A dataset describing chip parameters for rock breaking by chisel pick under deep-sea hydrostatic pressure

Area of Science:

• Geotechnical Engineering
• Marine Mining Technology

Background:

• Rock breaking is fundamental to deep-sea mining operations.
• Understanding the rock breaking mechanism is crucial for efficient resource extraction.
• Existing data on rock chip parameters under deep-sea conditions is limited.

Purpose of the Study:

• To establish a comprehensive dataset of rock chip parameters generated by chisel pick rock breaking under simulated deep-sea hydrostatic pressure.
• To provide essential data for validating numerical simulations and optimizing deep-sea mining equipment.

Main Methods:

• Designed and utilized an experimental setup to simulate deep-sea hydrostatic pressure.
• Conducted rock breaking experiments using chisel picks.
• Collected and analyzed rock chips using sieving, high-resolution imaging, and 3D size measurement.

Main Results:

• Measured key chip parameters including coarseness index (CI), chip size uniformity (n), absolute chip size (d_e), and fractal dimension (D).
• Determined the three-dimensional size (length, intermediate, and short axes) for 3064 chips (>4.75 mm).
• Generated a valuable dataset characterizing rock fragmentation under deep-sea conditions.

Conclusions:

• The generated dataset offers critical insights into the rock breaking process under deep-sea hydrostatic pressure.
• This data will support advancements in deep-sea rock mechanics, cutter design, and mining equipment optimization.
• Facilitates improved numerical modeling and equipment development for marine resource extraction.