检查巨型废水隧道的表面

全世界的城市正在改编其基础设施，以应对并计划人们和环境的水需求。新西兰最大的废水项目正在进行中，以确保在未来百年中提供最重要的资源，同时改善环境成果并建立当前废物管道的弹性。

The Watercare Central Interceptor Tunnel for this project has reached an exciting stage. The teams’ giant new Tunnel Boring Machine [TBM], built in Germany, Hiwa-i-te-Rangi, reached 1,100m of excavation.

主要的承包商,Ghella Abergeldie联合Venture (GAJV), will take six years to build the Central Interceptor, with most construction work underground. The 190m long TBM will bore through the earth’s substrate and lay segments of the tunnel as it goes.

计划的长度为14.7公里，新的地下隧道正驶向该国最大的废水隧道。可见的地上结构将包含在将建造垂直轴的16个地点，并与当地的下水道网络和溢出点建立连接。

Māngere和May Rd A轴A的第一批轴已经在建设中很好。Māngere轴深40m，隔膜壁从-50到-54m的地下延伸，在新西兰历史上创造了最深的隔膜墙。May Rd轴A的直径较小，深约67m，而较低的40m衬有衬砌的衬套以稳定墙壁。

照片：laiCh Infinity Office软件中显示的Leica Nova MS60捕获的五月垂直轴的频段扫描点云数据]

Comparing Surfaces of Scanned Structures

Ghella Abergeldie调查团队从事该项目的工作配备了最新的Leica Geosystems技术，包括新的Leica Nova MS60多阶段，具有3D激光扫描功能的强大机器人总站。新MS60最有力的功能之一是Inspect Surfaces应用程序，该应用程序在全球范围内被测量师流行，是比较扫描功能表面的宝贵工具。

The survey team positioned the Leica MS60 at the bottom of the vertical shaft using the Resection setup option inLeica Captivate field softwareto inspect the construction. Then they used the Inspect Surfaces App to compare the scan with the shaft design using a “heat map”, which shows inconsistencies between the design and the real structures.

这使GAJV测量师能够直接与现场建设团队进行实时沟通，以立即确定表面上的不一致。

“The Inspect Surfaces App was just what we were looking for. The ability to directly compare reality with design in the field is of huge benefit. The Leica MS60 is our “go-to” instrument, and we are looking forward to using it on different stages of the tunnelling project.”

莱斯·沃利（Les Whalley）- 中央拦截器项目矿山测量师

The Ghella Abergeldie Survey Team has also taken delivery of severalDigital Levelswith invar staffs,Leica Geosystemsrobotic total stations, andcontrollers有了优势，即在同时捕获数据。Leica Infinity office software使团队可以组合和处理数据集以完成质量检查检查。

As this project progresses,Bryan Claridgeand the team from Global Survey New Zealand will provide ongoing technical support and assistance to this highly complex and crucial project.

A Long-Term Strategic Infrastructure Project

There is no doubt that theCentral Interceptor Projectis a crucially important project for Auckland and one of the country’s largest-ever undertaken. It is designed explicitly by Watercare to deliver better and more effective wastewater management within the Auckland region and provide future growth.

从历史上看，较老的雨水管被大雨不堪重负，并溢出到城市的天然水道中。在六年的时间里，将建造中央拦截隧道，以帮助使奥克兰的水道清洁剂。

中央拦截器隧道将从灰色林恩（Gray Lynn）到Māngere废水处理厂的地下延伸。它将在路线上有几个连接的下水道和轴，以收集和将废水转移到隧道中。完成后，它将是新西兰历史上最长的废水隧道。

Ghella Abergeldie has more than 150 years experience with tunnelling and wastewater projects of this size across the globe.