Shredding of stumps below the soil surface is constrained by intense abrasion of the cutting elements as a result of their interaction with the soil particles. Therefore, to solve this problem is to remove the stump from the upper soil layer. To perform this operation as a working bodies rip-strip off elements are encouraged to use in the form of pieces of rope that will not only prepare the ground around the stump, but also clear it from adhering soil. Application of this technology will reduce the abrasion and increase grinding period of cutting elements of machines for grinding stumps, thereby increasing their productivity.

Multivariate computer experiment is planned, which characterizes the process of working of site-maker for the formation of sites around the stumps. Input process criteria were divided into 4 groups: "Options of site-maker", consisting of the construction of the machine, "Kinematic parameters", describing its technical characteristics, "Parameters of the soil" and "Parameters of the stump". The research results can be used in the design and manufacture of site-makers with flexible working bodies and in their application to the felling and slash areas.

Design of patch-maker is presented performing soil removal around the stump for its cleaning and lowering it below ground level to improve the performance of machines for grinding stumps, improve patency of tractor units and improve subsequent silviculture works in clearings. A device for increasing coverage, reducing the time and increasing productivity, is hung on boom of telescopic hydraulic manipulator. Working bodies of а patch-maker, with the aim of improving the quality of stump cleaning from dirt, are flexible and they are elastic elements in the form of pieces of rope.

This article is devoted to analysis basic requirements for innovative projects, in the selection of their for investment. Considered the structure of innovative projects and indicators of scientific and technological level of development.

Technological process and design of site-maker is proposed with flexible working bodies in the form of rope pieces, performing remote of the soil by sites around stumps for their grinding below ground level in order to improve the quality of tillers on cutting and efficiency of the cutting machine elements to reduce the stumps by reducing wear and tear resulting from their contact with soil particles. A mathematical model of site-maker is developed, system of equations describing the device as a whole and interaction of the elements of flexible working bodies, soil and stump one another are presented.