Abstract To accurately predict coal burst hazards and estimate the failure of pillars in underground mining systems, it is great significance to understand mechanical behavior coal-rock bimaterial composite structures. This paper presents experimental numerical investigations on response rock-coal, coal-rock, rock-coal-rock structures under triaxial compression. The compression experiments are ...

In order to prevent the multi-dynamic disasters induced by rock burst and roof water inrush in strong coal seams under multi-aquifers, such as is case with 207 working face Tingnan mine considered this study, exhibited characteristics of two types dynamic disasters, namely inrush, were analyzed. Based on lithology predicted caving height roof, contradiction between was light these analyses, an ...

Microseismic monitoring is a common tool in the mining production process; for supervising huge amount of microseismic data, effective analysis tools are necessary. In this study, results events at Maoping lead-zinc mine Yiliang County, Yunnan Province, and spatiotemporal distribution characteristics analyzed. We analyze temporal using fractal theory, combining change dimension with rock burst ...