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Repairing method of acid black rock layer slope

A repair method, technology for slopes, applied in the direction of land preparation methods, applications, agricultural machinery and implements

Inactive Publication Date: 2021-08-10
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is that there is no simple and effective repair method for the acidic black rock formation slope

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] To carry out acidic improvement and vegetation restoration on a black rock formation slope in a fully weathered state, the steps are as follows:

[0035] S1. According to the on-site slope topography and design and construction drawings, carry out slope leveling operations on the slope to ensure that the entire slope to be constructed has no obvious protrusions and depressions;

[0036] S2. The slope surface is divided into grids, and soil samples with a depth of 15cm to 20cm are taken in each divided square grid and mixed together evenly. The sampling in the grid adopts five-point sampling, that is, Sampling at the inner and center of the four corners of each grid ensures that the pH value of the soil sample taken has a certain representativeness. After measuring the pH value, the acidity of the soil in each grid area is obtained;

[0037] S3, according to the pH value gained in the step S2, determine the consumption of the acid neutralizer (limestone powder) of each z...

Embodiment 2

[0045] To carry out acidic improvement and vegetation restoration on a black rock slope in a semi-weathered state, the steps are as follows:

[0046]S1. According to the on-site slope topography and design and construction drawings, perform slope leveling operations on the slope to ensure that the entire slope to be constructed has no obvious protrusions and depressions;

[0047] S2. The slope surface is divided into grids, and soil samples with a depth of 15cm to 20cm are taken in each divided square grid and mixed together evenly. The sampling in the grid adopts five-point sampling, that is, Sampling in the four corners and the center of each grid ensures that the PH value of the soil sample taken has a certain representativeness. After measuring the PH value, the acidity of the soil in each grid area is obtained;

[0048] S3, according to the pH value gained in the step S2, determine the consumption of the acid neutralizer (limestone powder) of each zone, then start to spra...

Embodiment 3

[0056] To carry out acidic improvement and vegetation restoration on a black rock slope in an unweathered state, the steps are as follows:

[0057] S1. According to the on-site slope topography and design and construction drawings, perform slope leveling operations on the slope to ensure that the entire slope to be constructed has no obvious protrusions and depressions;

[0058] S2. The slope surface is divided into grids, and soil samples with a depth of 15cm to 20cm are taken in each divided square grid and mixed together evenly. The sampling in the grid adopts five-point sampling, that is, Sampling is taken at the inner and center of the four corners of each grid to ensure that the pH value of the soil samples taken is representative. After measuring the pH value, the acidity strength of the soil in each square area is obtained;

[0059] S3, according to the pH value gained in the step S2, determine the consumption of the acid neutralizer (limestone powder) of each zone, t...

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Abstract

The invention discloses a repairing method of an acid black rock layer slope, and belongs to the technical field of weathering prevention and repairing measures of black rock layer slopes. The repairing method comprises the steps of slope leveling, soil acidity general survey, limestone layer spraying, first planting soil layer laying, acidophilic dry bacterium powder adding, second planting soil layer laying, tolerant plant planting and maintenance management. According to the repairing method, most of free-state ferrous iron and reduced-state sulfides can be eliminated, acid seepage in a slope soil body is recovered to be neutral, meanwhile, the contact between a slope black shale body and air is isolated, the chemical weathering effect is greatly relieved, therefore, the situation of slope instability caused by dissolving turbidity, alteration and cleavage fracture development which occur subsequently is avoided, a great effect is also achieved on recovery of vegetation on the slope, and the repairing method does not need large-scale earth work, is low in cost and does not cause secondary pollution to the surrounding environment.

Description

technical field [0001] The invention relates to the technical field of anti-weathering and restoration measures for black rock formation slopes, in particular to a method for repairing acidic black rock formation slopes. Background technique [0002] Black rock formations rich in reductive sulfides such as pyrite are widely distributed in my country. Black rock formations exposed to the atmosphere due to tectonic movements or human engineering activities can easily generate acidic water and some Swelling sulfates. The rapid change of rock formation composition, structure and structure caused by acidic water not only occurs on its own rock formation, causing rock damage and acidification of surrounding soil, but also promotes related building materials in its adjacent rock formations and engineering buildings in contact with it. Corrosion, resulting in ecological environment, slope protection failure problems are very prominent. The exposed black rock slopes are generally di...

Claims

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Application Information

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IPC IPC(8): A01B79/02
CPCA01B79/02
Inventor 李晓宁彭勃王唤龙张龙飞董洋君李青龙
Owner SOUTHWEAT UNIV OF SCI & TECH
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