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Biological enzyme soil solidification-based side slope ecological protection method

An ecological protection and soil solidification technology, applied in the field of slope ecological protection, can solve the problems of difficult vegetation growth, soil not being too dense, and no one-to-one correspondence between strength and rain erosion resistance, so as to prevent rain erosion and prevent The effect of excess rainwater infiltration

Inactive Publication Date: 2013-02-06
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the vegetation growth requirement of the slope soil is that the soil should not be too dense and must have the effect of resisting rain erosion, but there is no one-to-one correspondence between the strength and the resistance to rain erosion. Balance the relationship between these, so it has not been applied to slope ecological protection projects
Moreover, due to the high pH value of traditional cement and other inorganic binders, it is difficult to grow vegetation, and there are many disadvantages in application.

Method used

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  • Biological enzyme soil solidification-based side slope ecological protection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: 1:2 gentle slope, the slope soil is silty soil: add 2% cement, 3% nutrient soil, and 38ml of biological enzyme stock solution to each cubic meter of soil to measure the biological enzyme; press the biological enzyme stock solution After diluting the biological enzyme with water at a ratio of 1000 times the amount, sprinkle it evenly on the surface of the loose slope soil; use the road mixing method to mix the added biological enzyme and the soil evenly; spread the stirred slope soil layer evenly, and spread the soil The thickness of the layer is about 15cm; sow grass seeds on the soil surface; hammer or roll until the soil is agglomerated; after 3 days of maintenance under natural conditions, the vegetation on the slope begins to germinate and grow. Under the uncured condition of the soil layer, the amount of sediment erosion per square meter of slope under 4.5mm / min heavy rainfall for 9 minutes is 208 grams, and the amount of sediment erosion for 150 minutes ...

Embodiment 2

[0021] Embodiment two: 1:1.25 steeper slope, slope soil is clay: add 2% cement, 3% nutritious soil per cubic meter of soil, and the mixing ratio of about 43ml of biological enzyme stock solution is used to measure biological enzyme; After diluting the biological enzyme with water at a ratio of 1000 times the amount of enzyme, sprinkle it evenly on the surface of the loose slope soil; use the road mixing method to mix the added biological enzyme and soil evenly; spread the stirred slope soil layer evenly, and spread The thickness of the soil layer is about 8cm; sow grass seeds on the soil surface; use hammering or rolling until the soil is agglomerated; after 3 days of maintenance under natural conditions, the vegetation on the slope begins to germinate and grow. Under the uncured condition of the soil layer, the amount of sediment erosion per square meter of slope under the heavy rainfall of 4.5mm / min for 9 minutes is 56 grams, and the amount of sediment erosion for 150 minutes...

Embodiment 3

[0022] Example 3: 1:1 steeper slope, the slope soil is clay: add 2% cement, 3% nutrient soil per cubic meter of soil, and measure the biological enzyme according to the mixing ratio of about 43ml biological enzyme stock solution; After diluting the biological enzyme with water at a ratio of 1000 times the amount of enzyme, sprinkle it evenly on the surface of the loose slope soil; use the road mixing method to mix the added biological enzyme and soil evenly; spread the stirred slope soil layer evenly, and spread The thickness of the soil layer is about 5cm; the turf can grow naturally after the turf is spread on the soil surface after hammering or rolling until the soil is agglomerated. Under the unsolidified condition of the soil layer, the amount of sediment washed away per square meter of slope under the heavy rainfall of 4.5mm / min for 9 minutes is 78 grams, and the amount of sand washed by the heavy rainfall for 150 minutes is 270 grams, while the amount of sand washed away...

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Abstract

The invention discloses a biological enzyme soil solidification-based side slope ecological protection method which comprises the steps of adding cement and nutrient soil in the soil for stirring, adding a biological enzyme stock solution into the soil to mix evenly after diluting by water and finally paving on a side slope with a paving thickness of 3-20cm; and sowing grass seeds or implanting turfs in the paved soil layer to ensure that the grass seeds or the grass turfs grow under natural conditions, wherein 2wt% cement, 36-60ml biological enzyme stock solution and 3wt% nutrient soil are added in every square meter of soil, the biological enzyme stock solution is diluted according to a volume ratio of 1: (500-1500) to the water, and the biological enzyme is Terrazyme or Permazyme slurry. After the treatment through the method, the erosion prevention performance of the soil on the surface of the side slope is enhanced, the erosion prevention performance and the heavy rainfall filtration prevention performance are provided, the side slope is suitable for the growth of plant covers and the secular stability of the side slope can be kept.

Description

technical field [0001] The invention relates to a slope ecological protection method based on biological enzyme soil solidification. technical background [0002] The traditional slope greening protection method, because there is no solidified soil layer on the slope surface, is easily affected by heavy rainfall and rainwater erosion and rainwater infiltration, resulting in a large number of landslides and collapses. Therefore, in order to meet the stability of slopes under heavy rainfall climate conditions, it is necessary to study a slope ecological protection technology method that has a certain slope soil strength, can resist heavy rainfall erosion, and can be suitable for vegetation growth. [0003] Bio-enzyme soil solidification technology has been applied in the stabilization of pavement and subgrade soil materials, the stability of over-wet soil materials, the soft soil solidification of abutment foundation pits and industrial and civil construction foundations, etc....

Claims

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Application Information

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IPC IPC(8): E02D17/20E02D3/12A01G1/00
Inventor 王桂尧戴艳辉汪聪陈镜丞
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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