SU1231109A1 - Through-going shore=protecting spur - Google Patents

Description

The invention relates to river hydraulic structures, in particular, coastal spurs, and can be used to repair and restore the blurred river banks, to ensure the sustainability of the road bed of railways and highways, industrial facilities located along the foothill and mountainous stretches of rivers.

The purpose of the invention is to increase the reliability and efficiency of the end-to-end shore protection spur by enhancing the artificial transverse circulation of the offspring ..

FIG. 1 shows a through shore spur, plan view; in FIG. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 shows a section B-B in FIG. t; on .5 - through shore protection pshora, in axonometry.

The coastal spur through is located to the coastline at an acute angle () and consists of one standard size of prefabricated concrete massifs 1, complete in the form of solid or hollow trapezoidal prisms. Arrays 1 are installed in rows .2 and 3 and Rusas 4 and 5 and are interconnected end to end with the help of mounting inserts and loops of reinforcing steel.

The spur is made deaf in the root part 6. In the head-through part 7 of the spur, each upper 3 series of arrays 1. Is placed with mutually partial overlapping of the ends and is displaced upstream 8 towards the channel.

Arrays 1 of the top 4 and bottom 5 Rus in plan are mutually orthogonal.

Through the bank spur works as follows.

The river flow with the direction of flow 8, meeting the extended through part 7 of the spur from rows 2, and 3 arrays 1 with a channel system, is clearly divided into parts. The bottom jets of KaSa 9, saturated with drawn sediment, lose energy due to the formation of vortex flows, changes in direction and passage through the trapezoidal channels directed towards the protected shore 10, which contributes to sediment deposition and build-up of the coast. The upper, more destructive layer of the stream 11 by the channels of the second upper 4 rus is discarded in the direction of movement of the main stream, which goes around the spur, and pushes it towards the axis of the channel, thereby increasing the protected shore zone. Deaf root part 6 of the spur, embedded in the shore, contributes to the overall stability of the spur.

The trapezoidal shape of the arrays 1 with an extended base due to the low location of the center of gravity, the expanded through-head part 7 of the spur, creating a spatial root effect, increases the reliability and efficiency of the structure.

The trapezoidal shape of the channels is characterized by the best hydraulic characteristics and throughput of floating objects. The combination of the trapezoidal shape of the arrays 1 and the channels creates conditions for enhancing the artificial transverse circulation of the stream, increasing the coastal protection zone and the coastal area.

The expansion of the through part of the spur, the placement of rows of arrays with mutual partial overlap and their displacement upstream, the shape of the arrays increase the stability of the structure by 2-2.2 times in comparison with the known design of the spur. The saving in bacon consumption per meter is 23%. .

Laboratory studies of the invention on a large-scale model with pebble-gravel deposits and significant current velocities, characteristic of foothill and mountainous river sections, showed that, compared to the known through spur, the coastal protection zone on curvilinear areas increases to 25%.

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Compiled by T.Motora Editor M.Dshin Tehred N.Bon {fat Corrector G.Reshetnik

Order 2542/32 Circulation 641 Subscription

: VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Claims (2)

1. THROUGH WATERPROOF SPUR, including concrete massifs set in tiers and rows, one of which at the root of the spur adjoins the shore, forming canals towards the protected shore, and between the upper ones - towards the channel,. characterized in that, in order to increase its reliability and efficiency by enhancing the artificial transverse circulation of the flow, the spur is made deaf in the root · part, is located at an acute angle to the coastline, the arrays are butt-joined, and each upstream row of arrays in the head of the spur is placed with mutual partial overlapping of the ends and is shifted upstream towards the channel. 2. The spur according to claim 1, characterized in that the arrays of the upper and lower tiers are made in the form of trapezoidal prisms, are mutually orthogonally large. fie, 1