日本地下水開発 List of Products and Services

Be cautious of slip accidents when driving through tunnels in winter. During the winter months, tunnels can be dangerous due to hidden icy patches in the darkness and sudden changes in road conditions at the entrances and exits. In the Nagate Tunnel on the main local road Yonezawa-Takahata in Yamagata Prefecture, 14 traffic accidents occurred within two years after its opening in 2013. Of these, 11 were caused by slips due to road surface freezing. In response, in 2015, a freezing prevention solution automatic spraying device called "Tokebo" was installed. This dramatically improved road conditions and achieved zero accidents caused by freezing slips. **Features of the freezing prevention solution automatic spraying device "Tokebo":** - Compact one-box type weighing 250 kg - Can be moved and installed as needed at necessary times and locations - Operates on solar panels and batteries, eliminating the need for commercial power - Fully automatic operation using snowfall and temperature sensors and a timer - Compatible with various freezing prevention solutions It is also active at traffic hubs across the country, not just in tunnels!

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At the 27th Conference of the Parties to the United Nations Framework Convention on Climate Change (COP27) held in November 2022, countries around the world reaffirmed their commitment to "limit the increase in the global average temperature to 1.5°C above pre-industrial levels." We must achieve net-zero CO2 emissions by 2050. Japan Groundwater Development (JGD) has successfully implemented a groundwater heat energy utilization system that uses the 15°C thermal energy of groundwater for a non-water-spraying snow melting system, contributing to the realization of carbon neutrality by 2050. In 2021, through the development of high-efficiency groundwater thermal storage, we completed a 100% net-zero energy building (ZEB), which was previously considered difficult to achieve in snowy cold regions. Achieving the "1.5°C promise" is not easy, but there is no doubt that the 15°C thermal energy available to us is one of the key elements in fulfilling this promise. JGD will continue to pursue the potential of groundwater. *We plan to exhibit at the NEW Environmental Exhibition to be held at Tokyo Big Sight from May 24 to May 26. Please download detailed materials and various product services utilizing groundwater from the link below.*

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Achieving carbon neutrality by 2050 requires the widespread adoption of ZEB (Zero Energy Buildings). Japan Groundwater Development aims to promote ZEB in snowy and cold regions with our high-efficiency aquifer thermal energy storage system, launching the ZEB project in 2019. The demonstration facility was completed in February 2021. The demonstration facility employs a "total thermal supply system using high-efficiency aquifer thermal energy storage" that utilizes the thermal energy of groundwater for heating, cooling, hot water supply, and snow melting in winter. This high-efficiency aquifer thermal energy storage enables even more efficient system operation compared to conventional open-loop groundwater systems. The effect of storing cold energy in winter is particularly significant, allowing for free cooling in summer without operating heat pumps, greatly reducing summer electricity consumption. Snowy and cold regions face challenges with solar power generation during winter, making it difficult to achieve ZEB. However, the significant reduction in energy consumption allows the demonstration facility to realize ZEB. Japan Groundwater Development registered as a ZEB planner in 2021. As a leading company in geothermal and groundwater thermal energy, we are here to assist everyone aiming for ZEB.

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Our company is involved in the design, construction, and maintenance of the "Snow Melting System," which is effective for melting snow on roads, parking lots, and other areas in snowy and cold regions. We can accommodate various heat sources and propose the most suitable system for the planned site. We are currently offering materials that include our system lineup. (You can view them immediately from the download.) [Contents Included] ■ Non-Water Spraying Snow Melting - Groundwater Recovery System - Groundwater Heat Utilization Heat Pump System - Tunnel Spring Water Utilization System - Ground Heat Utilization System - Ground Heat Utilization Heat Pump System - Seawater Heat Utilization Heat Pump System - Air Heat Utilization Heat Pump System - Hot Water Boiler System - Hot Spring Heat Utilization System - Waste Heat Utilization System ■ Water Spraying Snow Melting - Water Spraying Snow Melting System - Combined Non-Water Spraying and Water Spraying System

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We have been working for many years on the effective use of groundwater, and this is the technology we have developed to create a more efficient heating and cooling system. In 2021, we advanced our project after being selected for NEDO's "Cost Reduction Technology Development for Renewable Energy Thermal Utilization," and we completed a 100% 'ZEB'. Groundwater has a constant temperature throughout the year, being cooler in summer and warmer in winter compared to the outside air. We effectively utilize the heat from groundwater for summer cooling and winter heating. By storing the thermal energy released during cooling and the cold energy released during heating in the groundwater for use in the next season's air conditioning, we create a highly efficient system. Furthermore, we enhance the thermal energy on the surface before returning it underground, thereby increasing efficiency. This is high-efficiency aquifer thermal storage. In the total thermal supply system using the high-efficiency aquifer thermal storage system, we address all thermal demands within buildings, including heating, cooling, hot water supply, and snow melting facilities, using groundwater heat. In 2021, JGD became the first company in Yamagata Prefecture to be registered as a ZEB planner. As a leading company in groundwater heat and geothermal heat, we are here to assist everyone aiming for ZEB transformation.

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The "High Efficiency Aquifer Thermal Energy Storage Heating and Cooling System" achieves high efficiency in heating and cooling by using cold groundwater, which stores winter's chill, for summer cooling, and warm groundwater, which stores summer's heat, for winter heating. By combining it with solar collectors and non-water-spraying snow melting facilities, the amount of stored heat is significantly enhanced. It has been established as a high-efficiency system that can utilize groundwater in more advantageous temperature ranges. In the fiscal year 2020, it received both the "Minister of the Environment Award for Climate Change Action" and the "Minister of Economy, Trade and Industry Award for New Energy Grand Prize." [Features] - Utilizes cooling waste heat (thermal energy) as a heating source and heating waste heat (cooling energy) as a cooling source. - Contributes to reducing summer road surface temperatures by burying pipes in parking spaces. - There are examples of reducing monthly CO2 emissions by over 60%. *For more details, please refer to the materials. Feel free to contact us with any inquiries.

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Pig cleaning of heat exchange pipes is a maintenance method for non-water-spraying snow melting systems. By passing a pig through the inside of the heat exchange pipe, scale that has adhered to the interior is expelled. Regular implementation prevents clogging of the piping. <Benefits> 1. The snow melting effect is restored! With pig cleaning, the snow melting effect from the initial installation continues. Furthermore, it extends the lifespan of aging existing pipes and improves durability. 2. Lifecycle costs are reduced! When pipes become clogged, it puts a load on the pump, shortening its lifespan. By rehabilitating the pipes, lifecycle cost reduction can be achieved. 3. No large-scale construction is necessary! There is no need for pavement removal or large-scale excavation work. JGD's pig cleaning allows for easy cleaning of the inside of the pipes. Additionally, the workspace required is compact. For more details, please download the PDF or feel free to contact us.

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The groundwater reduction system is a system that uses the thermal energy of groundwater drawn from pumping wells to raise the surface temperature, facilitating snow melting and preventing freezing. Heat exchange pipes are embedded within the pavement, and groundwater is sent through these pipes to transfer thermal energy to the surface, enabling snow melting and preventing freezing. The groundwater after heat exchange is returned underground through injection wells, so issues such as groundwater depletion or abnormal drops in groundwater levels leading to ground subsidence do not occur. Since there is no spraying of water on the surface, travel and walking during snowfall are extremely comfortable. 【Environmental Aspect】 - It effectively utilizes groundwater heat, a renewable energy source, and since the groundwater after thermal use is returned underground through injection wells, issues such as groundwater depletion or abnormal drops in groundwater levels leading to ground subsidence do not occur. 【Space Saving】 - The only equipment installed above ground is the control panel and snow detection sensors, making it space-efficient. 【Low Operating Costs】 - The only requirement during operation is the power for the pump that draws groundwater, making it very economical.

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The "Aquifer Thermal Energy Storage (ATES) Heating and Cooling System (Operational in Summer and Winter)" effectively utilizes renewable energy, allowing for comfortable living even in the peak of summer and winter. It contributes to reducing CO2 emissions and has a heat island suppression effect. By combining it with a non-water snow melting system, even higher efficiency can be expected. 【Features】 ■ Aquifer Thermal Energy Storage (ATES) ■ Effective use of renewable energy ■ Reduction of CO2 emissions ■ Heat island suppression effect ■ Comfortable even in peak summer and winter *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

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The automatic spreading device for freeze prevention solution, "Tokebo," uses a nozzle spraying method powered by a pump system with solar panels and batteries to distribute freeze prevention solution, ensuring a comfortable and safe passage during winter. It is a compact one-box type weighing 250 kg, allowing for mobility and installation at necessary times and locations. It operates on solar panels and batteries, eliminating the need for commercial power sources. 【Features】 - Fully automatic operation with snow and temperature sensors and a timer - Compatible with various freeze prevention solutions, including chloride and acetate types - Installable in any location, such as tunnels, slopes, and sharp curves *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

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"Josane" is an economical, household snow melting system that utilizes groundwater and is considerate of the global environment. From well drilling to completion, it can be done in a short period of time. The construction period is about two weeks. The snow melting system has a track record of over 1.7 million square meters, from Hokkaido to the San'in region. It eliminates the need for shoveling snow, making it perfect for elderly households. [Features] ■ Considerate of the natural environment ■ Utilizes groundwater ■ Low maintenance costs *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

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The sonic drill is a drilling method that applies special vibrations and rotation to the bit tip, enabling much faster drilling than conventional rotary methods. Continuous sampling is possible with the newly developed wireline sampler (TS118). It allows for high-speed drilling and dramatically shortens construction time (a 100m deep well can be completed in as little as 3 days). It is ideal for applications such as small-diameter well drilling for general households, borehole drilling for geothermal heat extraction, and small-diameter well drilling for agricultural use. 【Features】 - Capable of handling all types of strata due to the special vibration mechanism - Noise-reducing machine, making it suitable for urban construction - Clean water drilling is possible in most strata - Dry drilling is also possible depending on the strata For more details, please contact us or download the catalog.

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Japan Groundwater Development Co., Ltd. is engaged in research and development with a constant focus on coexisting with nature, including the development of a non-water snow melting system that uses only the natural energy of groundwater to eliminate snow and prevent freezing, the development of hot spring sources as part of regional energy development, the development of artificial groundwater recharge systems to reinforce depleting water resources, and environmental improvement projects to remediate soil contamination. 【Business Activities】 ○ Snow Prevention Business ○ Resource Development Business ○ Environmental Energy Business For more details, please contact us or download the catalog.

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Sonic drilling is a method of excavation that applies rotation and vibration to the tip of the bit, enabling much faster drilling than traditional rotary methods. ◆Features◆ ◇ The special vibration technique allows for adaptation to all types of strata and enables high-speed drilling. ◇ It improves the noise issues that were challenges in the rotary percussion method. ◇ Clean water drilling is possible in most strata. ◇ Dry drilling is possible depending on the strata. ◇ Continuous core sampling is possible.

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The ECOPROBE EP-26 is a drilling machine that uses a rotating and vibrating method mounted on a crawler. By combining a vibrator and an air damper, it enables the collection of high-quality analytical samples from various soil types. ◆ Features ◆ ◇ It is a 26-horsepower crawler-mounted type that allows for quick movement and installation. ◇ The combination of rotation and vibration in the drilling method allows for relatively quiet operation and sample collection with minimal core shrinkage. ◇ As it performs dry drilling, it enables accurate assessment of soil and groundwater contamination without spreading pollution. ◇ The core is collected in a nearly undisturbed state in a sleeve (vinyl tube). ◇ The core tube has a diameter of Φ86mm, allowing for the collection of a large volume of samples. ◇ It is also possible to install observation wells.

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The GEOPROBE 66DT is a percussion drilling machine mounted on a crawler. It is suitable for soil sampling in various soil types and enables the rapid and low-cost installation of observation wells and remediation wells. ◆ Features ◆ ◇ Being crawler-mounted allows for quick movement and installation. ◇ The drilling speed is significantly faster, enabling efficient results in a short time. ◇ In addition to percussion drilling, rotary drilling and auger drilling are also possible. ◇ As it performs dry drilling, it does not expand contamination, allowing for accurate assessment of soil and groundwater contamination. ◇ It can operate in relatively narrow spaces, such as inside factory buildings. ◇ Cores are collected in a nearly undisturbed state within the liner tube. ◇ Soil gas and groundwater sampling can be conducted quickly, and observation wells and remediation wells can also be installed.

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