Up to the present time, earth-rock work in hydraulic construction has been carried out with equipment which operates on the basis of a cyclic technical scheme. Construction experience indicates that cyclic technicalschemes for performing earth--rockwork are labor-consuming and call for significant expenditures of resources and time. In recent years, at ferrous and nonferrous metallurgical enterprises, in the coal industry, and at quarries from which construction materiais are extracted, the progressive eyelic-flowline and flowline have been introduced [1][2][3][4][5][6][7][8][9][10][11]. Investigations carried out by several institutes belonging to the mining industry have revealed that the use of cyclieflowline techniques in earth--rock work makes it possible to increase the productivity of labor by a factor of 2 to 3 and to reduce the cost of this work by 20%.In hydraulic construction, the cyclic-flowline and flowline techniques could find application primarily for the construction of embankment dams, especially in the extraction and conveyance of the earth and rock material from the quarries to the dams, for exploitation of gravel--sand and rock quarries to obtain aggregates for concrete, and for constructing canals by placing soils in fills.In the flowline technique, use is made of continuous-action machines, and in the cyclic-flowline technique, a combination of cyclic-and continuous-action machines is used: excavators, loaders, dump trucks, crushers, and belt conveyors or any other types of continuous-transport machines, whichare the main links in the cyclic-flowline technique.The extraction of soft andgravel--sandsoils by cyclic-flowline and flowline techniques can be carried out by means of mass-produced equipment and without any additional technical operations. In the excavation of semirock and rock material, for transport by ordinary belt conveyors it is necessary to crush the rock to a size less than 600 mm, or use should be made of special belt conveyors adequate for transport of rock material over 600 mm in size. These special belt conveyors are being developed at the present time [ii]. The characteristics of conventional belt conveyors are presented in Table 1 [I].