CN207869802U - A kind of economizing type Rain Garden for mine greening - Google Patents

Abstract

The utility model relates to an energy-saving rainwater garden for mine greening, which comprises a planting soil layer, a small crushed stone layer, a large crushed stone layer, an anti-seepage geotextile, and an original soil layer; The seepage pipe, the water inlet of the seepage pipe is externally connected to the water source, and the water outlet of the seepage pipe is externally connected to the river channel, drainage pipe network or storage tank; there are several seepage holes evenly distributed on the pipe of the seepage pipe, and the seepage pipe is covered with a permeable geotextile; The planting soil layer, the small crushed stone layer and the large crushed stone layer are provided with block stone pile wells. The height of the block stone pile wells is 600mm, and one is set every 2m. The utility model provides an energy-saving rainwater garden for mine greening, which can quickly filter the rainwater in rainy days and infiltrate it into the underground crushed stone layer and block wells for storage, and can also pass through capillary action in dry days. Make the water in the deep underground moisten the plants on the ground; it not only makes effective use of the discarded rocks and tailings sand produced in the mining process, but also solves the technical problem of arid and barren mine soil environment.

Description

A Conservation Rainwater Garden for Mine Greening

technical field

The utility model relates to the technical field of municipal garden engineering, in particular to an energy-saving rainwater garden for mine greening.

Background technique

During the mining process, the area of exposed slopes continues to increase, dust pollution is serious, underground aquifers are destroyed, waste rocks, tailings, etc. occupy a large area of land, causing serious environmental pollution, and the natural ecological system of the mining area is damaged. many economic and social problems. The research on mine environmental governance and ecological reconstruction shows that the main limiting factor of mine greening is the dry soil matrix and poor nutrients. During the rainy season, rainwater cannot be infiltrated into the deep underground in a timely and large amount. In the dry season, due to poor soil water retention capacity, Frequent watering is required, resulting in waste of manpower and resources, affecting the absorption of water and nutrients by plant roots, and thus affecting the normal growth and development of plants.

Utility model content

In order to solve the above technical problems of mine greening, the utility model provides an energy-saving rain garden for mine greening. The specific technical solution is: the rain garden includes planting soil layer, small gravel layer, Stone layer, anti-seepage geotextile, original soil layer;

The thickness of the planting soil layer is 300mm;

The thickness of the small gravel layer is 100mm;

The thickness of the large gravel layer is 200mm;

The anti-seepage geotextile is composed of a non-woven fabric layer and a plastic film laminated to each other, and the non-woven fabric is located above the plastic film.

Furthermore, there is a seepage pipe lying horizontally in the small gravel layer, the seepage pipe is laid along the slope, the higher end of the seepage pipe communicates with the external water source, and the lower end connects with the river course, drainage pipe network or storage pool connection;

There are several seepage holes evenly distributed on the pipe of the seepage pipe, the distance between adjacent seepage holes in the length direction of the seepage pipe is 100-200mm, and the distance between the seepage holes is evenly distributed in the circumferential direction of the seepage pipe There are 6 seepage holes, and the diameter of the seepage holes is 1-3mm.

Further, the planting soil layer, the small crushed stone layer and the large crushed stone layer are provided with block stone pile wells (6), the height of the block stone pile wells is 600mm, and the block stone pile wells are set every 2m One, the block pile well is formed by stacking mine waste rocks with a diameter of 50-100mm.

Further, the planting soil layer is composed of tailings sand and sludge compost, and the mixing volume ratio of the tailings sand and sludge compost is 20:1;

The small crushed stone layer is filled with small particle size mine waste rock, and the particle size of the crushed stone in the small crushed stone layer is 5-10mm;

The large crushed stone layer is filled with large-sized mine waste rocks, and the particle size of the crushed stones in the large crushed stone layer is 20-30 mm.

Further, the seepage pipe is a UPVC perforated pipe or a PPR perforated pipe;

The diameter of the seepage pipe is 50mm;

The seepage pipe is covered with a water-permeable geotextile.

Further, the outer side of the anti-seepage geotextile is supported by a mountain skin layer, and the mountain skin layer is provided with a water-retaining fence with a height of 100mm.

Furthermore, the rain garden is located at the slope foot of the mine slope and the mine dump.

The utility model provides an energy-saving rainwater garden for mine greening, which can quickly filter the rainwater in rainy days and infiltrate it into the underground crushed stone layer and block wells for storage, and can also pass through capillary action in dry days. Make the water in the deep underground moisten the plants on the ground; the rain garden of the utility model is provided with a drain, and after the underground rainwater is full, the excess water can be released to prevent the roots of the plants from rot. The utility model not only effectively utilizes the discarded rocks and tailing sand produced in the mining process of the mine, but also solves the technical problem that the mine soil environment is dry and barren.

Description of drawings

Fig. 1 is a longitudinal sectional view of the utility model.

Fig. 2 is a cross-sectional view of the utility model.

Fig. 3 is a plan view of the water seepage pipe of the present invention.

In the figure, 1 is the planting soil layer, 2 is the small crushed stone layer, 3 is the large crushed stone layer, 4 is the anti-seepage geotextile, 5 is the original soil layer, 6 is the stone pile well, 7 is the seepage pipe, and 8 is the permeable water Geotextile, 9 is the mountain skin soil layer, and 71 is the seepage hole.

Detailed ways

The specific embodiment of the utility model is illustrated in conjunction with the accompanying drawings.

As shown in Figures 1 and 2, a kind of energy-saving rain garden for mine greening, the rain garden includes a planting soil layer (1), a small gravel layer (2), a large gravel layer (3) from top to bottom ), anti-seepage geotextile (4), original soil layer (5);

The thickness of the planting soil layer is 300mm;

The thickness of the small gravel layer is 100mm;

The thickness of the large gravel layer is 200mm;

The anti-seepage geotextile is composed of a non-woven fabric layer and a plastic film, and the non-woven fabric is located above the plastic film. The plastic film can be PVC film, PE film, PP film or PI film. film, etc.;

The planting soil layer 1 is planted with drought-resistant and barren mine greening plants, and the drought-resistant and barren mine greening plants are creeper, fufangteng, rose, brocade, torch tree or Chinese pine, but not limited thereto.

There is a seepage pipe (7) recumbent in the small gravel layer (2), and the seepage pipe is laid along the slope. The higher end of the seepage pipe is connected with the external water source, and the lower end is connected with the river course and the drainage pipe. network or pool connection;

There are several seepage holes (71) evenly distributed on the pipe of the seepage pipe (7), and the distance between adjacent seepage holes in the length direction of the seepage pipe is 100-200mm. 6 said seepage holes are evenly distributed in the circumferential direction of the said water seepage hole, and the diameter of said water seepage holes is 1-3mm.

The planting soil layer, the small crushed stone layer and the large crushed stone layer are provided with block stone pile wells (6), the height of the block stone pile wells is 600mm, and the block stone pile wells are set every 2m. The block rock pile well is formed by stacking mine waste rocks with a diameter of 50-100mm.

The planting soil layer is composed of tailings sand and sludge compost, and the mixing volume ratio of the tailings sand and sludge compost is 20:1;

The small crushed stone layer is filled with small particle size mine waste rock, and the particle size of the crushed stone in the small crushed stone layer is 5-10mm;

The large crushed stone layer is filled with large-sized mine waste rocks, and the particle size of the crushed stones in the large crushed stone layer is 20-30 mm.

The seepage pipe is a UPVC perforated pipe or a PPR perforated pipe;

The diameter of the seepage pipe is 50mm;

The seepage pipe is covered with a water-permeable geotextile.

The outer side of the anti-seepage geotextile is supported by a mountain skin layer, and the mountain layer soil layer is provided with a water-retaining enclosure with a height of 100 mm.

The rain garden is located at the slope foot of the mine slope and the mine dump.

The working principle of the utility model is that in rainy days, the rainwater can be quickly filtered and then infiltrated into the underground gravel layer and block wells for storage, and in dry days, the water in the deep underground can be used to moisten the plants above the ground through capillary action. The rainwater garden of the present utility model is provided with a water outlet, and after the underground rainwater storage is full, excess water can be released to prevent plant roots from rot. The utility model not only effectively utilizes the discarded rocks and tailing sand produced in the mining process of the mine, but also solves the technical problem that the mine soil environment is dry and barren.

The above is only the embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure exchange made by using the utility model description and the accompanying drawings is directly or indirectly used in other related technical fields. , are all included in the scope of patent protection of the utility model in the same way.

Claims (7)

1. a kind of economizing type Rain Garden for mine greening, it is characterised in that：The Rain Garden includes kind from top to bottom Plant soil layer (1), small crushed stone layer (2), big metalling (3), anti-seepage geotextile (4), native soil (5)；

The thickness of the planting soil layer is 300mm；

The thickness of the small crushed stone layer is 100mm；

The thickness of the big metalling is 200mm；

The anti-seepage geotextile is superimposed with each other by nonwoven layer and plastic foil, and the non-woven fabrics is located at the plastic foil Top.

2. a kind of economizing type Rain Garden for mine greening according to claim 1, it is characterised in that：It is described small broken Rock layers (2) interior accumbency has a soakaway trench (7), and the soakaway trench is laid with along the gradient, described higher one end of soakaway trench with it is external Water source is connected to, and lower one end is connected to river, drainage pipeline networks or storage pond；

Several water seepage holes are evenly distributed on the pipeline of the soakaway trench, it is adjacent described on the length direction of the soakaway trench Spacing between water seepage hole is 100-200mm, and 6 water seepage holes are evenly distributed on the circumferencial direction of the soakaway trench, The aperture of the water seepage hole is 1-3mm.

3. a kind of economizing type Rain Garden for mine greening according to claim 1, it is characterised in that：The plantation Soil layer, small crushed stone layer and big metalling are equipped with block clitter well (6), and the height of described piece of clitter well is 600mm, described piece of clitter well It is arranged one every 2m, described piece of clitter well is banked up by the chats of diameter 50-100mm.

4. a kind of economizing type Rain Garden for mine greening according to claim 1, it is characterised in that：It is described small broken Rock layers are filled with small particle chats, and the ballast grain sizes in the small crushed stone layer are 5-10mm；

The big metalling is filled with big grain size chats, and the ballast grain sizes in the big metalling are 20-30mm.

5. a kind of economizing type Rain Garden for mine greening according to claim 2, it is characterised in that：The infiltration Pipe is UPVC perforated pipes or PPR perforated pipes；

The caliber of the soakaway trench is 50mm；

The soakaway trench is coated with permeable geotextiles.

6. a kind of economizing type Rain Garden for mine greening according to claim 1, it is characterised in that：The antiseepage Use mountain skin soil layer supporting and retaining system, the mountain skin soil layer that the water blocking enclosing of high 100mm is set on the outside of geotextiles.

7. a kind of economizing type Rain Garden for mine greening according to claim 1, it is characterised in that：The rainwater Garden is located at mine slope slope foot and Mine production.