What is the value of a city's sewer infrastructure? Consider the situation in downtown Honolulu, Hawaii, in March 2006: a 42-in. pressurized force main in a highly populated downtown area cracked, creating the risk of raw sewage backing up into the many hotels, homes and businesses in the popular resort destination of Waikiki. Public works officials, engineers and contractors in Honolulu solved the problem by installing via microtunnel the new 72-in. Beachwalk Force Main sewer that includes an S-curve - the first successful S-curve micro-tunneling installation in the United States. The project was made more difficult because the line had to traverse underground around two bridge abutments and beneath the Ala Wai Canal in busy Waikiki. The project presented significant engineering challenges, but thanks to thorough research, testing and choosing the right pipe combinations and equipment for the job, the project was completed successfully with minimal surface disruption.
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机译：城市下水道基础设施的价值是什么？考虑一下2006年3月夏威夷檀香山市中心的情况：一个42英寸长。人口稠密的市中心地区的主要压力管道破裂，存在原始污水回流到威基基热门度假胜地的许多酒店，家庭和企业的风险。檀香山的公共工程官员，工程师和承包商通过微隧道安装新的72英寸解决了该问题。包括S曲线的Beachwalk Force Main下水道-美国第一个成功的S曲线微隧道安装。该项目变得更加困难，因为线路必须穿越地下的两个桥台，并在繁忙的威基基的阿拉威运河下方。该项目提出了巨大的工程挑战，但是由于进行了深入的研究，测试和选择了合适的管道组合以及适合该设备的设备，该项目得以成功完成，而对表面的干扰最小。
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