目 次1 总则12 术语23 基本资料34 计算边界条件54.1 计算断面· 54.2 计算流量· 54.3 起算水位· 65 计算方法与糙率·75.1 计算方法· 75.2 糙率 96 回水水面线确定 116.1 计算方案 116.2 回水水面线计算 126.3 成果合理性分析 126.4 外包线 137 设计成果 14附录A 水库回水计算断面位置示意图 15附录B 水库干流回水水面线计算成果表 16附录C 水库支流回水水面线计算成果表 18附录D 水库干流回水水面线示意图· 20附录E 水库支流回水水面线示意图 21本规范用词说明 22附:条文说明· 23Contents1 General provisions12 Terms·23 Basic data 34 Boundary conditions for calculation·54.1 Gross sections·54.2 Discharge 54.3 Initial water level65 Calculation method and roughness·75.1 Calculation method75.2 Roughness 96 Determination of backwater curve 116.1 Calculation schemes ·116.2 Calculation of backwater curve126.3 Rationality analysis of results 126.4 Envelope curve 137 Design results 14Appendix A The location schematic diagram of cross sections forcalculation of reservoir backwater15Appendix B The calculation results tables of reservoirbackwater curve for trunk river16Appendix C The calculation results tables of reservoirbackwater curve for tributary 18Appendix D The schematic diagram of reservoir backwatercurve for trunk river 20Appendix E The schematic diagram of reservoir backwatercurve for tributary21Explanation of wording in this code22Addition:Explanation of provisions23