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Construction method for slope support drainage canal

A construction method and drainage channel technology, applied in water conservancy projects, soil drainage, artificial waterways, etc., can solve the problems of high cost, failure to be widely used and promoted, and slow construction speed, so as to achieve short construction period and avoid the use of clay resources The effect of fast consumption and construction speed

Active Publication Date: 2017-05-31
CHEM IND GEOTECHN ENG
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] Reinforced concrete rectangular drainage ditches are conventionally used for drainage at the foot of the slope, and rubble stone drainage ditches or clay brick drainage ditches are used in areas with sufficient stone materials. Although the anti-seepage and anti-frost performance of the drainage ditch can be partially improved, Because of its slow construction speed and high cost, it has not been widely used and promoted.

Method used

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  • Construction method for slope support drainage canal
  • Construction method for slope support drainage canal
  • Construction method for slope support drainage canal

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0030] Such as figure 1 Shown, the construction method of slope support drain of the present invention comprises the following steps:

[0031] 1. Positioning measurement

[0032] According to the plane control points and benchmark points provided on site, 2 control points and 2 datum points were measured as the basis for measuring the construction pile center and elevation, and the center line of the U-shaped channel was measured.

[0033] 2. Foundation trench excavation

[0034] After measuring and setting out, clean and level the surface of the U-shaped channel, and use a small excavator or a special trencher to excavate the foundation trench according to the center line. The excavation depth is based on the elevation of the bottom of the U-shaped channel. The mechanical excavation depth should be 700-750mm, over-excavation is not allowed, and the bottom is supp...

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Abstract

The invention discloses a construction method for a slope support drainage canal. According to the method, a U-shaped canal is poured at the slope toe of a collapsible loess high-steep slope in the high-cold northwest district for drainage, and the non-uniformity of the expansive deformation distribution of the canal is improved, frost heaving is alleviated, the phenomena of cracks and slab staggering due to subsoil collapse are reduced through carrying out lime-soil replacement and tamping on a foundation trench, additionally arranging a gravel cushion at the bottom of the canal and laying a composite geomembrane at the bottom of a U-shaped soil model, so that deformation due to the frost heaving and leakage at a construction joint can be effectively prevented.

Description

technical field [0001] The invention relates to a drainage ditch construction at the slope foot of a slope, in particular to a drainage ditch construction method for collapsible loess high and steep slopes in the alpine region of Northwest China. Background technique [0002] The high and steep slopes of collapsible loess in the alpine northwestern region are prone to form gullies due to short-term rainwater and snowmelt erosion and erosion, and the soil bulges and deforms or even collapses, posing serious safety hazards to slope stability. How to effectively solve the anti-seepage and anti-frost heaving problems of drainage ditches in alpine regions has always been a key issue in the drainage design and construction of slope engineering. [0003] Reinforced concrete rectangular drainage ditches are conventionally used for drainage at the foot of the slope, and rubble stone drainage ditches or clay brick drainage ditches are used in areas with sufficient stone materials. Alt...

Claims

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Application Information

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IPC IPC(8): E02B5/02E02B11/00
CPCE02B5/02E02B11/005
Inventor 周峰
Owner CHEM IND GEOTECHN ENG
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