Regional rock stratum movement and surface subsidence control method for deep mining of ultra-thick weakly-cemented overlying strata

• Main Authors: GUO KAIKAI, WANG TIENING, ZHANG GUOJIAN, GUO GUANGLI
• Format: Patent
• Language: Chinese; English
• Published: 01.01.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; EARTH DRILLING; ELECTRIC DIGITAL DATA PROCESSING; FIXED CONSTRUCTIONS; MINING; MINING OR QUARRYING; PHYSICS; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS

The invention discloses a regional rock stratum movement and surface subsidence control method for deep mining of ultra-thick weakly-cemented overlying strata. The regional rock stratum movement and surface subsidence control method comprises the following steps: S1, an energy accumulation evolution rule in surface subsidence and rock stratum movement of deep mining of the ultra-thick weakly-cemented overlying strata is analyzed; and S2, according to the analysis result in the step S1, a coordinated mining mode based on partial caving mining and partial filling mining of a main key layer is established, a collaborative deformation dual-control system composed of a composite supporting body and a main key layer is formed, and step-by-step control over movement of the overlying strata is achieved. The main key layer comprises a main key layer body and a sub-key layer body, a sub-key layer structure blocks the overlying strata damage height and greatly reduces upward transmission of an effective space, and the m