ヤスダエンジニアリング List of Products and Services

The "Success Small Method" is a construction technique that leverages the advantages of traditional mud slurry and earth pressure pushing methods (long distance, gravel compatibility, sharp curves, space-saving yards, etc.) while improving issues related to resource and work environments, and simultaneously pursuing a reduction in total costs. Traditionally, all the mud generated from excavation was disposed of off-site, but from an environmental perspective, we have developed a continuous soil classification device with a shower function (Master R) as a method to minimize the absolute amount discharged off-site. With various face plate adaptations, it can also handle large gravel, boulders, and bedrock. It has high torque, allowing for primary crushing with the face plate and secondary crushing with a cone crusher, enabling continuous soil discharge. 【Features】 ■ Long distance, gravel compatibility, sharp curves, space-saving yards ■ Improvement of resource and work environment issues ■ Continuous soil classification device with shower function to reduce off-site mud discharge ■ Total cost reduction *For more details, please feel free to contact us.

• Drilling Machine
• Civil Engineering Company
• Sewerage facilities

The "Cobra Method" is a revolutionary small-diameter thrusting method that can be used to construct from ordinary soil to boulders and bedrock using a small shaft. The unique joint pipes within the Cobra thrusting pipe prevent rolling and respond to unexpected ground conditions that could pull the tunneling machine out, allowing for high-precision construction. Furthermore, even in challenging ground conditions, it is possible to achieve thrusting distances of approximately 200 meters. Additionally, all components, including a compact mud-water treatment system that can be mounted on vehicles and a disassemblable main body, are designed to be small and space-saving, allowing for retrieval from manholes. 【Features】 ■ High torque performance with a wide range of soil adaptability ■ Realization of smaller shafts ■ Improved convenience for retrieval with a four-part tunneling machine ■ Capable of thrusting approximately 200 meters in harsh ground conditions (with applicable conditions) ■ Ability to select excavation methods according to soil type *For more details, please feel free to contact us.

• Drilling Machine
• Civil Engineering Company
• Sewerage facilities

The "SS Small Method" is a construction technique that reduces the external resistance value of pipes by filling and pressurizing the tail void with high-concentration mud water, enabling long-distance and sharp curve thrusting. Due to the favorable pressure balance provided by the high-concentration mud water, the impact on the ground is extremely low compared to other methods, allowing it to accommodate a wide range of soil types from soft ground to cobble layers. The thrusting equipment is compact, making it possible to work in narrow temporary yards, and it does not require auxiliary methods other than for launching and arrival, resulting in high economic efficiency. 【Features】 ■ Achieves long-distance and sharp curve thrusting ■ Accommodates a wide range of soil types from soft ground to cobble layers ■ Fluid is transported and discharged from inside the machine to outside using a vacuum suction device ■ Compact thrusting equipment allows for construction in narrow temporary yards ■ Systematizes the process from excavation to solidification treatment *For more details, please feel free to contact us.

• Drilling Machine
• Civil Engineering Company
• Sewerage facilities

The "JAT Method" is a thrusting method that enables long-distance and sharp curve construction in small-diameter thrusting. Instead of measurements from the ground, it uses a CCD camera sensor for underground surveying from the starting pile, which means it is not affected by buried objects, electric wires, or tracks. The method for curve measurement involves inserting multiple CCD camera sensors into the pipe and measuring targets located at the front and back of the machine with the CCD camera sensors. The image information sent from the sensors is processed by a PC on the ground to quickly calculate the discrepancies between the plan and the construction. [Features] ■ Compatible with deep thrusting ■ Simple structure and easy handling ■ Three-dimensional traverse surveying using high-resolution CCD camera sensors ■ Roll conveyor rail (patented) ■ Capable of handling a wide range of soil types *For more details, please refer to the PDF or feel free to contact us.

• Sewerage facilities
• Waste treatment facilities
• Site and ground investigation

The "Milling Mall Method" is a thrusting method composed of three devices: a "boring machine," a "special telescopic pipe," and a "special injection pipe." The boring machine is equipped with a specialized bit for cutting through obstacles and a transmitting/receiving coil for obstacle detection. If an obstacle is present during the excavation thrust, the boring machine cutter is pressed against the obstacle at ultra-low speed by the special telescopic pipe, and cutting is performed by the rotation of the cutter. Additionally, the special injection pipe is equipped with facilities for ground improvement before and after the obstacle, as well as an "electromagnetic wave guidance system" to accurately guide the boring machine to its destination. **[Four Special Functions]** - **Detection:** Detecting metal obstacles in front while thrusting and excavating. - **Improvement:** Ground improvement from within the boring machine before and after the obstacle. - **Cutting:** Crushing and discharging metal obstacles. - **Guidance:** Guiding the boring machine to the designated position. For more details, please refer to the catalog or feel free to contact us.

• Site and ground investigation

The "Apache Method" is a construction technique unique to the mud slurry tunneling method that enables long-distance and curved tunneling, as well as the launching and retrieval of tunneling machines from small shafts and existing manholes. When retrieving from existing manholes, the tunneling machine can be removed through an opening of φ600mm without the need to demolish the upper manhole cover or sloped walls. This method incorporates new technology while maintaining the excellent characteristics of the conventional mud slurry tunneling method, achieving a more economical tunneling construction. 【Features】 [Standard Mud Slurry Tunneling Machine "Apache Method Type-0"] ○ A type that can be used within the range applicable to conventional mud slurry tunneling methods. [Large Gravel Compatible Tunneling Machine "Apache Method Type-I"] ○ Fully compatible with gravel and cobbles of 100% nominal diameter that could not be constructed with conventional methods. [Disassembly Retrieval Tunneling Machine "Apache Method Type-II"] ○ Tunneling machines with a nominal diameter of 800 to 1000mm can be launched in segments from small shafts. For more details, please contact us or download the catalog.

• Manhole body
• Drilling Machine
• Civil Engineering Company