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Construction technology for special-arc-shaped lakeshore slope of collapsible loess region through upper-and-lower-layer staggered-distance compaction

A technology of collapsible loess and construction technology, applied in the field of collapsible loess areas, can solve the problems of difficult to guarantee the quality of the foundation soil of the lake bank slope, steep slope, etc., to reduce the loss of water resources, control infiltration and damage, Benefit-enhancing effect

Active Publication Date: 2018-12-18
CHINA CONSTR THIRD ENG BUREAU GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the steep slope and irregular arc shape of the lakeside slope, it is difficult for large machinery to directly climb the slope for foundation rolling operations, and the quality of the foundation soil of the lakeside slope is difficult to guarantee

Method used

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  • Construction technology for special-arc-shaped lakeshore slope of collapsible loess region through upper-and-lower-layer staggered-distance compaction
  • Construction technology for special-arc-shaped lakeshore slope of collapsible loess region through upper-and-lower-layer staggered-distance compaction
  • Construction technology for special-arc-shaped lakeshore slope of collapsible loess region through upper-and-lower-layer staggered-distance compaction

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Embodiment Construction

[0032] The specific embodiments of the present invention will be described in detail below to facilitate further understanding of the present invention.

[0033] The construction technology of staggered pressure on the upper and lower layers of the irregularly curved lake bank slope in the collapsible loess area includes the following steps:

[0034] (1) Selection of roller

[0035] First, calculate and determine the stratification height, list the slope and length of all arcs of the lake bank slope, as well as the mechanical properties of the roller to be selected, and compare and analyze the gradeability and slope ratio of roller 1.

[0036] p=tanα=h / l×100%, where p—required climbing ability; h—layered excavation height; l—layered excavation horizontal length; θ—mechanical climbing ability;

[0037] When θ>p, the slope is gentle, and the roller can directly climb and roll;

[0038] When θ≤p, it is difficult for the roller to directly perform long-slope climbing and rolling, and a semi-...

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Abstract

The invention discloses a construction technology for a special-arc-shaped lakeshore slope of a collapsible loess region through upper-and-lower-layer staggered-distance compaction. A construction method comprises the steps that by analyzing the slope operating capacity of a large rolling compaction machine, side slope excavation and compaction are conducted through an upper-and-lower-layer staggered-distance compaction method of layering excavation and layering compaction, and a slope base layer is constituted by a lime and soil cushion layer to conduct seepage prevention, wherein the ratio of lime to soil is 3:7. Compared with a traditional overall backfill compaction slope cutting method, a plate compactor compaction method and the like, the construction method is innovated and improvedin the aspects of construction period, quality, benefit and the like, the side slope compaction and seepage-preventing quality is ensured, the loss of water resources is reduced, collapsibility of side slope soil is eliminated, and seepage and damage to collapsible loess environments around a water system are effectively controlled.

Description

Technical field [0001] The invention relates to the field of construction technology, in particular to the construction technology of staggered pressure for upper and lower floors of a different arc-shaped lake bank slope in a collapsible loess area. The technology is suitable for collapsible loess areas. Background technique [0002] The soil in the collapsible loess area is collapsible, which makes the foundation soil treatment and anti-seepage construction of the artificial lake in the collapsible loess area very important. At the same time, due to the steep slope of the lake bank slope and its irregular arc shape, it is difficult for large machines to directly climb the slope for foundation rolling operations, and the quality of the foundation soil for the lake bank slope is difficult to guarantee. [0003] Therefore, this application combines the actual construction conditions to innovate the construction technology for the slope compaction of the irregularly curved artificial...

Claims

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Application Information

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IPC IPC(8): E02D3/046
CPCE02D3/046
Inventor 李鹏骆发江李毅江少兵吴振军刘江杨清理白一波张波姜力宁董少飞李艳张勤雄许胜
Owner CHINA CONSTR THIRD ENG BUREAU GRP CO LTD
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