1 目 录 1 总则....................................................................................................................................................... 1 2 岩土明挖工程 ....................................................................................................................................... 2 2 .1 边坡开挖 .................................................................................................................................... 2 2 .2 岩基明挖 .................................................................................................................................... 3 2 .3 土基明挖 .................................................................................................................................... 5 3 地下洞室开挖工程 ............................................................................................................................... 7 3 .1 钻爆法开挖 ................................................................................................................................ 7 3 .2 掘进机开挖 ................................................................................................................................ 8 3 .3 破碎围岩及土洞开挖 ................................................................................................................ 9 4 锚喷支护工程 ..................................................................................................................................... 1 2 4 .1 锚杆支护 .................................................................................................................................. 1 2 4 .2 喷射混凝土 .............................................................................................................................. 1 2 4 .3 格栅拱架或钢拱架 ...................................................................................................................
