Patent Details

Patent ID: CN201110254384.6

A fully mechanized coal caving mining without coal pillar supporting the roadway expansion method to help fill

Description: A fully mechanized coal caving mining without coal pillar supporting the roadway expansion to help fill method comprising the steps of: A, the gravel and sand mixing station Stir in the ground; B, the stones obtained in step A, sand mix combined materials and cement, fly ash, an additive material shipped to the underground pump station at the reservoir; C, will be fed to the mixer stir the material in step B, get filled with concrete; D, the resulting concrete step C is pumped to fill the mold, With the expansion with the charge, filling quality assurance; after E, formed concrete walls filled with a strong performance early in filling the mold, filling the wall to reach the roof support strength, were stripping; F, washing filling pipe, pump clean water fountain tube test pressure; G, repeat steps AF, until the filling is complete.

Patent Details:

DOI: E21F15 / 02 (2006.01) I; E21D21 / 00 (2006.01) I