【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 鋼支撐安裝要點(diǎn) ........................................................................................................................20 鋼支撐拆除方案 ........................................................................................................................2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 .............................................................................................222 / 8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(kāi)挖及支撐 ......................................................................................................................................2基坑土方開(kāi)挖概況 ...........................................................................................................................2土方開(kāi)挖原則 ..................................................................................................................................25 基坑開(kāi)挖方法 .....................................................................................................................................25 開(kāi)挖準(zhǔn)備 ....................................................................................................................................25 開(kāi)挖及鋼支撐架設(shè)工序 ............................................................................................................26 土方開(kāi)挖工序 ............................................................................................................................27 基坑開(kāi)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(cè)及應(yīng)急措施 ......................................................................................................................2基坑開(kāi)挖技術(shù)措施 ..........................................................................................................................29施工降排水 ..............................................................................................................................................29 地下水控制措施 .................................................................................................................................2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(cè) ................................................................................................................................................31 監(jiān)測(cè)組織機(jī)構(gòu)與工藝流程 .................................................................................................................31 監(jiān)測(cè)目的 ..............................................................................................................................................32 監(jiān)測(cè)點(diǎn)的布設(shè) ......................................................................................................................................33 監(jiān)測(cè)項(xiàng)目及方法 ..................................................................................................................................33 基坑周圍地表水平位移與沉降監(jiān)測(cè) ........................................................................................33 基坑周邊 35m 范圍內(nèi)房屋監(jiān)測(cè) ...............................................................................................33 基坑開(kāi)挖引起的地下管線變形監(jiān)測(cè) ........................................................................................34 圍護(hù)體定向位移監(jiān)測(cè)（測(cè)斜） ................................................................................................34 鋼支撐軸力監(jiān)測(cè) .......................................................................................................................34 鉆孔樁鋼筋應(yīng)力監(jiān)測(cè) ...............................................................................................................34 地下水位變化監(jiān)測(cè) ....................................................................................................................34 監(jiān)測(cè)頻率 .............................................................................................................................................34 監(jiān)測(cè)預(yù)警 .............................................................................................................................................35 監(jiān)測(cè)數(shù)據(jù)管理 ......................................................................................................................................35 監(jiān)測(cè)信息反饋 ........................................