CN114568252A - Matrix material for repairing mine rock slope and preparation method thereof - Google Patents

Matrix material for repairing mine rock slope and preparation method thereof Download PDF

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Publication number
CN114568252A
CN114568252A CN202210285316.4A CN202210285316A CN114568252A CN 114568252 A CN114568252 A CN 114568252A CN 202210285316 A CN202210285316 A CN 202210285316A CN 114568252 A CN114568252 A CN 114568252A
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parts
weight
matrix material
water
repairing
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CN114568252B (en
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丁星妤
胡文君
罗珺
��昌毅
董理
杨仙
黎永索
胡达
梁小强
周怡
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Hunan City University
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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
    • A01G24/20—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
    • A01G24/23—Wood, e.g. wood chips or sawdust
    • 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
    • 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
    • A01G24/17—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material containing slag
    • 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
    • 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
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
    • Y02A10/23—Dune restoration or creation; Cliff stabilisation

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Forests & Forestry (AREA)
  • Wood Science & Technology (AREA)
  • Ecology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Cultivation Of Plants (AREA)

Abstract

A matrix material for repairing a rock slope of a mine comprises 300 parts by weight of wood fiber 100, 30-100 parts by weight of degradable fiber, 5-15 parts by weight of a high-molecular water-retaining agent, 15-35 parts by weight of microporous particles, 5-20 parts by weight of a growth promoter, 10-40 parts by weight of a binder and 15-50 parts by weight of water; the degradable fibers comprise one or more of cellulose acetate fibers, chitosan fibers, alginic acid fibers, alkane chain polyester fibers or polylactic acid fibers; the polymer water-retaining agent is polyglutamic acid-seaweed extract. When the matrix material is used for repairing the rock slope of the mine, the matrix material has excellent water and fertilizer retention performance and certain salt resistance; the strength of the matrix material after spray seeding on the rock slope can be met.

Description

Matrix material for repairing mine rock slope and preparation method thereof
Technical Field
The invention relates to a soil remediation material, in particular to a matrix material for remedying a rock slope of a mine and a preparation method thereof.
Background
With the progress of industrialization, a large amount of mineral resources are developed for industrial construction; then the environmental problems of the mine left behind by the development of the mineral products are more and more prominent. After mineral resources in a plurality of mines are excavated, the side slope of the mine is rocky or has little soil, which brings great technical difficulty to the restoration of the side slope of the mine. The conventional ecological restoration matrix material is not designed for the rocky slope, and when the conventional ecological restoration matrix material is used for the ecological restoration of the rocky slope, the water retention performance is easy to be insufficient, and the nutrition is easy to lose, so that the green plants for ecological restoration are not good in growth.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a matrix material for repairing a rock slope of a mine and a preparation method thereof.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a matrix material for repairing a rock slope of a mine comprises 300 parts by weight of wood fiber 100, 30-100 parts by weight of degradable fiber, 5-15 parts by weight of a high-molecular water-retaining agent, 15-35 parts by weight of microporous particles, 5-20 parts by weight of a growth promoter, 10-40 parts by weight of a binder and 15-50 parts by weight of water; the degradable fibers comprise one or more of cellulose acetate fibers, chitosan fibers, alginic acid fibers, alkane chain polyester fibers or polylactic acid fibers; the polymer water-retaining agent is polyglutamic acid-seaweed extract.
Preferably, the growth promoter comprises one or more of compound fertilizer and organic fertilizer.
Preferably, the binder comprises an organic part and an inorganic part, the organic part comprises one or more of starch, dextrin, polyvinyl alcohol or carboxymethyl cellulose, and the inorganic component comprises one or more of cement, kaolin powder and montmorillonite powder.
Preferably, the microporous particles include one or more of calcium silicate spherical particles, coal dust particles or porous particles formed by sintering tailings.
Preferably, the polyglutamic acid-seaweed extract water-retaining agent is obtained by mixing glutamic acid fermentation liquor and seaweed extract according to the weight ratio of 2:1-1: 2.
A preparation method of a matrix material for repairing a rock slope of a mine comprises the following steps;
1) preparing a macromolecular water-retaining agent;
Figure 947561DEST_PATH_IMAGE001
preparing polyglutamic acid fermentation liquor; inoculating Bacillus licheniformis on the culture medium, culturing at 25-40 deg.C for 20-30h, and separating to obtain fermentation broth, i.e. polyglutamic acid fermentation broth;
Figure 988460DEST_PATH_IMAGE002
preparing seaweed liquid;
Figure 790063DEST_PATH_IMAGE003
will 1Cleaning 000 parts by weight of seaweed, cutting into pieces and soaking for 1-2 hours;
Figure 165681DEST_PATH_IMAGE004
will be described in detail
Figure 6204DEST_PATH_IMAGE003
Adding the treated seaweed into 10000-20000 parts by weight of water, and then adding 100-200 parts by weight of potassium hydrogen phosphate, 20-50 parts by weight of acid cellulase and 1-5 parts by weight of acid pectinase; adjusting the pH value to 4.5-5;
Figure 416457DEST_PATH_IMAGE005
will be described in detail
Figure 716857DEST_PATH_IMAGE004
The solution of (a) is heated to 45-55 ℃ and maintained for 1-3 hours, and then heated to 60 ℃;
Figure 579771DEST_PATH_IMAGE006
to the step of
Figure 492495DEST_PATH_IMAGE005
Adding sodium carbonate solution and alkaline pectase solution into the solution, adjusting pH to 7.5-8, stirring at 60 deg.C for 2-3 hr, and centrifuging to obtain supernatant, i.e. Sargassum extract;
Figure 491675DEST_PATH_IMAGE007
will be described in detail
Figure 586145DEST_PATH_IMAGE001
The obtained glutamic acid fermentation liquor and the process
Figure 733093DEST_PATH_IMAGE002
Mixing the obtained seaweed extract according to the weight ratio of 2:1-1:2 to obtain the macromolecular water-retaining agent.
2) Uniformly stirring 50-150 parts by weight of wood fiber, 30-100 parts by weight of degradable fiber, 5-15 parts by weight of the high-molecular water-retaining agent obtained in the step 1), 15-35 parts by weight of microporous particles, 5-20 parts by weight of growth promoter, 10-40 parts by weight of binder and 15-50 parts by weight of water to obtain the matrix material for repairing the rock slope of the mine.
The preparation method of the matrix material for repairing the rock slope of the mine is preferable, and the steps are
Figure 948042DEST_PATH_IMAGE001
The culture medium comprises molasses, corn syrup, monosodium glutamate, NaCl, and Cal2、MgSO4Glucose and water, and sterilizing at a temperature of more than 100 ℃ for more than 30 minutes after uniformly stirring; the temperature is lowered and the pH is then adjusted to 6.5-7.
In the above preparation method of the matrix material for repairing mine rocky slopes, preferably, the seaweed comprises one or more of kelp, laver, undaria pinnatifida and gelidium amansii.
Compared with the prior art, the invention has the advantages that: when the matrix material is used for repairing the rock slope of the mine, the matrix material has excellent water and fertilizer retention performance and certain salt resistance; the strength of the matrix material after spray seeding on the rock slope can be met.
Detailed Description
In order to facilitate an understanding of the invention, the invention will now be described more fully and in detail with reference to the preferred embodiments, but the scope of the invention is not limited to the specific embodiments described below.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Example 1
A matrix material for repairing mine rock slopes comprises 200 parts by weight of wood fibers, 50 parts by weight of degradable fibers, 15 parts by weight of a high-molecular water-retaining agent, 35 parts by weight of microporous particles, 15 parts by weight of a growth promoter, 20 parts by weight of a binder and 30 parts by weight of water; the degradable fiber is a mixture of chitosan fiber and alginate fiber; the polymer water-retaining agent is polyglutamic acid-seaweed extract. The growth promoter comprises compound fertilizer and organic fertilizer.
In this embodiment, the binder includes an organic portion and an inorganic portion, the organic portion being starch and the inorganic component being cement or kaolin powder. The matrix material for repairing the mine rock slope is different from the traditional ecological repairing matrix material, in the embodiment, the matrix material is more difficult to adhere to the rock slope, so that the matrix material is relatively stable on the slope by the aid of the binder suitable for the rock, a large amount of slag, ore and the like are usually contained in the mine slope, the slope has certain salinity under the washing of rainwater, particularly acid rainwater, and the matrix material is firmly adhered to the slope with certain difficulty.
As mentioned above, since the matrix material of this example is used for mine rock slopes, a certain amount of salt is formed on the slopes under the washing of rainwater. In this example, the polyglutamic acid-seaweed extract water retention agent is obtained by mixing glutamic acid fermentation liquor and seaweed extract according to the weight ratio of 2:1-1: 2. The seaweed extract in the polyglutamic acid-seaweed extract water-retaining agent is extracted from marine algae, so the polymer water-retaining agent of the embodiment has certain salt resistance on the premise of retaining water.
In the embodiment, the addition of the degradable fiber can enhance the strength of the matrix material and maintain the stability of the components of the matrix material; and is degradable at a later stage, i.e. after the plants restoring the slope have grown.
In this embodiment, the microporous particles comprise calcium silicate spherical particles. In this example, the microporous structure in the spherical calcium silicate particles can hold a large amount of water and nutrients. After the matrix material for repairing the rock slope of the mine is sprayed on the rock slope of the mine, nutrients can be accumulated in the microporous particles along with water during watering, so that moisture and fertilizer are continuously provided for green plants for slope repair.
The embodiment also provides a preparation method of the matrix material for repairing the rock slope of the mine, which comprises the following steps of;
1) preparing a macromolecular water-retaining agent;
Figure 67308DEST_PATH_IMAGE001
preparing polyglutamic acid fermentation liquor; inoculating Bacillus licheniformis on the culture medium, culturing at 25-40 deg.C for 20-30h, and separating to obtain fermentation broth, i.e. polyglutamic acid fermentation broth. Step (ii) of
Figure 679817DEST_PATH_IMAGE001
The culture medium comprises molasses, corn syrup, monosodium glutamate, NaCl, and Cal2、MgSO4Glucose and water, and sterilizing at a temperature of more than 100 ℃ for more than 30 minutes after uniformly stirring; the temperature is lowered and the pH is then adjusted to 6.5-7.
Figure 517323DEST_PATH_IMAGE002
Preparing seaweed liquid;
Figure 270384DEST_PATH_IMAGE003
cleaning 1000 parts by weight of kelp, cutting into pieces and soaking for 1-2 hours;
Figure 509736DEST_PATH_IMAGE004
will be described in detail
Figure 251337DEST_PATH_IMAGE003
Adding the treated kelp into 10000 parts by weight of water, and then adding 100 parts by weight of potassium hydrogen phosphate, 205 parts by weight of acid cellulase and 3 parts by weight of acid pectinase; adjusting the pHA value of 4.5 to 5;
Figure 825407DEST_PATH_IMAGE005
will be described in detail
Figure 867312DEST_PATH_IMAGE004
The solution of (a) is heated to 45-55 ℃ and maintained for 1-3 hours, and then heated to 60 ℃;
Figure 446323DEST_PATH_IMAGE006
to the step of
Figure 181061DEST_PATH_IMAGE005
Adding sodium carbonate solution and alkaline pectase solution into the solution, adjusting pH to 7.5-8, stirring at 60 deg.C for 2-3 hr, and centrifuging to obtain supernatant, i.e. Sargassum extract;
Figure 773585DEST_PATH_IMAGE007
will be described in detail
Figure 884761DEST_PATH_IMAGE001
The obtained glutamic acid fermentation liquor and the process
Figure 315349DEST_PATH_IMAGE002
Mixing the obtained seaweed extract according to the weight ratio of 2:1-1:2 to obtain the macromolecular water-retaining agent.
2) 200 parts by weight of wood fiber, 50 parts by weight of degradable fiber, 15 parts by weight of high-molecular water-retaining agent, 35 parts by weight of microporous particles, 15 parts by weight of growth promoter, 20 parts by weight of binder and 30 parts by weight of water are uniformly stirred to obtain the matrix material for repairing the rock slope of the mine.
When the matrix material for repairing the mine rock slope is used, firstly, an inner net is hung on the cleaned mine rock slope, then, a layer of foreign soil is sprayed, then, the matrix material is sprayed, and finally, a net is hung. When the matrix material of the embodiment is sprayed, the matrix material is uniformly mixed with plant seeds, and the plant seeds can be perennial ryegrass subjected to germination acceleration. The plant can sprout after being sprayed for about one week, the vegetation can grow to 3-5cm for two weeks, and the vegetation can grow to 8-10cm after one month.
When the matrix material is used for repairing the rock slope of the mine, the matrix material has excellent water and fertilizer retention performance and certain salt resistance; the strength of the matrix material after spray seeding on the rock slope can be met.

Claims (8)

1. A matrix material for repairing mine rock slopes is characterized in that: comprises 100-300 parts of wood fiber, 30-100 parts of degradable fiber, 5-15 parts of polymer water-retaining agent, 15-35 parts of microporous particles, 5-20 parts of growth promoter, 10-40 parts of binder and 15-50 parts of water by weight; the degradable fibers comprise one or more of cellulose acetate fibers, chitosan fibers, alginic acid fibers, alkane chain polyester fibers or polylactic acid fibers; the polymer water-retaining agent is polyglutamic acid-seaweed extract.
2. The matrix material for repairing a rock slope of a mine according to claim 1, wherein: the growth promoter comprises one or more of compound fertilizer and organic fertilizer.
3. The matrix material for repairing a rock slope of a mine according to claim 1, wherein: the binder comprises an organic portion and an inorganic portion, the organic portion comprises one or more of starch or dextrin or polyvinyl alcohol or carboxymethyl cellulose, and the inorganic component comprises one or more of cement, kaolin powder and montmorillonite powder.
4. The matrix material for repairing a rock slope of a mine according to claim 1, wherein: the microporous particles comprise one or more of calcium silicate spherical particles, coal dust particles or porous particles formed by sintering tailings.
5. The matrix material for repairing a rock slope of a mine according to claim 1, wherein: the polyglutamic acid-seaweed extract water-retaining agent is obtained by mixing glutamic acid fermentation liquor and seaweed extract according to the weight ratio of 2:1-1: 2.
6. A preparation method of a matrix material for repairing mine rock slopes is characterized by comprising the following steps: comprises the following steps;
1) preparing a macromolecular water-retaining agent;
Figure 63567DEST_PATH_IMAGE001
preparing polyglutamic acid fermentation liquor; inoculating Bacillus licheniformis on the culture medium, culturing at 25-40 deg.C for 20-30h, and separating to obtain fermentation broth, i.e. polyglutamic acid fermentation broth;
Figure 216200DEST_PATH_IMAGE002
preparing seaweed liquid;
Figure 866624DEST_PATH_IMAGE003
cleaning 1000 parts by weight of seaweed, cutting into pieces and soaking for 1-2 hours;
Figure 885658DEST_PATH_IMAGE004
will be described in detail
Figure 175694DEST_PATH_IMAGE003
Adding the treated seaweed into 10000-20000 parts by weight of water, and then adding 100-200 parts by weight of potassium hydrogen phosphate, 20-50 parts by weight of acid cellulase and 1-5 parts by weight of acid pectinase; adjusting the pH value to 4.5-5;
Figure 958449DEST_PATH_IMAGE005
will be described in detail
Figure 588013DEST_PATH_IMAGE004
The solution of (a) is heated to 45-55 ℃ and maintained for 1-3 hours, and then heated to 60 ℃;
Figure 417429DEST_PATH_IMAGE006
to the step of
Figure 352018DEST_PATH_IMAGE005
Adding sodium carbonate solution and alkaline pectase solution into the solution, adjusting pH to 7.5-8, stirring at 60 deg.C for 2-3 hr, and centrifuging to obtain supernatant, i.e. Sargassum extract;
Figure 282672DEST_PATH_IMAGE007
will be described in detail
Figure 297901DEST_PATH_IMAGE001
The obtained glutamic acid fermentation liquor and the process
Figure 721054DEST_PATH_IMAGE002
Mixing the obtained seaweed extract according to the weight ratio of 2:1-1:2 to obtain a high-molecular water-retaining agent;
2) uniformly stirring 50-150 parts by weight of wood fiber, 30-100 parts by weight of degradable fiber, 5-15 parts by weight of the high-molecular water-retaining agent obtained in the step 1), 15-35 parts by weight of microporous particles, 5-20 parts by weight of growth promoter, 10-40 parts by weight of binder and 15-50 parts by weight of water to obtain the matrix material for repairing the rock slope of the mine.
7. The preparation method of the matrix material for repairing the rock slope of the mine according to claim 6, wherein: said step (c) is
Figure 140010DEST_PATH_IMAGE001
The culture medium comprises molasses, corn syrup, monosodium glutamate, NaCl, and Cal2、MgSO4Glucose and water, and sterilizing at a temperature of more than 100 ℃ for more than 30 minutes after uniformly stirring; the temperature is lowered and the pH is then adjusted to 6.5-7.
8. The preparation method of the matrix material for repairing the rock slope of the mine according to claim 7, wherein: the seaweed comprises one or more of herba Zosterae Marinae, thallus Porphyrae, thallus laminariae and Eucheuma Gelatinosum.
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CN112029011A (en) * 2020-07-27 2020-12-04 浙江工业大学 Green process for extracting ultralow-viscosity low-M/G-value sodium alginate from kelp
CN113728893A (en) * 2021-09-08 2021-12-03 扎赉诺尔煤业有限责任公司 High-cold-grass original ore area rock slope regreening matrix and preparation method thereof

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