【正文】 中國路橋集團西安實業(yè)發(fā)展有限公司畢都高速平?jīng)_埡口 隧道施工安全專項方案 1 / 62 BDT1 合同段 平?jīng)_埡口隧道專項安全 施工方案 審 批： 徐建新 2020 年 6 月 10 日 審核： 崔志飛 2020 年 5 月 25 日 編制： 曹偉鵬 2020 年 5 月 5 日 中國路橋集團西安實業(yè)發(fā)展有限公司畢都高速平?jīng)_埡口 隧道施工安全專項方案 2 / 62 目 錄 一、編制依據(jù) .........................................................................................................................................4 二、編制原則 .........................................................................................................................................4 三、工程概況 .........................................................................................................................................5 ..............................................................................................................................................5 地形地貌 ...........................................................................................................................................5 水文條件 ...........................................................................................................................................5 涌水量預測 ......................................................................................................錯誤 !未定義書簽。 ......................................................................................................................................5 ......................................................................................................................................6 ..............................................................................................................................................6 ..............................................................................................................................................6 .........................................................................................................................7 ......................................................................................................................................7 四、危險源識別及降級處置措施 .......................................................................................................7 ..........................................................................................................................................7 .........................................................................................................................8 巖溶降級處置措施 ..........................................................................................................................8 高地應力處置措施 ..........................................................................................................................8 突涌水段處置措施 ..........................................................................................................................9 爆破作業(yè)高風險降級處置措施 .....................................................................................................9 一般風險降級處理處置措施 .........................................................................................................9 五、施 工方案 .........................................................................................................................................9 ......................................................................................................................................9 .............................................................................................................................. 10 施工工藝流程圖 ........................................................................................................................... 10 施工方法 ........................................................................................................................................ 12 超前管棚 ........................................................................................................................................ 12 ....................................................................................................................................... 13 開挖 ........................................................................................................................................... 15 Ⅴ級圍巖段 ................................................................................................................................... 15 IV級圍巖段 .................................................................................................................................. 17 Ⅲ級圍巖段 ................................................................................................................................... 18 鉆爆設(shè)計 ....................................................................................................................................... 19 鉆爆作業(yè)技術(shù)要求 ...................................................................................................................... 27 ........................................................................................................................................... 30 濕噴砼施工 ................................................................................................................................... 30 錨桿、掛網(wǎng)施工 .......................................................................................................................... 30 中國路橋集團西安實業(yè)發(fā)展有限公司畢都高速平?jīng)_埡口 隧道施工安全專項方案 3 / 62 構(gòu)件支撐 ....................................................................................................................................... 31 ........................................................................................................................................... 32 工藝流程 ...........................................