福島地下開発 List of Products and Services

"Geothermal drilling work" refers to the excavation of boreholes for heat extraction wells with a diameter of approximately φ179mm and a depth of around 100m. This involves inserting a ground heat exchanger (a single tube or WU tube made of high-density polyethylene material with a nominal diameter of 25-30A) into the borehole, and filling the space between the borehole wall and the U-tube with silica sand to construct the ground heat exchanger. It is primarily utilized for road heating systems that aid in snow melting and for heating and cooling systems in buildings. As of this fiscal year, the total number of completed geothermal drilling projects at a depth of around 100m has exceeded 120, with construction machinery and drilling methods suitable for the geological conditions proposed based on the extensive geological data accumulated since the company's establishment. When planning, designing, considering, or executing geothermal utilization, please feel free to consult or request our services. *For more details, please refer to the PDF document or feel free to contact us.

• Other woodworking
• Other civil engineering works
• Other earthworks, foundation works, and exterior floors

The "Fukushima Probe (FP-4M)" is a geothermal drilling machine specifically designed for general residential use that can be operated in small and narrow spaces. It is capable of drilling even in hard geological layers at the construction site. It flexibly accommodates the wide area of the prefecture. Additionally, when utilizing geothermal energy, efficient drilling methods can be selected, contributing to the reduction of initial costs. 【Expected Effects】 ■ The machine is compact and can be operated in narrow spaces. ■ It can drill even in hard geological layers at the construction site. ■ Contributes to the reduction of initial costs. ■ Promotes the restoration and advancement of geothermal systems in Fukushima Prefecture. ■ Creates employment in the geological survey and drilling industries within Fukushima Prefecture. *For more details, please refer to the PDF materials or feel free to contact us.

• Site and ground investigation

Fukushima Underground Development Co., Ltd. is developing a construction method for borehole heat exchangers called "Deep Well Borehole," which effectively utilizes the groundwater advection effect. This technology seed enables a reduction in working time and construction costs for heat exchange wells using the DTH (Down The Hole Hammer) drilling method. Additionally, it achieves a reduction of 30-40% in the number of wells required compared to conventional heat exchange wells. 【Features】 ■ Reduction in working time for heat exchange wells ■ Possible reduction in construction costs ■ Installation of heat exchangers simultaneously with drilling ■ Achieves a reduction of 30-40% in the number of wells required *For more details, please refer to the catalog or feel free to contact us.

• Environmental Survey
• Geological Survey