Doha South Sewage Infrastructure Programme

The economy of the State of Qatar has grown at annual double-digit rates in recent years. The State’s capital city Doha will serve as the main host city of the FIFA World Cup 2022 games, requiring tremendous preparations to provide and maintain first-class networks of highways, utilities and related services. 

Additionally, 卡塔尔国制定了卡塔尔2030年国家愿景，设想通过执行复杂的工程项目，不断升级首页，为快速增长的公民和居民提供世界一流、最先进和最新的首页.

这些因素导致了大量的项目和所涉工作的复杂性，因此对国家公共工程局(Ashghal)的资源提出了前所未有的要求。.

多哈南部污水首页计划(DSSIP)就是其中之一，该计划以前被称为多哈内部污水处理实施战略(IDRIS)计划, a world-class solution developed by Ashghal, 改善和扩大污水处理首页，以应付未来80年预计的人口增长.

Jacobs is serving as the Program Management and Construction Oversight Consultant for the DSSIP program, which involves upgrading and expanding the sewerage infrastructure in Doha’s oldest catchment, which is becoming overloaded due to the scale and pace of development. 一项主要的隧道截流计划正在取代现有的浅层污水渠和众多泵房，以满足这一不断发展的地区的长远需要. 

多哈南部污水首页计划(DSSIP)是Ashghal开发的一项世界级解决方案，旨在升级和扩大其污水首页，并适应未来80年的预计人口增长.

原先的污水排放计划包括横向截流污水渠，用以截流及纾缓现有超载的系统及其众多泵房. 水流将在重力作用下通过主干渠，向南行驶45公里，到达位于隧道下游末端的终端泵站, then lifted to the new Doha South Sewage Treatment Works. 污水将作为处理过的污水回收，并与适于灌溉的处理过的水一起返回多哈地区.

Jacobs, 作为项目管理顾问和“工程师”管理Ashghal与负责项目交付的各方之间的接口，并提供总体项目监督.

Ashghal appointed Jacobs to manage the whole program, from inception to handing over, and ensure that the desired program objectives of health and safety, quality, cost and schedule are achieved.

The original program includes several packages:

1. Main trunk sewer tunnels, 45-kilometers of gravity based main trunk sewer with internal diameter ranging from 3 to 4.5 meters, that will link a number of areas in the south of Doha to the sewage network. The deep trunk sewer is also comprised of 26 deep shafts. 因此，污水干渠将通过深层抽水站将污水输送到现有的多哈南部污水处理厂, 通过全面控制污水处理厂和输送系统的异味，减少对环境的影响, 并减少因现有排水管网水压过大而导致污水外溢所造成的其他环境问题, where sewage flows exceed its capacity.
2. Lateral interceptor sewers 70-kilometers of micro-tunneled pipelines using more than 250 shafts , which will convey flows from areas in the center of Doha, Wakra-Wukair and Mesaieed to the main trunk sewer tunnels.)
3. 新多哈南污水处理厂的终端泵房-包括世界上最大和最深的污水泵房之一.
4. Treated sewage effluent (TSE) pumping stations.
5. TSE return mains.
6. New Doha South STW, with state of art treatment technology and an initial treatment capacity of 500,000 m3/day and ultimate built-out capacity of 1 Million m3/day.

Some of the salient and innovative solutions employed by the team in this project include:

• 采用一体化管片衬砌，结合了防腐衬砌和管片衬砌的应用. 这种方法节省了时间，完全不需要进行二次隧道衬砌施工.
• Use of Vertical Sinking Machines, for the first time in the region, to construct deep shafts in the congested areas for minimum disruption to public.
• Use of advanced earth pressure balancing TBMs considering the complex geology and highly constrained schedules.

The deep trunk sewer tunnel, the DSSIP Main Trunk Sewer MTS-01 Project, received recognition as Engineering News-Record’s 2019 Global Best Project in the Water/Wastewater Category. MTS-01 is also the first project in the region to achieve CEEQUAL’s Design and Build Good Rating Certification. Also, CEEQUAL awarded the Exceptional Achievement Award to DSSIP MTS in the Water Environment and Resources Category.

DSSIP and Ashghal have received two consecutive gold achievement awards from the Royal Society for the Prevention of Accidents (RoSPA). The award acknowledges the program’s outstanding occupational health and safety performance during 2017 and 2018, recognizing a strong health and safety culture across the project team, effective risk management practices and exemplary health and safety track record.

Oracle also awarded Ashghal the Construction and Engineering Excellence Award for Enterprise Wide Standardization in Public Infrastructure for use of digital engineering for process efficiency, resource utilization and record management in DSSIP.

The Doha South Sewage Infrastructure Programme is a landmark program for the region, and its impact spans far beyond the project itself. An important feature of DSSIP is the flexibility to be linked to future infrastructure projects, and when completed in full, 它将使目前位于多哈南部住宅区和商业区的30多个旧泵站退役.