CN-121992800-A - Side slope biomineralization protection system and method based on double-response type signal capsule

CN121992800ACN 121992800 ACN121992800 ACN 121992800ACN-121992800-A

Abstract

The application discloses a slope biomineralization protection system and method based on double-response type signal capsules, wherein the method comprises the steps of respectively preparing double-response type signal capsules, germination capsules and reaction capsules, wherein wall materials of the double-response type signal capsules are obtained by mixing poly-N-isopropyl acrylamide and xanthan gum according to a preset proportion, mixing the double-response type signal capsules, germination capsules and reaction capsules with graded fine sand and chopped basalt fibers to obtain a capsule-aggregate mixture, paving the capsule-aggregate mixture on the surface of a slope, covering planting soil and planting vegetation, and triggering slope time sequence restoration when the preset temperature-moisture content condition is reached. The scheme disclosed by the application can be used for simultaneously responding to temperature, moisture and accurately adapting to complex climate environments.

Inventors

LIU YUNLONG
XIAO YUE
Ren Haoan
ZHANG SHOUDONG

Assignees

郑州大学

Dates

Publication Date: 20260508
Application Date: 20260211

Claims (10)

1. The side slope biomineralization protection method based on the double-response type signal capsule is characterized by comprising the following steps of: Preparing a double-response type signal capsule, a germination capsule and a reaction capsule respectively, wherein the wall material of the double-response type signal capsule is obtained by mixing poly-N-isopropyl acrylamide and xanthan gum according to a preset proportion; mixing the double-response type signal capsule, the germination capsule and the reaction capsule with graded fine sand and chopped basalt fiber to obtain a capsule-aggregate mixture; And paving the capsule-aggregate mixture on the surface of the side slope, covering planting soil and planting vegetation, and triggering the time sequence restoration of the side slope when the condition of the preset temperature-water content is reached.
2. The slope biomineralization protection method based on dual response type signal capsules as claimed in claim 1, wherein the preparing step of the dual response type signal capsules comprises: mixing poly-N-isopropyl acrylamide and xanthan gum according to a preset proportion to obtain a composite wall material; Adding the composite wall material into deionized water to prepare a composite wall material solution with the mass fraction of 10%; And (3) dripping the core material solution into the composite wall material solution by adopting a dripping method, and curing to obtain the double-response signal capsule, wherein the core material solution is prepared from soluble nutrient substances and trace fluorescent tracer.
3. The slope biomineralization protection method based on the dual-response type signal capsule as claimed in claim 2, wherein the mixing of the poly-N-isopropyl acrylamide and the xanthan gum according to the preset proportion to obtain the composite wall material comprises the following steps: Mixing poly-N-isopropyl acrylamide powder and xanthan gum powder according to a mass ratio of 1:1 to obtain a composite wall material, wherein the mass fraction of the xanthan gum is 2% -4%.
4. The slope biomineralization protection method based on dual response type signal capsules of claim 1, wherein the preparing step of the germinating capsules comprises: Mixing gelatin and xanthan gum according to a mass ratio of 2:1 to obtain a sprouted capsule wall material; mixing bacillus pasteurizer spores with bentonite according to a mass ratio of 1:4 to obtain a sprouting capsule core material; and mixing the sprouting capsule wall material and the sprouting capsule core material by adopting a dripping-curing method to obtain the sprouting capsule.
5. The slope biomineralization protection method based on dual-response type signal capsules as claimed in claim 1, wherein the mixing of the dual-response type signal capsules, germination capsules and reaction capsules with graded fine sand and chopped basalt fibers to obtain a capsule-aggregate mixture comprises: Mixing the double-response type signal capsule, the germination capsule and the reaction capsule according to the mass ratio of 1:2:3 to obtain a mixed capsule; and uniformly stirring the mixed capsules, graded fine sand and chopped basalt fibers to obtain a capsule-aggregate mixture.
6. The dual-response signal capsule-based slope biomineralization protection method of claim 1, wherein the paving the capsule-aggregate mixture on the slope surface covers the planting soil and plants the vegetation, and triggering the slope time sequence repair when reaching the preset temperature-water content condition comprises: paving the capsule-aggregate mixture on the surface of a slope, covering planting soil and planting vegetation; When the soil temperature of the side slope is less than or equal to 32 ℃ and the water content of the soil is more than or equal to 12%, the time sequence restoration of the side slope is triggered.
7. The slope biomineralization protection method based on the double-response type signal capsule as claimed in claim 6, wherein the paving thickness of the capsule-aggregate mixture is 10-15cm, the compactness is more than or equal to 90%, and the covering thickness of the planting soil is 5-8cm.
8. The slope biomineralization protection method based on dual response type signal capsules as claimed in claim 1, wherein the average particle size of the dual response type signal capsules is 100-150 μm, the average particle size of the germinating capsules is 150-200 μm, and the average particle size of the reaction capsules is 200-250 μm.
9. The slope biomineralization protection method based on the dual-response type signal capsule as claimed in claim 1, wherein the core material of the reaction capsule comprises calcium chloride and a pH buffer, the mass ratio of the calcium chloride is 95%, the pH buffer is a potassium dihydrogen phosphate-dipotassium hydrogen phosphate mixed solution, and the mass ratio of the pH buffer is 5%.
10. A dual-response signal capsule-based slope biomineralization protection system, the system comprising: The preparation module is used for respectively preparing a double-response type signal capsule, a germination capsule and a reaction capsule, wherein the wall material of the double-response type signal capsule is obtained by mixing poly-N-isopropyl acrylamide and xanthan gum according to a preset proportion; The mixing module is used for mixing the double-response type signal capsule, the germination capsule and the reaction capsule with grading fine sand and chopped basalt fibers to obtain a capsule-aggregate mixture; And the restoration module is used for paving the capsule-aggregate mixture on the surface of the side slope, covering planting soil and planting vegetation, and triggering the time sequence restoration of the side slope when the preset temperature-water content condition is reached.

Description

Side slope biomineralization protection system and method based on double-response type signal capsule Technical Field The application relates to the technical field of geotechnical engineering ecological protection, in particular to a slope biomineralization protection system and method based on double-response type signal capsules. Background In the field of slope ecological protection, the split type self-adaptive biomineralization capsule system solves the problems of poor reaction controllability and low material utilization rate of the traditional microorganism-induced calcium carbonate precipitation (MICP) technology through a three-stage time sequence release mechanism of 'signal-germination-reaction'. The signal capsule is used as a first switch for repairing and triggering, and the response sensitivity of the wall material directly determines the starting precision of the whole mineralization process. The existing signal capsule wall material adopts single low-concentration water-sensitive polymers such as xanthan gum and the like, and can judge whether to rupture and release nutrition signals only through the moisture infiltration amount, so that the signal capsule wall material has obvious technical limitations: 1. The response distortion under extreme temperature is that in high-temperature arid areas, single water-sensitive wall materials are easy to age rapidly and strengthen due to high temperature, even if the rainwater infiltration amount reaches a threshold value, the wall materials are difficult to crack rapidly, so that nutrition signals are released slowly, the best opportunity for microorganisms to germinate is missed, and in high-cold freeze thawing areas, the low-temperature environment can lead the toughness of the wall materials to be reduced, the cracking sensitivity to be improved, a small amount of snow-melting water can trigger cracking, so that nutrition substances are consumed too early, and insufficient nutrition can support microbial reaction in subsequent rainfall. 2. The false triggering rate is high in complex climates, and in the face of complex climates such as short-time gusts, abrupt changes in day and night temperature differences and the like, a single water-sensitive wall material cannot distinguish effective repair moisture (such as continuous rainfall) from ineffective interference moisture (such as short-time dew and small amount of snow thawing), false triggering is easy to occur, nutrition signals are released by mistake, repair materials are wasted, time sequence coordination of signal-germination-reaction is damaged, and mineralization repair efficiency is reduced. Therefore, a dual-response type signal capsule wall material capable of simultaneously responding to temperature and moisture and accurately adapting to complex climate environment is needed to solve the technical problems. Disclosure of Invention The application mainly aims to provide a slope biomineralization protection system and method based on double-response type signal capsules, and aims to solve the technical problems that in the related art, water-sensitive polymers such as single low-concentration xanthan gum and the like are adopted, whether nutritional signals are released by rupture can only be judged through water infiltration amount, and temperature, water and a complex climate environment cannot be responded at the same time. In order to achieve the above purpose, the embodiment of the application provides a slope biomineralization protection method based on a dual-response type signal capsule, which comprises the following steps: Preparing a double-response type signal capsule, a germination capsule and a reaction capsule respectively, wherein the wall material of the double-response type signal capsule is obtained by mixing poly-N-isopropyl acrylamide and xanthan gum according to a preset proportion; Mixing the double-response type signal capsule, the germination capsule and the reaction capsule with graded fine sand and chopped basalt fiber to obtain a capsule-aggregate mixture; And paving the capsule-aggregate mixture on the surface of the side slope, covering planting soil and planting vegetation, and triggering the time sequence restoration of the side slope when the preset temperature-water content condition is reached. In one possible embodiment of the present application, the preparation step of the dual-response type signal capsule comprises: mixing poly-N-isopropyl acrylamide and xanthan gum according to a preset proportion to obtain a composite wall material; adding the composite wall material into deionized water to prepare a composite wall material solution with the mass fraction of 10%; And (3) dripping the core material solution into the composite wall material solution by adopting a dripping method, and curing to obtain the double-response signal capsule, wherein the core material solution is prepared from soluble nutrient substances and trace fluorescent tracer.