CN115769776A

CN115769776A - Ecological soil for greening and reinforcing side slope

Info

Publication number: CN115769776A
Application number: CN202211577246.6A
Authority: CN
Inventors: 姬贺飞; 李凯; 罗晓青; 武思宇
Original assignee: Tianjin Zhongyan Dadi Material Technology Co ltd
Current assignee: Tianjin Zhongyan Dadi Material Technology Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-03-10

Abstract

The invention discloses ecological soil for slope greening and reinforcement, belonging to the field of slope greening, and comprising the following components of 1000 to 1200 parts of soil sample, 100 to 400 parts of curing agent, 100 to 800 parts of water, 100 to 300 parts of ceramsite and 200 to 300 parts of plant seeds; according to the invention, through the flowing, stacking and compacting of ecological soil, survival conditions are created for plants on a slope; the slope reinforcement and greening are realized through the growth and the coverage of the saline-alkali tolerant plant seeds.

Description

Ecological soil for greening and reinforcing side slope

Technical Field

The invention relates to the field of slope greening, in particular to ecological soil for slope greening and reinforcement.

Background

With the rapid development of national social and economic construction, a large number of exposed slopes left by engineering construction are large in catchment area, high in water flow speed and strong in scouring capacity, and lack of soil conditions, nutrient conditions and water conditions for plant growth, so that plants are extremely difficult to survive, the surfaces of the slopes are in an unstable state, the slopes are easy to slip and collapse, water and soil loss is serious, and the slopes are higher and steeper after water and soil loss occurs, and the ecological environment of the slopes falls into a vicious circle. The stability of the slope and the treatment of ecological restoration are always difficult points for the slope treatment. The exposed side slope has the following characteristics: firstly, the soil, water and organic matters on the surface of the side slope are lack, the water and soil loss degree is serious, and the vegetation is extremely difficult to recover under natural conditions; secondly, the treatment difficulty is high, the technical content of treatment measures is high, and the treatment investment is large; thirdly, large-area bare mountains will affect the healthy development of local ecological environment, affect the circulation of information, energy and the like among regional vegetation, and simultaneously easily cause geological disasters such as slumping, rockfall and the like, thereby causing potential safety hazards. The existing side slope reinforcing mode comprises a gravity type retaining wall, a facing wall, a sash anchor rod, a sash anchor rope, a herringbone framework slope protection, a cement paste spraying slope protection and the like, and the mode is high in construction cost, long in construction period, large in construction difficulty and incapable of meeting two requirements of reinforcement and greening simultaneously.

Therefore, there is a need to provide a more optimal solution to the above problems.

Disclosure of Invention

The invention provides ecological soil for greening and reinforcing side slopes, which overcomes the defects faced by greening and reinforcing side slopes, and the slump reaches 160 to 260mm after the ecological soil is stirred, so that the ecological soil has fluidity and self-compactness; the initial setting time reaches 10 to 24 hours; the strength of the slope surface reaches 0.2 to 0.8MPa in 7 days, and the strength of the slope surface reaches 0.5 to 2.0MPa in 28 days. The slope surface biological treatment method has the advantages that the slope surface biological treatment method is combined with the shortage of soil, water and organic matters on the surface of the slope, the treatment difficulty is high, the healthy development characteristic of local ecological environment is influenced by large-area exposed slope bodies, slope curing and greening can be simultaneously carried out, the surface environment of the slope is changed on the premise of ensuring the stability of the slope, the biological diversity of the surface of the slope is increased, the construction cost is reduced, and the construction efficiency is improved. The curing agent adopted in the invention is an inorganic cementing material formed by a plurality of inorganic materials according to a certain proportion, the inorganic cementing material and the components in the soil sample are subjected to hydration reaction, the ecological soil has certain strength at the later stage through the micro-expansion and cementing action generated in the reaction process, the curing effect is achieved, and meanwhile, the rice hull ash and the plant ash in the curing agent provide nutrients for the plant seeds; the adopted ceramsite provides water-retaining, ventilating and heat-insulating environment for plant seeds; the adopted plant seeds are saline-alkali-resistant and barren-resistant plant seeds and can adapt to a certain saline-alkali environment, and meanwhile, plants grown from the plant seeds have different heights, so that conditions are created for the diversity and stability of species on the side slope. According to the invention, through uniformly mixing the soil sample, the curing agent, the ceramsite, the water and the plant seeds and through the coordination effect of the components, on one hand, a growth environment is created for the plant seeds, and on the other hand, the plant seeds are uniformly distributed on the slope. The invention can change the fluidity of the ecological soil by changing the water consumption, and ensure that the ecological soil is uniformly covered on the side slopes with different slopes.

The purpose of the invention can be realized by the following technical scheme:

the ecological soil for slope greening and reinforcement is characterized by comprising, by weight, 1000 to 1200 parts of soil sample, 100 to 400 parts of curing agent, 100 to 800 parts of water, 100 to 300 parts of ceramsite and 200 to 300 parts of plant seeds.

Preferably, the soil sample comprises one or more of sandy soil, silty clay, humus soil and mucky soil with the water content of 25-45%.

Preferably, the curing agent comprises: 10-30 parts of plant ash, 10-30 parts of rice hull ash, 30-60 parts of mineral powder, 5-20 parts of desulfurized gypsum, 10-25 parts of coal ash and 5-15 parts of slag.

Preferably, the ceramsite comprises one or more of biological sludge ceramsite, river bottom sludge ceramsite and fly ash ceramsite in the gravel ceramsite.

Preferably, said plant seed comprises: 30-60 parts of Chinese iris seed, 30-60 parts of bermudagrass seed, 30-60 parts of carpet grass seed, 30-60 parts of green bristlegrass seed, 10-20 parts of Chinese thorowax seed and 10-20 parts of amorpha fruticosa seed.

According to the invention, plant seeds and necessary conditions for plant survival are combined with the fluidized solidified soil, so that the fluidized solidified soil can firstly carry out comprehensive coverage solidification on the side slope through the self fluidity and self compactness, survival conditions are provided for the plant seeds, the plant seeds grow, the side slope environment is changed, and the biological diversity on the surface of the side slope is increased; through the solidification effect of the ecological soil, the structure of the side slope is prevented from collapsing and falling, the rainwater erosion resistance of the side slope is improved, the water and soil loss is reduced, the retention of water, soil and organic matters is ensured, and the solidification and greening of the side slope are realized.

Drawings

Fig. 1 is a side view of the ecological soil for slope greening and slope reinforcement poured on a slope.

Wherein, 1-slope surface and 2-ecological soil.

Detailed Description

In order to make the technical scheme of the invention more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting.

Example 1:

preparing ecological soil 2:

processing a powdery clay sample with the water content of 33% into a particle size of 5-10mm, mixing various raw materials of a curing agent, and stirring for 3-5 minutes; 1200 parts of treated powdery clay sample, 200 parts of stirred curing agent, 500 parts of water, 200 parts of crushed stone-shaped biological sludge ceramsite and 200 parts of plant seeds are mixed and stirred for 3-5 minutes.

Pouring ecological soil 2:

the slump of the ecological soil 2 after stirring is 190mm, and the ecological soil 2 is released from the top end of the slope surface 1.

And repeating the preparation of the fluid state solidified soil and the pouring of the fluid state solidified soil 2 until the fluid state solidified soil 2 uniformly covers the whole slope, wherein the thickness is 5-10 cm, and completing the construction.

After the construction is finished, the 7-day strength of the ecological soil 2 reaches 0.6MPa, and the 28-day strength reaches 1.1MPa; after 17 days, the plant seeds germinate, and after 180 days, the plants cover the whole slope surface 1.

Example 2:

preparing ecological soil 2:

processing powdery clay soil sample with water content of 31% and humus soil sample with water content of 29% into particles with diameter of 1-15mm, mixing the raw materials of curing agent, and stirring for 3-5 min; mixing the treated powdery clay with 1000 parts of humus soil sample, 200 parts of stirred curing agent, 400 parts of water, 200 parts of crushed stone-shaped biological sludge ceramsite and 200 parts of plant seeds, and stirring for 3-5 minutes.

Pouring the fluidized ecological soil 2:

the slump of the ecological soil 2 after stirring is 210mm, and the ecological soil 2 is released from the top end of the slope surface 1.

And repeating the preparation of the fluid-state solidified soil and the pouring of the ecological soil 2 until the ecological soil 2 uniformly covers the whole slope, wherein the thickness is 5-10cm, and finishing the construction.

After the construction is finished, the strength of the ecological soil 2 reaches 0.3MPa in 7 days, and the strength reaches 0.8MPa in 28 days; after 14 days the plant seeds germinate and after 193 days the plants cover the whole slope 1.

Claims

1. The ecological soil for slope greening and reinforcement is characterized by comprising the following components in parts by weight: 1000-1200 parts of soil sample, 100-400 parts of curing agent, 100-800 parts of water, 100-300 parts of ceramsite and 200-300 parts of plant seed.

2. The ecological soil for slope greening and reinforcement as claimed in claim 1, wherein the soil sample comprises one or more of sandy soil, silty clay, humus soil and mucky soil with a water content of 25% -45%.

3. The ecological soil for slope greening and slope reinforcement as claimed in claim 1, wherein the curing agent comprises: 10-30 parts of plant ash, 10-30 parts of rice hull ash, 30-60 parts of mineral powder, 5-20 parts of desulfurized gypsum, 10-25 parts of coal ash and 5-15 parts of slag.

4. The ecological soil for slope greening and slope reinforcement as claimed in claim 1, wherein the ceramsite comprises one or more of biological sludge ceramsite, river bottom sludge ceramsite and fly ash ceramsite in stone-shaped ceramsite.

5. The ecological soil for slope greening and reinforcement according to claim 1, wherein the plant seeds comprise: 30-60 parts of Chinese iris seed, 30-60 parts of bermudagrass seed, 30-60 parts of carpet grass seed, 30-60 parts of green bristlegrass seed, 10-20 parts of Chinese thorowax seed and 10-20 parts of amorpha fruticosa seed.