Study on the Mechanical Properties of Fly-Ash-Based Light-Weighted Porous Geopolymer and Its Utilization in Roof-Adaptive End Filling Technology

This paper aims to study the porous structure and mechanical properties of fly-ash-based light-weighted geopolymer (FBLPG), exploring feasibility using it in roof-adaptive end filling technology based on its in-situ foaming characteristics plastic yielding performance. A model FBLPG during both slurry solid period was established their influence factor. In addition, this also built a planar shape honeycomb with bore walls, proving that walls possess isotropic force. shows peculiar performance experiment where stress stays stable gradual increase deformation, which can guarantee stability body under cycled load from roof. At same time, process combined unique technique make fully contact irregular makes successful application plugging 1305 working face, avoids problems low tight-connection ratio secondary air-leakage channel resulted traditional technology, effectively improving coal production terms safety high efficiency.