ABSTRACT
The problems of the direct controlling of the disintegration of rocks from the point of view of costs are analyzed. The criterial function which has the minimum in the field of the drilling parameters that correspond to the minimum of the costs per meter was established. The experimental results obtained at drilling by means of the diamond core bits are introduced. These experimental results enable verification of a criterial function as function suitable for utilization in the development of control in-line system acceptable for criteria of the borehole economy.
