Results 281 to 284 of about 16,961 (284)

Research on the mechanical properties of hard roof in underground coal mining

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1990
openaire   +1 more source

Fracture failure analysis of hard–thick sandstone roof and its controlling effect on gas emission in underground ultra-thick coal extraction

Engineering Failure Analysis, 2015
exaly  

Water injection softening modeling of hard roof and application in Buertai coal mine

Environmental Earth Sciences
Teng Teng, Yulong Chen, Chen Yulong
exaly  

Test Method for Hardness of Mineral Aggregate Used on Built-Up Roofs

2010
openaire   +1 more source