Coal-rock combination refers to the coal and rock as a whole, failure of whole structure is main cause for instability deep underground engineering. In engineering, coal-rock usually under certain hydrogeological conditions, it prone seepage rheological accidents due long-term action water stress. this study, creep constitutive model considering influence moisture content was established based ...

Excavation in engineering significantly changes the initial stress state of rock, which makes rock inevitably complex unloading conditions, thus it is great significance to make a profound investigate mechanical characteristics under condition. This paper carried out two different paths including conventional triaxial compression and confining pressure tests on granite specimen from Sanshandao ...

Finite element method and dimensional analysis have been applied in the present paper to study a hydraulic impact, which is used in a non-explosive rock breaking technology in mining industry. The impact process of a high speed piston on liquid water, previously introduced in a borehole drilled in rock, is numerically simulated. The research is focused on the influence of all the parameters inv...

Finite element method and dimensional analysis have been applied in the present paper to study a hydraulic impact, which is used in a non-explosive rock breaking technology in mining industry. The impact process of a high speed piston on liquidwater, previously introduced in a borehole drilled in rock, is numerically simulated. The research is focused on the influence of all the parameters invo...

The common occurrence of various number and distribution hole flaws complicates the mechanical behavior fracture mode rock masses that contain them. This study develops seven numerical models limestone samples with different numbers distributions circular using 2-D particle flow discrete element code (PFC2D) to investigate their impact on properties while maintaining same area. In addition, it ...

Affected by mining stress, roadways surrounding rock face problems such as serious deformation and failure difficult support. In this study, with the II2 area rise in Taoyuan Coal Mine taken engineering background, evolution laws of plastic zone rises during advance process working were explored aid FLAC3D software. The results suggested that increase significantly when distance between track i...