漂浮物对城市道路雨水口致堵规律研究

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Abstract：Toinvestigatetheimpactofdiferentfloatingdebrisonthedrainageperformanceofurbanpipenetworksystemsystems，this studyconductedaseriesofphysical modeltestsbasedonslope experiments byconsidering thedrainageprocessofthe pipenetwork. Theeffectsofvaryingsurfaceslopes，storm-waterinletclogging，andtypicalfloatingdebriscloggingontheperformanceofthepipe network system were examined. The results show that： ① Under four clogging conditions on a flat slope，the drainage capacity of the storm-water inlet decreases by 21.45 % ～27.43 % ，37.59 % ～65.25 % ，10.69 % ～24.61 % ，and25.66 % ～58.96 % compared to the clogging-free condition. ② At lower flow rates，even though theclogging area offloating debris is small，the flow rate of the drainage pipenetwork during clogging of the storm-water inlet by typical floating debris decreases by 5.64 % ，16.38 % ，13.67%，and 37.48 % （204号 comparedtothcloggingfreecondition.Thisindicatesthatthereductionindrainagecapacityiselatedtotheobstructioncausedby floating debris upstream of the storm-water inlet. ③ When the storm-water inlet has 60% clogging at three different slopes，the flow rates of the drainage pipe network decrease by 15.86 % ，12.33 % ，and 29.61% ，respectively. The slope of the road also has a significant impact on the discharge capacity of the storm-water inlet. ④ The degree of impact of different floating debris on the drainagesystemvariessignificantlyunderdiferentslopes.Theresearch findingsprovideanempiricalbasisforthedesignand evaluationofurbandrainagesystems，whichisofgreatsignificanceforenhancingthefloodpreventioncapabilitiesofurbandrainage systems and responding to extreme weather events.

eyWords：storm-waterinlet;storm-waterinletclogging;typicalfloatingdebris;simulateddrainage test;flooddisaste

近年来，中国城市内涝的频发，极端降雨事件日益常见，不仅加剧了地表水径流的排放压力，更对人民的生命财产安全构成了严重威胁[1-2]。（剩余8603字）