Self-stabilizing integrally-molded pillar filling structure for underground mines

Abstract

A self-stabilizing integrally-molded pillar filling structure for underground mines is provided, belonging to the field of supporting structures, which includes an airbag, and the airbag is provided with a feed filling port and a gas inflation port; a telescopic bearing piece, and the telescopic bearing piece is fixedly provided on an inner surface of the airbag and is capable of expanding and contracting with volume change of an inner cavity of the airbag; and steel hoops, and the steel hoops are fixedly provided on an outer surface of the airbag.

What is claimed is: 
     
         1 . A self-stabilizing integrally-molded pillar filling structure for underground mines, comprising:
 an airbag, wherein the airbag is provided with a feed filling port and a gas inflation port;   a telescopic bearing piece, wherein the telescopic bearing piece is fixedly provided on an inner surface of the airbag and is capable of expanding and contracting with volume change of an inner cavity of the airbag; and   steel hoops, wherein the steel hoops are fixedly provided on an outer surface of the airbag.   
     
     
         2 . The self-stabilizing integrally-molded pillar filling structure for the underground mines according to  claim 1 , wherein the telescopic bearing piece comprises a plurality of inner layer strips and a plurality of outer layer strips, and the inner layer strips and the outer layer strips are hinged in pairs to form a telescopic rhombic net structure. 
     
     
         3 . The self-stabilizing integrally-molded pillar filling structure for the underground mines according to  claim 2 , wherein each of the inner layer strips and the outer layer strips is integrally molded by pressing carbon fiber and graphite fiber at a ratio of 2:1. 
     
     
         4 . The self-stabilizing integrally-molded pillar filling structure for the underground mines according to  claim 3 , wherein a width of each of the inner layer strips and the outer layer strips is 50 mm. 
     
     
         5 . The self-stabilizing integrally-molded pillar filling structure for the underground mines according to  claim 2 , wherein the inner layer strips and the outer layer strips are hinged by hot-dip galvanized steel pipes. 
     
     
         6 . The self-stabilizing integrally-molded pillar filling structure for the underground mines according to  claim 2 , wherein a bottom of the airbag is provided with a sliding rail, and lowermost ones of the inner layer strips and/or outer layer strips are slidably connected with the sliding rail.