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Several common methods for filling mineral paste
Add Time：2025-04-02
The principle of safe coal mining without relocating buildings such as villages is: after being affected by mining, most buildings will undergo minor or minor repairs, and a small number of buildings will meet the requirements for safe use after medium and individual major repairs. The surface deformation caused by mining will be controlled within the following limits, with a horizontal deformation of 2.0mm/m, curvature K<0.2x103m, and inclination of 30mm. Due to different mining conditions such as coal seam thickness, mining depth, overlying rock conditions, and surface layer thickness, it is possible to achieve the goal of
The required mining subsidence coefficient for safe coal mining without relocating buildings such as villages varies, and the requirements for filling hidden bodies of national responsibility materials are also different. Different filling methods can be selected. According to the different filling degree, filling location, and working face layout of the goaf in coal mining face, the waste and filling methods of non relocated village coal mining can be summarized into the following five methods:
）The full mining method adopts paste filling mining in every mining face within the coal pressure range of the village. As the mining face advances forward, before the direct roof collapses, the waste paste material of the Sichuan cemented body fills up all parts of the goaf behind the working face. The full mining and filling method has the best effect on controlling overlying rock and surface deformation, but with a large filling amount, it is generally suitable for layered mining of thick media layers in the lower part of Dingfuzhuang, Sichuan, or for improving the conditions for heavy mining and follow-up in the same country.
2) The short wall national barrier filling method is allowed within the village production pressure and accumulation enclosure. The deep Egyptian working face is arranged as a yellow working face for mining, and after each short mining section, a working face is installed, and then a solid surface material with rubber shoes is used for wall filling, The outer surface of the deep male industrial powder pipe is the butterfly of mining strip | filling industrial pump | industrial filling pump | paste filling industrial pump | paste filling industrial filling pump | mine tailings filling pump | mine tailings filling industrial pump | S-valve piston filling industrial pump | He Yu Heavy Industry | filling industrial pump | industrial filling pump | paste filling industrial pump | paste filling industrial pump | mine tailings filling pump | S-valve piston filling industrial pump | cone valve piston industrial pump | HGBS filling industrial pump | deep cone thickener | efficient mixing bucket | high concentration mixing bucket | tailings filling system | paste filling system | mine tailings filling system | mine Tailings paste filling system | Mine full tailings cemented filling system|
The required mining subsidence coefficient for safe coal mining without relocating buildings such as villages varies, and the requirements for filling hidden bodies of national responsibility materials are also different. Different filling methods can be selected. According to the different filling degree, filling location, and working face layout of the goaf in coal mining face, the waste and filling methods of non relocated village coal mining can be summarized into the following five methods:
）The full mining method adopts paste filling mining in every mining face within the coal pressure range of the village. As the mining face advances forward, before the direct roof collapses, the waste paste material of the Sichuan cemented body fills up all parts of the goaf behind the working face. The full mining and filling method has the best effect on controlling overlying rock and surface deformation, but with a large filling amount, it is generally suitable for layered mining of thick media layers in the lower part of Dingfuzhuang, Sichuan, or for improving the conditions for heavy mining and follow-up in the same country.
2) The short wall national barrier filling method is allowed within the village production pressure and accumulation enclosure. The deep Egyptian working face is arranged as a yellow working face for mining, and after each short mining section, a working face is installed, and then a solid surface material with rubber shoes is used for wall filling, The outer surface of the deep male industrial powder pipe is the butterfly of mining strip | filling industrial pump | industrial filling pump | paste filling industrial pump | paste filling industrial filling pump | mine tailings filling pump | mine tailings filling industrial pump | S-valve piston filling industrial pump | He Yu Heavy Industry | filling industrial pump | industrial filling pump | paste filling industrial pump | paste filling industrial pump | mine tailings filling pump | S-valve piston filling industrial pump | cone valve piston industrial pump | HGBS filling industrial pump | deep cone thickener | efficient mixing bucket | high concentration mixing bucket | tailings filling system | paste filling system | mine tailings filling system | mine Tailings paste filling system | Mine full tailings cemented filling system|