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首页> 外文会议>American Society of Civil Engineers(ASCE) International Conference on Pipeline Engineering and Construction v.2; 20030713-20030716; Baltimore,MD; US >Case Study: Using Trenchless Technologies With Conventional Methods To Construct A Sanitary Sewer Rehabilitation Improvements Project
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Case Study: Using Trenchless Technologies With Conventional Methods To Construct A Sanitary Sewer Rehabilitation Improvements Project

机译：案例研究：结合传统方法使用无沟渠技术来建设下水道卫生改造项目

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摘要

Sanitary sewer overflows (SSOs) are a nationwide problem caused by aging infrastructure. Increased flows from a growing user base, coupled with the introduction of rain water and groundwater through leaky joints and system breaks, are the cause of SSOs. The City of St. Petersburg's original sanitary sewer system was constructed in 1933, with most of the remaining portion built between 1950 and 1962. The system is divided into four service areas designated as: Northwest (NW), Northeast (NE), Southwest (SW), and Southeast (SE). Each of these service areas has a wastewater reclamation facility associated with the system. Combined, these areas include approximately 19,400 manholes, 900 miles of collector sewer, 470 miles of sewer lateral, 77 lift stations, and 49 miles of force main. Significant rain events and a hurricane in 1995 accentuated the SSO problem within the City system. In response to this situation, the State of Florida served the City of St. Petersburg with a consent order, which required a complete analysis of the sanitary sewer system and implementation of a master plan for improvements. The City conducted an evaluation of its sanitary sewer system, and the results were presented in a report entitled "Sewer System Evaluation and Management Program" (SSEMP) (March, 1998). Several significant rehabilitation, maintenance, and capital improvement projects were identified in this evaluation to prevent SSOs during storm events and to comply with the State's consent order. The topic of this paper is one of the projects recommended for immediate implementation in the SSEMP report. This project will be implemented in the NW service area. The project involves upgrading approximately 16,000 feet of existing 10-through 30-inch-diameter gravity sewer pipe with 15- through 42-inch sewers, respectively. This is a "Priority One" project within the City's NW Service area and one of the largest sanitary sewer replacement projects the City has undertaken in recent years. The following alternative key design and construction technology issues were considered in developing final design criteria for this project: 1. Parallel replacement versus direct replacement 2. Non-metallic material specifications for sewer pipe and manhole protection system 3. Detailed route analysis to compare replacing an existing sewer with a larger diameter sewer to supplementing capacity with a second equivalent size sewer 4. Trenchless technologies versus jack and bore installation 5. Existing 10-foot by 11-foot by 16-foot-deep box culvert expansion 6. Alternative route analysis and installation alternatives for sewer replacement construction in a major roadway 7. Pipe bursting alternative.
机译：下水道溢水（SSO）是由基础设施老化导致的全国性问题。来自不断增长的用户群的流量增加，以及通过泄漏的接头和系统中断引入雨水和地下水，是造成SSO的原因。圣彼得堡市最初的下水道系统建于1933年，其余大部分建于1950年至1962年之间。该系统分为四个服务区域，分别指定为：西北（NW），东北（NE），西南（ SW）和Southeast（SE）。这些服务区域中的每一个都有与系统关联的废水回收设施。这些区域加在一起，包括大约19,400个沙井，900英里的集水器下水道，470英里的下水道侧向，77个提升站和49英里的总力。 1995年的重大降雨事件和飓风加剧了纽约市系统内的SSO问题。针对这种情况，佛罗里达州以同意书的形式向圣彼得堡市提供了服务，该命令要求对下水道的下水道系统进行全面分析，并执行总体改进计划。纽约市对其下水道系统进行了评估，其结果在一份名为“下水道系统评估和管理计划”（SSEMP）的报告中介绍（1998年3月）。在此评估中，确定了几个重大的修复，维护和资本改善项目，以防止暴风雨期间的SSO并遵守纽约州的同意令。本文的主题是SSEMP报告中建议立即实施的项目之一。该项目将在西北服务区实施。该项目涉及将现有的约16,000英尺的现有直径10至30英寸的重力下水道分别升级为15至42英寸的下水道。这是纽约市西北区服务区内的“优先一类”项目，也是纽约市近年来开展的最大的污水管道更换项目之一。在制定此项目的最终设计标准时，考虑了以下替代性关键设计和施工技术问题：1.并行更换与直接更换2.下水道和人孔保护系统的非金属材料规格3.详细的路线分析以比较更换现有的具有较大直径下水道的下水道，以增加第二个同等大小的下水道的容量。4.采用非开挖技术而不是千斤顶和钻孔安装5.现有的10英尺×11英尺×16英尺深的箱涵扩展6.替代路线分析和主要道路下水道更换施工的安装替代方案7.管道爆破替代方案。

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