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Loose rocky slope spray-seeding repairing method

A stone slope and repair method technology, applied in the direction of site preparation methods, planting substrates, botanical equipment and methods, etc., can solve problems that are prone to landslides, mudslides, large water sources, and insufficient fixation strength on slopes, etc.

Active Publication Date: 2021-04-09
DALIAN DEETOP ENVIRONMENTAL TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the slope surface is a giant artificial loose accumulation formed by loose waste rocks, when the root system of the repaired plants is not developed enough, the fixation strength to the slope is not enough. Poor performance, under the continuous infiltration of rainwater, it is very easy to cause geological disasters such as landslides and debris flows; in addition, because the slope surface under the covering soil or the spraying matrix is ​​made of waste rocks, the water retention performance is extremely poor, and a large amount of water is required for later maintenance

Method used

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  • Loose rocky slope spray-seeding repairing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment provides a method for repairing a loose stone slope by spraying, comprising the following steps:

[0033] (1) Level the slope surface after slope cutting and grading, and remove large waste rocks;

[0034] (2) Spray the cement slurry evenly on the slope, and then let it stand for 1 hour. The water-cement ratio of the cement slurry is 1:1. The cement is ordinary Portland cement with a strength grade of 42.5. The amount of cement slurry sprayed per square meter is 2L;

[0035] (3) Mechanically compact the slope after step (2) standing still, and then spray the sealing layer. The sealing layer is composed of the following raw materials in mass percentages: 3% vinyl acetate-ethylene copolymer emulsion, 90% clay, slag silicon Salt cement 7%, vinyl acetate-ethylene copolymer emulsion solid content 55%, slag portland cement strength grade is 32.5;

[0036] (4) Lay the protective net after the hardening of the slope seal layer in step (3), and fix it on the slo...

Embodiment 2

[0044] This embodiment provides a method for repairing a loose stone slope by spraying, comprising the following steps:

[0045] (1) Level the slope surface after slope cutting and grading, and remove large waste rocks;

[0046] (2) Spray the cement slurry evenly on the slope, and then let it stand for 1.5 hours. The water-cement ratio of the cement slurry is 1:1. The cement is ordinary Portland cement with a strength grade of 42.5. The amount of cement slurry sprayed per square meter is 2.5L;

[0047] (3) Carry out mechanical compaction to the slope surface after step (2) standing still, and then spray the sealing layer. The sealing layer is composed of the following raw materials in mass percentage: vinyl acetate-ethylene copolymer emulsion 4%, clay 88%, slag silicon Salt cement 8%, vinyl acetate-ethylene copolymer emulsion solid content 55%, slag portland cement strength grade is 32.5;

[0048] (4) Lay the protective net after the hardening of the slope seal layer in step ...

Embodiment 3

[0056] This embodiment provides a method for repairing a loose stone slope by spraying, comprising the following steps:

[0057] (1) Level the slope surface after slope cutting and grading, and remove large waste rocks;

[0058] (2) Spray the cement slurry evenly on the slope, and then let it stand for 2 hours. The water-cement ratio of the cement slurry is 1:1. The cement is ordinary Portland cement with a strength grade of 42.5. The amount of cement slurry sprayed per square meter is 3L;

[0059] (3) Mechanically compact the slope after step (2) standing still, and then spray the sealing layer. The sealing layer is composed of the following raw materials in mass percentages: 5% vinyl acetate-ethylene copolymer emulsion, 85% clay, slag silicon Salt cement 10%, vinyl acetate-ethylene copolymer emulsion solid content 55%, slag portland cement strength grade is 32.5;

[0060] (4) Lay the protective net after the hardening of the slope seal layer in step (3), and fix it on the s...

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Abstract

The invention provides a loose rocky slope spray-seeding repairing method. The loose rocky slope spray-seeding repairing method comprises the following steps of leveling a slope surface, and removing large waste rocks; spraying cement paste; conducting mechanic compacting and spraying a bottom sealing layer; laying a protective net, and fixing the protective net on the slope surface through anchor rods; transversely arranging plant growing bags in a staggered manner; spraying a bottom substrate; laying a coconut shred blanket on the bottom substrate; spraying a middle-layer substrate; and spraying a seed layer substrate. By means of the method, rapid ecological restoration of a loose waste rock slope can be achieved, the phenomena of substrate sliding and landslide are avoided, the restored slope is high in rain wash resistance, weak in slope surface water seepage capacity and high in stability and safety, and the lasting safety and regreening effect of the slope surface can be achieved.

Description

technical field [0001] The invention relates to the technical field of slope repair, in particular to a method for repairing a loose stone slope by spraying. Background technique [0002] Landslide geological disasters occur every year in our country, especially in summer. When a landslide occurs, a certain amount of rock and soil moves from a high place to a low place, causing losses or casualties to buildings or people along the way. In order to effectively avoid the occurrence of landslide disasters, it is necessary to carry out reinforcement design for unstable slopes during slope design, so as to ensure that the slope remains stable during the operation phase. [0003] For some high and steep rocky slopes or slopes of rock drainage fields, due to the steepness and instability of the slope surface and the poor safety factor, it is often necessary to cut the slope and open the slope. The slope of the rocky slope should be lower than 35 degrees, and then cover with soil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/00A01G17/00A01G31/00A01G24/10A01G24/28A01G24/22A01G24/23A01G24/30A01G24/25A01C1/06A01G31/02A01G24/12A01C7/00A01B79/02E02D17/20E02D5/74
CPCA01G22/00A01G17/005A01G31/00A01G24/10A01G24/28A01G24/22A01G24/23A01G24/30A01G24/25A01C1/06A01G31/02A01G24/12A01C7/00A01B79/02E02D17/20E02D17/202E02D5/74Y02P60/21
Inventor 赵小江孙树珩高飞李伟王鑫鹏张旭升颜秉英
Owner DALIAN DEETOP ENVIRONMENTAL TECH CO LTD
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