The beginning, laid in the USSR in 1953, of hydraulic stripping of coals and strong rocks in the mining industry, led to a number of domestic and foreign experimental studies of nozzles in order to determine those of their profiles, which provide maximum forces on the bottom hole - preventing the flow.
The nature of rock fracture under the action of the cutter depends on the stresses in the area of their concentration in the massif, determined by its outlines and the applied force. In the process of cutting the boundaries of the array, the magnitude and angle of the applied force with the contact site change.
In the study of stresses in sediments, a thin layer on a metal wall is treated as an elastic medium lying on a perfectly rigid base.
In the calculation of pipelines to calculate the head losses, the formula is used...
The tasks related to the research of the mechanohydraulic method of rock destruction have been discussed in several domestic and foreign articles and in reports at international symposia on jet cutting technology.
