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Plasma rock fragmentation technology (PAB)

Plasma rock breaking technology (PAB)

Plasma rock fragmentation is a crushing technology that utilizes shock waves generated by plasma. It involves drilling into the target material, such as rock or concrete, and inserting an electrode rod (probe) into the liquid, such as water, filled in the drilled hole. A high-power discharge is performed from this electrode, and the plasma generated at this time expands rapidly, creating a shock wave. This shock wave is transmitted to the surrounding target material, causing fragmentation. 【Features】 ● Low noise and vibration → Minimal impact on nearby structures. ● No scattering → Safety measures such as evacuation are easy to implement. ● Simple principle and structure → Easy to handle in field operations. ● No chemical reactions involved → Does not pollute the surrounding environment. ● For other functions and details, please contact us.

  • Other civil engineering works
  • Rock drills, demolition machines, and excavators

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Tohoku Univ. Technology : Safe, Efficient, and Eco-Friendly Subsurface Rock Fracturing:T25-004

Fracturing with biobased reactive fluid

In the development of subsurface energy infrastructures—such as geothermal power generation, geological storages of carbon dioxide (CCS) and renewable- energy-based hydrogen—it is essential to artificially create highly permeable fractures in rocks at depths of 1,000 to 5,000 meters and temperatures ranging from approximately 30°C to 300°C, in order to secure fluid pathways. In recent years, there has been a growing demand for the development of safer, more efficient, and environmentally friendlier technologies. Conventional hydraulic fracturing is a purely mechanical technique that fractures rock by injecting high-pressure fluid through a wellbore. However, this method faces several technical and environmental limitations, including concerns over induced seismicity from high-pressure injections, and difficulty in maintaining fracture openings and fluid loss especially in moderately permeable rocks. These challenges have highlighted the need for innovative chemical-based approaches—particularly those grounded in green chemistry principles. This invention introduces an innovative fracturing technique that utilizes biobased reactive fluid having high viscosity. This method chemically weakens the rock while forming and propagating fractures at relatively low pressures. Furthermore, by dissolving and roughened the fracture surfaces, the method helps maintain fracture openings and improves permeability over time.

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