- 41. Improving reliability of drill pipe by strengthening of thread connections of its elements
- (Geotechnical and Mining Mechanical Engineering, Machine Building)
- ... increase the borehole drilling rate. References. 1. Lototska, О.І. (2008). Improving working properties of parts of polygraphic machines. Technology and Technique of Typography (Tekhnolohiia ...
- Created on 19 August 2019
- 42. Geo-energetics of Ukrainian crystalline shield
- (Mining)
- ... of borehole. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, 5(155), 29-35. 11. Khomenko, O., Kononenko, M., & Bilegsaikhan, J. (2018). Classification of Theories about Rock Pressure. ...
- Created on 13 June 2019
- 43. Dependence of the drilling speed on the frictional forces on the cutters of the rock-cutting tool
- (Mining)
- ... displacements of the indenter along the surface of the rock has been improved. It is detailed with reference to drilling of boreholes with crowns of cutting type taking into account the reduced actual ...
- Created on 08 March 2019
- 44. The study on the flows kinematics in the jet pump’s mixing chamber
- (Geotechnical and mining mechanical engineering, machine building)
- ... and predicting the operating conditions of the well borehole pump. References. 1. Yong, H., Lihong, Z., Deyong, Z., Hualin, L., Jinying, W., Jinshen, Y., Yugang, Z. and Zhibin, W., 2016. ...
- Created on 03 March 2019
- 45. Large deformations of the casing string under its own weight in the curvilinear well
- (Geotechnical and mining mechanical engineering, machine building)
- ... Hirnychoho Universytetu, 5, pp. 29‒35. 7. Gulyayev, V. and Shlyun, N., 2016. Influence of friction on buckling of a drill string in the circular channel of a borehole. Petroleum Science, 13, ...
- Created on 26 December 2018
- 46. Investigation into crown stability at underground leaching of uranium ores
- (Mining)
- ... 2013. Technology of development of uranium deposits in Mongolia by the method of borehole underground leaching. National Mining University. Zbirnik naukovyh prat., 42, pp. 74‒80. 4. Ahrens, V. Zh., ...
- Created on 26 December 2018
- 47. Efficiency of preparation of mountain mass at careers of building materials
- (Geotechnical and mining mechanical engineering, machine building)
- ... using a new design of borehole charges to develop a resource-saving and environmentally safe method of mining construction materials on non-ore quarries. Methodology. To substantiate the rational ...
- Created on 27 August 2018
- 48. Content
- (Content №2 2018)
- ... O.V.Zhevzhyk. Influence of the heat-transfer stream pressure on the surface of the rock in a process of the thermal reaming of the borehole 53 I.V.Belmas,D.L.Kolosov, ...
- Created on 25 July 2018
- 49. Substantiation into “rock massive – underground gasifier” system adaptability of Solenovskyi site in the Donetsk coal basin
- (Mining)
- ... and the velocity of combustion face advance, were obtained. Practical value. A mathematical mechanism was proposed for the determination of stresses in various rock massif sections in case of borehole ...
- Created on 03 July 2018
- 50. Influence of the heat-transfer stream pressure on the surface of the rock in a process of the thermal reaming of the borehole
- (Geotechnical and Mining Mechanical Engineering, Machine Building)
- ... research on the high-speed interaction of the heat transfer medium jet with the surface of the borehole in the process of fragile rock destruction with the purpose of determination of the heat transfer ...
- Created on 16 May 2018