The Ms 8.0 Wenchuan earthquake occurred on 12 May 2008, in the Sichuan Province of China, and it was accompanied by a series strong aftershocks. mechanisms contributing to triggering aftershocks have attracted international attention. In this paper, based previous analysis spatiotemporal distribution regarding pore pressure diffusion deep fluid, we established three-dimensional hydraulic–mechan...

In order to alleviate the relationship between mining and roadway, 3204 working face 3206 roadway in Shanxi Taitou coal mine are taken as an example, width of support parameters while reversing excavation under dynamic pressure optimized. The research includes field investigations, theoretical analysis, numerical simulation, tests. Based on characteristics roof fracture distribution pillar stre...

In rocks or rock-like materials, the constituents, e.g. quartz, calcite and biotite, as well as the microdefects have considerably different mechanical properties that make such materials heterogeneous at different degrees. The failure of materials subjected to external loads is a cracking process accompanied with stress redistribution due to material heterogeneity. However, the latter cannot b...

It is very important to study the stability of tunnel in area affected by mining activities. In particular, choice coal pillar size has a direct influence on these tunnels. The authors this used Flac3D program model face LC1 with various sizes. 220 m-long known as 20 degrees rock mass layers. studied pillars are widths at 5 m, 8 10 15 and 30 m. highest vertical stress maximum horizontal placed ...

Coal gangue, as a solid waste produced in the coal mining process, can be disposed by being prepared into backfill materials and then filled underground goafs, thus controlling strata movement surface subsidence. However, gangue are non-continuous; therefore, research deformation induced should consider creep compression behavior of materials. The took panel Tangshan Mine (Tangshan City, Hebei ...

Abstract Nowadays, polymers are well-established in geotechnical applications, for example as grouting material soil and rock stabilization, or anchorages. Concerning ground improvement, the act a binder that, if cured, holds grains together by adhesive cohesive forces. This special characteristic enables use of less therefore saves costs but requires detailed knowledge behavior to avoid applic...