监视克里斯蒂安斯塔德的中央污水处理厂
案例分析
作者：弗雷德里克·萨默维尔
In order for Kristianstad to be able to grow and meet the needs of the future, a major rebuilding and expansion of the municipality's central sewage treatment plant has to take place. In the ongoing foundation works, there are several challenges. One for example, is that most of the existing pipes and sewers in the plant is in very loose ground as the area was formerly a dried-up lake.
To monitor ground movements, the measurement consulting companyMätrix AB在必须将桩驱动到地面时，使用Leica Geosystems的设备进行了监测测量。
A few hundred meters from the treatment plant in Kristianstad stands Sweden's lowest ground point at 2.32 meters below sea level. “The low level meant that ground conditions at the construction site are one of Sweden's worst”, says Evelina Nilsson, measurement consultant, CEO and founder of Mätrix AB, which is based in Svängsta.
由于地面条件是如此差，因此必须将近1,500块混凝土桩堆积到一个已经存在的管道和管道基础设施的区域。当执行如此广泛的堆积时，需要仔细检查，因为地面上的质量运动可能会导致周围地区的转移和定居点。这可能是毁灭性的，增加了巨大的成本和损失。
High quality in the result through monitoring
“当我们收到测量分配时，我们评估了许多可能的解决方案，以如何执行监视。我们得出的结论是，与自动监测测量值相比，手动测量不会给出足够的全面结果，因为需要频繁的时间间隔和相对较长的时间内连续监测如此多的测量点。” Evelina解释说。
After consulting with Frederick Somerville, Geomatics Technical Support at Leica Geosystems, a customised monitoring solution was created based on theLeica Nova MS50total station, fourLeica Viva GS14GNSS antennas that Mätrix already owned, a new Leica ComBox for data transmission and the softwareLeica GeoMoS控制测量和现在，Leica Geomos！to analyse the data.
In addition, a number ofLeica Nivel 220tilt sensors, were mounted on some of the worksite’s surrounding buildings to check for any effects. Being very sensitive sensors, with a tolerance of 0.0047 mm/m, the Nivel 220 gives very early indications if something is happening to the inclination of the buildings on which they are mounted.
“Initially, we measured in the same way around the clock, but when the piling work turned out to be causing too much disturbance in the total station measurements, we chose during the day to only use the tilt sensors. We set them up such that they sent across movement data every three minutes and the tilt sensors provided results and sounded alarms if something was happening outside the limit values” says Evelina.
“Thanks to the solution, we were able to meet the customer's requirements for accuracy and also get an automated daily report” she adds.
监视的结果是什么？
“The measurements showed that there were movements in the ground but that they were manageable and not as large as was initially feared. If we had not performed these measurements however, no one would have known for sure and could only have made assumptions. Thanks to the measurements, it was possible for the piling to be carried out in a controlled manner, which also left everyone feeling secure and in control of the situation.”
The data produced from the monitoring measurements were also of high quality and provided a lot of information.
“With manual measurement, we were able to measure all points but could only repeat the cycle a few times whereas with automated monitoring, we were able to make many measurements of the same points every night” says Evelina.
With the help of the GeoMoS Now! software, all captured data is visualised.
“With GeoMoS Now!, graphs and reports can be easily created for everyone involved in the project and used as the basis for a good analysis. This allowed us to come up with improvement proposals and the geo-technicians could also review the data before making any decisions.”
Saved costs for the customer
测量的具体和积极作用是可以验证从一开始投射的打桩方法。如果地面移动了很多，可以使用另一种更昂贵的打桩方法。得益于自动监控结果，这得到了避免，从而阻止了成本的增加。
Another example of saved costs was the securing of a large 1200 mm line which, like a carotid artery, transports all the water from one part of the treatment plant to another.
“如果由于定居点而损坏了基础设施，那将是一场灾难，整个工厂都必须关闭。现在，我们的测量可以遵循运动，并表明这种风险不存在。”
Award-winning innovator and young measurement consulting company
MätrixAg是一家年轻的公司，由Evelina Nilsson于2014年成立，当时她只有23岁。今天，它有五名员工，正在招募另外两名员工。2020年，Mätrix在年轻的年轻企业家比赛中排名第三。由贸易协会Företagarna组织。
The company profiles itself with a high level of knowledge, innovation and first-class service. Evelina worked in the service trade during her youth and therefore has service mindedness ingrained in her.
“客户服务非常重要，我们不断考虑客户的需求。我们希望在传统行业中发挥创新性，并始终努力以正确的质量，正确的范围和正确的时间提供服务。她说：“我们在工作和彼此紧密合作，集思广益的解决方案，想法，并在需要时不断支持。”
Like the accuracy
Mätrix works mainly with measurement assignments in building production and construction projects with concrete; meaning housing, real estate, industrial buildings and sports facilities.
“We perform a lot of precision measurements and have niched ourselves towards assignments where accuracy is especially important and where a little extra thinking is needed. Personally, I think it's the most fun when it takes a little extra time to get everything right; it really satisfies my sense of order” says Evelina.
All measuring equipment that Mätrix uses comes from Leica Geosystems and they also have aCCP (Customer Care Packages)support agreement.
“We have chosen to buy everything from Leica Geosystems not only because the equipment is of the highest quality but also because they maintain a very high level of service. I think they have a unique personal approach and they always want to give their utmost to us as a customer, regardless of whether it is about finding new solutions, taking care of support matters or complexities to provide the fastest possible help on site.”
Will you continue with monitoring measurement?
“瑞典的监测测量正在上升。许多人认为，项目必须很大才能有用，但我看到即使在较小的项目中也有巨大的价值。” Evelina说。“这显然是我们在MätrixAB希望进一步发展的服务。这是控制测量领域的一个很好的补充，这非常令人兴奋。”
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