Geo-technical data for River Crossings: River crossings require additional information such as a study to identify river bed, river bed depth, stability (lateral as well as scour), and river width. Although these are good general rules, the number, depth and location of boreholes is best determined by the geo-tech engineer. A thumb rule is to take borings at least 10m to either side of bore path. The borings should be near the drill-path to give accurate soil data, but sufficiently far from the borehole to avoid pressurized mud from following natural ground fissures and rupturing to the ground surface through the soil-test bore hole. crossings which are less than 300 m length, as few as three bore log may be sufficient. For long crossings, bore logs are typically taken at 200 m intervals. Geo-tech investigation is performed by analyzing the soil sample extracted from bore-holes drilled along the pipeline route called as bore log data. recent nearby bridge constructions, other pipeline/ cable crossings in the area.) (Supplementary geo-technical data may be obtained from existing records, e.g. Soil strength and stability characteristics.Soil identification to locate rock, rock inclusions, gravelly soils, loose deposits, discontinuities and hardpan.On the geo-tech information governs the determination of best crossing route along with selection of drilling tools and execution methodology.įollowing shall be investigated during the geo-tech survey: The purpose of the geo-tech investigation is not only to determine the feasibility of HDD crossing, but also to establish the most efficient way to accomplish it. Soils with cobble stones or rock having voids or incomplete layers of rock are not considered suitable for drilling. Selection of drilling head is dependent on the type of soil strata. The intent is to bring the products to those markets within the next 24-36 months.Different types of drilling heads/ tools are used in the pilot-hole process. The company also plans to offer additional fluid systems in the first year to establish a range of reclaimers ranging from 750 to 3,000 liters per minute of cleaning capacity.Īs the products get established in Europe, the company will look to introduce them in key global markets where electric systems are desired, including North America and Australia. That will likely include a system built around a 120-metric ton HDD rig, a 2,500-liter reclaimer and high-pressure pump. Vermeer expects that its first rigs and fluid systems will be in production and ready for distribution in Europe by late 2021. Products will be sold under the Vermeer brand in partnership with Vermeer dealers.Īll product development, engineering, marketing and production for the technology will immediately move to the Vermeer EMEA headquarters in Goes, Netherlands. Because they are European-market ready and tested, Vermeer will focus first on introducing the products to the European customer base to support large-diameter underground infrastructure projects. Drill rig and fluid packages have been piloted with customers across Europe for the last several years. It was purpose-built to help companies comply with European transportation and worksite regulations and meet their goals to lower their environmental and worksite impacts. The Normag HDD system technology has been in development for more than eight years in the Netherlands. “This investment critically supports our innovation and product development focus to continually help customers optimize their worksite efficiency, while limiting environmental impact.” “With this technology already proven in operations across Europe, our Vermeer team can now fast-track an electric HDD offering that helps operators better control their cost of operations and worksite impacts through reduced fuel use, near-zero emissions, limited noise and an overall smaller rig footprint,” said Vermeer President and CEO Jason Andringa. All systems have also been designed to match standard international shipping container dimensions to reduce the machine footprint, jobsite set-up time, complexity and cost. When connected to the electric grid, the system can operate as a fuel-free system. The Normag electric HDD technology offers an integrated electric power system that optimizes efficiency across the generator set, drill rig and fluid management systems during operations. Through this acquisition, Vermeer assumes the rights to develop, manufacture and distribute the fully electric HDD rigs, generator sets and fluid management systems, which are currently operating across Europe under the Normag brand. acquired electric-powered horizontal directional drilling (HDD) and fluid systems technology from Normag.
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