- 41. Determination of parameters of intensive flat coal seams mining technology in the conditions of negative effect of mining operations on the daily surface
- (Mining)
- ... are given. Originality. The conditions of closing of the daily surface cracks and failures caused by flat seam longwall mining are determined. Dependence between damage caused by the coal reserves ...
- Created on 27 October 2015
- 42. Simulation for fracture bysmooth particle hydrodynamics code
- (Geotechnical and mining mechanical engineering, machine building)
- Authors: I.Ye. Shipovskii, Cand. Sci. (Tech.), State Oceanarium of Ukraine, Principal Researcher, Sevastopol, Crimea Abstract: Purpose. Determination of the influence of cracks presence ...
- Created on 29 March 2015
- 43. Decorative stone block quality control based on surface digital photogrammetry
- (Mining)
- ... shooting of cracks has been established. The method of calculation of the technology systems performance for separate production units of the quarry and technical losses of their use has been developed. ...
- Created on 14 January 2015
- 44. The study of dynamics of development of deformation processes and crack formation in the rock massif around the working which is supported under a longwall
- (Mining)
- ... of the rock massif; place of location and development path of cracks.Growth of the main crack in the roof is caused by its subsidence, and determines the stress on the tunnel and its deformation. We have ...
- Created on 14 January 2015
- 45. Specifications of the rock massifs by the block sizes
- (Geology)
- ... of natural jointing in a massif by average distance between cracks in rock. Methodology. The natural jointingpercentage in the rock massifs has been determined experimentally by measurement of ...
- Created on 14 January 2015
- 46. Borehole stability in stratified shale
- (Mining)
- ... shale is mainly composed of illite and kaolinite; and stratifications are actually 500 nm–30μm wide microcracks (stratified shale of Weizhou formation, Beibuwan basin, South China Sea). Cohesion and ...
- Created on 10 July 2014
- 47. Abutment pressure behavior in conditions of weak wall rocks
- (Mining)
- Authors: Yu.M. Khalimendik, Dr. Sci. (Tech.), Professor, State Higher Educational Establishment “National Mining University”, Head of Mine Surveying Department, Dnipropetrovsk, Ukraine Yu.A. Zabolotnaya, ...
- Created on 26 February 2013
- 48. Influence of mining enterprises on propagation of technogenic jointing of crystalline rocks at Kremenchuh city
- (Geology)
- ... of cracks propagate along the directions inherited from fractures of structures of this area. Systems of cracks propagated otherwise have local distribution and keep within the quarries field. For monitoring ...
- Created on 26 December 2012
- 49. Influence of technogenic factor on physical properties of sandstone
- (Mining)
- ... cracks formation promotes forming of sandstones permeability corresponding to the III class collectors. ...
- Created on 25 December 2012
- 50. Stability of crack at a monaxonic compression taking into account an internal friction
- (Physical processes)
- Authors: Lokshyna L.Ya., Kostandov Yu.A., Vasylyev D.L. For mining breeds, possessing natural by plenty of cracks and sectional structure, formed by the systems different ...
- Created on 24 December 2012