【正文】 ...................................................................................17 施工工藝 ......................................................................................................................................1鋼支撐施工 ......................................................................................................................................19 鋼支撐體系 ................................................................................................................................19 工藝流程 ...................................................................................................................................19 安裝方法 ....................................................................................................................................20 鋼支撐拆除方案 ........................................................................................................................20 鋼支撐安裝要點 ........................................................................................................................冠梁及混凝土支撐施工 ...................................................................................................................2冠梁及混凝土支撐工藝流程 ...................................................................................................2冠梁及混凝土支撐施工工藝 ...................................................................................................22 掛網(wǎng)噴砼邊坡支護(hù) ..............................................................................................................................2坡面掛網(wǎng)錨噴砼支護(hù)施工工藝 .............................................................................................2錨桿支護(hù)施工技術(shù)參數(shù) .........................................................................................................2坡面土釘支護(hù)施工 .................................................................................................................23基坑開挖及支撐 ......................................................................................................................................2基坑土方開挖概況 ...........................................................................................................................2土方開挖原則 ..................................................................................................................................25 基坑開挖方法 .....................................................................................................................................25 開挖準(zhǔn)備 ....................................................................................................................................25 開挖及鋼支撐架設(shè)工序 ............................................................................................................26 土方開挖工序 ............................................................................................................................27 基坑開挖質(zhì)量標(biāo)準(zhǔn) ....................................................................................................................2保證支撐結(jié)構(gòu)穩(wěn)定措施 ..................................................................................................................2施工監(jiān)測及應(yīng)急措施 ......................................................................................................................2基坑開挖技術(shù)措施 ..........................................................................................................................29施工降排水 ..............................................................................................................................................29 地下水控制措施 .................................................................................................................................29 觀測井回灌井成孔工藝流程 ....................................................................................................305 / 8排水控制措施 ...................................................................................................................................防止沉降等不良影響的施工措施 ...................................................................................................31 施工監(jiān)測 ................................................................................................................................................31 監(jiān)測組織機(jī)構(gòu)與工藝流程 .................................................................................................................31 監(jiān)測目的 ..............................................................................................................................................32 監(jiān)測點的布設(shè) ......................................................................................................................................33 監(jiān)測項目及方法 ..................................................................................................................................33 基坑周圍地表水平位移與沉降監(jiān)測 ........................................................................................33 基坑周邊 35m 范圍內(nèi)房屋監(jiān)測 ...............................................................................................33 基坑開挖引起的地下管線變形監(jiān)測 ........................................................................................34 圍護(hù)體定向位移監(jiān)測（測斜） ................................................................................................34 鋼支撐軸力監(jiān)測 .......................................................................................................................34 鉆孔樁鋼筋應(yīng)力監(jiān)測 ...............................................................................................................34 地下水位變化監(jiān)測 ....................................................................................................................34 監(jiān)測頻率 .............................................................................................................................................34 監(jiān)測預(yù)警 .............................................................................................................................................35 監(jiān)測數(shù)據(jù)管理