Processing and Measuring Equipment Haulage in Uncased Boreholes
						
						V. V. TIMONIN, A. S. KONDRATENKO 
						Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia 
													Keywords: скважинные горные технологии, геофизические исследования скважин, система транспорти-рования оборудования в горизонтальных скважинах, пневмоударное устройство, drilling technologies, geophysical borehole investigations, equipment haulage system for horizontal boreholes, pneumatic percussion device 
																		
																					 Abstract 
								Results of design and analysis of system for haulage of equipment in uncased boreholes drilled from underground excavations are reported. A thruster is a pneumatic percussion device. The optimal parameters of the haulage system operation in various conditions are determined. Using mathematical description of movement of thruster in well, the authors derive relations for the thruster velocity as a function of various initial data. 
																			                        																														
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