CN201224877Y - Dam surface layer net bag combined blanket type rushing-proof anti-bursting construction structure - Google Patents

Abstract

The utility model aims to provide a dam surface mesh bag combined with a blanket type anti-shock and anti-collapse construction structure, which belongs to the field of engineering technology. The silt bag described in the utility model is made of geotextile into a flat shape of an envelope, and the inside is filled with silt with a thickness of 5-20 cm as required; the plastic rope net is laid on the surface of the embankment, and the silt bag is flatly spread on the plastic rope net On the top of the dam, the plastic wire mesh is laid on the layer of sand bags, and the silt with a thickness of 2-8cm is covered on the plastic wire mesh and the layer of sand bags, and grass seeds are sown to form a mesh bag on the surface of the dam combined with an anti-shock and anti-collapse structure. .

Description

Embankment surface mesh bag combined with blanket anti-scour and anti-collapse construction structure

technical field

The utility model belongs to the technical field of engineering, in particular to a dam surface mesh bag combined with a blanket type anti-shock and anti-collapse construction structure.

Background technique

At present, due to the intrusion of desert shifting sand dunes in some sections of the Yellow River Hetao, quicksand continuously pours into the Yellow River channel, causing the riverbed to gradually rise. It causes a great risk of flooding and collapse of the dykes on both sides of the bank.

Utility model content

The utility model aims to provide a mesh bag combined with blanket-type anti-scour and anti-collapse construction structure on the surface of the embankment. layer, to resist the erosion of the flood on the dam, so that the flood can overflow the top of the dam, and the dam body will not be washed away by the water flow and cause the embankment to burst.

The utility model is a special application for the patent No. ZL98219274.6, the patent name is "Net Type Anchor Root Lawn Blanket" (applied by myself), and the mesh bag on the surface layer of the embankment is combined with the blanket type anti-collapse construction structure.

Lay high-strength plastic rope nets on the outer slope, inner slope and top of the dam, and the plastic rope nets are closely attached to the dam body; use polyester geotextile as the fabric to make bags, and the shape of the bag is made into an envelope-like flat bag. Fill the bag with silt to form a silt bag, spread the silt bag flatly one by one from the bottom of the slope on the slope where the plastic rope net is laid, the silt bags are close to each other, leaving no gaps, Constitute one layer of silt bag protective layer. Spread anti-aging plastic wire mesh on the protective layer of the sand bag, and then lay sand with a thickness of 2-8cm, cover the plastic wire mesh and the sand bag, and then sow grass seeds, and wait for the grass seeds to germinate Rooting, the grass roots anchor the surrounding silt and then pass through the plastic screen, pass through the bag surface of the silt bag, pierce into the silt bag and then into the dam body, the grass roots will put the surface silt, plastic wire mesh, silt bag, The plastic rope net and the dam body are tightly combined to form a net bag combined protective layer. In the mesh bag combination protective layer, the plastic rope net connects the mud and sand bags one by one on the slope to form a blanket-like whole below, and the plastic wire mesh connects the grass roots, surface silt and mud and sand bags to form a blanket-like whole above. The surface blanket type combined in this way cannot be washed away by water flow. When the flood floods to the embankment, the water waves hit the mesh bag combined with the blanket protective layer, the water flow cannot wash away the sediment in the blanket protective layer, and the mesh bag combined with the blanket protective layer blocks the erosion of the water flow on the dam. Outside the protective layer, the flood cannot wash away the sediment inside the dam. Even if the river overflows the dam crest, the net bag on the dam crest and the inner slope combined with the blanket protective layer can also withstand the impact of the water flow, making the dam The internal sediment will not be washed and washed, and the flood will overflow the top of the dam, and the dam will not break. This creates conditions for timely stacking sandbags on the top of the dam to increase the height of the dam and prevent the dam from breaking.

Description of drawings

Fig. 1 is the schematic diagram of the utility model plastic rope net.

Fig. 2 is the schematic diagram of the plastic screen of the present invention.

Fig. 3 is a schematic diagram of the front view of the sand bag of the utility model.

Fig. 4 is a schematic left view of the utility model mud bag.

Fig. 5 is a partial cross-sectional schematic diagram of the utility model embankment surface mesh bag combined with blanket anti-scouring and anti-collapse construction structure.

Fig. 6 is a schematic cross-sectional view of the utility model embankment surface mesh bag combined with blanket anti-scouring and anti-collapse construction structure.

In the figure, 1 is a plastic rope net, 2 is a plastic wire mesh, 3 is a sand bag, 4 is a geotextile bag fabric, 5 is the outer slope of the dam, 6 is the inner slope of the dam, 7 is the top surface of the dam, and 8 is the Sediment, 9 for grass seedlings, and 10 for river water.

Detailed ways

Now in conjunction with the diagram the utility model is further described: the outer slope surface 5, the inner slope surface 6 and the top surface 7 of the leveling embankment, and the outer slope surface, the inner slope surface and the top surface are paved with a mesh size of 5cm × 5cm to 20cm × 20cm The anti-aging plastic rope net 1 between; Use the polyester geotextile of 100 grams to 200 grams per square meter as bag fabric 4, make mud bag 3, mud bag 3 is made envelope-like flat shape, the flat shape of mud bag 3 The bag body is filled with silt with a thickness between 5cm and 20cm. Starting from the bottom of the embankment, one silt bag and one silt bag are flatly spread on the slope, and the adjacent silt bags are tightly connected to each other. paste, without leaving any gaps, on the outer slope surface 5, inner slope surface 6 and top surface 7 to form a sand bag layer, anti-aging plastic wire mesh 2 is laid on the top of the sand bag layer, the mesh size of the plastic wire mesh 2 is Choose between 0.8cm * 0.8cm to 2cm * 2cm, then cover the silt 8 of 2-8cm thickness on the top of plastic screen 2 and silt bag layer, block the sunlight to the irradiation of silk screen and bag fabric; Sow grass seeds on the silt 8, and after the grass seeds germinate, the roots of the grass seedlings 9 anchor the surrounding silt and gradually pass through the mesh of the plastic mesh and the surface of the geotextile bag to enter the silt bag, then pass through the silt bag and the plastic rope The mesh of the net is pierced into the dam, and the grass roots tightly combine the surface sediment 8, the plastic wire mesh 2, the silt bag 3, the plastic rope net 1 and the dam body, forming a structure that is both resistant to erosion and has tension on the surface of the dam. , The net bag that can resist the impact of water flow is combined with the blanket protective layer. In this way, even if the flood floods to the top of the dam, the net bag combined with the blanket protective layer can resist the erosion of the water flow outside the protective layer, and the sediment in the dam body will not be washed away and lost, and the dam will not burst. Create conditions for timely stacking high dams with sandbags to block floods. In the slope toe part of the outer slope of the embankment that is often flooded by water, two layers of mesh bag bonding layers or multiple layers of mesh bag bonding layers can be repeatedly constructed to strengthen the mesh bag bonding blanket protective layer. Polyester geotextile sand bags, plastic wire mesh, and plastic rope nets are cheap in terms of unit area consumption, and sand can be obtained locally. Mechanized construction can be used for dyke surface mesh bags combined with blanket-type anti-collision and anti-collapse construction structures.

The utility model embankment surface mesh bag combined with blanket anti-scour and collapse construction structure can be implemented on embankments and sea khouang of Huaihe River, Yangtze River and other rivers, so as to ensure the safety of embankment during flood season. The mesh bag combined with the blanket-type anti-shock and anti-collapse structure is suitable for plant root anchoring, suitable for plant growth, will not cause white pollution, and is conducive to ecological restoration.

Claims (3)

1, a kind of dykes and dams top layer mesh bag is in conjunction with the anti-constructing structure of bursting of blanket formula erosion control, and it is characterized in that: netting (1) is put the surface at dykes and dams for the plastics netting between mesh specification 5cm * 5cm to 20cm * 20cm, shop; The flat stall with goods spread out on the ground for sale of silt sack (3) is layered on has put on plastics nettings domatic, and adjacent silt sack (3) is close to mutually, does not stay the gap, constitutes silt sack layer; Put on silt sack layer plastic silk screen (2) shop, the silt of 2-8cm thickness (8) cover plastic silk screen (2) and silt sack layer above.

2, dykes and dams according to claim 1 top layer mesh bag is in conjunction with the anti-constructing structure of bursting of blanket formula erosion control, and it is characterized in that: silk screen (2) is the plastic silk screen between mesh specification 0.8cm * 0.8cm to 2cm * 2cm.

3, dykes and dams according to claim 1 top layer mesh bag is characterized in that: make the envelope flat pattern, the silt of the inside filling thickness between 5cm to 20cm with the silt sack (3) that geotextiles is made in conjunction with the anti-constructing structure of bursting of blanket formula erosion control.

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