Industry News, trenchless products, trenchless projects
40 Years after Original Tunnel, Robbins Returns to Russia
In 1979, a 4.56 m diameter Robbins Double Shield TBM was delivered to bore the Severomuysky Service Tunnel, a 15.3 km long railway through the remote mountains of Siberia. Now, 40 years after the original machine was delivered, Robbins is returning to the role. Two 10.37 m diameter Crossover (XRE) TBMs will bore the second Severomuysky Tunnel, clocking in at 15.5 km long and running through mixed ground and fault zones. The new rail line is needed due to limitations on carrying capacity on the current Baikal-Amur Mainline (BAM) railway through the area. Currently 16 million tonnes of cargo are carried through the existing Severomuysky tunnel but the Russian Government wants to increase cargo carrying capacity by more than six times in the region.
The largest global anthracite producer, Sibanthracite Group, is taking on the tunnel construction with management by VostokCoal Management Company. The companies, owned by Dmitry Bosov, aim to increase coal transport by up to 100 million tonnes per year through the addition of the second tunnel. “Robbins has established itself on the market as the best manufacturer of hard rock machines, which are able to provide the maximum penetration rate in hard rock. This is one of the determining factors in connection with the tight deadlines for the implementation of our project. Also, Robbins is the only manufacturer to build the Crossover TBM,” said a representative of Sibanthracite Group. Other aspects of the supply include a continuous conveyor for muck removal, rolling stock, spare parts, and cutting tools.
Sibanthracite Group chose Crossover technology for a number of reasons, geology being chief among them. “A Crossover type tunnel boring machine was selected for tunneling due to the fact that the construction of the tunnel will be carried out in difficult heterogeneous geological conditions (from unstable waterlogged soils to hard rock). The Crossover is able to operate in two modes: Open mode, used while boring in hard rock formations, and closed mode (with earth pressure balance), used when boring in unstable water-logged soils,” said the Sibanthracite representative.
The lessons learned during the first Severomuysky tunnel—the importance of probe drilling, consolidation grouting, and preventing a shielded machine from becoming stuck in fault zones or squeezing ground—are all part of the Crossover TBM solution. “I was a young engineer working at Robbins when the Double Shield TBM was delivered for the first tunnel, so it is a special honor to bring this new technology to the second Severomuysky Tunnel in Siberia,” said Robbins President Lok Home. “Per the contract Robbins is supplying Crossover TBMs for the new parallel rail tunnel—these machines are made to bore in highly variable ground conditions while maintaining good advance rates. With our latest technology we hope to again prove TBMs are the better choice over Drill and Blast when difficult ground conditions are to be encountered.”
The machines will be designed for varying water pressures, ranging from 5 to 20 bar. They will feature Water Inflow Control, a system that seals off the face and periphery and creates a safe working environment in which to dewater and consolidate ground. The machines will feature probe drill ports and capabilities for 360-degree probe drilling and grouting ahead of the excavation face, while the Robbins Torque-Shift System will enable the machines to bore through collapsing ground and other situations that demand high torque. The machines will also be designed with a belt conveyor in hard rock mode that can be switched out with a screw conveyor when crossing into soft ground.
Crews will bore through the Severomuysky Ridge, a mountain range in Buryatia and part of the Stanovoy Highlands, which separates the basins of the Upper Angara and Muya Rivers. “The second Severomuysky tunnel is located in one of the most geologically active areas of our planet—on the north-eastern flank of the Baikal rift zone. The region is characterized by high seismic activity, difficult geological and hydrogeological conditions against the backdrop of a harsh climate (the summer period lasts only 80-100 days, temperatures from + 39°C in summer to -58°C in winter). The construction work on the portals is complicated by the presence of permafrost as well,” said the Sibanthracite representative. Construction of the new tunnel is expected to begin in 2020 and take five years.
Image 1: The original 4.56 m diameter Double Shield machine was supplied for the Severomuysky Service Tunnel in 1979.
Image 2: The new 10.37 m Robbins Crossover (XRE) TBMs are designed for highly variable geology and will have a belt conveyor that can be switched out with a screw conveyor in challenging conditions.
Industry News, trenchless products
November 2019: Barbco, Inc. Co-Owner and CEO, Anthony R. Barbera was granted U.S. Patent #10465460 for the Barbco FlexBor tooling and technology on November 5, 2019! This is a proud moment in this East Canton, Ohio manufacturer’s storied 30-year history of driving the trenchless technology, horizontal boring, and underground manufacturing industries forward with world class capital equipment and cutting-edge technology. The FlexBor is an extremely cost-effective, environmentally safe trenchless method and tooling. The FlexBor is designed to virtually eliminate “frac-outs” / ”inadvertent returns” that are often associated with horizontal directional drilling and the use of bentonite.
The Patent Abstract reads: “A cutting assembly and method for drilling an underground borehole. The cutting assembly includes front and rear cutting heads of different diameters mounted on a shaft. An air passage defined through the cutting assembly may be placed in fluid communication with a pressurized remote air source and with a bore of a casing extending rearwardly from the cutting assembly. Pressurized air flows through the air passage and entrains cuttings produced by the front and rear cutting heads. A housing extends rearwardly from the larger diameter rear cutting head and an auger provided within the housing aids in directing cuttings into the casing. The auger rotates independently of the rest of the cutting assembly and may be configured to further reduce the size of the cuttings. A collar on the housing seals the borehole cut by the rear cutting assembly and aids in preventing frac-out.”
Visit the Barbco website for more details.
Industry News, trenchless people, trenchless products
Conyers, GA – November 15, 2019 – USL Group announced today that it has acquired Logiball Inc., a leading manufacturer of trenchless pipe rehabilitation equipment headquartered in Quebec, Canada. Terms of the transaction were not disclosed.
Founded in the early 1980s, Logiball holds a leading position in the manufacturing and supply of inflatable pipe plugs and test-and-seal injection packers for the maintenance and trenchless rehabilitation of collection systems and gravity pipes compromised by groundwater intrusion – a sizable segment of the general infrastructure sector known as the Inflow and Infiltration (I&I) market.
Logiball’s main product range is test-and-seal injection packers, which are used to confine and apply grouts for the repair of points of water ingress and egress from pipes, such as leaking joints or cracks. Logiball is the primary producer of these specialized products, which has allowed the company to forge a strong position in the niche of the I&I market.
“This acquisition provides channel synergies for both Logiball and our Prime Resins business, which makes chemical grouts. It will enable both companies to expand their reach in the growing I&I market space by leveraging their joint reputations and product offerings” said John Taylor, Director at USL Group. “Prime Resins has actively pursued growth in this market space, and the clear synergies with Logiball will lead to product improvement and expansion of use that will benefit the Trenchless Rehabilitation industry as a whole”.
About USL
Founded in 1981, USL Group of companies are market leaders in the provision of specialist civil engineering and construction solutions. For nearly four decades, USL Group has been at the forefront of cutting-edge resin and cementitious technology, combining high performing innovative products, first class operations, expert technical support and unrivalled customer service. Specializing in expansion joints, structural and liquid waterproofing, construction chemicals, concrete repair systems, injection resins and specialist safety & anti-slip products, USL boasts a comprehensive portfolio of products and a highly developed global network. For more information about USL, visit www.uslgroup.com.
Industry News, trenchless people, trenchless products
Recently two of NASTT’s very dedicated volunteers, Dennis Walsh and George Ragula, both of PSE&G, met with our Rutgers Student Chapter to give a presentation.
The presentation covered a project that is the new world record diameter 42” CIPL renewal that included an extremely complicated piping geometry involving seven bends in a u-tube configuration crossing a major parkway with a significant change in vertical elevation.
The project presentation was fascinating and the students were thrilled to have two industry experts on hand to answer questions and provide insight. Future presentations and job site visits are in the works.
Pictured are volunteers and student members:
Left to right, front row: Max Ritner, Sharon Xiao, Riya Maniar and Kendi Bailey.
Left to right, back row: Amil Muminovic, Demetra Tampasis, George Ragula, Ian Walczak, Anthony Genchi, Dennis Walsh and Troy Dittenhofer.
Industry News, trenchless products, trenchless projects
The following is a post from Akkerman. For more details and additional job site photos, visit their website.
Northwest Boring Co. Inc. (NWB) of Woodinville, WA was subcontracted by Shoreline Construction for an emergency replacement of the City of Mill Creek’s failed 30-inch CMP stormwater pipeline that had been causing flooding in the suburban neighborhood, just north of Seattle.
The need for the stormwater system’s repair became apparent when a sinkhole appeared in December 2017, between the Sweetwater Ranch and Douglas Fir neighborhoods. Temporary repair work was conducted, but another sinkhole developed in the same location just one month later. After inspection, it was determined that a failed coupler and damage to the 36-inch corrugated metal stormwater pipe was the root cause.
Because the City of Mill Creek had declared this an emergency project with a budget less than $300,000, a public bidding process was not required. Shoreline Construction was selected as the contractor, who subcontracted the trenchless work to NWB.
The alignments scheduled for replacement were positioned within a narrow easement between two homes at an 11-foot depth in difficult ground. With minimal real estate, the depth of installation and geological conditions, NWB knew that their guided boring system would be an ideal installation choice for the new stormwater connections.
NWB employed the use of their Akkerman GBM 4800 Series Jacking Frame with a high-torque casing adapter attachment for auger boring. The combination made it possible to install the pilot tube passes and 10-foot pipe segments with the torque and jacking force of an auger boring machine but within a smaller shaft. The design utilized one launch shaft to initiate the runs from both directions which further reduced disruption to resident’s properties and saved on project costs.
The ground conditions present were glacial till with rock, which is typical for this region. This ground cannot be displaced with a standard pilot tube steering head so NWB arranged to use special tooling for up to 12,000 psi UCS ground. The drill bit of choice, the Rock Drill Adapter with TriHawk® drill bit, lead the pilot tube passes which established the 140 and 110-linear foot alignments at the necessary line and grade for gravity flow. Simultaneously, a soil appropriate lubrication regime was applied to flush the excavated cuttings back to the launch shaft for removal. (continued)
Crews then prepared to direct jack the 110 and 140-linear foot, 36-inch steel casing. In advance of the casing, NWB launched a guide rod swivel with a 36-inch cutter head which matched the 36-inch casing diameter. The swivel portion of the tooling absorbed the auger rotation while the cutter head, equipped with durable carbide gage cutter bit tooling, excavated the difficult ground. This second pass was completed with the guide rod swivel with cutter head for both stormwater sections.
The alignments were then finished with 27-inch Vylon® carrier pipe was positioned inside the casing and connections to the existing infrastructure were made.
From start to finish the entire project was finalized in just under a month, resolving the City’s dilemma in a timely manner with minor intrusiveness to residents.
Industry News, trenchless products
Perfect for hard rock and fractured ground formations
THOMPSON, CONNECTICUT USA, August, 2019:
Numa, the world’s leading drilling technology provider, has released a range of HDD Drilling Systems designed for productive and efficient drilling in hard rock and fractured ground formations.
“Numa has a long history of serving the HDD market and with our range of HDD Drilling Systems we enhance our ability to serve our customers with the right products for the job,” said Numa President, Ralph Leonard. “Our high quality, Made in the USA HDD products provide the right balance of performance and dependability without sacrificing tool life.”
Numa’s HDD Drilling Systems consist of a variety of HDD components including hammers, bits, side load sonde housings, bent subs, and adaptors which are capable of drilling holes 4″ to 7-1/2″ (102 mm to 191 mm) in diameter. Some of the many benefits Numa touts for the HDD hammer line include: improved steerability, fast penetration rate, simplified field maintenance, reduced air requirements, and lower overall cost per foot.
With deep experience in rock drilling, Numa purposely designed their HDD hammers to drill longer in difficult rock conditions. Furthermore, a single bore design allows for a maximum bore diameter in conjunction with providing optimum life against abrasion. The full line of Numa’s HDD Drilling Systems is made up of the models indicated below with a full description on their website product page.
- HDD 35 for drilling holes 3-7/8” to 4” (98 mm – 102 mm) in diameter
- HDD 40 for drilling holes 4-3/4” to 5” (121 mm – 127 mm) in diameter
- HDD 50 for drilling holes 5-3/4” to 6-1/8” (146 mm – 156 mm) in diameter
- HDD 60 for drilling holes 7″ to 7-1/2″ (178 mm – 191 mm) in diameter
Numa will be featuring their HDD Drilling Systems in booth #1905 at the ICUEE 2019 show happening October 1-3 in Louisville, Kentucky.
ABOUT NUMA
Numa is the world’s leading drilling technology provider, dedicated to ongoing product innovation and results-oriented consistency. We’ve built a strong legacy of high quality, U.S. made hammers and bits for drilling holes 3½ – 50½ inches (89 -1283 mm) in diameter. With over 100 hammer and bit products serving 11 different industries, our products are capable of drilling vertical, horizontal, and reverse circulation holes in hard rock and unconsolidated formations.
In 1979, a 4.56 m diameter Robbins Double Shield TBM was delivered to bore the Severomuysky Service Tunnel, a 15.3 km long railway through the remote mountains of Siberia. Now, 40 years after the original machine was delivered, Robbins is returning to the role. Two 10.37 m diameter Crossover (XRE) TBMs will bore the second Severomuysky Tunnel, clocking in at 15.5 km long and running through mixed ground and fault zones. The new rail line is needed due to limitations on carrying capacity on the current Baikal-Amur Mainline (BAM) railway through the area. Currently 16 million tonnes of cargo are carried through the existing Severomuysky tunnel but the Russian Government wants to increase cargo carrying capacity by more than six times in the region.
The largest global anthracite producer, Sibanthracite Group, is taking on the tunnel construction with management by VostokCoal Management Company. The companies, owned by Dmitry Bosov, aim to increase coal transport by up to 100 million tonnes per year through the addition of the second tunnel. “Robbins has established itself on the market as the best manufacturer of hard rock machines, which are able to provide the maximum penetration rate in hard rock. This is one of the determining factors in connection with the tight deadlines for the implementation of our project. Also, Robbins is the only manufacturer to build the Crossover TBM,” said a representative of Sibanthracite Group. Other aspects of the supply include a continuous conveyor for muck removal, rolling stock, spare parts, and cutting tools.
