Tianhong Yang

TL;DR: A flow-stress-damage coupling model for heterogeneous rocks that takes into account the growth of existing fractures and the formation of new fractures is proposed in this article, which is used to investigate the behaviour of fluid flow and damage evolution, and their coupling action, in samples that are subjected to both hydraulic and biaxial compressive loadings.

TL;DR: In this article, a coupled gas flow and solid deformation numerical model was developed and applied to simulate the evolutionary process of such catastrophic coal failures in underground collieries, which can be used to identify the outburst mechanisms, parameterizing the causative processes, and to define potential precursors of failure.

TL;DR: In this paper, a coupled flow-stress-damage model is presented to simulate the progressive development of fractures and the associated groundwater flow under incremental loading conditions resulting from mining processes, and the model is applied to examine the influence of mining advance on the initiation, extension, and evolution of an outburst conduit as it develops adjacent to the mine panel.

TL;DR: In this paper, a coupled stress-damage-flow model was proposed to investigate the deformation and fracture characteristics of overburden strata, the evolution of gas permeability and gas flow in target coal seams, and the effectiveness of long-distance pressure relief gas drainage was evaluated on the basis of the calculated results from a dynamic modelling of extraction of protective coal seam at great depths.

TL;DR: In this article, a seepage-stress cross-coupling anisotropic model considering the coupled effect of the seepages and stress is described and applied to analyze the influence of the principal orientations of the joint sets on the aisotropic properties of the rock mass.