不同型式截流设施截流能力的研究  

RESEARCH ON INTERCEPTING CAPACITY OF DIFFERENT TYPES OF INTERCEPTING FACILITIES

作　　者：曹秀芹 李松岳[1] 杨超 洪国渊 CAO Xiuqin;LI Songyue;YANG Chao;HONG Guoyuan(School of Environment and Energy Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Key Laboratory of Urban Storm Water System and Water Environment(Ministry of Education),Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Beijing City Drainage Refco Group Ltd.,Beijing 100124,China)

机构地区：[1]北京建筑大学环境与能源工程学院,北京100044 [2]北京建筑大学城市雨水系统与水环境教育部重点实验室,北京100044 [3]北京城市排水集团有限责任公司,北京100124

出　　处：《环境工程》2024年第8期51-60,共10页Environmental Engineering

基　　金：中国工程建设标准化协会编制资助项目。

摘　　要：截流设施是水污染防治中的关键构筑物。为探究不同截流设施内流体运动情况及截流能力的确定方法,开展了中试试验与计算流体力学模拟。流体运动分析结果表明,过流断面缩小的束窄作用使得截流管内出现不同水流特征,可划分为宽顶堰流阶段、闸孔自由出流阶段、闸孔淹没出流阶段和满管有压力流阶段。堰的阻水和水流转弯使得堰式截流设施在远离截流管一侧出现易淤积点。槽式截流设施受槽的跌水影响,发生水流破碎并大量掺气,增大水损;槽堰式截流设施在堰槽比<1.2时主要受槽的影响,在堰槽比>1.4时堰的影响占据主导地位。结合流体力学与数学分析推导得到了不同型式截流设施截流能力的确定方法。The interception facility is a key structure in water pollution control.To investigate the fluid movement and the determination method of interception capacity in different interceptor facilities,pilot test,and computational fluid dynamics simulation were conducted.The results of fluid motion analysis showed that the narrowing effect of the overflow section made different water flow characteristics in the interceptor,which can be divided into wide top weir flow stage,gate hole free flow stage,gate hole flooded flow stage,and full tube with pressure flow stage.The water blocking and flow turning of the weir make the weir-type interceptor prone to siltation at the side away from the interceptor.The slot interceptor was influenced by the falling water of the slot,and the water flow fragmentation and a large amount of gas doping occurred,increasing the water loss;the slot and weir interceptor were mainly influenced by the slot,when the ratio of the weir to the slot was less than 1.2,and the influence of the weir dominated when the ratio was greater than 1.4.In this study,combined with hydrodynamics and mathematical analysis,the determination methods of interception capacity of different types of interceptors are derived.

关 键 词：截流设施 截流能力 流体运动 计算流体力学 中试试验 

分 类 号：X52[环境科学与工程—环境工程]