Construction Technology of Roof Falling Section in Karst Cave of Mine Air Returning Inclined Shaft
LIU Jin-sheng
Abstract：In a construction of a roof falling section in a karst caving of the Mine Air Returning Shaft of Tiancheng Mine ,a grouting operation was firstly applied to backfill and reinforce the falling area in or-der to form an artificial roof.Following the grouting operation ,the advance grouting pipe shed+No.11 mine H type steel support +local bolts+double steel meshes +shotcreting were applied as the initial support of the mine inclined shaft for the arch roof and the sidewalls.A reinforced concrete was lined as the secondary support of the mine inclined shaft.With the sectional construction ,the mine inclined shaft was safety and successfully passed through the falling section.The practices showed that the grouting backfill and reinforcement and the advance pipe shed support could be a quite safety and reli-able construction technology to treat the large falling area of the karst cave .
Keywords：mine inclined shaftroof falling section of karst caveadvance grouting and pipe shedH type steel supportartificial roof
Publication Date：2014-02-22
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 10-13 )