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Green environment-friendly comprehensive management method for high-steep loess landslide

A green environmental protection and comprehensive treatment technology, applied in excavation, waterway system, sewer system and other directions, can solve problems such as exacerbation, prone to landslides and slumps, avoid plastic damage, reduce erosion ability, and use materials economically. Effect

Inactive Publication Date: 2019-05-17
NORTHWEST UNIV(CN)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] For a long time, affected by natural and human factors, high and steep loess slopes are prone to landslides and landslides, resulting in the destruction of this unique natural and historical landscape, such as the Yan'an Pagoda, which is 44 meters high and is a national key It is a cultural relic protection unit, but due to the influence of natural and human factors for a long time, there have been many landslides, landslides and dangerous slopes in Baota Mountain in Yan'an. The pagoda on the mountain has tilted by 365 mm, with an annual average of 4.3 mm, and it is showing an intensifying trend ; If it is not treated, Yan'an is very likely to lose this iconic landscape architecture in a few years
[0003] The existing treatment methods for high and steep loess slopes mainly include slope protection and sidewalls, platform hardening, etc. These methods can play a certain role in protecting the mountain, but they cannot fundamentally eliminate the threat of geological disasters to high and steep loess slopes

Method used

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Embodiment 1

[0025] This embodiment is designed for the slope of Baota Mountain in Yan'an City. After field investigation and geological exploration, it is determined that the slope is 70m high and 110m long. After analyzing the slope ratio, it is finally determined that the overall slope will be divided into 11 The slope ratio of the top 4 floors is 1:0.5, each floor is 6m high and 5-6m long, the bottom 7 floors have a slope ratio of 1:0.75, each floor is 6m high, 6-8m long, and the step width is 2 -4m, in order to ensure the safety of the pagoda, a 3m high anti-sliding retaining wall is designed on the bottom floor to further enhance the stability of the slope.

[0026] Level each step, and then backfill reinforced soil on each step and at the front edge of the bottom of the high and steep loess landslide, such as figure 1 As shown, the reinforced soil is composed of multiple layers of geogrids and backfill soils laid alternately from bottom to top, that is, every layer of geogrid is lai...

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Abstract

The invention discloses a green environment-friendly comprehensive management method for high-steep loess landslide. The green environment-friendly comprehensive management method comprises the following steps: carrying out step-by-step cutting on the slope side of a high-steep loess landslide body; leveling the steps of each stage and backfilling reinforced soil on the steps of each stage; filling soil and covering after the reinforced soil is backfilled; pumping soil nails into the reinforced soil; driving a pile foundation into the bottom end of the backfilled reinforced soil at the front edge of the bottom of the high-steep loess landslide; then arranging an anti-slip retaining wall on the outer side of the backfilling reinforced soil; arranging vertical drainage pipes in a slope body;arranging horizontal drainage pipes at the top of the slope body, at the steps of each stage and at the bottom of the slope body; screening, fertilizing and shotcreting the slope side. The comprehensive prevention and control method disclosed by the invention has the advantages that the stress in the slope can be well dispersed and plastic failure is avoided; a perfect drainage system ensures thedrainage of the whole side slope and avoids the effect of rainfall infiltration on the stability of the side slope; in addition, the method disclosed by the invention is a green construction method,and has the advantages of economical raw materials, convenience in construction and suitability for wide application in high-steep landslide treatment in loess areas.

Description

technical field [0001] The invention belongs to the technical field of landslide or side slope treatment, and in particular relates to a green and environment-friendly comprehensive treatment method for high and steep loess landslides. Background technique [0002] For a long time, affected by natural and human factors, high and steep loess slopes are prone to landslides and landslides, resulting in the destruction of this unique natural and historical landscape, such as the Yan'an Pagoda, which is 44 meters high and is a national key It is a cultural relic protection unit, but due to the influence of natural and human factors for a long time, there have been many landslides, landslides and dangerous slopes in Baota Mountain in Yan'an. The pagoda on the mountain has tilted by 365 mm, with an annual average of 4.3 mm, and it is showing an intensifying trend If it is not governed, Yan'an is very likely to lose this iconic landscape architecture after a few years. [0003] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20E03F3/04E03F5/00
Inventor 谢婉丽杨惠周南山
Owner NORTHWEST UNIV(CN)
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