Coal mine paste filling method mining hydraulic support supporting strength design method

• Main Authors: SUN XIZHEN, JIA CHUANYANG, WANG HAILONG, LIU KEMING, LI WEI, SONG XIAOYUAN, ZHANG GUIBIN, YU XIANBIN
• Format: Patent
• Language: Chinese; English
• Published: 31.12.2019
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS; SHAFTS; TUNNELS

A coal mine paste filling method mining hydraulic support supporting strength design method comprises the following steps: S1, obtaining basic data of a first rock stratum covering a working face according to a coal measure strata comprehensive histogram; S2, calculating the self-weight stress q of a first rock stratum covering the working surface, namely the cracked roof, according to the following formula q = gamma h; S3, constructing a coal wall, hydraulic support and filling body supporting system model of the paste filling method mining working face; S4, calculating the distribution q(x)of the supporting force from the filling body on the key rock mass of the cracked roof; and S5, mining the hydraulic support supporting strength Pc according to the calculated paste filling method. The coal mine paste filling method mining hydraulic support supporting strength design method adopts a simple technical means, simplifies the difficulty in designing the support strength of the hydraulic support mined by the co