Establishment of rational profile and cross-section of capital trenches
Abstract
The practical significance of the question of the method of determining the value of the longitudinal slope of trenches and their cross-section is to reduce the amount of work on the construction of capital trenches, which on average for quarries are about 10-15% of the total amount of earthworks, and in absolute figures reach several million cubic meters. At an average cost of 1 m3 of 8-10 rubles, even an insignificant reduction in excavation works will reduce capital expenditures for quarries by several million rubles. For this purpose, three main technical parameters related to trench design were analyzed: longitudinal slope, determined by the volume of mining operations (freight turnover), type of traction, type of locomotive, and operating conditions of the quarry tracks; width of the trench base, which is set depending on the track gauge, the number of railroad tracks to be laid and water drainage conditions; slope angles set depending on the geotechnical properties of the soils in which the trench is located.
References
- Babichkov A.M. and Egorchenko B.F. Traction Calculations. Transzheldorizdat, 1949.
- Rules of Technical Operation of Coal Deposits by Surface Mining. Uglegletehizdat, 1949.
- Sokolovskiy V.V. Statics of loose medium. Ed. of the AS USSR, 1942.
- Tymovskiy L.G. Rail transportation in quarries. Ugletekhizdat, 1951.
- Fidelev A.S. Calculation methods in designing of complex mechanized quarries. Ed. of the AS of the Ukr. SSR, 1954.
- Sheshko E.F. Fundamentals of the theory of opening of quarry fields. Ugletekhizdat, 1953.