2022-12-29發(fā)布2023-07-01實施北京市規(guī)劃和自然資源委員會城鎮(zhèn)排水防澇系統(tǒng)數(shù)學模型構建與應用技術規(guī)程mathematicalmodelDB11/T2074—20222022北京釋。（地址：北京市西城區(qū)南禮士路60號；郵政編碼：100045；電子郵 2 4 5 5 5 6 9 2 44Modeldevelopmentandte 5 5 5 6 95Parametercalibrationandmodel 5.2Calibrationandvalidat 7Formulationofmodelresults AppendixAParametersofsourcecontrolfacilitiesmodel AppendixBDesignrainfallandschedulesi Explanationofwordinginthisspecification Listofquotedstandards Addition：Explanationofprovisions 1.0.1為提升北京市城鎮(zhèn)排水防澇系統(tǒng)規(guī)劃、設計和管理水平及成1.0.3城鎮(zhèn)排水防澇系統(tǒng)數(shù)學模型除應符合本規(guī)程外，尚應符合國2.0.1城鎮(zhèn)排水防澇系統(tǒng)數(shù)學模型mathematicalmodelofurban2.0.6地表漫流模型overlan基于城鎮(zhèn)排水防澇系統(tǒng)主要要素特征進行概化模擬2.0.10雨量徑流系數(shù)volumetricruno2.0.11流量徑流系數(shù)dischargerun22.0.13參數(shù)率定paramet3.0.1在城鎮(zhèn)排水防澇系統(tǒng)規(guī)劃、設計工作中應構建數(shù)學模型，分3.0.3模型的構建和應用應明確設計工況、模型方法、參數(shù)選取和454.2.1模型基礎數(shù)據(jù)資料宜包括降雨資料、地面高程資料、下墊面4.2.2模型應收集的降雨資料通常包括長序列歷史降雨資料、場次3設計降雨常用于分析一定重現(xiàn)期標準下的城鎮(zhèn)排水防澇系統(tǒng)64.2.5城鎮(zhèn)河道（蓄澇區(qū)）資料宜包括：流域范圍、河道斷面高程4.2.6流量和水位監(jiān)測資料應符合現(xiàn)行國家標準《城市排水防澇設4.3.1模型數(shù)據(jù)整理與導入過程應包括數(shù)據(jù)導入模型軟件、評估缺4.3.2模型中的設計降雨應根據(jù)城市氣象規(guī)律、匯水區(qū)域特征以及7法8將匯水區(qū)域劃分成為有限個等流時塊，每1管渠內的水流運動模擬應采用基于一維圣維南方程組的數(shù)值表4.3.5-2不同表面特征的河道粗糙系數(shù)（曼94.3.6地表漫溢模型和地表漫流模4.4.1在模型應用前，應對模型中排水防澇系統(tǒng)構成要素空間分布4.4.2在模型應用前，應對模型運行的穩(wěn)定性進行測試和修正，修5.1.2參數(shù)率定與模型驗證前，應根據(jù)模型方法確定率定參數(shù)，并1評估實測數(shù)據(jù)可用性,確保用于參數(shù)率定和模型驗證的數(shù)據(jù)滿5.2.4詳細模型開展參數(shù)率定與模型驗證時，除了滿足本規(guī)程第6.0.1框架模型模擬對象應包括地形，模擬計算應考慮排水防澇系6.0.2概化模型模擬對象應包括地形、河道、蓄澇區(qū)、雨水管渠干6.0.3詳細模型模擬對象應包括地形、河道、蓄澇區(qū)、雨水管渠、6.0.4傳統(tǒng)雨水管渠規(guī)劃、設計方案宜采用數(shù)學模型法進行校核；7.2.1專題報告應包含項目概況、資料收集、模型構建與測試、參7.2.2模型附件應包括模型說明文件和模型工程文件，可附加模型7.2.3模型說明文件內容應包括基礎數(shù)據(jù)說明、模型參數(shù)取值、模7.2.4模型工程文件應包括模型空7.2.6模型監(jiān)測數(shù)據(jù)記錄宜包括測點分布圖、測點現(xiàn)場情況記錄及7.2.7模型過程數(shù)據(jù)宜包括參數(shù)率定與模型驗證、工況分析等各階A.0.2依據(jù)源頭減排設施類型，其模型宜包括：生物滯留池、雨水A.0.3源頭減排設施模型各單體模塊可由表面層、蓄水層、路面透表A.0.3源頭減排設施模型各單體模塊結構組成表vvv*vvvvvvv*vvv**vvA.0.4源頭減排設施模型各結構層主要參數(shù)詳見表A.0.4-1，表A.0.4-1源頭減排設施模型各結構層主要參數(shù)表表A.0.4-2綠色屋頂部分參數(shù)取值參考表A.0.4-3生物滯留設施部分參數(shù)取值參考表A.0.4-4植草溝部分參數(shù)取值參考表A.0.4-6透水鋪裝部分參數(shù)取值參考表A.0.4-7不同土壤類型參數(shù)取值參考B.0.1北京市設計降雨計算方法應符合北京市現(xiàn)行地方序號123456789序號序號123456789序號B.0.3短歷時設計降雨各歷時雨量計算應根據(jù)現(xiàn)行北京市123456789123456789序號H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H510.3320.2330.3940.3650.4460.4970.3680.1690.230.420.290.160.260.360.210.31序號H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H50.931.691.43201.32211.61221.95231.01240.86250.73260.93270.93281.43292.81303.42315.78325.17334.79341.21351.81361.89372.13382.58391.98402.89414.18425.784310.26445.93457.22464.79475.93486.23494.33508.06517.64529.03539.4454559.31566.67576.25序號H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H5587.36598.33609.72618.196213.646317.886416.066522.126616.676713.636813.936914.847019.247115.647221.787312.97410.997519.457625.737719.087820.237913.92808.588112.468247.43838452.578538.548637.728723.748841.858926.699031.469138.59236.639324.879414.619521.249619.639715.75983.72序號H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H5992.742.431.711.621.141.662.521.811.283.281.991.571.521.471.051.5711.282.522.282.763.423.84.9420.620.430.480.480.710.670.710.380.380.520.380.430.34序號H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H50.290.240.480.670.330.380.430.380.330.380.330.430.570.370.240.320.420.370.560.6112.047.797.135.041.953.991.522.00.570.360.420.420.440.39序號H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H50.330.180.310.340.360.550.262000.262010.182020.262031.482040.882050.472060.342070.62081.792090.62100.292110.392120.212130.292140.862150.962160.472170.342180.362190.492200.62210.39序號H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H52220.472230.362240.72252.492265.482273.272282291.222300.72311.122321.532331.432341.222350.752360.472370.342380.262390.232400.422410.652420.492430.442440.522450.472460.312470.442480.442490.342500.312510.362520.422530.392540.392550.552560.72570.752580.782590.522600.62610.862620.7序號H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H52631.432640.862650.732660.522670.832680.672690.912700.732711.122720.992730.522740.672751.122761.172770.992782.992791.822800.522810.162820.622831.132841.052851.162860.412870.382880.18序號H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H510.0020.0030.0040.0050.0060.0070.0080.0090.000.000.00序號H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H50.000.000.000.000.000.000.020.02200.02210.00220.01230.01240.01250.00260.00270.00280.08290.03300.01310.00320.19330.04340.03350.08360.02370.12380.28390.27400.27410.28420.03430.15440.40450.54460.36471.06481.46491.80501.84513.32528.16序號H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H5535.57545.08553.66563.89572.58582.20592.11602.41613.69623.86634.35644.20653.32662.62672.32681.28691.44700.79710.59720.40730.47740.92751.34760.50770.52780.45790.39800.47810.46820.41830.41840.47850.52860.52870.51880.73890.73900.73910.40920.39930.34序號H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H5940.34950.25960.25970.25980.25990.300.070.070.090.370.380.370.300.240.510.490.280.220.270.250.080.500.360.310.310.28序號H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H50.290.280.300.030.030.040.030.030.030.041.592.460.761.850.650.390.580.951.112.354.183.622.710.960.530.460.830.751.261.601.660.910.830.910.85序號H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H51.061.041.651.231.623.404.201.040.960.881.480.560.632.953.793.133.735.944.664.183.592004.9420129.2920239.6920346.6720420553.3320634.5520725.7620849.8820920.8221041.0221130.7921228.1921317.5221415.0621519.1221626.12序號H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H521710.9321811.2521916.0222014.8622116.8022213.8822319.7422418.7122525.2322615.7322712.4622816.7622913.6323016.1923120.9023218.2123313.2423412.8823515.1423619.6423713.1923816.1923917.9224011.332417.712427.592435.302445.372453.182464.002473.642484.582494.912504.192515.222525.122533.842544.522554.542564.052573.24序號H1440-H720H720-H360H360-H240H240-H180H180-H150H150-H120H120-H90H90-H60H60-H45H45-H30H30-H15H15-H5H52583.262594.262604.702614.862623.852632.532641.632651.542661.682671.432681.232692.092701.822711.402721.392731.902741.092751.782763.182771.672782.112791.642800.832811.042821.082831.302841.412851.772861.552871.032880.79B.0.5長歷時設計降雨各歷時雨量大小應根據(jù)現(xiàn)行《北京市水文手本規(guī)程用詞說明引用標準名錄2022北京城鎮(zhèn)排水防澇系統(tǒng)數(shù)學模型構建與應用技術規(guī)程DB11/T2074—2022條文說明 3.0.1本條規(guī)定了城鎮(zhèn)排水防澇系統(tǒng)數(shù)√√√料影；激光雷達測量；豎向√√√√√√料置；雨水口位置及規(guī)檢查井標高和尺寸；管√√√√現(xiàn)場監(jiān)測和歷史記錄；防掘√√料制設施（閘、閥、堰√√件√√√形態(tài)（如河道的橫、縱斷面以便計算水流運動過程中的各個水力要素；分區(qū)（3）涵洞、閘壩、排澇泵站及跨河建（構）筑物資料主要包括：構筑物結題或可疑數(shù)據(jù)，提出解決措施，包括通過人工測量、CCTV（ClosedCircuit程，或根據(jù)數(shù)字高程模型推斷；對于積水點處的檢查井和（4）管渠高程缺失，可綜合考慮管渠坡度、埋深、上下游管渠高程等進行4.3.2根據(jù)水文計算原理，設計降雨總歷時不應小時可參考北京市現(xiàn)行地方標準《城鎮(zhèn)雨水系統(tǒng)規(guī)劃設計暴雨徑流計算標準》111地下室覆土綠地(≥500mm）地下室覆土綠地500mm） 期期(≤5(>5年且(>10年且(>20年且(>30年且期(>數(shù)數(shù)-2+inn（1）12345A=Σi（2）12345640~75789地不透水面積比典型取值為50%~80%，風景名勝設施用地不透水面積比典型取值為面匯流的過程，因此降雨徑流相關圖法常用于較大流域（通常為城abn11111一k0tx一k0txf0——初始下滲率（mm/hABCD是指砂質黏壤土；D類土壤是指黏壤土、粉質黏壤土、砂質黏土、粉降雨量（mm）6050403020降雨量（mm）60504030200（平割法）損失量 12345678910111213141516171時段（h）要是指水文響應單元或匯水區(qū)域內的匯流計算，即對L——地面流行距離（mN值等流時塊的劃分通常需根據(jù)匯水區(qū)域的形狀和影響地表匯流路徑的地形地 Q1=(P1/10)×q1;Q2=(P1/10)×q2+(P2/10)Q3=(P1/10)×q3+(P2/10)×q2+(P3/10)×q14.3.5管渠內水流運動過程通常可采用完全或簡化求解的一維圣維南方程組進水動力學模型涉及的主要參數(shù)包括管渠/河道粗糙系數(shù)和節(jié)點局部水頭損失堰和斷面突變處等其局部水頭損失系數(shù)應根據(jù)實測數(shù)據(jù)分析確定，不4.3.6地表漫溢模型和地表漫流模型一般需先構建規(guī)則網(wǎng)格的地形數(shù)字高程模的地表積水深度以及范圍（平靜水面方法但該方法一般無法準確體現(xiàn)地表積地貌特征，如建筑物分布、小區(qū)圍墻、道路以及量（管網(wǎng)耦合節(jié)點與地表二維網(wǎng)格的最大交換流量限值避免由于節(jié)點通量設別低強度多峰值的降雨事件重點考查模型在長期降雨過程中是否能穩(wěn)定運行低重現(xiàn)期降雨事件和高重現(xiàn)期降雨事件主要是用于評估模型的連續(xù)性相對2）檢查節(jié)點縱斷面圖，觀察是否是由于井底標高過低1）檢查管渠縱斷面圖，觀察是否存在管渠逆坡或錯位導致永久蓄水（1）管渠水動力學模型：歷史場次降雨過程的雨量監(jiān)測數(shù)據(jù)以及降雨發(fā)生（2）地表漫溢模型和地表漫流模型：如果模型模擬區(qū)域為相對閉合的匯水（3）對于包含下凹橋和低洼區(qū)域的模型，需要下凹橋和低洼區(qū)域的積水深（4）對于包含天然或人工河道的模型，需要降雨發(fā)生前和整個降雨事件過5.2.1參數(shù)率定與模型驗證應至擬區(qū)域的空間代表性，并應對前期降雨和土壤濕模型方法與傳統(tǒng)的水力計算方法相比，其計算結果與管網(wǎng)實際運行狀態(tài)更吻合。管網(wǎng)人為做出的流域劃分假定而引起的潛在設計風險，地形條件，核算各子匯水區(qū)流量徑流系數(shù)為0.55~0.75，地面集水時間為00000000管渠水動力學模型采用動力波方法模擬，模擬計算步長為1min，總有時部分下游管渠校核標準較高是由于上游管渠能力不足，限制了下泄的流量，的試算，再逐漸減少管渠規(guī)模，直至管渠能力適宜再按照“從下游至上游”的高程，從而優(yōu)化調整設計流量的分配；通過減小下游超標管渠的尺寸或坡度，從而降低管渠富余的排水能力，最終實現(xiàn)全部管渠滿足設計標準要求，如圖112）明確建模的預期目標以及選用的模型類型，例如“本次模型構建以識別3）明確選用的模型軟件名稱及版本號，自主研發(fā)模型需要詳細介紹模型產4）對區(qū)域氣象水文、人口概況、地形地貌、排水單元劃分、排水防澇系統(tǒng)5）繪制項目實施技術路線圖，技術路線圖能夠清晰反映模型模擬的關鍵環(huán)1）模型構建說明部分應對產流模型、匯流模型、管渠（河道）水動2）模型邊界條件及初始參數(shù)設置內容應重點闡述模型邊界條件設置，并列3）模型測試應包括模型中排水防澇系統(tǒng)構成要素空間分布和連接情況核實（5）模擬工況章節(jié)應以表格形式給出所有模擬工況，并對每種工況構建的（6）模擬結果分析章節(jié)應對每種工況的模擬結果進行分析，必要時需進行（7）應用結論章節(jié)應針對不同模型工況的模擬結果給出明確的應用結論。A.0.1源頭減排設施通常以低影響開發(fā)設施（LID）為主，主要通過綠色屋頂、要參數(shù)包