136304 ⎘
Methods or devices for placing filling-up materials in underground workings; Supporting means, e.g. shuttering, for filling-up materials Stowing mats; Goaf wire netting; Partition walls
BULKHEAD FOR FACILITATING BACKFILLING OF A STOPE UPON MINING THEREOF
#2Roadway forming method by expanding excavating and filling gangue paste in thick coal seam
#3Method for mining ultra-thick coal seam by utilizing goaf solid backfilling technique
#4Barricade wall
#5Method for designing supporting parameters of transition support for mixed mining face of filling and fully-mechanized mining
#6Method and an apparatus for creating a void for underground mining
#7Stope fill barrier
#8Mine seal with electrically non-conductive ties