某丘陵城市合流制排水箱涵问题诊断与治理对策
Diagnosis and treatment strategies for combined drainage box culverts in hilly cities
米鑫豪 1孙永利 1刘龙志 2张维 1李鹏峰 1马宏伟 1隋克俭 1王万琼3
作者信息
- 1. 中国市政工程华北设计研究总院有限公司,天津 300074;天津市城镇排水系统重点实验室,天津 300074
- 2. 长江生态环保集团有限公司,武汉 430014
- 3. 中国长江三峡集团有限公司长江生态环境工程研究中心,武汉 430014
- 折叠
摘要
采用三维激光扫描、人工排查技术对南方某丘陵城市一典型合流制排水箱涵开展了排口调查、缺陷检测、安全检测等工作,累计完成箱涵检测1 768 m.结果显示,箱涵内部存在224个排口,缺陷52处,底泥淤积深度在0.05～0.4 m,依据《暗渠化河道安全检测与评估技术规程》进行安全结构评估为Ⅳ级.基于检测结果,识别诊断出该箱涵存在涵内污水直排、雨季溢流污染严重、排水过流能力不足、安全运行风险较高的问题,明确应遵循"污涝同治,安全运行"的治理理念,并针对性地提出了基于近期清污分流、远期排水安全提升的阶段性目标的箱涵治理对策.
Abstract
A typical combined sewer drainage culvert in a hilly city in southern China was in-vestigated for discharge outlets,defects,and safety using 3D laser scanning and manual inspection techniques.A total of 1 768 m of culvert inspections were completed.The results showed that there were 224 discharge outlets and 52 defects inside the culvert,with sediment deposition depths ranging from 0.05 m to 0.4 m.According to the Technical Regulations for Safety Inspection and Evaluation of Underdrain River Channels,the safety structure was evaluated as Level Ⅳ.Based on the detection results,it was identified and diagnosed that the culvert has problems such as direct discharge of sewage inside the culvert,severe overflow pollution during the rainy season,insuffi-cient drainage capacity,and high safety operation risks.It was clarified that the governance concept of"treating sewage and flood together and ensuring safe operation"should be followed,and targe-ted measures for culvert governance based on short-term clean water and sewage diversion and long-term drainage safety improvement were proposed.
关键词
合流制箱涵/污水直排/溢流污染/结构缺陷/清污分流/排涝安全Key words
Combined sewer box culvert/Direct discharge of sewage/Overflow pollution/Structural defects/Separation of clean and dirty water/Drainage safety引用本文复制引用
出版年
2024
NETL
NSTL
万方数据