CN202969396U - Slope protection structure for road waste disposal site - Google Patents

Abstract

The slope protection structure used for the waste slag field described in the utility model includes: multiple rows of planting pits, the planting pits on every two adjacent rows are arranged in a staggered manner, and a degradable geotextile is laid on the bottom of each planting pit, Plants are planted in the planting pit; the wall surface of the planting pit located on the downstream side of the slope is arranged in the vertical direction, and in the planting pit, a dry stone layer is arranged close to the wall surface, and a dry stone layer is arranged close to the dry stone layer. Set with a gravel bedding. In the utility model, by laying degradable geotextiles, the water in the planting pit and the nutrients in the soil are not easily lost from the bottom; by setting the dry stone layer, the soil in the planting pit can be effectively supported, so that The soil in the planting pit will not collapse along the slope due to rainwater erosion or other inducements; meanwhile, the utility model is also provided with a gravel cushion, and the gravel in the gravel cushion has a small particle size, which can prevent the dry stone layer from collapsing. The gaps are filled, which effectively prevents a large amount of water and soil loss.

Description

Slope protection structure for road spoil yard

technical field

The utility model relates to the field of water and soil loss prevention and control, in particular to a side slope protection structure used for a waste slag field.

Background technique

In the process of road construction, a large amount of muck will be produced in the process of excavating roadbeds, tunnels, and building bridges. Except for a small part of the muck used in engineering, most of the rest will be discarded along the road to form a spoil ground. . In order to prevent water and soil loss on the slope of the spoil ground, the slope of the spoil ground is usually greened in the traditional technology, but because the slope of the spoil ground is usually mixed with mud, gravel and sand, it is uneven and has poor stability , strong permeability, and poor water storage capacity, which makes it difficult for the traditional planting methods to adapt to the slope of the spoil site and survive. the

In the slope protection engineering in the prior art, in order to ensure the survival of plants, structures for cultivating vegetation are usually arranged on the slope, such as Chinese patent document CN2866605Y discloses a green slope protection structure, which includes multiple a plurality of storage bags, plant growth materials, water-absorbing materials and plant seeds are placed in the storage bags, the plurality of storage bags are closely arranged, and are fixed on the side slope by traction nails, set on the storage bags There is a grille that is secured to the stowage bag by traction spikes. The slope protection structure integrates the storage bag and the slope as a whole, so that the storage bag is not easy to disperse, and the water-absorbing material in the storage bag can store enough water to ensure the growth of vegetation.

The slope protection structure in the above-mentioned prior art is provided with the storage bag so that the plant growth can obtain sufficient water, but the slope protection structure in the above-mentioned prior art is not suitable for the slope protection of the spoil ground, because Because the slope stability of the spoil ground is very poor, it is easy to form a landslide, so it is difficult for the storage bag to be stably fixed on the slope of the spoil ground by traction nails; in addition, because the above-mentioned slope protection structure needs to use a lot Therefore, when used in a large area, the material cost of the structure is also increased, and the economic performance is poor.

Utility model content

In order to solve the problem that the slope protection structure in the prior art is difficult to be stably fixed on the slope of the spoil ground, is not suitable for the slope protection of the spoil ground and has poor economic performance, the utility model provides A side slope protection structure that can be stably arranged on the slope of the spoil yard and has low cost.

The technical scheme of the slope protection structure used for the waste slag field described in the utility model is:

A slope structure for a spoil dump comprising:

Multiple rows of planting pits, the planting pits are dug on the slope, the planting pits on every two adjacent rows are staggered, and a degradable geotextile is laid on the bottom of each of the planting pits. The top of the degradable geotextile and the planting pit are filled with a soil layer, and plants are planted in the soil layer;

The wall of the planting pit located on the downstream side of the slope is arranged in the vertical direction, and in the planting pit, a dry stone layer stacked in the vertical direction is arranged close to the wall;

In the planting pit, a gravel cushion is also arranged between the dry stone layer and the soil layer.

The planting pits are arranged in three or more rows, and the multiple rows of planting pits are arranged in an X shape.

When the angle between the slope surface of the side slope and the horizontal plane is greater than 45°, the slope surface is divided into a plurality of sub-slope surfaces parallel to each other along the sliding direction of the side slope, and each adjacent two sub-slope surfaces are connected through the platform.

The included angle between the platform and the horizontal direction is 1-2%, and gradually rises along the sliding direction of the slope.

The thickness of the gravel cushion is 100-200 mm.

The thickness of the dry stone layer is 150-250mm.

The plant is one or more of white oak, dodder, boluohui, azalea, holly, rosea, pyracantha, masson pine and quercus qinggang.

The height of the soil layer is greater than 30cm.

The distance between two adjacent planting pits on each row of planting pits is 1.5-2m.

The slope protection structure used for the waste slag field described in the utility model has the advantages of:

(1) The side slope protection structure for the spoil yard described in the utility model includes: multiple rows of planting pits, the planting pits on every two adjacent rows are arranged in a staggered manner, and the planting pits are dug on the side slope In the setting type, a degradable geotextile is laid on the bottom of each of the planting pits, and plants are planted in the planting pits and filled with soil suitable for plant growth; the planting pits are located on the downstream side of the slope. The wall is arranged vertically, and in the planting pit, a dry stone layer is arranged close to the wall; in the planting pit, a gravel cushion is also arranged close to the dry stone layer. The utility model arranges multiple rows of planting pits, and lays degradable geotextiles on the bottom of each planting pit, so that the water entering the planting pits and the nutrients in the soil are not easy to lose from the bottom, and it plays the role of water and fertilizer conservation. At the same time, the degradable geotextile used in the utility model will degrade after long-term use, so that it will not have a negative impact on the production of plant roots.

In the utility model, the wall surface of the planting pit located on the downstream side of the slope is set along the vertical direction, and in the planting pit, a dry stone layer is arranged close to the wall; by setting the dry stone layer , can effectively support the soil in the planting pit, so that the soil in the planting pit will not collapse along the slope due to rainwater erosion or other inducements; at the same time, the slope protection structure in the utility model is close to the dry A gravel cushion is also arranged between the stone masonry layer and the soil layer. The grain size of the gravel in the gravel cushion is small, which can fill the gaps in the dry stone masonry layer, thereby effectively preventing a large amount of water and soil loss.

In addition, the raw materials of the dry stone layer and the gravel cushion of the slope protection structure in the utility model can be obtained everywhere in the waste slag yard, and the cost is relatively low, thereby greatly reducing the raw material cost of engineering construction.

(2) In the slope protection structure used for the spoil yard described in the utility model, when the length of the slope is greater than 10m, a plurality of mutually parallel slopes are arranged along the sliding direction of the slope, each Two adjacent slopes are connected by a platform. The advantage of this arrangement is that when the length of the slope is greater than 10m, the slope protection structure becomes more unstable and landslides are prone to occur. By arranging the steps, the stability of the slope can be effectively improved and landslides can be prevented.

(3) In the slope protection structure used for the spoil yard described in the utility model, the included angle between the platform and the horizontal direction is set to be 1-2%, and the slope gradually rises along the sliding direction of the slope. By arranging the steps to gradually rise along the sliding direction of the slope, it is difficult for water to flow downward along the steps, which further plays a role of water retention.

(4) The slope protection structure used for the waste slag field described in the utility model, the plants are white oak, dodder, Boluohui, azalea, holly, rose, pyracantha, masson pine and Qinggang One or more types of Quercus, above-mentioned vegetation is shrubs or trees that are easy to survive, and has relatively developed root system; in order to ensure the necessary soil for plant growth, the utility model also sets the height of the soil layer to be greater than 30cm.

Description of drawings

In order to make the technical solution described in the utility model easier to understand, the technical solution described in the utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1 is the sectional view of tree planting pit described in the utility model;

As shown in Figure 2 is the structural diagram of the slope protection structure described in the utility model;

As shown in Fig. 3 and Fig. 4, it is a structural diagram of the slope protection structure provided with a platform according to the utility model.

The reference signs are:

1-planting pit; 2-dry stone layer; 3-gravel cushion; 4-degradable geotextile; 5-plant; 6-slope; 7-sub-slope; 8-platform.

Detailed ways

Example 1

The slope protection structure for the spoil yard described in this embodiment is shown in Figure 1, including:

Two rows of planting pits 1, the distance between two planting pits 1 connected on each row of planting pits 1 is 1.5m; the planting pits 1 are dug on the slope; the two rows of planting pits 1 are staggered, The bottom of each of the planting pits 1 is laid with a degradable geotextile 4, above the degradable geotextile 4 and in the planting pit 1 is filled with a soil layer, the height of the soil layer is 30cm; The plant 5 is planted in the soil layer; the plant 5 planted in the present embodiment is oak white; the length of the slope in the present embodiment is 9m, and the angle α between the slope and the horizontal plane is 30° .

The wall of the planting pit 1 located on the downstream side of the slope is arranged vertically, and in the planting pit 1, a dry stone layer 2 is arranged close to the wall; in the planting pit 1, A gravel cushion 3 is also arranged between the dry masonry layer 2 and the soil layer;

In this embodiment, the thickness of the gravel cushion layer 3 is 100 mm, and the thickness of the dry stone layer 2 is 150 mm.

Example 2

The slope protection structure for the spoil yard described in this embodiment is shown in Figure 2, including:

Four rows of planting pits 1, the spacing of two planting pits 1 connected to each other on every row of planting pits 1 is 2m; the planting pits 1 are dug on the slope, and the depth of the tree planting pits is 50cm; The rows of planting pits 1 are arranged in an X shape. A degradable geotextile 4 is laid on the bottom of each planting pit 1, above the degradable geotextile 4 and in the planting pit 1 is filled with a soil layer, the height of the soil layer is 50cm; A plant 5 is planted in the soil layer; the plant 5 planted in this embodiment is azalea; the angle α between the inclined surface of the slope and the horizontal plane is 50°, and the slide down along the slope is carried out in this embodiment. The direction divides the slope 6 into three parallel sub-slopes 7, and every two adjacent sub-slopes 7 are connected by a platform 8, and the angle between the platform 8 and the horizontal direction is 1°. And gradually increase along the sliding direction of the slope. The total length of the three sub-slopes 7 in this embodiment is 15m.

The wall of the planting pit 1 located on the downstream side of the slope is arranged vertically, and in the planting pit 1, a dry stone layer 2 is arranged close to the wall; in the planting pit 1, A gravel cushion 3 is also arranged between the dry masonry layer 2 and the soil layer;

In this embodiment, the thickness of the gravel cushion layer 3 is 200 mm, and the thickness of the dry stone layer 2 is 200 mm.

Example 3

Apparently, the slope protection structure for the spoil yard described in this embodiment is shown in Figure 2, including:

Three rows of planting pits 1, the spacing of two planting pits 1 connected to each other on every row of planting pits 1 is 1.8m; the planting pits 1 are dug and set on the slope, and the depth of the tree planting pits is 50cm; The rows of planting pits 1 are arranged in an X shape. A degradable geotextile 4 is laid on the bottom of each planting pit 1, and a soil layer is filled above the degradable geotextile 4 and in the planting pit 1, and the height of the soil layer is 40cm. A plant 5 is planted in the soil layer; the plant 5 planted in the present embodiment is azalea; the angle α between the inclined surface of the slope and the horizontal plane in the present embodiment is 55°, and the present implementation follows the The sliding direction of the slope divides the slope 6 into two parallel sub-slopes 7, and the two sub-slopes 7 are connected by a platform 8, and the angle between the platform 8 and the horizontal direction is 1° , and gradually rises along the sliding direction of the slope. The total length of the two sub-slopes 7 in this embodiment is 13m.

The wall of the planting pit 1 located on the downstream side of the slope is arranged vertically, and in the planting pit 1, a dry stone layer 2 is arranged close to the wall; in the planting pit 1, A gravel cushion 3 is also arranged between the dry masonry layer 2 and the soil layer;

In this embodiment, the thickness of the gravel cushion layer 3 is 200 mm, and the thickness of the dry stone layer 2 is 200 mm.

It should be noted that the "X" type in "the multiple rows of planting pits are arranged in an X-shape" described in the utility model is a common term for those skilled in the art, that is, two rows of planting pits are arranged in a staggered manner, and each The planting pits are located on the center line of the two nearest planting pits in an adjacent row.

The above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the scope of protection of the utility model. the

Claims (9)

1. A slope structure for a spoil yard, comprising: Multiple rows of planting pits, the planting pits are dug on the slope, the planting pits on every two adjacent rows are staggered, and a degradable geotextile is laid on the bottom of each of the planting pits. The top of the degradable geotextile and the planting pit are filled with a soil layer, and plants are planted in the soil layer; It is characterized in that, The wall of the planting pit located on the downstream side of the slope is arranged in the vertical direction, and in the planting pit, a dry stone layer stacked in the vertical direction is arranged close to the wall; In the planting pit, a gravel cushion is also arranged between the dry stone layer and the soil layer. 2 . The slope protection structure for spoil yard according to claim 1 , wherein the planting pits are arranged in three or more rows, and the multiple rows of planting pits are arranged in an X shape. 3. The slope protection structure for spoil yard according to claim 1, characterized in that, when the angle between the slope surface of the slope and the horizontal plane is greater than 45°, along the sliding direction of the slope The slope is divided into a plurality of sub-slopes parallel to each other, and every two adjacent sub-slopes are connected by a platform. 4. The slope protection structure for spoil yard according to claim 2, characterized in that, the angle between the platform and the horizontal direction is 1-2%, and gradually rises along the downward direction of the slope. high. 5 . The slope protection structure for spoil ground according to claim 1 , characterized in that, the thickness of the gravel cushion is 100-200 mm. 6. the slope protection structure for spoil ground according to claim 2, is characterized in that, the thickness of described dry stone layer is 150-250mm. 7. The slope protection structure for waste slag field according to claim 1, 2 or 3, characterized in that, the plants are white oak, dodder, Boluohui, azalea, holly, rose One or more of Pyracantha, Pyracantha, Masson Pine and Quercus qinggang. 8. The slope protection structure for the spoil yard according to claim 4, characterized in that the height of the soil layer is greater than 30cm. 9. The slope protection structure for spoil yard according to claim 1, 2, 3 or 8, characterized in that the distance between two adjacent planting pits on each row of planting pits is 1.5-2m.

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