The design of a multifunctional mechanized walking casing (hereinafter referred to as MMPC) consisting of two sections with a cyclic walking method of movement, designed for practical application in various technological tasks of subway development as a multifunctional platform, has been substantiated. It has been established that a two-section construction with time-differentiated walking of sections provides the necessary speed of sinking of preparatory excavations and safety of works during their conduct due to timely advance support of the roof and alternate perception of the overlap of sections of the rock pressure with preservation of the stability of the elements of the structure at the values of the safety factor n>1.5. Theoretically substantiated the dependence of the rock pressure load acting on the MSHK from the side of the roof rock massif on the strength of rocks and roof type on stability. It is established that in the passed preparatory excavation with dimensions 5,0x3,5 m and depth of 250 m the maximum load of 240 kN/m2 of mining pressure from the side of the roof on MMShK occurs on unstable roofs with III type of roof on collapsibility, and the minimum 120 kN/m2 - at stable roofs, thus with increase of a coefficient of strength of rocks for I and III types of a roof on collapse there is an increase of resistance to compression of rocks of a roof in an array and decrease of loading on MMSHK. The design and speed parameters of hydraulic cylinders of hydraulic struts and hydraulic jacks of MMShK moving under the conditions of sinking at maximum load were justified, which allowed to determine the working cycle time of MMShK sections moving 2.15 min and speed 0.93 m/min.