A new method of point-pillar paste filling in coal mining

作者：Liu Yuan Xu^*; Guo Guang Li; Zha Jian Feng; Li Yan

来源：Journal of Mining & Safety Engineering, 2009, 26(4): 490-493.

• Coal mining
• Filling in
• Implementation process
• Mining methods
• Mining subsidence
• Pillar
• Resource recovery
• Rock movement
• Step-by-step
• Strip mining
• Surface deformation
• Surface subsidence

We propose a new mining method: point-pillar paste filling based on the combined advantages of room-pillar method and backfilling. The implementation process of this method is expuonded in detail, the feasibility of using this method discussed, the laws of the surface and rock movement and deformation in the process with this are analyzed step-by-step, and the advantages and disadvantages of this method are elaborated. Finally, a case project is simulated with this method. The results show that, if this method is applied, the filling cost will decrease, the filling speed and the rate of resource recovery will increase, the surface deformation will be in I-level. This method is a new way for surface subsidence control.

• 出版日期2009
• 单位中国矿业大学（北京）