ジェイテック List of Products and Services

The "COMPASS method" is a construction technique developed to safely and quickly build small cross-sectional structures. 【Construction Features】 By inserting protective steel plates into the ground in advance, excavation occurs within the area enclosed by the protective steel plates, which reduces the risk of collapse and allows for safe construction. *For more details, please download the PDF or contact us.

• Tunnel construction
• Paving of sidewalks, roads, parking lots and stadiums

The drilling machine (Compact Reverse JET18・C-JET18) used for the super low headroom cast-in-place pile method (Supercompact Reverse Circulation Drilling Machine) is the smallest among this type of drilling machines. In foundation pile construction on train station platforms, the work space is limited to nighttime, leading to time constraints that prolong the construction period and increase costs. Additionally, when construction machinery is left on the platform, temporary enclosures for the machinery are required outside of working hours, which obstructs passenger traffic. To address these issues, we developed a super compact reverse circulation drilling machine that can perform foundation pile construction in low headroom and narrow spaces, such as beneath platforms, by miniaturizing the pile construction machinery. This drilling machine can accommodate extremely narrow spaces and can drill large diameters (3.0m). *For more details, please download the PDF or contact us.*

• Pile and foundation work
• Ground foundation construction method
• Foundation construction machinery

The "HEP & JES method" is a non-excavation underpass construction method that allows for simultaneous execution of pavement protection work and main structure construction. Currently, there are over 130 construction achievements. <Construction Features> Due to continuous pulling towards a fixed position on the arrival side, the construction accuracy of element excavation is high, ensuring sufficient construction speed. Additionally, by selecting the appropriate excavation machine, it can adapt to various soil types. <Structural Features> Since the JES element serves as both the pavement protection work and the main structure, there is no need for separate installation of protective work, simplifying the process and minimizing the impact on the pavement. *For more details, please download the PDF or contact us.

• Civil Engineering Method
• Tunnel construction
• Bridge Construction

Eco Recharge (circular groundwater level control method) is a technique aimed at preventing the decline of groundwater levels by efficiently recharging aquifers. This is achieved by pumping groundwater from extraction wells and pressurizing it to inject into the ground through injection wells. Groundwater extracted from wells such as deep wells is sent to a sand separator, where impurities like sand contained in the water are removed. The treated water is then sent to a receiving tank, and through a system that integrates measurement and control, it is recharged into the ground via injection wells to control the groundwater level.

• Water Supply Facilities
• Civil Engineering Method

The "CWF method" is a technique that does not use a single drop of water, developed with unique know-how for cooling technologies for wire saws, core bits, and blades as alternatives to water. Since it does not use any water, there is no generation of muddy water, and the absence of water eliminates slipping, making it less likely to cause misalignment of the cutting line. Even materials with uneven hardness, such as steel frames and reinforced concrete, can be cut and drilled with high precision. Dust is absorbed by a dust collector, allowing for work close to rivers and railway lines.

• Renovation and repair methods
• Reinforced concrete construction
• Road construction

The "Electric Discharge Fragmentation Method" is a technology that generates shock waves similar to explosives using electrical power, allowing for the efficient fragmentation of rock formations and concrete. It can break down hard and solid rock and concrete safely and quickly with minimal power consumption. Additionally, it produces low noise, making it suitable for construction in urban areas and indoors. The electric discharge shock generation device can be mounted on a one-box vehicle, offering excellent potential and transportability, and can be used in confined spaces. 【Features】 ■ Fragmentation method that does not use explosives ■ Control over fragmentation force, noise, and vibration ■ Usable in narrow sites and indoors *For more details, please download the PDF or contact us.

• Special Construction Method