【正文】 畢都高速公路畢節(jié)至都格段 第 T1 合同段 （ K79+000~K86+050） 隧道施工安全專項(xiàng) 技術(shù)方案 編 制 ： 技術(shù)負(fù)責(zé)人： 審 核： 中國(guó)路橋集團(tuán)西安實(shí)業(yè)發(fā)展有限公 司 畢都高速第 T1 合同段項(xiàng)目經(jīng)理部 二○一二年七月十二日 中國(guó)路橋集團(tuán)西安實(shí)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(xiàng)方案 2 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(yù)測(cè) .......................................................................................................................................5 ......................................................................................................................................6 ......................................................................................................................................6 ..............................................................................................................................................6 ..............................................................................................................................................6 .........................................................................................................................7 ......................................................................................................................................7 四、危險(xiǎn)源識(shí)別及降級(jí)處置措施 .......................................................................................................7 ..........................................................................................................................................7 .........................................................................................................................8 巖溶降級(jí)處置措施 ..........................................................................................................................8 高地應(yīng)力處置措施 ..........................................................................................................................8 突涌水段 處置措施 ..........................................................................................................................8 爆破作業(yè)高風(fēng)險(xiǎn)降級(jí)處置措施 .....................................................................................................9 一般風(fēng)險(xiǎn)降級(jí)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 ........................................................................................................................................... 15 Ⅴ級(jí)圍巖段 ................................................................................................................................... 15 IV級(jí)圍巖段 .................................................................................................................................. 17 Ⅲ級(jí)圍巖段 ................................................................................................................................... 18 鉆爆設(shè)計(jì) ....................................................................................................................................... 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(guó)路橋集團(tuán)西安實(shí)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(xiàng)方案 3 構(gòu)件支撐 ....................................................................................................................................... 31 ........................................................................................................................................... 32 工藝流程 ........................................................................................................................................ 32 仰拱施工 ..........