申嘉湖高速公路湖州鹿山至安吉孝源段第 3 合同段长安隧道洞身开挖、支护方案中交第三航务工程局有限公司项目经理部二 0 一六年五月目 录一、开挖 ················································31、台阶法开挖 ·····················································32、注意事项 ·······················································43、全断面开挖 ·····················································94、仰拱开挖 ························································125、中心水沟 ·······················································166、超欠挖处理 ·····················································20二、超前支护 ············································201、超前小导管 ······················································202、φ25超前全长粘结型锚杆 ········································22三、初期支护 ············································221、钢架 ···························································222、钢筋网 ·························································233、钢筋网铺设 ······················································264、锚杆施工 ·······················································265、喷射混凝土施工 ························...
