______________________________________________________________________编制依据及目的11
________________________________________________________________编制依据1_1
________________________________________________________________编制范围及目的12
______________________________________________________________________工程概况及施工特点12
________________________________________________________________基本情况1_2
________________________________________________________________工程地质情况12
________________________________________________________________水文情况2_2
________________________________________________________________与既有线相对位置及现场地形22
________________________________________________________________主要危险源辨识23
______________________________________________________________________施工准备23
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