如果您无法下载资料，请参考说明：
1、部分资料下载需要金币，请确保您的账户上有足够的金币
2、已购买过的文档，再次下载不重复扣费
3、资料包下载后请先用软件解压，在使用对应软件打开
I类围岩开挖及支护步骤图522346819101112131471516171819202122700400511511400600342中导坑：eq\o\ac(○,1)超前导管注浆加固eq\o\ac(○,2)中导坑开挖eq\o\ac(○,3)中导坑锚喷eq\o\ac(○,4)中墙砼衬砌。左洞：eq\o\ac(○,5)超前小导管注浆加固eq\o\ac(○,6)侧壁导坑开挖eq\o\ac(○,7)侧壁导坑锚喷eq\o\ac(○,8)边墙砼衬砌eq\o\ac(○,9)上弧形导坑开挖eq\o\ac(○,10)上弧形导坑锚喷eq\o\ac(○,11)上弧形导坑二次衬砌eq\o\ac(○,12)核心土开挖eq\o\ac(○,13)仰拱及填充。右洞：eq\o\ac(○,14)超前小导管注浆加固eq\o\ac(○,15)侧壁导坑开挖eq\o\ac(○,16)侧壁导坑锚喷eq\o\ac(○,17)边墙砼衬砌eq\o\ac(○,18)上弧形导坑开挖eq\o\ac(○,19)上弧形导坑锚喷eq\o\ac(○,20)上弧形导坑二次衬砌eq\o\ac(○,21)核心土开挖eq\o\ac(○,22)仰拱及填充。II类围岩开挖及支护步骤图11181410617161298131551731836001942220400497497400700中导坑：eq\o\ac(○,1)超前导管注浆加固eq\o\ac(○,2)中导坑开挖eq\o\ac(○,3)中导坑锚喷eq\o\ac(○,4)中墙砼衬砌。左洞：eq\o\ac(○,5)上部台阶开挖eq\o\ac(○,6)拱部初期支护eq\o\ac(○,7)侧墙部开挖eq\o\ac(○,8)墙部初期支护eq\o\ac(○,9)边墙砼衬砌eq\o\ac(○,10)拱部砼衬砌eq\o\ac(○,11)核心土开挖eq\o\ac(○,12)仰拱及填充。右洞：eq\o\ac(○,13)上部台阶开挖eq\o\ac(○,14)拱部初期支护eq\o\ac(○,15)侧墙部开挖eq\o\ac(○,16)墙部初期支护eq\o\ac(○,17)边墙砼衬砌eq\o\ac(○,18)拱部砼衬砌eq\o\ac(○,19)核心土开挖eq\o\ac(○,20)仰拱及填充。III类围岩开挖及支护步骤图7223415610141213171870088188160030289111516中导坑：eq\o\ac(○,1)超前锚杆加固eq\o\ac(○,2)中导坑开挖eq\o\ac(○,3)中导坑锚喷eq\o\ac(○,4)中墙砼衬砌。左洞：eq\o\ac(○,5)上台阶开挖eq\o\ac(○,6)拱部初期支护eq\o\ac(○,7)下台阶开挖eq\o\ac(○,8)墙部初期支护eq\o\ac(○,9)边墙砼衬砌eq\o\ac(○,10)拱部砼衬砌eq\o\ac(○,11)仰拱及填充。右洞：eq\o\ac(○,12)上台阶开挖eq\o\ac(○,13)拱部初期支护eq\o\ac(○,14)下台阶开挖eq\o\ac(○,15)墙部初期支护eq\o\ac(○,16)边墙砼衬砌eq\o\ac(○,17)拱部砼衬砌eq\o\ac(○,18)仰拱及填充。IV类围岩开挖及支护步骤图111051381267943022600311881881700中导坑：eq\o\ac(○,1)中导坑开挖eq\o\ac(○,2)中导坑锚喷eq\o\ac(○,3)中墙砼衬砌。左洞：eq\o\ac(○,4)全断面开挖eq\o\ac(○,5)全断面初期支护eq\o\ac(○,6)铺底eq\o\ac(○,7)边墙砼衬砌eq\o\ac(○,8)拱部砼衬砌。右洞：eq\o\ac(○,9)全断面开挖eq\o\ac(○,10)全断面初期支护eq\o\ac(○,11)铺底eq\o\ac(○,12)边墙砼衬砌eq\o\ac(○,13)拱
