Method of filling abandoned mineshaft and concurrently mineralizing and sequestering co2 using solid waste slurries

Abstract

Provided is a method of filling an abandoned mineshaft and concurrently mineralizing and sequestering CO2 using solid waste slurries. The method includes: S1, pouring and spraying a solid waste-based plugging slurry to inner walls and a bottom of the abandoned mineshaft, and curing to form a plugging layer; S2, grouting a solid waste-based CO2 foam slurry into the abandoned mineshaft, and curing to form a porous stone body with CO2-filled pores, wherein the porous stone body with CO2-filled pores; and S3, grouting a solid waste-based micro-expansion slurry into a top portion of the abandoned mineshaft, and curing to form a closed protective shell.

Dependencies are inferred from the claim text.