Temporary protection support for downhole tunneling working face, and construction method of temporary protection support

• Main Authors: FAN XINTING, LU ZHONGLIANG, SONG LEI, MAO HONGXIONG, GUO SHUNLIANG, SHEN XIANG, GUO LIRU, DU JIANGTAO, CHENG FUMING, GUO SHUAI, ZHOU YAN, LI CONGPAN, ZHAO WENYONG, WANG ZHEN, CAO XIULONG, HAN XIAOMING
• Format: Patent
• Language: Chinese; English
• Published: 10.09.2019
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

The invention discloses a temporary protection support for a downhole tunneling working face, and a construction method of the temporary protection support. The temporary protection support comprisesa temporary support top frame structure, a horizontal hydraulic device and a vertical hydraulic device; the temporary support top frame structure comprises a plurality of stages of temporary support sets which are laid out in a stacked mode in the tunneling direction; each temporary support set comprises a front longitudinal beam and a rear longitudinal beam, and the vertical hydraulic device is correspondingly arranged below the front longitudinal beams and the rear longitudinal beams and correspondingly controls the front longitudinal beams and the rear longitudinal beams to ascend and descend in the vertical direction; the front end of the temporary support top frame structure is further provided with a front canopy, the lower part of the front canopy is provided with a telescopic hydraulic column in a connecte