Supporting method capable of preventing roof and wall falling accidents

• Main Authors: XU MINGGAO, LU WEI, YAN SHUYUAN, SUN LI, DOU LITONG, WANG MENG, TAO RUI, YANG KE
• Format: Patent
• Language: Chinese; English
• Published: 28.08.2013
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

Provided is a supporting method capable of preventing roof and wall falling accidents. By means of the supporting method, joist steel, metal nets and a hydraulic support are adopted for supporting a broken roof plate of a working surface in an auxiliary mode. When an opening is cut in the working surface, metal nets with certain specifications are overlaid on a section of a cut opening on the whole working surface are fixedly connected onto the section of the cut opening, and certain pitches among the metal nets are connected through iron wires. Afterwards, the hydraulic support is installed in the cut opening, a top beam of the hydraulic support butts against a direct top, so that the connected metal nets can droop in front of the hydraulic support and butts against a coal mine wall through a face guard plate. The joist steel is horizontally bundled on the metal nets before the hydraulic support through iron wires. In coal mining, the face guard plate is drawn back, and the metal nets in front of the hydraul