CN114960699A - Mine ecological fragile area slope restoration system and method - Google Patents
Mine ecological fragile area slope restoration system and method Download PDFInfo
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- CN114960699A CN114960699A CN202210686205.4A CN202210686205A CN114960699A CN 114960699 A CN114960699 A CN 114960699A CN 202210686205 A CN202210686205 A CN 202210686205A CN 114960699 A CN114960699 A CN 114960699A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000002689 soil Substances 0.000 claims description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 230000012010 growth Effects 0.000 claims description 9
- 230000008439 repair process Effects 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 7
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- 230000014759 maintenance of location Effects 0.000 claims description 3
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- 239000002344 surface layer Substances 0.000 claims description 3
- 235000013311 vegetables Nutrition 0.000 abstract description 3
- 235000016709 nutrition Nutrition 0.000 description 23
- 230000035764 nutrition Effects 0.000 description 21
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
- A01C23/02—Special arrangements for delivering the liquid directly into the soil
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G20/00—Cultivation of turf, lawn or the like; Apparatus or methods therefor
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/50—Growth substrates; Culture media; Apparatus or methods therefor contained within a flexible envelope
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/06—Watering arrangements making use of perforated pipe-lines located in the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/202—Securing of slopes or inclines with flexible securing means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
Abstract
The embodiment of the application provides a mine ecological fragile area side slope restoration system and method, and belongs to the technical field of ecological restoration. The mine ecological fragile area side slope restoration system is used for restoring a mine side slope, the mine side slope is provided with a slope surface, the mine ecological fragile area side slope restoration system comprises a barrier layer, a matrix layer and a vegetable layer, the barrier layer is laid on the outer side of the slope surface, and the barrier layer is used for preventing harmful substances on the mine side slope from seeping out; the matrix layer is laid on the outer side of the barrier layer and contains nutrient substances; the vegetable layer is planted on the matrix layer; the substrate layer is formed by sequentially stacking a plurality of geotechnical bags from bottom to top along the slope, and the geotechnical bags of the substrate layer are filled with improved tailings which are used for providing nutrients for the vegetation layer so as to allow the vegetation layer to grow. The slope restoration system for the mine ecological fragile area can solve the problem of difficulty in slope restoration.
Description
Technical Field
The application relates to the technical field of ecological restoration, in particular to a mine ecological fragile area side slope restoration system and method.
Background
Mining of mineral resources causes serious ecological damage to mine areas. Particularly, for some ecological fragile areas, ecological restoration of a mining area is particularly difficult, and mines in the ecological fragile areas have the characteristics of low vegetation coverage rate, difficulty in self-healing restoration after soil and vegetation are damaged and the like. At present, the slope restoration of a mine mainly faces the following problems that firstly, as the slope of the mine is steep, the traditional soil dressing spray seeding is adopted, and the problems of difficult achievement of spray seeding height, thinner spray thin layer, water and soil loss and the like exist; the potential safety hazard of a steep side slope needs to be eliminated during reclamation, and the slope can be built by adopting backfill materials, but the common mine soil source is very limited, so that large-scale soil taking is difficult to meet the backfill requirement; in addition, the reclamation matrix layer, the nutrition supply layer, the water storage layer and the like in the ecological fragile area are difficult to construct, the existing drip irrigation system is complex, and the condition of frost damage in winter also exists.
Disclosure of Invention
The embodiment of the application provides a mine ecological fragile area side slope restoration system and method, and can solve the problem of difficulty in mine side slope restoration.
The embodiment of the application provides a mine ecological fragile area side slope restoration system, which is used for restoring a mine side slope, wherein the mine side slope is provided with a slope surface, the mine ecological fragile area side slope restoration system comprises a barrier layer, a matrix layer and a vegetation layer, the barrier layer is laid on the outer side of the slope surface, and the barrier layer is used for preventing harmful substances on the mine side slope from seeping out; the substrate layer is laid outside the barrier layer, the substrate layer contains nutrient substances, and the vegetation layer is planted on the substrate layer; the substrate layer is formed by sequentially stacking a plurality of soil engineering bags from bottom to top along the slope direction, and the soil engineering bags of the substrate layer are filled with improved tailings which are used for providing nutrients for the vegetation layer so as to grow the vegetation layer.
In this scheme, because harmful substance such as heavy metal ion and acidic substance are contained in the mine, consequently through be provided with the barrier layer on domatic, the barrier layer can prevent that the harmful substance migration of mine side slope oozes to the matrix layer in to ensure the normal growth of vegetable layer on the matrix layer. More importantly, the matrix layer utilizes the tailings of the mine, the materials are convenient to obtain, the tailings are stacked from bottom to top in a bag type filling mode, the tailings are solidified and stacked in the geotextile bag body, secondary pollution to the surrounding environment is prevented, the problems of dust raising, water and soil loss and the like can be effectively avoided, and a large amount of soil resources required by reclamation are saved. And the stability of the mine side slope is ensured by utilizing the self-stability characteristic of the soil engineering bag. In addition, related water-retaining agents, nutritional agents, organic matters and related modifiers are added into the tailings to obtain improved tailings, the improved tailings are prepared in a soil mode, the improved tailings in the matrix layer can provide sufficient nutrients for long-term growth of the vegetation layer, the problem of soil reconstruction is solved, and the problems that the mine side slope is difficult to repair and the soil source is in short supply are also solved.
In some embodiments, a reinforcing layer is further laid between the barrier layer and the matrix layer, the reinforcing layer is formed by sequentially stacking a plurality of geotextile bags from bottom to top along the slope direction, and the geotextile bags of the reinforcing layer are filled with common tailings.
In the technical scheme, because the slopes of the mine slopes are different, particularly for high and steep slopes, the reinforcing layer is mainly used for reinforcing the mine slopes, and is suitable for high and steep slope restoration operation, the safety storage is high, the reinforcing layer is also used for storing tailings from bottom to top in a bag filling mode, common tailings are solidified and stored in the geotechnical bag body, and the stability of the slope surface of the mine slope is ensured by utilizing the self-stability characteristic of the geotechnical bag.
Wherein, the barrier layer can be one of geomembrane or guniting layer.
In some embodiments, the mine ecological vulnerable area slope restoration system further comprises a nutrient ring pipe assembly disposed around the plurality of geobags of the matrix layer, the nutrient ring pipe assembly for improving the water and fertilizer retention performance of the modified tailings in the matrix layer.
Among the above-mentioned technical scheme, through be provided with nutrition ring canal subassembly in the matrix layer, nutrition ring canal subassembly can be with the material such as moisture, nutrition for the geotechnological bag inboard on matrix layer, has improved the moisture conservation of the intraformational improvement tailing of matrix and has kept fertile performance, provides moisture and nutrition for the long-term growth of plant, has solved nutrition moisture supply problem.
In some embodiments, the feeding ring pipe assembly comprises a ring pipe and a plurality of siphon pipes, the ring pipe is arranged around the plurality of geobags of the matrix layer in a surrounding mode, the ring pipe comprises a plurality of horizontal sections and a plurality of bending sections, the horizontal sections extend along the matrix layer in the horizontal direction of the plurality of geobags on the same layer, and the bending sections extend around the geobags on the upper layer and the lower layer of the matrix layer in the thickness direction; the horizontal sections are arranged at intervals on the plurality of siphon pipes, one end of each siphon pipe is communicated with the inside of the horizontal section, and the other end of each siphon pipe extends into the geotextile bag of the matrix layer.
Among the above-mentioned technical scheme, through the setting of ring canal and siphon, the ring canal is laid around each geotechnological bag in the matrix layer, and the siphon makes the nutrition and the ring canal intercommunication of each geotechnological bag's improvement tailing to through the inside of the slowly release in each geotechnological bag of siphon water absorption mode, provide moisture and nutrition for the long-term growth of plant.
In a second aspect, the embodiment of the application further provides a method for repairing a slope of a mine ecological fragile area, and the method comprises the following steps: s1, firstly, drawing up a repair area of the mine side slope, and paving a barrier layer on the outer surface of the repair area of the side slope; s2, adding a water-retaining agent, a nutrient, an organic matter and a modifier into the common tailings to obtain modified tailings, filling the modified tailings into the geotechnical bags in a bag-type filling mode to obtain a plurality of geotechnical bags, and sequentially stacking the geotechnical bags on one side outside the barrier layer from bottom to top to form a matrix layer; and S3, planting vegetation on the surface layer of the matrix layer to obtain a vegetation layer.
When the vegetation layer is planted, diversified plant seeding (a broadcasting method, a drilling method, a dibbling method and the like can be adopted for herbaceous plants, a root cutting method, a leaf cutting method, a bud cutting method and the like can be adopted for shrub plants) or a turf transplanting method can be carried out on the surface of the geotextile bag, so that the root system of the plant can be located inside the reclaimed geotextile bag, and a thicker permanent vegetation layer is finally formed.
In some embodiments, before step S2, the common tailings are transported to a designated area beside the mine slope, the common tailings are filled in the geotextile bags by a bag filling method to obtain a plurality of geotextile bags, and the geotextile bags are sequentially stacked on one side of the mine slope from bottom to top to form a reinforcing layer of a permanent mold bag to reinforce the mine slope.
In some embodiments, in the S2 step, a feeding loop assembly is provided around the bottom of the geotextile bags of the matrix layer while sequentially stacking a plurality of geotextile bags on one side of the reinforcement layer from the bottom up.
When the nutrition ring pipe assembly is laid, a ring pipe is laid around the bottom of the geotextile bag of the matrix layer, holes are formed in the ring pipe every 5-10m along the length direction of the geotextile bag and connected with capillary siphons, plants absorb water from the matrix layer through root systems of the plants, the water potential is reduced along with the reduction of the water content of the matrix layer, substances such as water, nutrition and the like are supplied to the inner side of the geotextile bag by utilizing the capillary action, the supply balance of the water quantity required by the plants and nutrient solution is maintained, and the water and nutrition are provided for the long-term growth of the plants.
In some embodiments, after the vegetation layer is formed in the step S3, the growth of the vegetation layer is periodically observed, and the water content and PH data of the modified tailings in the matrix layer are measured.
Additional features and advantages of the present application will be described in detail in the detailed description which follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a mine ecological vulnerable area slope restoration system according to some embodiments of the present application;
FIG. 2 is an angled schematic view of the substrate layer of FIG. 1 mated with the feeding collar assembly;
fig. 3 is a schematic view of the structure of fig. 2 at another angle.
Icon: 10-mine side slope; 20-a barrier layer; 30-a reinforcement layer; 40-a matrix layer; 50-vegetable layer; 60-feeding ring canal component; 61-circular pipe; 61 a-horizontal section; 61 b-bend section; 62-siphon tube.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present application, it should be noted that the indication of the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is further noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Examples
The embodiment of the application provides a mine ecological fragile area side slope restoration system, which is used for restoring a mine side slope, wherein the mine side slope 10 has a slope surface, please refer to fig. 1, fig. 2 and fig. 3, the mine ecological fragile area side slope restoration system comprises a barrier layer 20, a matrix layer 40 and a vegetation layer 50, the barrier layer 20 is laid on the outer side of the slope surface, and the barrier layer 20 is used for preventing harmful substances on the mine side slope 10 from seeping out; the matrix layer 40 is laid on the outer side of the barrier layer 20, and the matrix layer 40 contains nutrient substances; the vegetation layer 50 is planted on the matrix layer 40; the matrix layer 40 is formed by sequentially stacking a plurality of geotextile bags from bottom to top along the slope direction, and the geotextile bags of the matrix layer 40 are filled with improved tailings which are used for providing nutrients for the vegetation layer 50 so as to allow the vegetation layer 50 to grow.
In this embodiment, since the mine contains harmful substances such as heavy metal ions and acidic substances, the barrier layer 20 is provided on the slope surface, so that the barrier layer 20 can prevent the harmful substances on the mine slope 10 from migrating and seeping into the matrix layer 40, thereby ensuring the normal growth of the vegetation layer 50 on the matrix layer 40. More importantly, the matrix layer 40 utilizes the tailings of the mine, the materials are convenient to obtain, the tailings are stacked from bottom to top in a bag type filling mode, the tailings are solidified and stacked in the geotextile bag body, secondary pollution to the surrounding environment is prevented, the problems of dust raising, water and soil loss and the like can be effectively avoided, and a large amount of soil resources required by reclamation are saved. And the stability of the mine slope 10 is ensured by utilizing the self-stability characteristic of the earth work bag. In addition, related water-retaining agents, nutritional agents, organic matters and related modifiers are added into the tailings to obtain improved tailings, the improved tailings are prepared into soil, the improved tailings in the matrix layer 40 can provide sufficient nutrients for long-term growth of the vegetation layer 50, the problem of soil reconstruction is solved, and the problems that the mine side slope 10 is difficult to repair and the soil source is in short supply are also solved.
In some embodiments, a reinforcing layer 30 is further laid between the barrier layer 20 and the matrix layer 40, the reinforcing layer 30 is formed by sequentially stacking a plurality of geotextile bags from bottom to top along the slope direction, and the geotextile bags of the reinforcing layer 30 are filled with common tailings. Because the slopes of the mine side slopes 10 are different, particularly for high and steep slopes, the reinforcing layer 30 is mainly used for reinforcing the mine side slopes 10 and is applicable to the high and steep slopes, the safety storage is high, common tailings are similarly stacked from bottom to top in a bag filling mode and are solidified and stacked inside the geotextile bag body, and the stability of the mine side slopes 10 is ensured by utilizing the self-stability characteristic of the geotextile bag, so that the reinforcing layer 30 is very suitable for repairing the high slopes.
Wherein the barrier layer 20 may be one of a geomembrane or a gunite.
Optionally, when the barrier layer 20 is made of a geomembrane, the geomembrane is easy to purchase, low in cost and convenient to lay on a side slope. The geomembrane is a geomembrane anti-seepage material compounded by a plastic film serving as an anti-seepage base material and non-woven fabrics, and the anti-seepage performance of the novel material geomembrane mainly depends on the anti-seepage performance of the plastic film.
Alternatively, the barrier layer 20 is provided as a gunite layer, and it is understood that the gunite layer is a layer of cement slurry laid on the outer surface of the mine slope 10, and harmful substances of the mine slope can be prevented from penetrating into the matrix layer 40 by the gunite layer. In addition, the guniting thickness of the guniting layer can be 3cm-5 cm.
In some embodiments, the slope restoration system for the mine ecological vulnerable area further comprises a nutrient ring pipe assembly 60, wherein the nutrient ring pipe assembly 60 is arranged around the plurality of geobags of the matrix layer 40, and the nutrient ring pipe assembly 60 is used for improving the water and fertilizer retention performance of the improved tailings in the matrix layer 40. Through being provided with nutrition ring canal subassembly 60 in matrix layer 40, nutrition ring canal subassembly 60 can supply material such as moisture, nutrition in the geotechnical bag inboard of matrix layer 40, has improved the water conservation of the improvement tailing in matrix layer 40 and has kept fertile performance, provides moisture and nutrition for the long-term growth of plant, has solved nutrition moisture supply problem.
In some embodiments, referring to fig. 2 and 3, the feeding loop assembly 60 includes a loop 61 and a plurality of siphon pipes 62, the loop 61 is disposed around a plurality of geobags of the substrate layer 40, the loop 61 includes a plurality of horizontal sections 61a and a plurality of bending sections 61b, the horizontal sections 61a extend along the substrate layer 40 in a horizontal direction of the plurality of geobags on the same layer, and the bending sections 61b extend around geobags on upper and lower adjacent layers of the substrate layer 40 in a thickness direction; the plurality of siphon pipes 62 are provided with horizontal sections 61a at intervals, one end of the siphon pipe 62 is communicated with the inside of the horizontal section 61a, and the other end of the siphon pipe 62 extends into the geotextile bag of the matrix layer 40.
Through the arrangement of the ring pipe 61 and the siphon pipe 62, the ring pipe 61 is laid around each geobag in the matrix layer 40, and the siphon pipe 62 enables the nutrition of the improved tailings of each geobag to be communicated with the ring pipe 61 and slowly released into the inner part of each geobag in an siphon water absorption mode, so that moisture and nutrition are provided for the long-term growth of plants.
The arrangement interval of the siphon 62 in the horizontal section 61a can be set according to the size of the geobags, and the arrangement interval of the siphon 62 can be ensured to match the length of the geobags as much as possible, so that each geobag in each matrix layer 40 can be communicated with the loop 61 through the siphon 62.
In a second aspect, the embodiment of the application further provides a method for repairing a slope of a mine ecological fragile area, and the method comprises the following steps: s1, firstly, drawing up a repair area of the mine side slope 10, and paving a barrier layer 20 on the outer surface of the repair area of the side slope; s2, adding a water-retaining agent, a nutrient, an organic matter and a modifier into the common tailings to obtain modified tailings, filling the modified tailings into the soil engineering bags in a bag filling mode to obtain a plurality of soil engineering bags, and sequentially piling the soil engineering bags on one side outside the barrier layer 20 from bottom to top to form a matrix layer 40; s3, planting vegetation on the surface layer of the matrix layer 40 to obtain the vegetation layer 50.
When the vegetation layer 50 is planted, diversified plant seeding (a broadcasting method, a drilling method, a dibbling method and the like can be adopted for herbaceous plants, a root cutting method, a leaf cutting method, a bud cutting method and the like can be adopted for shrub plants) or a turf transplanting method can be carried out on the surface of the geotextile bag, so that the root system of the plant can be located inside the reclaimed geotextile bag, and the thicker permanent vegetation layer 50 is finally formed.
In some embodiments, before step S2, the common tailings are transported to a designated area beside the mine side slope 10, the common tailings are filled in the geotextile bags by a bag filling method to obtain a plurality of geotextile bags, and the geotextile bags are sequentially stacked on one side of the mine side slope from bottom to top to form the reinforcement layer 30 of the permanent mold bag to reinforce the mine side slope.
In some embodiments, in the step S2, when the plurality of geobags are laid down from the bottom of the substrate layer 40, the feeding collar assembly 60 is disposed around the bottom of the geobags of the substrate layer 40.
When the nutrition ring pipe assembly 60 is laid, a ring pipe 61 is laid around the bottom of the geotextile bag of the matrix layer 40, capillary siphons 62 are connected to the ring pipe 61 through holes formed in the ring pipe 61 every 5-10m along the length direction of the geotextile bag, plants absorb water from the matrix layer 40 through root systems of the plants when growing, water potential is reduced along with reduction of the water content of the matrix layer 40, substances such as water, nutrition and the like are supplied to the inner side of the geotextile bag by utilizing capillary action, the supply balance of water quantity required by the plants and nutrient solution is maintained, and water and nutrition are provided for long-term growth of the plants.
In some embodiments, after the vegetation layer 50 is formed in the S3 step, the growth of the vegetation layer 50 is periodically observed, and the water content and PH data of the modified tailings in the matrix layer 40 are measured.
It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a slope repair system in ecological fragile district of mine for restore the mine side slope, the mine side slope has domatic, a serial communication port, includes:
the barrier layer is laid on the outer side of the slope surface and used for preventing harmful substances on the mine side slope from seeping out;
the substrate layer is laid on the outer side of the barrier layer and contains nutrient substances;
a vegetation layer planted on the matrix layer;
the substrate layer is formed by sequentially stacking a plurality of geotextile bags from bottom to top along the slope direction, improved tailings are filled in the geotextile bags of the substrate layer, and the improved tailings are used for providing nutrients for the vegetation layer to grow.
2. The mine ecological vulnerable area side slope restoration system according to claim 1, wherein a reinforcing layer is further laid between the barrier layer and the matrix layer, the reinforcing layer is formed by sequentially stacking a plurality of geotextile bags from bottom to top along the slope direction, and the geotextile bags of the reinforcing layer are filled with common tailings.
3. The mine ecology fragile zone side slope restoration system of claim 1 wherein the barrier layer is provided as a geomembrane.
4. The mine ecology fragile zone side slope restoration system of claim 1 wherein the barrier layer is provided as a gunite layer.
5. The mine ecological vulnerable area side slope restoration system according to claim 1, further comprising:
and the nutrient ring pipe assembly is arranged around the plurality of soil engineering bags of the matrix layer and is used for improving the water and fertilizer retention performance of the improved tailings in the matrix layer.
6. The mine ecology fragile zone side slope restoration system of claim 5, wherein the nutrient grommet assembly comprises:
the circular pipe is arranged around the plurality of the geotextile bags of the matrix layer in a surrounding manner, and comprises a plurality of horizontal sections and a plurality of bent sections, the horizontal sections extend along the matrix layer in the horizontal direction of the plurality of geotextile bags on the same layer, and the bent sections extend around the geotextile bags on the upper and lower adjacent layers of the matrix layer in the thickness direction;
the horizontal sections are arranged at intervals, one ends of the siphons are communicated with the inside of the horizontal sections, and the other ends of the siphons extend into the geotextile bags of the matrix layers.
7. A method for a mine ecological fragile area slope restoration system is characterized by comprising the following steps:
s1, firstly, drawing up a repair area of the mine side slope, and paving a barrier layer on the outer surface of the repair area of the side slope;
s2, adding a water-retaining agent, a nutrient, an organic matter and a modifier into the common tailings to obtain modified tailings, filling the modified tailings into the geotechnical bags in a bag-type filling mode to obtain a plurality of geotechnical bags, and sequentially stacking the geotechnical bags outside the barrier layer from bottom to top to form a matrix layer;
s3: and planting vegetation on the surface layer of the matrix layer to obtain a vegetation layer.
8. The method for repairing a slope in an ecologically vulnerable area of a mine as set forth in claim 7, wherein prior to the step S2, the general tailings are transported to a designated area beside the mine slope, the general tailings are filled in the geotextile bags by bag filling to obtain a plurality of geotextile bags, and the geotextile bags are sequentially stacked on one side of the mine slope from bottom to top to form a reinforcement layer of the permanent geotextile bags for reinforcing the mine slope.
9. The method for mine ecology fragile area slope restoration system according to claim 8, wherein in the step of S2, a feeding ring pipe assembly is provided around the bottom of the geotextile bags of the matrix layer while the matrix layer is laid down from bottom to top.
10. The method for repairing a slope in an ecological vulnerable area of a mine according to claim 7, wherein after the vegetation layer is formed in the step of S3, the growth of the vegetation layer is periodically observed, and the water content and pH value data of the modified tailings in the matrix layer are measured.
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