Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
EXTRA-THICK COAL SEAM UPPER LAYER OLD GOAF ROOF RECONSTRUCTION METHOD AND CONSTRUCTION METHOD
Disclosed is an extra-thick coal seam upper layer old goaf roof reconstruction method. The method comprises: step 1, providing roadway filling holes (2), wherein the roadway filling holes are provided along a center line of the extension of a roadway (1) with a spacing of 80-100 m therebetween, and the distance between the roadway filling holes and an end of the roadway is not larger than 20 m, and after drilling of the roadway filling holes, the roadway filling holes are filled, and the filling comprises aggregate pouring and grouting; and step 2, providing goaf filling holes, wherein the goaf filling holes are provided at intervals in a row as a unit in a manner in which holes of adjacent rows are staggered with a spacing of 40-60 m between the holes, and a spacing of 20-30 m between rows, and a row of goaf filling holes are filled after being drilled, and the filling comprises aggregate pouring and grouting. Further disclosed is an extra-thick coal seam upper layer old goaf roof reconstruction construction method. According to the extra-thick coal seam upper layer old goaf roof reconstruction method and construction method, hole drilling is conducted on the ground within the range of the roadway and a goaf (3) of an old goaf, and cavities in the roadway and the goaf are filled by means of aggregate pouring and pressurized grouting, such that the dual goals of roof reconstruction and water and gas hidden danger treatment are achieved, thereby providing a safety guarantee for lower layer coal mining.
EXTRA-THICK COAL SEAM UPPER LAYER OLD GOAF ROOF RECONSTRUCTION METHOD AND CONSTRUCTION METHOD
Disclosed is an extra-thick coal seam upper layer old goaf roof reconstruction method. The method comprises: step 1, providing roadway filling holes (2), wherein the roadway filling holes are provided along a center line of the extension of a roadway (1) with a spacing of 80-100 m therebetween, and the distance between the roadway filling holes and an end of the roadway is not larger than 20 m, and after drilling of the roadway filling holes, the roadway filling holes are filled, and the filling comprises aggregate pouring and grouting; and step 2, providing goaf filling holes, wherein the goaf filling holes are provided at intervals in a row as a unit in a manner in which holes of adjacent rows are staggered with a spacing of 40-60 m between the holes, and a spacing of 20-30 m between rows, and a row of goaf filling holes are filled after being drilled, and the filling comprises aggregate pouring and grouting. Further disclosed is an extra-thick coal seam upper layer old goaf roof reconstruction construction method. According to the extra-thick coal seam upper layer old goaf roof reconstruction method and construction method, hole drilling is conducted on the ground within the range of the roadway and a goaf (3) of an old goaf, and cavities in the roadway and the goaf are filled by means of aggregate pouring and pressurized grouting, such that the dual goals of roof reconstruction and water and gas hidden danger treatment are achieved, thereby providing a safety guarantee for lower layer coal mining.
EXTRA-THICK COAL SEAM UPPER LAYER OLD GOAF ROOF RECONSTRUCTION METHOD AND CONSTRUCTION METHOD
ZHENG SHITIAN (Autor:in) / XING MAOLIN (Autor:in) / SHI ZHIYUAN (Autor:in) / JI YADONG (Autor:in) / WANG YUHANG (Autor:in) / CUI SIYUAN (Autor:in) / ZHENG SHUO (Autor:in) / LI KANGKANG (Autor:in)
19.10.2023
Patent
Elektronische Ressource
Englisch
EXTRA-THICK COAL SEAM UPPER LAYER OLD GOAF ROOF RECONSTRUCTION METHOD AND CONSTRUCTION METHOD
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