Industry News, trenchless products
GSSI, the world’s leading manufacturer of ground penetrating radar (GPR) equipment, has launched its dynamic new website. With a completely redesigned look and feel that makes it easier than ever to use, the website’s homepage is designed to help customers explore GSSI’s product range. It features a helpful and easy to use product configurator, quick access to the training class calendar, and all the latest news and updates, including the most recent case studies and videos.
The new Innovation Lab section spotlights GSSI’s most recent engineering initiatives and custom solutions. Learn about GSSI’s approach to developing customer solutions and examples of successful processes used to meet customers’ challenges.
The product pages feature a wealth of pictures showing the equipment in action and clear explanations of applications for which it is most useful. Users will also find data examples for each application and product, detailed product specifications, and a host of support material to help users get the most out of the equipment.
The expanded training section – now called GSSI Academy – includes an enhanced class schedule, trainer bios, training request form, and easy to understand explanations about GPR and electromagnetic induction (EM) technology.
The new website also features a greatly expanded support page, which now includes direct access to user manuals and software updates.
For more information on GSSI and to see the new website in action, visit www.geophysical.com.
About GSSI
Geophysical Survey Systems, Inc. is the world leader in the development, manufacture, and sale of ground penetrating radar (GPR) equipment, primarily for the concrete inspection, utility mapping and locating, road and bridge deck evaluation, geophysics, and archaeology markets. Our equipment is used all over the world to explore the subsurface of the earth and to inspect infrastructure systems non-destructively. GSSI created the first commercial GPR system over 45 years ago and continues to provide the widest range and highest quality GPR equipment available today.
Industry News, trenchless products
Challenging Ground Conditions are No Match for Talented Team and their TBM
In Jilin, one of the three provinces of Northeast China, a 7.9 m (26 ft) diameter Robbins
Hard Rock Main Beam TBM has achieved a national record for 7 to 8 meter (23 to 26 ft) machines: 1,423.5 m (4,670 ft) in one month. The record tops a previously-set achievement on the same project from earlier in 2017, when the TBM advanced at a rate of 1,336.8 m (4,386 ft) in one month.
The world record for the size class is held by another Robbins machine, set more than 20 years ago at the Tunnel and Reservoir Plan (TARP) in Chicago, Illinois, USA, for 1,482 m (4,862 ft) in one month. However, given the differences in rock conditions this Jilin project record is very significant. At TARP the rock was relatively homogeneous dolomitic limestone averaging 145 MPa/21,100 psi with occasional rock bolts; at Jilin the rock types were rated from 35 to 206 MPa UCS (5,100 to 30,000 psi), and identified as tuff, granite, sandstone, and andesite with multiple fault zones—conditions requiring nearly continuous ground support.
Despite the difficult conditions, the Jilin machine has achieved an average monthly advance rate of 708.3 m since the start of boring in March 2015—more than three times the average monthly rate of a Drill & Blast operation on another section of the project. “It is now very evident that well-equipped, open-type Main Beam TBMs with specialized features for difficult ground can traverse faults and large water inflows much faster than conventional tunneling methods. This fact, coupled with the high performance capabilities as demonstrated at Jilin, lowers the cost and time to complete long tunnels in difficult ground,” said Robbins President Lok Home.
The Jilin Lot 3 tunnel, which is being bored as part of a water conservation project, will be 24.3 km (15 mi) long when complete. Under contractor Beijing Vibroflotation Engineering Co. Ltd. (BVEC), the machine has excavated 14 km (8.7 mi) of the tunnel as of January 2018.
Throughout its bore, the Main Beam is expected to traverse a total of 24 fault zones. The TBM was designed accordingly, and is equipped with four rock drills, McNally pockets in the roof shield for the ability to install McNally slats, a ring beam erector, and a shotcrete system. The McNally slats were used in difficult ground encountered in the tunnel.
The McNally Roof Support System was designed and patented by C&M McNally and licensed for exclusive use on Robbins TBMs in certain markets. By replacing the roof shield fingers on a Main Beam TBM, the McNally system prevents movement of loose rock in the critical area immediately behind the cutterhead support. The system has been tested and proven on projects worldwide—including the world’s second deepest civil works tunnel, the 2,000 m (1.2 mi) deep Olmos Trans-Andean Tunnel in Peru—to increase advance rates while still maintaining worker safety on Main Beam machines in difficult rock conditions.
The Jilin TBM’s first fault zone was encountered after just 87 m (285 ft) of boring, requiring cooperation between the owner, Jilin Province Water Investment Group Co., Ltd., contractor BVEC, and Robbins field service. Water inflows and collapsing ground in a section measuring 1,196 m (3,926 ft) long were resolved with a combination of McNally slats, grouting, and consolidation of the ground ahead of the machine. Ground support overall consists of wire mesh and shotcrete. Tunnel Reflection Tomography (TRT)—a method of ground prediction using seismic waves—is also being used to detect changing conditions ahead of the TBM.
Despite the initial challenges, the TBM is now achieving between 40 and 60 m (130 to 197 ft) advance per day. “My colleagues and I all feel that the Robbins TBM is very easy to operate. All components of the system work well during operation, which has ensured our good progress,” said by Tao Yong, BVEC Jilin Lot 3 TBM Site Manager.
The Jilin Lot 3 tunnel is part of the Jilin Yinsong Water Supply Project, which will convey water to the central cities of Jilin Province. The large-scale, trans-regional water diversion project is the longest water supply line, measuring 263.5 km (163.7 mi), with the largest number of recipients benefiting from it in the history of Jilin Province. The construction project will divert the water from Fengman Reservoir at the upper reaches of Di’er Songhua River to central regions of Jilin Province experiencing chronic water shortages. These regions include the cities of Changchun and Siping, eight surrounding counties, and 26 villages and towns under their jurisdiction. Tunneling is expected to be complete in late 2018.
Image 1: The 7.9 m (26 ft) Robbins Main Beam TBM achieved a national record for its size class, excavating 1,423.5 m (4,670 ft) in one month.
Image 2: The crew celebrates the national-record-setting Robbins TBM for China’s Jilin Lot 3 tunnel. The machine excavated in far more difficult ground at a higher rock strength than the current world record holder—also a Robbins TBM.
Image 3: The Robbins TBM was designed with pockets in the roof shield, allowing it to install the McNally Roof Support System while boring.
trenchless people
New in 2018 *Retiree Membership*
Retirement is a new beginning, but if you go away we will miss you – so stay with NASTT! Open to any fully retired individual residing in North America who wishes to stay involve with NASTT’s educational and social programs. A Retiree Membership requires a minimum of five-years of NASTT membership prior to retirement and a minimum age of 55. Continue your engagement with NASTT for $40 per year.
Feeding the birds? Shuffleboard? Nah! Don’t sit around (there’s nothing good on tv these days anyway) and don’t pick up those golf clubs just yet. At NASTT there are over 25 committees, mentor/mentee programs and so much more. In trenchless, we go under the hills – not over them!
For question on how to apply for NASTT’s Retiree Membership, please contact Renee Corea, Membership Administrator at rcorea@nastt.org
Industry News, trenchless people
Jacksonville, FL – SippTech LLC CEO/CTO Kent Weisenberg announced recently that the company has finalized a contract with Louisiana Tech’s Trenchless Technology Center for their continued partnership and product analysis of the advancement of Spray in Place Pipe Technology, (SIPP). The awarded contract specifically involves testing of SippTech’s robotic systems and installation of its cutting-edge, filament reinforced composite lining, SippSteel™.
“The Trenchless Technology Center (TTC) is excited to support SippTech through testing, research and developmental support of their innovative Spray-in-Place Pipe (SIPP) technology. This new SIPP technology has high potential to drive the pressure pipe rehabilitation industry forward in the very near future” stated Dr. John Matthews, Director of the TTC and Principal Investigator on the SippSteel™ project. Mr. Matthews further stated, “It is also a monumental moment for the TTC as this is the largest contract awarded to us from a private company since our conception.” Dr. Matthews will be assisted on this four-phased project by co- Principal Investigator’s Dr. Shaurav Alam and Dr. Amin Azimi. Industry professionals, undergraduate and graduate students will also be collaborating during each phase of testing.
SippSteel™ is comprised of a composite lining of two dissimilar lining material layers and a carbon fiber filament reinforcement, which are applied robotically in a single pass through the pipe system. The robotic apparatus is self-propelled, and all its mechanical functionalities are controlled autonomously by internal sensors and computer vision. Employing both individually specific and a synergetic combination of computer vision, LIDAR, ultrasound, RF, Wi-Fi, gyroscope, accelerometer and machine learning technologies, the robot can precisely navigate and apply the SippSteel™ composite inside of the pipe. The device can be operated via umbilical or autonomously providing lining lengths of more than a mile from one access point in the pipe.
“The SippSteel™ technology addresses a multitude of customer needs as well as resolving systemic problems in the trenchless technology sector. Today’s pipeline rehabilitation industry has long been searching for an innovative, and more importantly, versatile technology to fulfill all the structurally independent liner requirements” Mr. Weisenberg stated.
Innovative components that ensure that the SIPP system can deliver:
- The ability to provide structurally independent rehabilitation; therefore, significantly optimizing the cost effectiveness and efficacy of the rehabilitation method as well as increasing the design life of the pipeline.
- The ability to rehabilitate long lengths of pipe; therefore, substantially reducing installation time as well as costly and environmentally invasive excavations.
- The ability to negotiate through pipe bends and valves; therefore, substantially reducing excavations that increase costs and disrupt the public.
- The ability to provide a thinner liner system without a resulting annulus between the liner and the host pipe; thereby increasing the comparative cross-sectional diameter and subsequent flow capacity while impeding all potential for infiltration behind the liner which can result in hydraulic failure.
The Trenchless Technology Center (TTC) was initiated as the Trenchless Excavation Center in 1989 and formally established as the Trenchless Technology Center in November 1991. It was created to promote research, development and technology transfer in the trenchless technology industry.
“After several years of painstaking R&D we are tremendously enthusiastic to have entered the final analysis phase with such a highly credible institution as the TTC for the final verification of our compiled scientific testing and empirical data.” stated, Mr. Weisenberg. “We are proud to be revealing SippSteel™ and its capabilities which will revolutionize the industry for the rehabilitation of pressure pipelines in an extensive range of diameters.” Mr. Weisenberg noted.
Please visit www.sipptech.com for more information on Spray in Place Pipe technology.
Contact:
Tiffany Laufer
SippTech Technologies, LLC.
tiffanyl@sipptech.com
904.374.5606
Industry News, trenchless people
You are invited to participate in the 8th Conference of Trenchless Technologies NO-DIG POLAND, which is going to take place on 18-19 April 2018 in Kielce.
The conference began in 2005 and takes place every second year, and each of the previous editions were attended by a number of domestic and international participants (also from outside of Europe), including representatives from the scientific community, water supply and sewerage companies, design and construction companies, manufacturers of materials and equipment used in trenchless technologies.
The topics of the upcoming conference include issues closely related to the use of trenchless technologies in design, construction and renewal of underground infrastructure in the water, sewage, gas, road and rail industries, as well as in trenchless infrastructure tunnels.
The conference is an excellent opportunity to share knowledge and experience between public administration staff, scientists and professionals working in the water and wastewater sector.
For more information visit the conference website.
GSSI, the world’s leading manufacturer of ground penetrating radar (GPR) equipment, has launched its dynamic new website. With a completely redesigned look and feel that makes it easier than ever to use, the website’s homepage is designed to help customers explore GSSI’s product range. It features a helpful and easy to use product configurator, quick access to the training class calendar, and all the latest news and updates, including the most recent case studies and videos.
The new Innovation Lab section spotlights GSSI’s most recent engineering initiatives and custom solutions. Learn about GSSI’s approach to developing customer solutions and examples of successful processes used to meet customers’ challenges.
