【正文】 .................................... 109 錨噴混凝土噴層厚度不足 ................................................................. 110 墻背回填不實(shí) ..................................................................................... 111 3 橋梁工程 ................................................................................................................ 112 明挖地基 ....................................................................................................... 112 基坑 ..................................................................................................... 112 放坡開挖塌方 ........................................................................... 112 基坑超挖、基底擾動(dòng) ............................................................... 114 基坑泡水 ................................................................................... 115 基坑底出現(xiàn)橡皮土 ................................................................... 116 基坑底出現(xiàn)冒水、流砂 ........................................................... 117 基坑底土體隆起 ....................................................................... 118 基坑底突涌 ............................................................................... 119 基坑底部地質(zhì)情況與設(shè)計(jì)不符 ............................................... 119 基坑支護(hù) ............................................................................................. 120 支撐安裝不及時(shí) ....................................................................... 120 支撐與圍檁面不垂直 ............................................................... 121 支撐直線度差 ........................................................................... 122 支撐間距過大、節(jié)點(diǎn)質(zhì)量不合格 ........................................... 123 支撐不水平 .............................................................................. 123 支護(hù) 結(jié)構(gòu)與圍檁不密貼 ........................................................... 124 支護(hù)結(jié)構(gòu)滲漏水 ....................................................................... 125 懸臂式排樁嵌固深度不足 ...................................................... 126 鋼支撐失穩(wěn) .............................................................................. 127 鋼管支撐彎曲破壞 ................................................................. 127 鋼板樁樁身轉(zhuǎn)動(dòng) ..................................................................... 128 鋼板樁發(fā)生 共連 ..................................................................... 129 基坑回填 ............................................................................................. 129 回填不及時(shí) ............................................................................... 129 回填沉陷 ................................................................................... 130 圍堰 ..................................................................................................... 132 鋼圍堰滲漏水 ........................................................................... 132 鋼板樁圍堰無(wú)法合龍 ............................................................... 133 鋼板樁圍堰滲漏水 ................................................................... 133 鋼板樁圍堰拔除困難 ............................................................... 135 沉井基礎(chǔ) ...................................................................................................... 136 砂墊層承載力不足 ............................................................................. 136 外壁粗糙、鼓脹 ................................................................................. 136 井壁裂縫 ............................................................................................. 138 沉井歪斜 ............................................................................................. 139 井點(diǎn)降水效果未能達(dá)到設(shè)計(jì)要求 ..................................................... 140 下沉困難 ............................................................................................. 142 下沉過快 ............................................................................................. 144 突沉 ..................................................................................................... 145 下沉過慢 ............................................................................................. 146 下沉擱置 .......................................................................................... 148 沉井懸掛 .......................................................................................... 149 傾斜度過大 ...................................................................................... 150 平面位移過大 .................................................................................. 152 下沉遇流砂 ...................................................................................... 154 下沉遇堅(jiān)硬土層 .............................................................................. 155 遇傾斜巖層 ...................................................................................... 156 外圍地面沉降過大 ........................................................................... 156 井壁滲漏水 ...................................................................................... 157 沉井超沉或欠沉 .............................................................................. 158 沉井失穩(wěn) .......................................................................................... 159 封底混凝土漏水 .............................................................................. 160 封底抽水后上浮 .............................................................................. 161 沉井上浮 .......................................................................................... 162 地下連續(xù)墻基礎(chǔ) ........................................................................................... 164 導(dǎo)墻施工 ............................................................................................. 164 導(dǎo)墻墻體不穩(wěn)定 ...................................................................... 164 導(dǎo)墻內(nèi)外側(cè)施工平臺(tái)不穩(wěn)定 .................................................. 165 導(dǎo)墻頂面標(biāo)高不夠或不等高 .................................................. 165 導(dǎo) 墻平面位置偏位 .......................