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CN-121974645-A - Ecological reinforcing composition for river levee and lake levee and construction method thereof

CN121974645ACN 121974645 ACN121974645 ACN 121974645ACN-121974645-A

Abstract

The invention relates to the technical field of river management, discloses a river levee and lake levee ecological reinforcement composition and a construction method thereof, and aims to solve the problems that the traditional river levee and lake levee depend on stone throwing/piling, the impact resistance stability is weak, the industrial and mining solid waste consumption is low and the ecology is damaged. The invention uses multi-ore solid waste as a core functional component, is matched with an on-site dike Zhou Tuliao as aggregate, combines a geopolymer excitant and an ecological regulator to form a cement-free flow state system, and forms an integrated structure of deep embedded dike base stabilizing layer and surface anti-impact ecological barrier after being solidified by double-row drilling-layered pouring along a dike/lake dike base during construction. The invention has strong impact resistance and good ecological compatibility, not only can consume industrial and mining solid waste in a high proportion and greatly reduce solid waste piling pollution, but also can strengthen the flood-fighting and washing capability of the embankment base, and avoid the problems of ecological damage and high cost of the traditional process.

Inventors

  • YANG XIAOBIN
  • ZhuGe Xifeng
  • YANG BOYANG
  • JIANG JUNFENG
  • JIANG LANFANG

Assignees

  • 北京聚合新材料有限公司

Dates

Publication Date
20260505
Application Date
20251229

Claims (6)

  1. 1. The ecological reinforcing composition for river levee and lake levee is characterized by comprising, by weight, 50-70 parts of multi-work mine solid waste, zhou Tuliao-45 parts of in-situ levee, 8-11 parts of geopolymer excitant, 19-24 parts of water and 0.6-1.5 parts of ecological regulator; The on-site dyke Zhou Tuliao is cohesive soil or sandy soil with the grain diameter of more than 4mm and the water content of 22-30 percent, the geopolymer activator is a compound of sodium silicate with the modulus of 2.8-3.2 and sodium hydroxide with the concentration of 28-32 percent, wherein the mass ratio of the sodium silicate to the sodium hydroxide is 2:1-1.7:1, the ecological regulator is a compound of humic acid, sodium alginate and plant growth regulator, and the mass ratio of the humic acid, the sodium alginate to the plant growth regulator is 4:2:1.
  2. 2. The ecological reinforcing composition for river levee and lake levee according to claim 1, wherein the composition of the multi-mineral solid waste raw materials comprises 20-28 parts of fly ash, 10-16 parts of desulfurized gypsum, 8-15 parts of pretreated red mud and 7-12 parts of phosphogypsum, wherein the pretreated red mud is red mud which is obtained by neutralizing 5-8% of ferrous sulfate for 24-36 hours and is screened to have the particle size less than or equal to 2mm, and the phosphogypsum is industrial mineral solid waste which is obtained by adjusting the pH value of the phosphogypsum to 7.0-7.5 after lime pretreatment and is dried to have the water content less than or equal to 10%.
  3. 3. A construction method based on the ecological reinforcing composition for river levee and lake levee of any one of claims 1-2, characterized by comprising the following steps: s1, pretreatment of raw materials: The on-site dike Zhou Tuliao is treated, wherein temporary screening stations are arranged at the periphery of the river dike/lake dike, broken stone and weed are removed by using a vibrating screen, and the water content is adjusted to 22-30% by airing/adding water; The multi-process mineral solid waste treatment comprises the steps of neutralizing red mud for 24-36h through 5% -8% ferrous sulfate, screening until the grain diameter is less than or equal to 2mm, adding lime into phosphogypsum, stirring, adjusting the pH value to 7.0-7.5,80 ℃, drying until the water content is less than or equal to 10%, screening fly ash and desulfurized gypsum through a 80-mesh screen, and removing coarse impurities; The ecological regulator is prepared by mixing humic acid, sodium alginate and naphthylacetic acid at a ratio of 4:2:1, and adding water to obtain 6% aqueous solution; s2, preparing a solidified body, namely putting the processed multi-industrial and mineral solid waste and an on-site dike Zhou Tuliao into a forced mixer, dry-mixing at the rotating speed of 160r/min for 3-5min to ensure that the solid waste and soil materials are uniformly mixed, adding a geopolymer exciting agent, water and an ecological regulator aqueous solution, adjusting the rotating speed to 200r/min, wet-mixing for 6-9min, detecting slump and initial setting time, and transferring the obtained mixture into a slurry storage tank with a low-speed stirring function after reaching the standard; S3, drilling and pouring, namely drilling holes in a double-row mode along a river levee/lake levee base at a position 1-2m away from levee feet by adopting a hydraulic pile driver, wherein the front water facing side is a reinforced impact resistant row, the aperture is 160-190mm, the aperture distance is 500-700mm, the aperture depth is 3.0-5.0m, the back water side is an auxiliary reinforced row, the aperture is 140-170mm, the aperture distance is 700-900mm, the aperture depth is 2.5-4.0m, a solidified body is poured in a layered mode through a conduit with the diameter of 70-90mm after the holes are cleared, the height of each layer is 30-50cm, the pouring pressure is controlled to be 0.25-0.35MPa, and the solidified body is fully filled in the apertures of the levee base by using the pressure without vibrating; And S4, maintenance and ecological optimization, namely covering a breathable moisturizing film after filling, maintaining for 12-18 days, sprinkling water for 1 time every day in the first 5 days, keeping the surface layer moist, and sowing water-resistant vegetation seeds on the surface of the river levee/lake levee surface layer solidified body after water flow flushing detection reaches the standard, so as to finish ecological restoration.
  4. 4. A construction method according to claim 3, wherein in step S3 the drilling axis is inclined at an angle of 8 ° -12 ° to the horizontal of the bank base.
  5. 5. The construction method according to claim 3, wherein the water flow scouring resistance detection in the step S4 adopts a flood simulation device, water body with sand content of 30kg/m 3 is used for simulating flood with flow speed of 3m/S, the surface of the solidified body is scoured for 4 hours, and the water flow scouring resistance loss rate is less than or equal to 2.5%.
  6. 6. Use of a river levee and lake levee ecological reinforcement composition as defined in claims 1-2 in reinforcement repair of river levee and lake levee.

Description

Ecological reinforcing composition for river levee and lake levee and construction method thereof Technical Field The invention relates to the technical field of river management, in particular to a river levee and lake levee ecological reinforcement composition based on high-proportion multi-industrial mine solid waste-geopolymer and a construction method thereof. Background The river levee and the lake levee are core water conservancy structures for resisting flood and protecting coastal facilities, and the traditional reinforcement technology has obvious defects: 1. The traditional reinforcement depends on stone throwing and wood piling, can only strengthen surface layer protection, can not solve the problem that the embankment (soil below the embankment) is washed by flood, namely in a sandy river such as a yellow river embankment, the flood has high sand content and high flow speed, the embankment is easy to empty to form piping, thereby leading the embankment to break, and more than 60 percent of river embankment damage in historical flood disasters is caused by the scouring of the embankment; 2. The amount of the industrial and mining solid waste is low, the environmental protection performance is poor, the annual production of the industrial and mining solid waste of fly ash, desulfurized gypsum, red mud, phosphogypsum and the like in China exceeds 30 hundred million tons, the existing river bank reinforcing technology is only used in a small amount (the solid waste accounts for less than or equal to 30 percent), and a large amount of solid waste is piled up to occupy the land and pollute the soil; 3. The ecological damage is serious, the restoration cost is high, the processes such as stone throwing and piling can damage the vegetation and soil structure around the river levee, the water and soil loss is caused, and the later ecological restoration cost accounts for 20-30% of the total investment of the engineering; 4. The material is dependent on outward transport, the cost is high, the traditional reinforcing materials (stone and wood piles) need to be transported from different places, the single kilometer transportation cost is more than 40 ten thousand yuan, and the cost is higher especially in remote river sections. Disclosure of Invention Aiming at the technical defects, the invention aims to provide a river levee and lake levee ecological reinforcing composition and a construction method thereof, which are used for high-proportion digestion of multi-industrial and mining solid waste, and the reinforcing structure of deep embedded levee base and ecological impact resistance is constructed by combining an on-site levee Zhou Tuliao and a geopolymer system, so that the flood fighting capability of the levee base is enhanced, and the problems of ecological damage and high cost of the traditional technology are avoided. In order to solve the technical problems, the invention adopts the following technical scheme: The ecological reinforcing composition for the river levee and the lake levee comprises, by weight, 50-70 parts of multi-work mineral solid waste, zhou Tuliao-45 parts of an on-site levee Zhou Tuliao-45 parts of a geopolymer activator, 8-11 parts of water, 19-24 parts of water and 0.6-1.5 parts of an ecological regulator, wherein the on-site levee Zhou Tuliao is cohesive soil or sandy soil within the range of 500m around the river levee/the lake levee, impurities with the particle size of more than 4mm are removed through screening, the water content is controlled to be 22-30%, the geopolymer activator is a compound of sodium silicate with the modulus of 2.8-3.2 and sodium hydroxide with the concentration of 28-32%, the mass ratio of the sodium silicate to the sodium hydroxide is 2:1-1.7:1, and the ecological regulator is a compound of humic acid, sodium alginate and a plant growth regulator, wherein the mass ratio of the humic acid, the sodium alginate to the plant growth regulator is 4:2:1. The multi-mineral solid waste raw materials comprise 20-28 parts of fly ash, 10-16 parts of desulfurized gypsum, 8-15 parts of pretreated red mud and 7-12 parts of phosphogypsum, wherein the pretreated red mud is red mud with the particle size less than or equal to 2mm after being neutralized by 5-8% of ferrous sulfate for 24-36 hours and being screened, and the phosphogypsum is industrial mineral solid waste with the water content less than or equal to 10% after being subjected to pH value adjustment to 7.0-7.5 by lime pretreatment and being dried. The invention also relates to a construction method of the ecological reinforcing composition for the river levee and the lake levee, which comprises the following steps: s1, pretreatment of raw materials: The on-site dike Zhou Tuliao is treated, wherein temporary screening stations are arranged at the periphery of the river dike/lake dike, broken stone and weed are removed by using a vibrating screen, and the water content is adjusted to 22-30% by airin