RU110760U1 - DESIGN OF INPUT AND OUTPUT HEADS ON PIPELINES OF RAIN DRAINAGE - Google Patents

Abstract

 The design of the input and output heads on the rain sewer pipelines, characterized in that it consists of a foundation, a pipe and a portal wall of gabions, which are three-dimensional mesh structures of galvanized wire twisted mesh with hexagonal cells, wire edge, strapping and ties, filled with granite stone, moreover, in each gabion at each third of its height there are horizontal ties connecting the opposite walls, while in the contact zone of the head and soil reverse filter made of non-woven geotextile.

Description

The utility model relates to the design of the input and output heads on the pipelines of rain sewers.

The input (output) headings are the sections of the interface between the rain sewage pipeline and an open watercourse-channel (ditch, ravine) at the entrance to the pipe (exit from the pipe). A channel is an open part of a watercourse (ditch or log). Log - a wide ravine, dry or with a stream.

At present, head designs using gabions are finding wider application.

Gabions are natural building blocks, which are three-dimensional mesh structures of various shapes from twisted wire mesh with hexagonal cells, wire edge, strapping and screed, filled with stone, which over time become part of the natural landscape.

The prior art shore protection structure (RU 224649 C2), consisting of a bulk soil dam and anti-erosion spurs, which are made of concrete blocks, articulated between themselves and retaining walls, arranged at the sole of the dam between the root parts of the spurs, retaining walls are made in a stepped form from masonry of two or more steps, reinforced with reinforcing bars and mesh, anchored into the slope and base of the dam.

The disadvantage of this solution is the strong leachability of the soil.

A culvert structure (RU 79896 U1 - analogue) including a pipe made of metal corrugated structures bent along a given radius and fastened with bolts and nuts with a spherical abutment overlapping surface resting on a profiled base bed is also known from the prior art. The culvert in the body of the railway (road) embankment is made two-tier according to the principle of joint operation of the filtering embankment located in the first tier, and the embankment with a metal corrugated pipe in an armored cage located in the second tier.

The disadvantage of this solution is the lack of resistance of the structure to soil movements.

The technical result to which the claimed utility model is directed is to increase the strength of the entire structure while eliminating the possibility of leaching soil particles.

The design of the input and output headers on the rain sewer pipelines consists of a foundation, a pipe and a portal wall of gabions, which are three-dimensional mesh structures of galvanized wire twisted mesh with hexagonal cells, filled with granite stone, with horizontal ties in each gabion at every third height connecting the opposite walls, while in the contact zone of the head and the soil laid back filter made of non-woven geotextiles.

The design of the head in the claimed solution consists of a foundation and a portal wall of gabions. The channel is fixed by gabions.

This design provides the overall strength and stability of the structure against complete collapse, shear, tipping, moving and deformation.

The design of the heads for fastening the channel and the log is mounted from gabion net products (GSI).

GSI can be of two types:

- box-shaped,

- mattress and mattress.

Box-shaped are made of mesh No. 100 from galvanized wire with a diameter of 2.7 mm.

Mattress and mattress - from mesh No. 80 made of galvanized wire with a diameter of 2.7 mm.

The edge, strapping and tie wire has a coating that matches the type of wire mesh coating.

Granite stone with a grain size of 150-200 mm was used as a filler of box-shaped gabions, and stone with a grain size of 120-150 mm was used for mattress-mattress gabions.

The steepness of the slopes during the fastening of the bed of mattress-mattress gabions is adopted 1: 1.5.

Mattress-mattress and box-shaped gabion structures that fix the channels are installed with the long side perpendicular to the water flow.

As a return filter, excluding the removal of soil particles from the fixed channel, a layer of non-woven geotextile is laid in the zone of contact between the soil of the base and the channel fastening.

At the bottom of the trench, under a layer of geotextile fabric, a sand substrate 200 mm thick is made.

Box gabions are approximately divided into 3 parts vertically by a horizontal screed for structural strength that connects opposite sides of the gabions.

In mattress-mattress gabions, such ties are absent.

Gabions are filled with 2.5-5 cm stone above the top edge for further shrinkage to the required size. The top layer of stones is covered with a fine fraction - the most suitable for further shrinkage.

The use of gabion structures for interfacing a rainwater sewage pipeline with water bodies and streams minimizes the environmental impact of structures. The construction and operation of gabion mounts does not entail changes in the soil, flora and fauna and will not cause irreversible processes in the natural environment.

Further, the utility model is illustrated by drawings, in which:

Figure 1 - General view of the ICG.

Figure 2 - General view of the head of the GSI, coupled with the channel.

Figure 3 is a General view of the head of the GSI, paired with a log.

Figure 4 is a sectional view of the head of the ICG coupled to the channel.

Figure 5 is a sectional view of the head of the GSI associated with the log;

GSI (1) consists of the main body (2) and the cover (3).

In Fig.2: "A" - the width of the natural channel, "H" - the height of the head, "Du" - the diameter of the pipe, "Lkp" - the length of the designed channel.

In Fig. 3: "A" is the width of the projected log, "Lkp" is the length of the projected log, "H" is the height of the head, and "Du" is the diameter of the pipe.

4 and 5, the reference numeral “4” indicates sand preparation.

Claims (1)

The design of the input and output heads on the rain sewer pipelines, characterized in that it consists of a foundation, a pipe and a portal wall of gabions, which are three-dimensional mesh structures of galvanized wire twisted mesh with hexagonal cells, wire edge, strapping and ties, filled with granite stone, moreover, in each gabion at each third of its height there are horizontal ties connecting the opposite walls, while in the contact zone of the head and the ground reverse filter made of non-woven geotextile.