CN116369152A - Artificial soil prepared based on waste stone waste slag for plateau tunnel construction and preparation method thereof - Google Patents
Artificial soil prepared based on waste stone waste slag for plateau tunnel construction and preparation method thereof Download PDFInfo
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- 239000002699 waste material Substances 0.000 title claims abstract description 105
- 239000002689 soil Substances 0.000 title claims abstract description 95
- 238000010276 construction Methods 0.000 title claims abstract description 77
- 239000002893 slag Substances 0.000 title claims abstract description 76
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000004575 stone Substances 0.000 title claims description 23
- 239000010802 sludge Substances 0.000 claims abstract description 64
- 239000010878 waste rock Substances 0.000 claims abstract description 45
- 210000003608 fece Anatomy 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims abstract description 22
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 18
- 241000881860 Paenibacillus mucilaginosus Species 0.000 claims abstract description 17
- 241000223260 Trichoderma harzianum Species 0.000 claims abstract description 17
- 239000007633 bacillus mucilaginosus Substances 0.000 claims abstract description 17
- 230000000813 microbial effect Effects 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 14
- 238000005507 spraying Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 23
- 239000002054 inoculum Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 13
- 241000589151 Azotobacter Species 0.000 claims description 11
- 241001219477 Chroococcus Species 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 8
- 238000007605 air drying Methods 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 241000589152 Azotobacter chroococcum Species 0.000 abstract description 6
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- 230000035558 fertility Effects 0.000 abstract description 2
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Classifications
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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
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
-
- 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
-
- 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
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
-
- 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
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
-
- 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
- A01G24/30—Growth substrates; Culture media; Apparatus or methods therefor based on or containing synthetic organic compounds
- A01G24/35—Growth substrates; Culture media; Apparatus or methods therefor based on or containing synthetic organic compounds containing water-absorbing polymers
Abstract
The invention discloses artificial soil prepared based on waste rock waste slag in plateau tunnel construction and a preparation method thereof, and belongs to the technical field of ecological restoration in plateau areas. The artificial soil prepared based on the waste rock waste slag for the plateau tunnel construction comprises, by weight, 700-800 parts of waste rock waste slag for the plateau tunnel construction, 150-200 parts of pretreated sludge, 50-100 parts of dry yak dung, 4-9 parts of plateau plants, 1 part of polyacrylamide, 1 part of sodium polyacrylate, 0.12 part of microbial agent, 0.04 part of azotobacter chroococcum agent, 0.04 part of trichoderma harzianum agent and 0.04 part of bacillus mucilaginosus agent. The raw materials used for preparing the artificial soil are mostly from a project area and the vicinity of the project area of the plateau tunnel construction, so that the idea of treating waste by waste is reflected, and the prepared artificial soil has sufficient fertility, sufficient water and fertilizer retention and sufficient porosity, so that the waste residue pile can be directly covered by the soil in a spraying manner, and the aim of ecological restoration is fulfilled.
Description
Technical Field
The invention relates to artificial soil prepared based on waste rock waste slag in plateau tunnel construction and a preparation method thereof, and belongs to the technical field of ecological restoration in plateau areas.
Background
The alpine shrub meadow area in the plateau area is restricted by environments such as high land form, strong sunlight, wind power, low air temperature and the like, the ecological environment is relatively fragile, and in the plateau railway construction process, a large amount of waste slag can be generated due to the problems of tunnel excavation and the like, the concentrated stacking of the waste slag can bring about larger negative influence on the local environment, and rapid deterioration of the ecological environment is very easy to cause. In order to treat the deposited waste slag and minimize the influence caused by the deposited waste slag, the ecological development of the negatively affected area is aimed at the direction of vegetation health, complete functions, landscape coordination and sustainability on the premise of combining manual restoration with natural restoration measures.
At present, the ecological restoration method for the waste slag pile mainly comprises methods of surface soil backfilling, foreign soil covering and the like. Aiming at the soil-alien covering method, the current full-ball land resources are tense, most areas are in bad state, and meanwhile, a large amount of soil resources are occupied and sealed in high-speed urban mode, so that the ecological environment of the soil is damaged when the soil-alien is used in a large amount, the water-retaining and fertilizer-retaining capacity of the restored soil is weak, meanwhile, the problems of water and soil loss and the like exist, and new soil-alien needs to be paved periodically every year. Therefore, the invention provides a novel artificial soil for soil dressing.
Disclosure of Invention
In order to solve the technical problems, the invention provides artificial soil prepared based on waste stone waste slag in plateau tunnel construction and a preparation method thereof, wherein the preparation raw materials are easy to obtain, and ecological damage to other areas due to soil transfer can be avoided while the aim of ecological restoration of waste slag piles in plateau tunnel construction project areas is fulfilled.
In order to achieve the above object, the present invention provides the following solutions:
one of the technical schemes of the invention is as follows:
the artificial soil prepared based on the waste rock waste slag for the plateau tunnel construction comprises the following raw materials in parts by weight:
700-800 parts of waste rock waste slag for plateau tunnel construction, 150-200 parts of pretreated sludge, 50-100 parts of dry yak dung, 4-9 parts of plateau plants, 1 part of polyacrylamide, 1 part of sodium polyacrylate and 0.12 part of microbial agent.
Further, the diameter of the waste rock waste slag for the plateau tunnel construction is 0.5-2mm, the waste rock waste slag has a larger specific surface area, the structural stability of artificial soil can be kept, and water and soil loss is prevented.
Further, the pretreated sludge is obtained by air-drying the sludge until the water content is 40% -60%, mixing and fermenting the sludge and plant branches and leaves according to the weight ratio of 6:1, and the obtained sludge has no obvious malodor and stable nutrients, can provide nutrients for artificial soil to a certain extent, and has certain water-retaining property and fertilizer-retaining property.
Further, the diameter of the dry yak manure is 0.5-2mm, and the dry yak manure has certain nutrition and can be used as a slow release fertilizer to provide nutrition for plants planted on artificial soil.
Further, the plateau plants are crushed and used, the crushed plateau plants with the particle size of 0.5-10mm are plants around the plateau tunnel construction project, and the crushed plateau plants are used together with sodium polyacrylate and polyacrylamide, so that the water retention of soil can be enhanced, the structure of the soil can be improved, and the soil has certain porosity. In principle, unless otherwise specified, the type of the plateau plant is not limited, and any plant may be used as long as it grows around the construction site.
Further, the microbial agent comprises, by weight, 0.04 part of azotobacter chroococcus, 0.04 part of trichoderma harzianum and 0.04 part of bacillus mucilaginosus, and can promote slow decomposition of the rock surface layer, promote slow release of mineral nutrients in the rock, supply plant growth, and provide nutrient functions per se.
The second technical scheme of the invention is as follows:
the preparation method of the artificial soil prepared based on the waste rock waste slag of the plateau tunnel construction comprises the following steps:
(1) Weighing the raw materials according to parts by weight, and mixing the waste stone waste slag, the pretreated sludge, the dry yak dung and the plateau plants to obtain a mixture;
(2) Adding the acrylamide and the sodium polyacrylate into the mixture obtained in the step (1), uniformly stirring, and then adding the microbial agent to obtain an artificial soil primary mixed material;
(3) And adding water into the artificial soil primary mixed material until the artificial soil primary mixed material is saturated, namely, water permeates out of the primary mixed material, and curing to obtain the artificial soil prepared based on the waste rock waste slag of the plateau tunnel construction.
Further, the curing time is 24 hours.
The third technical scheme of the invention:
the artificial soil prepared based on the waste stone waste slag of the plateau tunnel construction is applied to the ecological environment restoration of the waste slag pile, and the waste slag pile is covered by the foreign soil in a spray seeding mode.
The invention discloses the following technical effects:
(1) The prepared artificial soil has sufficient fertility by adding the pretreated sludge and the dry yak manure, and the water retention capacity of the artificial soil is enhanced and the structure of the artificial soil is improved by the combined action of the high polymer resin polyacrylamide and the sodium polyacrylate, so that the artificial soil has sufficient water retention and fertilizer retention property and sufficient porosity, and the waste slag piles can be directly covered by soil covering in a spraying manner, so that the aim of ecological restoration is fulfilled.
(2) The raw materials used for preparing the artificial soil are mostly from a project area and the vicinity of the project area of the plateau tunnel construction, and comprise waste rock waste slag, yak dung and the like generated in the project area due to the tunnel, wherein the production amount of the waste rock waste slag in the tunnel construction is maximum, the occupied area is wide, and the land resources are wasted.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application, illustrate and explain the application and are not to be construed as limiting the application. In the drawings:
FIG. 1 shows the waste rock residue for constructing the plateau tunnel, which is prepared in example 1 of the present invention;
FIG. 2 shows pretreated sludge produced in example 1 of the present invention;
FIG. 3 is a dried yak dung prepared in example 1 of the present invention;
FIG. 4 shows pasture produced in example 1 of the present invention;
FIG. 5 shows a highland rhododendron prepared in example 1 of the present invention;
FIG. 6 is a graph showing the results of measurement of the water retention capacity of artificial soil prepared in examples 1 to 5 of the present invention;
FIG. 7 is a graph showing the results of planting the plants Poa pratensis, althaea lancea and Taraxacum officinale using the artificial soil prepared in example 1.
Detailed Description
Various exemplary embodiments of the invention will now be described in detail, which should not be considered as limiting the invention, but rather as more detailed descriptions of certain aspects, features and embodiments of the invention.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In addition, for numerical ranges in this disclosure, it is understood that each intermediate value between the upper and lower limits of the ranges is also specifically disclosed. Every smaller range between any stated value or stated range, and any other stated value or intermediate value within the stated range, is also encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the invention described herein without departing from the scope or spirit of the invention. Other embodiments will be apparent to those skilled in the art from consideration of the specification of the present invention. The specification and examples of the present invention are exemplary only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are intended to be inclusive and mean an inclusion, but not limited to.
In the embodiment of the invention, the parts are parts by weight unless specified otherwise.
The invention provides artificial soil prepared from waste rock waste slag based on plateau tunnel construction, which comprises the following raw materials in parts by weight:
700-800 parts of waste rock waste slag for plateau tunnel construction, 150-200 parts of pretreated sludge, 50-100 parts of dry yak dung, 4-9 parts of plateau plants, 1 part of polyacrylamide, 1 part of sodium polyacrylate and 0.12 part of microbial agent.
Further, the diameter of the waste rock waste slag for plateau tunnel construction is 0.5-2mm, in the embodiment of the invention, the waste rock waste slag for engineering generated by tunnel construction near the multi-mountain of the Sichuan-Tibetan line in the plateau area is collected, crushed and screened to obtain the waste rock waste slag for plateau tunnel construction with the diameter of 0.5-2mm, which has larger specific surface area, can keep the structure stability of artificial soil, prevent water and soil loss, and has smaller particle diameter, larger specific surface area and full use of crushed raw materials while guaranteeing the water holding capacity of the artificial soil.
In the embodiment of the invention, the source of the pretreated sludge is a sewage treatment plant in Kangding city, the pretreated sludge is air-dried until the water content is 40% -60%, the pretreated sludge is mixed with plant dead branches and fallen leaves according to the weight ratio of 6:1, and the pretreated sludge is obtained by composting and fermenting for two to three weeks at a ventilation place, so that the obtained sludge has no obvious malodor and is stable in nutrient, and the pretreated sludge can provide nutrients for artificial soil to a certain extent and has certain water-retaining property and fertilizer-retaining property. The variety of the plant branches and leaves in the examples is not limited unless otherwise specified.
In the embodiment of the invention, the diameter of the dry yak dung is 0.5-2mm, the dry yak dung in a grassland or farmland near a tunnel construction project area near the Chuancangduoshan in a plateau area is collected, crushed and screened to obtain the dry yak dung with the diameter of 0.5-2mm, and the dry yak dung has certain nutrition and can be used as a slow release fertilizer to provide nutrition for plants planted on artificial soil.
Further, the grain size of the plateau plants is 0.5-10mm, in the embodiment of the invention, the plants around the tunnel construction project area near the Sichuan-Tibetan-Xieduoshan in the plateau area are collected and crushed to obtain the plateau plants with the grain size of 0.5-10mm, and the plateau plants are used together with sodium polyacrylate and polyacrylamide to enhance the water retention of soil and improve the structure of the soil so that the soil has a certain porosity.
Further, the microbial agent comprises, by weight, 0.04 part of azotobacter chroococcus, 0.04 part of trichoderma harzianum and 0.04 part of bacillus mucilaginosus, and can promote slow decomposition of the rock surface layer, promote slow release of mineral nutrients in the rock, supply plant growth, and provide nutrient functions per se.
The invention also provides a preparation method of the artificial soil prepared based on the waste stone waste slag for the plateau tunnel construction, which comprises the following steps:
(1) Weighing the raw materials according to parts by weight, and mixing the waste stone waste slag, the pretreated sludge, the dry yak dung and the plateau plants to obtain a mixture;
(2) Adding the acrylamide and the sodium polyacrylate into the mixture obtained in the step (1), uniformly stirring, and then adding the microbial agent to obtain an artificial soil primary mixed material;
(3) And (3) adding water into the artificial soil primary mixed material until the artificial soil primary mixed material is saturated (namely, water permeates out of the primary mixed material), and curing to obtain the artificial soil prepared based on the waste rock waste slag of the plateau tunnel construction.
In the embodiment of the invention, the maintenance time is 24 hours.
In the embodiment of the invention, the polyacrylamide is analytically pure, purchased from Tianjin Fuchen corporation, the sodium polyacrylate is analytically pure, purchased from Tianjin Korea corporation, the azotobacter chroococcus agent is purchased from Nanjiaer Biotechnology Co., ltd., the model is 25kg of farm-oriented, the trichoderma harzianum agent is purchased from Chengdu Biotechnology Co., ltd., the model is 500g of farm-oriented, the bacillus mucilaginosus agent is purchased from Wobao Biotechnology Co., the model is 1kg of farm-oriented, and in the process of preparing artificial soil, the azotobacter chroococcus agent, the trichoderma harzianum agent and the bacillus mucilaginosus agent are required to be applied according to the specification according to the mass ratio of 1:200 (in the specification, the azotobacter chroococcus is required to be diluted to 150-200 times and applied, trichoderma harzianum is diluted to 200 times and applied, and bacillus mucilaginosus only requires the application quality, so that the mass ratio is 1:200).
The waste rock waste slag for the construction of the plateau tunnel used in the embodiment of the invention comes from the Sichuan railway, and in the construction process of a new positive line with the length of 1011km of the Sichuan railway, the Sichuan railway is expected to generate 2.4 hundred million square meters of waste rock waste slag, and the waste slag pile occupies a large area, thereby influencing the construction of a site road of about 1800 km and a station of hundreds of sites on the ground.
The technical scheme of the invention is further described by the following examples.
Example 1
(1) Preparation of raw materials
Collecting engineering waste rock waste slag generated by tunnel construction near the Sichuan and Tibetan line-folded mountains in the plateau area, crushing and sieving to obtain the plateau tunnel construction waste rock waste slag with the diameter of 2mm, wherein the figure 1 is shown;
collecting sludge of a sewage treatment plant in Kangding city, wherein the collected sludge is municipal sludge with the water content of 70% -80%, air-drying the sludge until the water content is 50%, mixing the sludge with plant branches and leaves according to the weight ratio of 6:1, and composting and fermenting for two weeks to obtain pretreated sludge, as shown in figure 2;
collecting dry yak dung of grasslands or farmlands near tunnel construction project areas near the Sichuan Tibetan line book mountains in the plateau area, crushing and sieving to obtain dry yak dung with the diameter of 2mm, as shown in figure 3;
pasture around a tunnel construction project area near the Sichuan Tibetan line book mountains in the plateau area is collected and crushed to obtain pasture with the diameter of 2mm, as shown in fig. 4;
(2) 750 parts of waste rock waste slag for tunnel construction of a plateau, 175 parts of pretreated sludge, 75 parts of dry yak dung, 4 parts of pasture, 1 part of polyacrylamide, 1 part of sodium polyacrylate, 0.04 part of azotobacter chroococcum, 0.04 part of trichoderma harzianum and 0.04 part of bacillus mucilaginosus;
(3) Preparation of artificial soil
Mixing waste stone waste slag, pretreated sludge, dry yak dung and pasture for constructing a plateau tunnel to obtain a mixture; adding acrylamide and sodium polyacrylate into the obtained mixture, uniformly stirring, and adding water into the microbial inoculant azotobacter chroococcus, the trichoderma harzianum inoculant and the bacillus mucilaginosus inoculant according to the specified mass, and uniformly stirring to obtain an artificial soil primary mixed material; and (3) adding water into the artificial soil primary mixed material to saturate, and curing for 24 hours to obtain the artificial soil prepared based on the waste stone waste slag of the plateau tunnel construction.
Example 2
(1) Preparation of raw materials
Collecting engineering waste rock waste slag generated by tunnel construction near the Sichuan-Tibetan line-folded multi-mountain in a plateau area, crushing and sieving to obtain the plateau tunnel construction waste rock waste slag with the diameter of 2 mm;
collecting sludge of a sewage treatment plant in Kangding city, wherein the collected sludge is municipal sludge with the water content of 70% -80%, air-drying the sludge until the water content is 60%, mixing the sludge with plant branches and leaves according to the weight ratio of 6:1, and composting and fermenting for two weeks to obtain pretreated sludge;
collecting dry yak dung of grasslands or farmlands near tunnel construction project areas near the Sichuan Tibetan line Boduo mountain in a plateau area, crushing and sieving to obtain dry yak dung with the diameter of 2 mm;
pasture around a tunnel construction project area near the Sichuan Tibetan line book multi-mountain in the plateau area is collected and crushed to obtain pasture with the diameter of 2 mm;
(2) 700 parts of waste rock waste slag for tunnel construction on a plateau, 200 parts of pretreated sludge, 100 parts of dried yak dung, 4 parts of pasture, 1 part of polyacrylamide, 1 part of sodium polyacrylate, 0.04 part of azotobacter chroococcum, 0.04 part of trichoderma harzianum and 0.04 part of bacillus mucilaginosus;
(3) Preparation of artificial soil
Mixing waste stone waste slag, pretreated sludge, dry yak dung and pasture for constructing a plateau tunnel to obtain a mixture; adding acrylamide and sodium polyacrylate into the obtained mixture, uniformly stirring, and adding water into the microbial inoculant azotobacter chroococcus, the trichoderma harzianum inoculant and the bacillus mucilaginosus inoculant according to the specified mass, and uniformly stirring to obtain an artificial soil primary mixed material; and (3) adding water into the artificial soil primary mixed material to saturate, and curing for 24 hours to obtain the artificial soil prepared based on the waste stone waste slag of the plateau tunnel construction.
Example 3
(1) Preparation of raw materials
Collecting engineering waste rock waste slag generated by tunnel construction near the Sichuan-Tibetan line-folded multi-mountain in a plateau area, crushing and sieving to obtain the plateau tunnel construction waste rock waste slag with the diameter of 1 mm;
collecting sludge of a sewage treatment plant in Kangding city, wherein the collected sludge is municipal sludge with the water content of 70% -80%, air-drying the sludge until the water content is 55%, mixing the sludge with plant branches and leaves according to the weight ratio of 6:1, and composting and fermenting for two weeks to obtain pretreated sludge;
collecting dry yak dung of grasslands or farmlands near tunnel construction project areas near the Sichuan Tibetan line Boduo mountain in a plateau area, crushing and sieving to obtain dry yak dung with the diameter of 2 mm;
pasture around a tunnel construction project area near the Sichuan Tibetan line book multi-mountain in the plateau area is collected and crushed to obtain pasture with the diameter of 2 mm;
(2) Weighing 775 parts of waste rock waste slag for plateau tunnel construction, 150 parts of pretreated sludge, 75 parts of dry yak dung, 9 parts of pasture, 1 part of polyacrylamide, 1 part of sodium polyacrylate, 0.04 part of azotobacter chroococcum, 0.04 part of trichoderma harzianum and 0.04 part of bacillus mucilaginosus;
(3) Preparation of artificial soil
Mixing waste stone waste slag, pretreated sludge, dry yak dung and pasture for constructing a plateau tunnel to obtain a mixture; adding acrylamide and sodium polyacrylate into the obtained mixture, uniformly stirring, and adding water into the microbial inoculant azotobacter chroococcus, the trichoderma harzianum inoculant and the bacillus mucilaginosus inoculant according to the specified mass, and uniformly stirring to obtain an artificial soil primary mixed material; and (3) adding water into the artificial soil primary mixed material to saturate, and curing for 24 hours to obtain the artificial soil prepared based on the waste stone waste slag of the plateau tunnel construction.
Example 4
(1) Preparation of raw materials
Collecting engineering waste rock waste slag generated by tunnel construction near the Sichuan-Tibetan-line-folded multi-mountain in a plateau area, crushing and sieving to obtain the plateau tunnel construction waste rock waste slag with the diameter of 0.5 mm;
collecting sludge of a sewage treatment plant in Kangding city, wherein the collected sludge is municipal sludge with the water content of 70-80%, air-drying the sludge until the water content is 60%, mixing the sludge with plant branches and leaves according to the weight ratio of 6:1, and composting and fermenting for three weeks to obtain pretreated sludge;
collecting dry yak dung of grasslands or farmlands near tunnel construction project areas near the Sichuan Tibetan line Boduo mountain in a plateau area, crushing and sieving to obtain dry yak dung with the diameter of 1 mm;
collecting and crushing the highland azalea around the tunnel construction project area near the Sichuan Tibetan line Duoshan in the highland area to obtain the highland azalea with the diameter of 0.5mm, as shown in figure 5;
(2) Weighing 800 parts of waste rock waste slag for plateau tunnel construction, 150 parts of pretreated sludge, 50 parts of dry yak dung, 4 parts of plateau rhododendron, 1 part of polyacrylamide, 1 part of sodium polyacrylate, 0.04 part of azotobacter chroococcum, 0.04 part of trichoderma harzianum and 0.04 part of bacillus mucilaginosus;
(3) Preparation of artificial soil
Mixing the waste stone waste slag, the pretreated sludge, the dry yak dung and the highland rhododendron to obtain a mixture; adding acrylamide and sodium polyacrylate into the obtained mixture, uniformly stirring, and adding water into the microbial inoculant azotobacter chroococcus, the trichoderma harzianum inoculant and the bacillus mucilaginosus inoculant according to the specified mass, and uniformly stirring to obtain an artificial soil primary mixed material; and (3) adding water into the artificial soil primary mixed material to saturate, and curing for 24 hours to obtain the artificial soil prepared based on the waste stone waste slag of the plateau tunnel construction.
Example 5
(1) Preparation of raw materials
Collecting engineering waste rock waste slag generated by tunnel construction near the Sichuan-Tibetan line-folded multi-mountain in a plateau area, crushing and sieving to obtain the plateau tunnel construction waste rock waste slag with the diameter of 1 mm;
collecting sludge of a sewage treatment plant in Kangding city, wherein the collected sludge is municipal sludge with the water content of 70-80%, air-drying the sludge until the water content is 50%, mixing the sludge with plant branches and leaves according to the weight ratio of 6:1, and composting and fermenting for three weeks to obtain pretreated sludge;
collecting dry yak dung of grasslands or farmlands near tunnel construction project areas near the Sichuan Tibetan line Boduo mountain in a plateau area, crushing and sieving to obtain dry yak dung with the diameter of 0.5 mm;
collecting and crushing the highland azalea around the tunnel construction project area around the Sichuan Tibetan line Duoshan in the highland area to obtain the highland azalea with the diameter of 10 mm;
(2) 750 parts of waste rock waste slag for plateau tunnel construction, 200 parts of pretreated sludge, 50 parts of dry yak dung, 5 parts of rhododendron, 1 part of polyacrylamide, 1 part of sodium polyacrylate, 0.04 part of azotobacter chroococcum, 0.04 part of trichoderma harzianum and 0.04 part of bacillus mucilaginosus;
(3) Preparation of artificial soil
Mixing the waste stone waste slag, the pretreated sludge, the dry yak dung and the highland rhododendron to obtain a mixture; adding acrylamide and sodium polyacrylate into the obtained mixture, uniformly stirring, and adding water into the microbial inoculant azotobacter chroococcus, the trichoderma harzianum inoculant and the bacillus mucilaginosus inoculant according to the specified mass, and uniformly stirring to obtain an artificial soil primary mixed material; and (3) adding water into the artificial soil primary mixed material to saturate, and curing for 24 hours to obtain the artificial soil prepared based on the waste stone waste slag of the plateau tunnel construction.
Comparative example 1
The same as in example 1 is only different in that 850 parts of waste stone waste slag for tunnel construction on a plateau, 105 parts of pretreated sludge and 45 parts of dry yak dung are weighed according to parts by weight.
Comparative example 2
The same as in example 1 is only different in that 700 parts of waste rock waste slag for tunnel construction on a plateau, 140 parts of pretreated sludge and 60 parts of dry yak dung are weighed according to parts by weight.
Comparative example 3
The difference from example 1 was that the amount of polyacrylamide added was 0.5 parts and the amount of sodium polyacrylate added was 2 parts.
Comparative example 4
The only difference from example 1 is that the weight of the plateau plant grass or the like is replaced with spruce chips.
Performance testing
The nutrient and conductivity of the artificial soil prepared in examples 1 to 5 and comparative examples 1 to 4 after 24 hours of maintenance were measured, and the results are shown in Table 1.
Table 1 results of determination of nutrient and conductivity of artificial soil
As can be seen from Table 1, the artificial soil prepared in examples 1-5 of the present invention contains abundant nutrients, has a suitable pH and conductivity, and is suitable for plant growth in plateau areas.
The water retention capacity of the artificial soil prepared by the embodiment of the invention still has certain water content and good water retention property when the water retention capacity is tested by continuously observing the change of the water in the soil, and the result is shown in fig. 6, and the result can be seen from fig. 6.
The artificial soil prepared in example 1 was used to plant the plants of bluegrass, elymus-cape and dandelion near the tunnel construction project area near the Tibetan line rue mountain, 10 seeds of each plant were taken, mixed and directly sown on the flowerpot filled with the artificial soil, 30 planting tests were performed, in order to simulate the actual application situation, the sowing mode was mixed sowing, the planting result is shown in fig. 7, the germination rate of the sown bluegrass and elymus-cape reaches more than 90%, and the dandelion reaches 30%.
The foregoing is merely a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present application should be covered in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. The artificial soil prepared based on the waste rock waste slag for the plateau tunnel construction is characterized by comprising the following raw materials in parts by weight:
700-800 parts of waste rock waste slag for plateau tunnel construction, 150-200 parts of pretreated sludge, 50-100 parts of dry yak dung, 4-9 parts of plateau plants, 1 part of polyacrylamide, 1 part of sodium polyacrylate and 0.12 part of microbial agent.
2. The artificial soil formulated based on the highland tunnel construction waste rock waste slag of claim 1, wherein the diameter of the highland tunnel construction waste rock waste slag is 0.5-2mm.
3. The artificial soil prepared based on the waste stone waste slag for the plateau tunnel construction according to claim 1, wherein the pretreated sludge is obtained by air-drying the sludge until the water content is 40% -60%, and mixing and fermenting the sludge with plant dry branches and fallen leaves according to the weight ratio of 6:1.
4. The artificial soil formulated based on waste rock waste slag for construction of plateau tunnel according to claim 1, wherein the diameter of the dry yak dung is 0.5-2mm.
5. The artificial soil prepared based on waste stone waste slag for plateau tunnel construction according to claim 1, wherein the crushed particles are 0.5-10mm.
6. The artificial soil prepared based on waste rock waste slag for plateau tunnel construction of claim 1, wherein the microbial inoculant comprises, by weight, 0.04 part of azotobacter chroococcus, 0.04 part of trichoderma harzianum and 0.04 part of bacillus mucilaginosus.
7. A method for preparing artificial soil prepared based on waste rock waste slag for tunnel construction on a plateau as claimed in any one of claims 1 to 6, comprising the steps of:
(1) Weighing the raw materials according to parts by weight, and mixing the waste stone waste slag, the pretreated sludge, the dry yak dung and the plateau plants to obtain a mixture;
(2) Adding the acrylamide and the sodium polyacrylate into the mixture obtained in the step (1), uniformly stirring, and then adding the microbial agent to obtain an artificial soil primary mixed material;
(3) And (3) adding water into the artificial soil primary mixed material to saturate, and curing to obtain the artificial soil prepared based on the waste stone waste slag for the plateau tunnel construction.
8. The method for preparing artificial soil based on the preparation of the waste rock waste slag for the construction of the plateau tunnel according to claim 7, wherein the maintenance time is 24 hours.
9. The use of artificial soil prepared based on waste stones and waste residues for plateau tunnel construction according to any one of claims 1-6 in the restoration of the ecological environment of a waste residue pile, characterized in that the waste residue pile is subjected to soil-covering by spraying.
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