Birth of a multi-driver compatible with hard rock formations! High-speed drilling with a hydraulic casing pipe drilling device!
The "Screw Driver Method" can accommodate a wide range of drilling diameters from φ800 to 3200mm. While performing casing drilling with a fully rotating all-casing drilling machine known for its drilling capabilities, it utilizes a screw-type middle drilling device to intermittently discharge large volumes of soil in an earth drill manner, achieving simultaneous improvements in speed, quietness, and environmental performance. This is a new standard that consolidates the features of conventional methods. 【Features of the Screw Driver Method for Hard Ground】 ■ Screw type ■ The storage capacity of excavated soil is approximately 8 to 25 times that of a hammer grab, significantly reducing the number of discharges ■ The discharge efficiency improves compared to a hammer grab in proportion to depth ■ Reliable shear excavation is possible for general earth, consolidated clay layers, gravel layers, sand and gravel layers, soft rock layers, etc. ■ It can be used not only for casing rotary drilling methods but also as a middle drilling device for pipes such as steel pipes and steel sheet piles. *For more details, please refer to the PDF materials or feel free to contact us.
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basic information
【Multi-Driver Method for Hard Rock Features】 ■ Cluster Type ■ Efficient excavation of large boulders, cobbles, and hard rock embedded in interbedded ground ■ The device can be suspended at any excavation depth relative to the applicable casing, minimizing setup changes ■ The middle excavation device takes reaction force close to the excavation target area and advances autonomously through its crushing force, enabling reliable excavation of hard rock layers ■ Capable of producing high-quality piles in challenging sites where conventional casing excavation is difficult, such as hard cobbles, rock layers, and sloped rock layers *For more details, please refer to the PDF document or feel free to contact us.
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Applications/Examples of results
【Applicable Work Types】 ■ Cast-in-place pile work, restraining pile work, steel pipe pile work, column row pile work, replacement excavation work *For more details, please refer to the PDF document or feel free to contact us.
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Company information
Yokoyama Foundation Construction Co., Ltd. is a company located in Sayogun, Hyogo Prefecture, primarily engaged in civil engineering, scaffolding and earthwork, and paving construction. For rapid construction of heavy temporary works that support the foundation of construction sites and foundation works that support structures, please leave it to Yokoyama Foundation Construction Co., Ltd.
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