▎ 摘　　要

NOVELTY - Graphene/basalt composite material comprises 0.3-100nanometers thick graphene and basalt fiber of 0.2-100micrometers diameter and 0.5micrometers to 1000 cm length. USE - Graphene/basalt composite material. ADVANTAGE - The mechanical strength of graphene/basalt composite material is increased from initial value 5% to final 100%. The tensile strength of graphene/basalt composite material is 0.5-10Gigapascals. The tensile strength of graphene/basalt composite material is conductivity is 0.001-50Siemens/cm. The graphene/basalt composite material shows hydrophobic effect at 90-150 degrees C. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene/basalt composite material, which involves: (A) taking basalt fiber as substrate; and (B) heating the substrate at 300-1000 degrees C, and then introducing carbon source, hydrogen and argon gas to the heated substrate to obtain the desired product.