成都市中心城区深层隧道排水系统规划研究

Planning Study of Deep Tunnel Drainage System in Central Area of Chengdu

"水少为忧、水脏为患、水多为灾",近几年"水问题"成为了我国大多数城市可持续发展急待解决的一大难题。成都市中心城区经过多年的快速发展和高强度开发建设,也暴露出一些城市病。在城市排水系统和水环境方面,问题集中表现在排水管网及污水处理能力不足、城市排涝能力偏低、城市雨水径流污染问题突出、局部合流制系统与雨水下河口未得到有效整治4个方面。针对以上问题对标国内外先进城市建设经验,本次规划研究对浅层改造方案和深层隧道调蓄方案进行技术研究分析后,推荐采用"两环四射"深层调蓄隧道为核心的深层隧道排水系统,解决成都市中心城区当前以及远期发展将面临的城市排水系统问题及水环境问题。

In recent years, the 'water problems' of 'less water as the sorrow, dirty water as the danger, and more water as the disaster' become the difficulties urgently to solve in the sustainable development of many cities in China. Some city disasters also expose in the central area of Chengdu after the rapid development and high strength development construction for many years. The problems of urban drainage system and water environment are concentrated in four aspects of deficient drainage pipe network and sewage treatment capacity, lower urban waterlogging drainage capacity, serious urban rainwater runoff pollution, and not effectively treated local combined sewage system and rainwater into estuary. Aimed at the above problems, and according to the advanced city construction experience a home and abroad, the article studies and analyzes the shallow reconstruction scheme and the deep tunnel storage scheme, and recommends the 'two-ring four-shoot' deep storage tunnel as the key deep tunnel drainage system in order to solve the problems of urban drainage system and water environment faced in the current and long-term developments of central area in Chengdu.