SU1247449A1 - Method of constructing a canal - Google Patents

Description

The invention relates to the technology for the production of earthworks by suction dredgers during the construction of canals in highly rugged terrain, passing through elevations.

The aim of the invention is to increase the efficiency of soil excavation and reduce the cost of work.

FIG. 1 shows the construction of the channel, plan view; in fig. 2 is a section A-A in FIG. one.

The method is carried out as follows.

From the main dredger, pioneer trench 1 brings water to the foot of elevation 2 through which the channel 3 passes. Rise 2 for normal operation of dredgers needs to be developed to mark 4. Simultaneously with the elevation command marks 2 bulldozers 5 longitudinal - a trunk trench 6 is arranged with a knife to the width of the knife. On the slopes of elevation 2 on both sides of the trunk trench 6, flush trenches 7 are cut into 2 m deep and 3.0 m wide along the bottom, and 7, joined by pulp-dump trench 8, along which time It is activated primer is transported in reduced places from cocoa levee obvalovaniya 9. Between backbone 6 and 7 flush tranche E (except the last in the direction of stream flow) allowed jumpers 10. In pioneer trench 1 is set floating na5

0 5

pine station 11, from which water is supplied through two pipelines 12 and 13. Pipeline 12 supplies water to the beginning of trunk trench 6 with flow rate Q 1.0 and speed, 5 m / s. The pipeline 13 water is supplied to the point 14, in which there is a decrease in the transport capacity of the flow, flow rate of 0.25. The flow rate in the trench x 7 and 8 is equal to 1.5 m / s. From plots 15 adjacent to a working flush trench, the soil is developed with bulldozers 5 and laid in a stream of water flowing through trench 7. As a result of erosion of this soil, a slurry is formed, which is transported to positions 16. After the soil has been developed on areas 15 adjacent to the working trench, project mark 4, the development of soil 1, which forms the same trench 7, is carried out by periodically feeding it with bulldozers 5 to the latter in the process of its self-crushing. Having developed the soil at the site of the latter (in the direction of flow) of the trench, bulldozer 5 disassembles jumper 10 between trunk 6 and the penultimate flush 7 trenches. Behind this trench, the trunk trench is poured with soil using a bulldozer 5, thereby directing water into this trench. The remaining soil from the development of the last flush trench 18 by the bulldozer 5 is transferred to the stream of water flowing through the penultimate flush trench 7. Soil excavation is carried out along the remaining flush trenches.

FIG. g

Claims (2)

1. METHOD OF CONSTRUCTION OF A CHANNEL, including the development of an elevation by passing the maximum water flow through the main and flush trenches, the alternate development of the elevation sections by switching the water supply by sequentially blocking it with jumpers and opening the lintels of the flushing trenches, transporting the washed out soil outside the channel channel through a pulp-dump trench, characterized in that, in order to increase the efficiency of excavation of the elevation and cost reduction of work, in the working flushing trench dispersal soil is supplied from adjoining sections in an amount equal to or greater than the transporting ability of the flow in a given trench, and water is additionally supplied to the place of decreasing transporting ability of the working flushing or pulp-discharge trenches. 2. The method according to p. 1, characterized in that after the development of the soil in areas adjacent to the working trench until the design mark, they develop the soil composing the same trench by periodically feeding it to the latter in the process of its self-erosion. 1247449 A1 FIG. 1