Abstract The design of rock support in hard tunnelling is often assisted by the use empirical engineering mass classification systems. This has involved a wide variety geological- and mechanical-conditions, including poor ground conditions like fault zones weak rocks. For most encountered situations, designs have performed well. However, systems pose several limitations to describe behavior der...

Rockburst caused by the fracture of thick hard roof and instantaneous instability residual coal pillar seriously jeopardize deep mining safety. This study takes Boertai Coal Mine, Shendong, China, as engineering background, in which dynamic mechanisms gob-side roadway surrounding rock are analyzed integrating field research, theoretical analysis, numerical simulation. The results show that over...

27 Using projective and objective measures, effects of rock music on emotion were investigated. Sixty students were randomly assigned to three conditions: hard rock, soft rock, and no music. One group listened to hard rock music while taking a projective test with five ink blots and an objective test with an Emotional Assessment Scale (EAS). The same procedure was used for the second group whil...

This paper focuses on the probabilistic numerical solution of the problems in biomechanics and mining. Applications of Simulation-Based Reliability Assessment (SBRA) Method are presented in the solution of designing of the external fixators applied in traumatology and orthopaedics (these fixators can be applied for the treatment of open and unstable fractures etc.) and in the solution of a hard...

In order to determine the rational width of coal pillars and study surrounding rock control technology gob side entry driving with a narrow pillar, this paper first calculates pillar according limit equilibrium theory; after that, lateral support pressure plastic zone development goaf is analyzed by numerical simulation reserved pillar; finally, through ring breaking deformation regulation entr...