda9b588dd0ee343jimcontentcom · December 94 Introduction page 2 Tunnel excavation by a tunnel boring machine TBM is a common method becoming more and more competitive to the loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader030fdocumentsnetreader030viewer20220220185b876e867f8b9a2d238ca17bhtml5thumbnails2jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imagea href=https:reader030fdocumentsnetreader030viewer20220220185b876e867f8b9a2d238ca17bhtml5page3jpg target=_blank img data-url=document-december-94-introduction-page-2-tunnel-excavation-by-a-tunnel-boring-machinehtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: scda9b588dd0ee343jimcontentcom · December...