【正文】 ............................................................. 2 . Ⅱ、Ⅲ類圍巖開挖 ........................................................................... 2 . Ⅳ類圍巖開挖 ................................................................................... 3 . 鉆爆設計 .......................................................................................................... 3 . 炸藥品種和炮眼直徑、進尺選擇 .................................................... 3 . 單耗確定 ............................................................................................ 4 . 掏槽方式 ............................................................................................ 4 . 炮孔布置 ............................................................................................ 4 . 裝藥參數表 ........................................................................................ 6 . 炮孔堵塞方式 .................................................................................... 6 . 起爆方法和順序 ................................................................................ 6 . 裝藥爆破 ............................................................................................ 6 . 作業(yè)循環(huán)時間 .................................................................................... 7 . 出渣 .................................................................................................................. 7 . 洞內施工輔助作業(yè) .......................................................................................... 7 . 通風排煙 ............................................................................................ 7 . 降塵 .................................................................................................... 7 . 照明 .................................................................................................... 8 . 洞內施工排水 .................................................................................... 8 . 洞內供水 ............................................................................................ 8 . 安全處理 ............................................................................................ 8 . 支護施工 .......................................................................................................... 8 . 支護施工中遵循的原則 .................................................................... 8 . 鋼支撐施工 ........................................................................................ 8 . 系統(tǒng)錨桿施工 .................................................................................. 10 . 噴射砼施工方法 .............................................................................. 11 . 超前錨桿 .......................................................................................... 11 . 超前管棚支護施工 .......................................................................... 13 . 排水洞洞挖主要施工技術措施 .................................................................... 13 4. 隧洞施工監(jiān)控量測 ....................................................................................... 14 . 地表下沉量量測 ............................................................................................ 14 . 洞內凈空位移量測 ........................................................................................ 15 . 應力、應變量測 ............................................................................................ 15 . 錨桿內力量測 .................................................................................. 15 . 鋼支撐內力壓力量測 ...................................................................... 16 . 爆破振動量測 ................................................................................................ 16 5. 施工進度計劃 ................................................................................................ 16 6. 工程質量保證措施 ....................................................................................... 16 . 隧洞開挖質量控制點 .................................................................................... 16 . 主要控制措施 ................................................................................................ 16 7. 安全生產、文明施工及環(huán)保措施 ............................................................... 17 . 安全管理措施 ................................................................................................ 17 . 安全技術措施 ................................................................................................ 18 . 施工現場常規(guī)安全措施 .................................................................. 18 . 爆破施工安全保 證措施 .................................................................. 20 . 裝碴與運輸安全保證措施 .............................................................. 21 . 臨時支護安全保證措施 .................................................................. 21 . 噴錨支護施工安 全措施 .................................................................. 22 . 洞內通風與防塵安全保證措施 ...................................................... 23 . 供電及照明安全措施 ...................................................................... 23 . 安全防洪措施 ................................................................................................ 23 . 設計洪水標準 ............................................................................... 23 . 防洪度汛應急預案 ....................................................................... 24 . 防洪措施 ....................................................................................... 24